v3dv: class names, use more CamelCase

104 files changed, 1301 insertions, 1301 deletions

diff --git a/lib/sisu/v3dv/cgi_pgsql.rb b/lib/sisu/v3dv/cgi_pgsql.rb
index 41c95536..48d49774 100644
--- a/lib/sisu/v3dv/cgi_pgsql.rb
+++ b/lib/sisu/v3dv/cgi_pgsql.rb
@@ -63,11 +63,11 @@ module  SiSU_CGI_PgSQL
   class SearchPgSQL < CGI_Common
     def initialize(opt,webserv)
       @opt,@webserv=opt,webserv
-      @env=SiSU_Env::Info_env.new('',opt)
-      @sys=SiSU_Env::System_call.new
+      @env=SiSU_Env::InfoEnv.new('',opt)
+      @sys=SiSU_Env::SystemCall.new
       @image_src="#{@env.url.webserv_cgi}/_sisu/image_sys"
       @common=SiSU_CGI_SQL::CGI_Common.new(@webserv,@opt,@image_src,@env)
-      @db=SiSU_Env::Info_db.new
+      @db=SiSU_Env::InfoDb.new
       @cgi_file_name="#{Db[:name_prefix_db]}by_#{opt.dir_structure_by}_pgsql.cgi"
     end
     def pgsql
@@ -140,7 +140,7 @@ module  SiSU_CGI_PgSQL
     end
     def search_statement
       <<-'WOK_SQL'
-      class Dbi_search_string
+      class DBI_SearchString
         def initialize(l,t,q,cse=false)
           @l,@t,@q,@c=l,t,q,cse
         end
diff --git a/lib/sisu/v3dv/cgi_sql_common.rb b/lib/sisu/v3dv/cgi_sql_common.rb
index 15adf2f5..59844d2b 100644
--- a/lib/sisu/v3dv/cgi_sql_common.rb
+++ b/lib/sisu/v3dv/cgi_sql_common.rb
@@ -230,7 +230,7 @@ module SiSU_CGI_SQL
     end
     def search_request
       <<-'WOK_SQL'
-      class Search_request                                                       #% search_for
+      class SearchRequest                                                       #% search_for
         attr_accessor :text1,:fulltext,:keywords,:title,:author,:topic_register,:subject,:description,:publisher,:editor,:contributor,:date,:type,:format,:identifier,:source,:language,:relation,:coverage,:rights,:comment,:abstract,:owner,:date_created,:date_issued,:date_modified,:date_available,:date_valid,:filename
         def initialize(search_field='',q='')
           @search_field,@q=search_field,q
@@ -326,7 +326,7 @@ module SiSU_CGI_SQL
     end
     def search_statement_common
       <<-'WOK_SQL'
-      class Dbi_search_statement
+      class DBI_SearchStatement
         attr_reader :text_search_flag,:sql_select_body_format,:sql_select_endnotes_format,:sql_offset,:sql_limit
         def initialize(conn,search_for,q,c)
           @conn=conn
@@ -336,114 +336,114 @@ module SiSU_CGI_SQL
           #@offset+=@@limit
           search={ :text => [], :endnotes => [] }
           cse=(c =~/\S/) ? true : false
-          st=Dbi_search_string.new('doc_objects.clean',search_for.text1,q['s1'],cse).string
-          se=Dbi_search_string.new('endnotes.clean',search_for.text1,q['s1'],cse).string
+          st=DBI_SearchString.new('doc_objects.clean',search_for.text1,q['s1'],cse).string
+          se=DBI_SearchString.new('endnotes.clean',search_for.text1,q['s1'],cse).string
           @text_search_flag=st[:flag]
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << se[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.fulltext',search_for.fulltext,q['ft'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.fulltext',search_for.fulltext,q['ft'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.classify_keywords',search_for.keywords,q['key'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.classify_keywords',search_for.keywords,q['key'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.title',search_for.title,q['ti'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.title',search_for.title,q['ti'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.creator_author',search_for.author,q['au'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.creator_author',search_for.author,q['au'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.classify_topic_register',search_for.topic_register,q['tr'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.classify_topic_register',search_for.topic_register,q['tr'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.classify_subject',search_for.subject,q['sj'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.classify_subject',search_for.subject,q['sj'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.notes_description',search_for.description,q['dsc'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.notes_description',search_for.description,q['dsc'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.publisher',search_for.publisher,q['pb'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.publisher',search_for.publisher,q['pb'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.creator_editor',search_for.editor,q['cntr'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.creator_editor',search_for.editor,q['cntr'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.creator_contributor',search_for.contributor,q['cntr'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.creator_contributor',search_for.contributor,q['cntr'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.date_published',search_for.date,q['dt'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.date_published',search_for.date,q['dt'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.classify_type',search_for.type,q['ty'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.classify_type',search_for.type,q['ty'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.classify_identifier',search_for.identifier,q['id'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.classify_identifier',search_for.identifier,q['id'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.original_source',search_for.source,q['src'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.original_source',search_for.source,q['src'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.language_document_char',search_for.language,q['lang'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.language_document_char',search_for.language,q['lang'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.classify_relation',search_for.relation,q['rel'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.classify_relation',search_for.relation,q['rel'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.classify_coverage',search_for.coverage,q['cov'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.classify_coverage',search_for.coverage,q['cov'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.rights_all',search_for.rights,q['cr'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.rights_all',search_for.rights,q['cr'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.notes_comment',search_for.comment,q['co'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.notes_comment',search_for.comment,q['co'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.notes_abstract',search_for.abstract,q['ab'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.notes_abstract',search_for.abstract,q['ab'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
           end
-          st=Dbi_search_string.new('metadata_and_text.src_filename',search_for.filename,q['fns'],cse).string
+          st=DBI_SearchString.new('metadata_and_text.src_filename',search_for.filename,q['fns'],cse).string
           if st[:flag]
             search[:text]                    << st[:search]
             search[:endnotes]                << st[:search]
@@ -539,7 +539,7 @@ module SiSU_CGI_SQL
       WOK_SQL
     end
     def tail
-      v=SiSU_Env::Info_version.instance.get_version
+      v=SiSU_Env::InfoVersion.instance.get_version
       <<-WOK_SQL
       def tail
         <<-'WOK'
@@ -703,7 +703,7 @@ module SiSU_CGI_SQL
     def main2
       <<-'WOK_SQL'
           search_field=cgi['find'] if cgi['find'] # =~/\S+/
-          @search_for=Search_request.new(search_field,q) #.analyze               #% search_for
+          @search_for=SearchRequest.new(search_field,q) #.analyze               #% search_for
                                                                                  #% searches
           #Canned_search.new(@base,@search_for.text1,cgi)
           if @search_for.text1=~/\S+/ or @search_for.fulltext=~/\S+/ or @search_for.author=~/\S+/ or @search_for.topic_register=~/\S+/  #and search_field =~/\S/
@@ -819,7 +819,7 @@ module SiSU_CGI_SQL
             @search[:endnotes]<<%{endnotes.clean~*'#{CGI.unescape(s1)}'}
           end
           #% dbi_request
-          dbi_statement=Dbi_search_statement.new(@conn,@search_for,q,checked_case)
+          dbi_statement=DBI_SearchStatement.new(@conn,@search_for,q,checked_case)
           @text_search_flag=false
           @text_search_flag=dbi_statement.text_search_flag
           s_contents=dbi_statement.contents
diff --git a/lib/sisu/v3dv/cgi_sqlite.rb b/lib/sisu/v3dv/cgi_sqlite.rb
index 0286736b..166bda77 100644
--- a/lib/sisu/v3dv/cgi_sqlite.rb
+++ b/lib/sisu/v3dv/cgi_sqlite.rb
@@ -63,7 +63,7 @@ module  SiSU_CGI_SQLite
   class SearchSQLite < CGI_Common
     def initialize(opt,webserv)
       @opt,@webserv=opt,webserv
-      @env=SiSU_Env::Info_env.new('',opt)
+      @env=SiSU_Env::InfoEnv.new('',opt)
       @image_src="#{@env.url.webserv_cgi}/_sisu/image_sys"
       @common=SiSU_CGI_SQL::CGI_Common.new(@webserv,@opt,@image_src,@env)
       @cgi_file_name="#{Db[:name_prefix_db]}by_#{opt.dir_structure_by}_sqlite.cgi"
@@ -137,7 +137,7 @@ module  SiSU_CGI_SQLite
     end
     def search_statement
       <<-'WOK_SQL'
-      class Dbi_search_string
+      class DBI_SearchString
         def initialize(l,t,q,cse=false)
           @l,@t,@q=l,t,q
         end
diff --git a/lib/sisu/v3dv/character_encoding.rb b/lib/sisu/v3dv/character_encoding.rb
index f576b461..1931c466 100644
--- a/lib/sisu/v3dv/character_encoding.rb
+++ b/lib/sisu/v3dv/character_encoding.rb
@@ -73,7 +73,7 @@ module SiSU_CharacterEncode
       @ce_tbl=@db.create_table.documents(:character_encoding, :glyph,:String, :dec,:Integer, :hex,:String, :rb,:String, :html,:String, :html_name,:String, :tex,:String, :tex_licr,:String, :tex_alt,:String, :name,:String)
     end
     def db
-      x=Character_encoding.new.table
+      x=CharacterEncoding.new.table
       #x.each {|y| puts y[2].inspect}
       x.each do |c|
         #puts "#{c[0]}, #{c[1]}, #{c[2]}, #{c[3]}, #{c[4]}, #{c[5]}, #{c[6]}, #{c[7]}, #{c[8]}, #{c[9]}"
@@ -138,7 +138,7 @@ module SiSU_CharacterEncode
       end
     end
   end
-  class Character_encoding
+  class CharacterEncoding
     def table
       x=[]
 #:glyph, :dec,:hex,  :rb,            :xml ,   :html_name,  :tex,    :tex_licr,         :tex_alt,          :name
diff --git a/lib/sisu/v3dv/composite.rb b/lib/sisu/v3dv/composite.rb
index 95be6d1e..abfba7a2 100644
--- a/lib/sisu/v3dv/composite.rb
+++ b/lib/sisu/v3dv/composite.rb
@@ -59,9 +59,9 @@
 =end
 module SiSU_Assemble
   require_relative 'sysenv'                             # sysenv.rb
-  class Remote_image
+  class RemoteImage
     def initialize
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def image(dir)
       images=[]
@@ -82,7 +82,7 @@ module SiSU_Assemble
       end
       output_path="#{@env.path.webserv}/#{@env.path.stub_pwd}/_sisu/image_external"
       FileUtils::mkdir_p(output_path) unless FileTest.directory?(output_path)
-      SiSU_Env::System_call.new("#{path}/*",output_path,'q').rsync
+      SiSU_Env::SystemCall.new("#{path}/*",output_path,'q').rsync
     end
     def download_doc_skin(doc_skin) #first element in array is source url
       path="#{@env.processing_path.processing}/external_document/skin/doc"
@@ -104,14 +104,14 @@ module SiSU_Assemble
     @@imager={}
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def read
       begin
         @fns_array=IO.readlines(@opt.fns,'')
         assembled=insertions?
         write(assembled)
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -232,18 +232,18 @@ module SiSU_Assemble
       tuned_file
     end
   end
-  class Composite_file_list
+  class CompositeFileList
     @@imager={}
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def read
       begin
         @opt.fns=@opt.fns.gsub(/\.ssm\.sst$/,'.ssm') #FIX earlier, hub
         @fns_array=IO.readlines(@opt.fns,'')
         files=insertions?
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
diff --git a/lib/sisu/v3dv/concordance.rb b/lib/sisu/v3dv/concordance.rb
index a1720de9..2e14ab14 100644
--- a/lib/sisu/v3dv/concordance.rb
+++ b/lib/sisu/v3dv/concordance.rb
@@ -70,7 +70,7 @@ module SiSU_Concordance
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       begin
@@ -95,23 +95,23 @@ module SiSU_Concordance
           SiSU_Screen::Ansi.new(@md.opt.cmd,"wc (word count) is off, concordance will be processed for all files including those over the max set size of: #{wordmax} words").warn unless @md.opt.cmd =~/q/
           SiSU_Concordance::Source::Words.new(@particulars).songsheet
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
       end
     end
     private
-    class Doc_title
+    class DocTitle
       include SiSU_Viz
       #revisit, both requires (html & shared_xml) needed for stand alone operation (sisu -w [filename])
       require_relative 'shared_xml'                     # shared_xml.rb
       require_relative 'html'                           # html.rb
       def initialize(particulars)
         @particulars,@md=particulars,particulars.md
-        @data=SiSU_HTML::Source::Html_environment.new(particulars).tuned_file_instructions
+        @data=SiSU_HTML::Source::HTML_Environment.new(particulars).tuned_file_instructions
         @file=SiSU_Env::FileOp.new(@md)
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         txt_path=%{#{@md.dir_out}}
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
         @fnb=@md.fnb
         @lex_button=%{<a href="http://www.jus.uio.no/sisu/" target="_top"><img border="0" height="44" width="144" valign="center" src="#{@file.path_rel_links.html_seg_2}_sisu/image/sisu.png" alt="SiSU home --&gt;"></a>}
         @doc_details =<<WOK
@@ -119,9 +119,9 @@ module SiSU_Concordance
 WOK
       end
       def create
-        head_banner=SiSU_HTML_Format::Head_toc.new(@md)
-        minitoc=SiSU_HTML_MiniToc::Toc_mini.new(@md,@data).songsheet.join("\n")
-        @css=SiSU_Env::CSS_stylesheet.new(@md)
+        head_banner=SiSU_HTML_Format::HeadToc.new(@md)
+        minitoc=SiSU_HTML_MiniToc::TocMini.new(@md,@data).songsheet.join("\n")
+        @css=SiSU_Env::CSS_Stylesheet.new(@md)
         toc='<div class="toc">' + minitoc + '</div>'
         <<WOK
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
@@ -185,11 +185,11 @@ WOK
       def initialize(particulars)
         @particulars=particulars
         begin
-          @vz=SiSU_Env::Get_init.instance.skin
+          @vz=SiSU_Env::GetInit.instance.skin
           @env,@md,@dal_array=particulars.env,particulars.md,particulars.dal_array
           @file=SiSU_Env::FileOp.new(@md)
           @freq=Hash.new(0)
-          @dp=@@dp ||=SiSU_Env::Info_env.new.digest.pattern
+          @dp=@@dp ||=SiSU_Env::InfoEnv.new.digest.pattern
           @rxp_lv1=/^#{Mx[:lv_o]}1:/ #fix @rxp_lv #  Mx[:lv_o]
           @rxp_lv2=/^#{Mx[:lv_o]}2:/ #fix @rxp_lv #  Mx[:lv_o]
           @rxp_lv3=/^#{Mx[:lv_o]}3:/ #fix @rxp_lv #  Mx[:lv_o]
@@ -203,7 +203,7 @@ WOK
           @alph=SiSU_i18n::Alphabet.new(@md.opt.lng).hash_arrays
           @alphlst=SiSU_i18n::Alphabet.new(@md.opt.lng).hash_strings
           @rgx_scanlist=%r{#{Mx[:fa_italics_o]}[#{@alphlst[:l]}#{@alphlst[:u]}0-9"\s]{2,12}#{Mx[:fa_italics_c]}|#{Mx[:fa_bold_o]}[#{@alphlst[:l]}#{@alphlst[:u]}0-9"\s]{2,12}#{Mx[:fa_bold_c]}|(?:https?|file)://\S+|<\S+?>|[#{@alphlst[:l]}#{@alphlst[:u]}]+|\w+}mi
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         end
       end
       def songsheet
@@ -211,7 +211,7 @@ WOK
           FileUtils::mkdir_p(@file.output_path.html_concordance.dir) unless FileTest.directory?(@file.output_path.html_concordance.dir)
           @file_concordance=File.open(@file.place_file.html_concordance.dir,'w')
           map_para
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
           @file_concordance.close
         end
@@ -315,7 +315,7 @@ WOK
         end
         scr='<font size="1" color="#777777" face=times new roman><img border="0" height="15" width="15" src="../_sisu/image/b_doc.png" alt="Full Text">&nbsp;scroll:&nbsp;</font><font size="1" color="#222222" face=times new roman>doc#&nbsp;</font> '
         seg=''
-        head=SiSU_Concordance::Source::Doc_title.new(@particulars).create
+        head=SiSU_Concordance::Source::DocTitle.new(@particulars).create
         head.gsub!(/#{Xx[:html_relative2]}/m,@file.path_rel_links.html_seg_2)
         head.gsub!(/#{Xx[:html_relative1]}/m,@file.path_rel_links.html_seg_1)
         @file_concordance << head
diff --git a/lib/sisu/v3dv/conf.rb b/lib/sisu/v3dv/conf.rb
index 194e5cbd..5eb1b116 100644
--- a/lib/sisu/v3dv/conf.rb
+++ b/lib/sisu/v3dv/conf.rb
@@ -81,7 +81,7 @@ module SiSU_Initialize
     require_relative 'sysenv'                           # sysenv.rb
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new(@opt.fns)
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
       @suffix,@path={},{}
       @suffix[:rnc]='rnc'
       @suffix[:rng]='rng'
@@ -94,26 +94,26 @@ module SiSU_Initialize
     end
     def make_homepage
       SiSU_Screen::Ansi.new(@opt.cmd,'invert','Make homepage','').colorize unless @opt.cmd =~/q/
-      SiSU_Env::Create_site.new(@opt.cmd).homepage
+      SiSU_Env::CreateSite.new(@opt.cmd).homepage
     end
     def cp_local_images
       SiSU_Screen::Ansi.new(@opt.cmd,'invert','Copy images','').colorize unless @opt.cmd =~/q/
-      SiSU_Env::Create_site.new(@opt.cmd).cp_local_images
-      SiSU_Env::Create_site.new(@opt.cmd).cp_webserver_images_local #this should not have been necessary
-      SiSU_Env::Create_site.new(@opt.cmd).cp_base_images #base images (nav etc.) used by all html
+      SiSU_Env::CreateSite.new(@opt.cmd).cp_local_images
+      SiSU_Env::CreateSite.new(@opt.cmd).cp_webserver_images_local #this should not have been necessary
+      SiSU_Env::CreateSite.new(@opt.cmd).cp_base_images #base images (nav etc.) used by all html
     end
     def cp_external_images
       SiSU_Screen::Ansi.new(@opt.cmd,'invert','Copy external images','').colorize if @opt.cmd =~/V/
-      SiSU_Env::Create_site.new(@opt.cmd).cp_external_images
+      SiSU_Env::CreateSite.new(@opt.cmd).cp_external_images
     end
     def cp_webserver_images
       SiSU_Screen::Ansi.new(@opt.cmd,'invert','Copy webserver/output file images','').colorize unless @opt.cmd =~/q/
-      SiSU_Env::Create_site.new(@opt.cmd).cp_webserver_images
-      SiSU_Env::Create_system_link.new.images
+      SiSU_Env::CreateSite.new(@opt.cmd).cp_webserver_images
+      SiSU_Env::CreateSystemLink.new.images
     end
     def css
       SiSU_Screen::Ansi.new(@opt.cmd,'invert','Configuring CSSs','').colorize unless @opt.cmd =~/q/
-      SiSU_Env::Create_site.new(@opt.cmd).cp_css
+      SiSU_Env::CreateSite.new(@opt.cmd).cp_css
     end
     def dtd
       SiSU_Screen::Ansi.new(@opt.cmd,'invert','Configuring DTDs','').colorize unless @opt.cmd =~/q/
@@ -167,10 +167,10 @@ module SiSU_Initialize
       rnc << @rxng.rnc_model_output_sax
       rnc.close
       #xsd
-      schema=SiSU_Env::System_call.new(rnc_src,xsd_file)
+      schema=SiSU_Env::SystemCall.new(rnc_src,xsd_file)
       schema.relaxng(@opt.cmd)
       #rng
-      schema=SiSU_Env::System_call.new(rnc_src,rng_file)
+      schema=SiSU_Env::SystemCall.new(rnc_src,rng_file)
       schema.relaxng(@opt.cmd)
       #rnc
       FileUtils::cp(rnc_src,rnc_file)
@@ -186,10 +186,10 @@ module SiSU_Initialize
       rnc << @rxng.rnc_model_output_dom
       rnc.close
       #xsd
-      schema=SiSU_Env::System_call.new(rnc_src,xsd_file)
+      schema=SiSU_Env::SystemCall.new(rnc_src,xsd_file)
       schema.relaxng(@opt.cmd)
       #rng
-      schema=SiSU_Env::System_call.new(rnc_src,rng_file)
+      schema=SiSU_Env::SystemCall.new(rnc_src,rng_file)
       schema.relaxng(@opt.cmd)
       #rnc
       FileUtils::cp(rnc_src,rnc_file)
@@ -205,10 +205,10 @@ module SiSU_Initialize
       rnc << @rxng.rnc_model_output_xhtml
       rnc.close
       #xsd
-      schema=SiSU_Env::System_call.new(rnc_src,xsd_file)
+      schema=SiSU_Env::SystemCall.new(rnc_src,xsd_file)
       schema.relaxng(@opt.cmd)
       #rng
-      schema=SiSU_Env::System_call.new(rnc_src,rng_file)
+      schema=SiSU_Env::SystemCall.new(rnc_src,rng_file)
       schema.relaxng(@opt.cmd)
       #rnc
       FileUtils::cp(rnc_src,rnc_file)
@@ -220,7 +220,7 @@ module SiSU_Initialize
       rnc=File.new(rnc_file,'w')
       rnc << @rxng.rnc_model_output_sax
       rnc.close
-      schema=SiSU_Env::System_call.new(rnc_file,dtd_file)
+      schema=SiSU_Env::SystemCall.new(rnc_file,dtd_file)
       schema.relaxng(@opt.cmd)
     end
     def trang_rnc_model_input_dom
@@ -229,7 +229,7 @@ module SiSU_Initialize
       rnc=File.new(rnc_file,'w')
       rnc << @rxng.rnc_model_output_dom
       rnc.close
-      schema=SiSU_Env::System_call.new(rnc_file,dtd_file)
+      schema=SiSU_Env::SystemCall.new(rnc_file,dtd_file)
       schema.relaxng(@opt.cmd)
     end
     def trang_rnc_model_input_node
@@ -239,7 +239,7 @@ module SiSU_Initialize
       rnc=File.new(rnc_file,'w')
       rnc << @rxng.rnc_model_input_node
       rnc.close
-      schema=SiSU_Env::System_call.new(rnc_file,dtd_file)
+      schema=SiSU_Env::SystemCall.new(rnc_file,dtd_file)
       schema.relaxng(@opt.cmd)
     end
   end
diff --git a/lib/sisu/v3dv/css.rb b/lib/sisu/v3dv/css.rb
index 348c89e7..522aae7e 100644
--- a/lib/sisu/v3dv/css.rb
+++ b/lib/sisu/v3dv/css.rb
@@ -61,7 +61,7 @@ module SiSU_Style
   require_relative 'defaults'                           # defaults.rb
   class CSS
     def initialize
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def fonts
       @vz.font_fonts
diff --git a/lib/sisu/v3dv/dal.rb b/lib/sisu/v3dv/dal.rb
index 15f916ca..a8527e6d 100644
--- a/lib/sisu/v3dv/dal.rb
+++ b/lib/sisu/v3dv/dal.rb
@@ -94,9 +94,9 @@ module SiSU_DAL
       @opt,@fnx=opt,fnx
       @@fns||@opt.fns
       @make_fns=if @fnx and @fnx =~/\.ss[tmi]$/
-        SiSU_Env::Info_file.new(@fnx)
+        SiSU_Env::InfoFile.new(@fnx)
       else
-        SiSU_Env::Info_file.new(@opt.fns)
+        SiSU_Env::InfoFile.new(@opt.fns)
       end
       @fnm=@make_fns.marshal.dal_metadata
       @fnc=@make_fns.marshal.dal_content
@@ -106,8 +106,8 @@ module SiSU_DAL
       @idx_xhtml=@make_fns.marshal.dal_idx_xhtml
       @map_nametags=@make_fns.marshal.dal_map_nametags
       @map_ocn_htmlseg=@make_fns.marshal.dal_map_ocn_htmlseg
-      SiSU_Env::Create_system_link.new.images
-      @env=SiSU_Env::Info_env.new
+      SiSU_Env::CreateSystemLink.new.images
+      @env=SiSU_Env::InfoEnv.new
     end
     def read                                                                   #creates dal
       begin
@@ -117,7 +117,7 @@ module SiSU_DAL
         ? @fnx
         : @opt.fns
         create_dal
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@@fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@@fns).error
       ensure
         Instantiate.new
       end
@@ -133,7 +133,7 @@ module SiSU_DAL
           @@dal_array=[]
         end
         dal=(@@dal_array.empty?) ? read_fnc : @@dal_array.dup
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -149,7 +149,7 @@ module SiSU_DAL
           @@idx_arr[:sst]=[]
         end
         dal=(@@idx_arr[:sst].empty?) ? read_idx_sst : @@idx_arr[:sst].dup #check
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -165,7 +165,7 @@ module SiSU_DAL
           @@idx_arr[:tex]=[]
         end
         dal=(@@idx_arr[:tex].empty?) ? read_idx_tex : @@idx_arr[:tex].dup #check
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -181,7 +181,7 @@ module SiSU_DAL
           @@idx_arr[:html]=[]
         end
         dal=(@@idx_arr[:html].empty?) ? read_idx_html : @@idx_arr[:html].dup
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -197,7 +197,7 @@ module SiSU_DAL
           @@idx_arr[:xthml]=[]
         end
         dal=(@@idx_arr[:xhtml].empty?) ? read_idx_xhtml : @@idx_arr[:xhtml].dup
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -213,7 +213,7 @@ module SiSU_DAL
           @@map_arr[:nametags]=[]
         end
         dal=(@@map_arr[:nametags].empty?) ? read_map_nametags : @@map_arr[:nametags].dup
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -229,7 +229,7 @@ module SiSU_DAL
           @@map_arr[:ocn_htmlseg]=[]
         end
         dal=(@@map_arr[:ocn_htmlseg].empty?) ? read_map_ocn_htmlseg : @@map_arr[:ocn_htmlseg].dup
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -257,7 +257,7 @@ module SiSU_DAL
       meta=nil
       dal=SiSU_DAL::Make.new(fn,@md,file_array).song
       if @opt.cmd =~/[vM]/
-        cf=SiSU_Env::Create_file.new(fn)
+        cf=SiSU_Env::CreateFile.new(fn)
         SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"~meta/#{@opt.fns}.meta").output if @opt.cmd =~/v/i
         SiSU_Screen::Ansi.new(@opt.cmd,"dal -> #{cf.meta}").txt_grey if @opt.cmd =~/M/
       end
@@ -340,9 +340,9 @@ module SiSU_DAL
   class Output
     def initialize(fn,md,data)
       @fn,@md,@data=fn,md,data
-      @cf=SiSU_Env::Create_file.new(@fn)
-      @make=SiSU_Env::Info_file.new(@fn)
-      @dir=SiSU_Env::Info_env.new(@fn)
+      @cf=SiSU_Env::CreateFile.new(@fn)
+      @make=SiSU_Env::InfoFile.new(@fn)
+      @dir=SiSU_Env::InfoEnv.new(@fn)
     end
     def screen_dump(o)
       if defined? o.of
@@ -465,7 +465,7 @@ module SiSU_DAL
   class Make
     def initialize(fn,md,data)
       @fn,@md,@data=fn,md,data
-      @env=SiSU_Env::Info_env.new(@md.fns)
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
     end
     def reset
       @@flag_vocab=0
@@ -482,7 +482,7 @@ module SiSU_DAL
       data,endnote_array=SiSU_CharacterCheck::Check.new(data).character_check_and_oldstyle_endnote_array              # dal_character_check.rb
       data=SiSU_Images::Images.new(@md,data).images                                                                    # dal_images.rb
       data,tags_map,ocn_html_seg_map=SiSU_Numbering::Numbering.new(@md,data).numbering_song                            # dal_numbering.rb
-      data,book_index_rel,book_index_rel_html_seg,html_idx,xhtml_idx=SiSU_BookIndex::Book_index.new(@md,data,@env).indexing_song if @md.book_idx  # dal_idx.rb
+      data,book_index_rel,book_index_rel_html_seg,html_idx,xhtml_idx=SiSU_BookIndex::BookIndex.new(@md,data,@env).indexing_song if @md.book_idx  # dal_idx.rb
       data=SiSU_Endnotes::Endnotes.new(@md,data,endnote_array).endnotes                                                # dal_endnotes.rb
       outputdata=data
       if @md.opt.cmd =~/[mM]/
diff --git a/lib/sisu/v3dv/dal_doc_objects.rb b/lib/sisu/v3dv/dal_doc_objects.rb
index 904c8448..11ccb0d0 100644
--- a/lib/sisu/v3dv/dal_doc_objects.rb
+++ b/lib/sisu/v3dv/dal_doc_objects.rb
@@ -62,7 +62,7 @@ module SiSU_DocumentStructure
       obj=h ? h : o
     end
   end
-  class Object_metadata
+  class ObjectMetadata
     attr_accessor :is,:of,:tags,:obj,:digest
     def initialize
       @tags={}
@@ -78,7 +78,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_meta
+  class ObjectMeta
     attr_accessor :obj,:is,:of,:tag,:digest,:tmp
     def initialize
       @is=@obj=@tag=@digest=@digest=@tmp=nil
@@ -95,7 +95,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_heading
+  class ObjectHeading
     attr_accessor :obj,:is,:tags,:of,:lv,:ln,:toc_,:name,:idx,:ocn,:odv,:osp,:node,:parent,:ocn_,:note_,:autonum_,:digest,:tmp
     def initialize
       @of='para'
@@ -166,7 +166,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_para
+  class ObjectPara
     attr_accessor :obj,:is,:tags,:of,:name,:idx,:bullet_,:indent,:hang,:ocn,:odv,:osp,:parent,:note_,:image_,:ocn_,:digest,:tmp
     def initialize
       @of='para'
@@ -222,7 +222,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_block_txt
+  class ObjectBlockTxt
     attr_accessor :obj,:is,:of,:tags,:idx,:ocn,:odv,:osp,:parent,:note_,:number_,:ocn_,:digest,:tmp
     def initialize
       @of='block'
@@ -326,7 +326,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_table
+  class ObjectTable
     attr_accessor :obj,:is,:of,:lv,:tags,:name,:idx,:indent,:hang,:size,:ocn,:number,:head_,:cols,:widths,:odv,:osp,:parent,:note_,:ocn_,:digest,:tmp
     def initialize
       @of='block'
@@ -356,7 +356,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_image
+  class ObjectImage
     attr_accessor :obj,:is,:of,:lv,:idx,:size,:ocn,:parent,:note_,:ocn_,:digest,:tmp
     def initialize
       @of='image'
@@ -384,7 +384,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_structure
+  class ObjectStructure
     attr_accessor :obj,:tag,:node,:lv,:ln,:status,:is,:of,:tmp
     def initialize
       @of='structure'
@@ -403,7 +403,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_comment
+  class ObjectComment
     attr_accessor :obj,:is,:of,:tmp
     def initialize
       @of='comment'
@@ -418,7 +418,7 @@ module SiSU_DocumentStructure
       self
     end
   end
-  class Object_layout
+  class ObjectLayout
     attr_accessor :obj,:is,:of,:tmp
     def initialize
       @of='layout'
diff --git a/lib/sisu/v3dv/dal_doc_str.rb b/lib/sisu/v3dv/dal_doc_str.rb
index 92be87fb..e51320cb 100644
--- a/lib/sisu/v3dv/dal_doc_str.rb
+++ b/lib/sisu/v3dv/dal_doc_str.rb
@@ -70,8 +70,8 @@ module SiSU_DocumentStructureExtract
     def initialize(md,data)
       @md,@data=md,data
       Instantiate.new
-      @pb=SiSU_DocumentStructure::Object_layout.new.break(Hx[:br_page])
-      @pbn=SiSU_DocumentStructure::Object_layout.new.break(Hx[:br_page_new])
+      @pb=SiSU_DocumentStructure::ObjectLayout.new.break(Hx[:br_page])
+      @pbn=SiSU_DocumentStructure::ObjectLayout.new.break(Hx[:br_page_new])
     end
     def ln_get(lv)
       ln=case lv
@@ -173,7 +173,7 @@ module SiSU_DocumentStructureExtract
           when /^%+\s/                                     #comment
             t_o=if t_o=~/^%+\s+(.+)/
               h={obj: $1}
-              SiSU_DocumentStructure::Object_comment.new.comment(h)
+              SiSU_DocumentStructure::ObjectComment.new.comment(h)
             else nil
             end
           when /^:?([A-C1-6])\~/                           #heading / lv
@@ -184,19 +184,19 @@ module SiSU_DocumentStructureExtract
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj)
               h={ lv: lv, ln: ln, obj: obj, idx: idx, tags: tags }
-              SiSU_DocumentStructure::Object_heading.new.heading(h)
+              SiSU_DocumentStructure::ObjectHeading.new.heading(h)
             elsif t_o=~/^:?[A-C1-6]\~(\S+?)-\s+(.+)/m
               name,obj=$1,$2
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj)
               h={ lv: lv, name: name, obj: obj, idx: idx, autonum_: false, tags: tags}
-              SiSU_DocumentStructure::Object_heading.new.heading(h)
+              SiSU_DocumentStructure::ObjectHeading.new.heading(h)
             elsif t_o=~/^:?[A-C1-6]\~(\S+)\s+(.+)/m
               name,obj=$1,$2
               note=endnote_test?(obj)
               obj,tags=extract_tags(obj,name)
               h={ lv: lv, name: name, obj: obj, idx: idx, tags: tags }
-              SiSU_DocumentStructure::Object_heading.new.heading(h)
+              SiSU_DocumentStructure::ObjectHeading.new.heading(h)
             else nil
             end
           when /^_(?:[1-9]!?|[1-9]?\*)\s+/                  #indented and/or bullet paragraph
@@ -213,7 +213,7 @@ module SiSU_DocumentStructureExtract
               obj,tags=extract_tags(obj)
               unless obj=~/\A\s*\Z/m
                 h={ bullet_: bullet, hang: hang, indent: indent, obj: obj, idx: idx, note_: note, image_: image, tags: tags }
-                SiSU_DocumentStructure::Object_para.new.paragraph(h)
+                SiSU_DocumentStructure::ObjectPara.new.paragraph(h)
               end
             else nil
             end
@@ -230,23 +230,23 @@ module SiSU_DocumentStructureExtract
               obj,tags=extract_tags(obj)
               unless obj=~/\A\s*\Z/m
                 h={ hang: hang, indent: indent, obj: obj, idx: idx, note_: note, image_: image, tags: tags }
-                SiSU_DocumentStructure::Object_para.new.paragraph(h)
+                SiSU_DocumentStructure::ObjectPara.new.paragraph(h)
               end
             else nil
             end
           when /^[<\[](?:br)?:(?:pa?r|o(?:bj|---)?)[>\]]\s*$/                  #[br:par] #[br:obj]
-            SiSU_DocumentStructure::Object_layout.new.break(Hx[:br_obj])
+            SiSU_DocumentStructure::ObjectLayout.new.break(Hx[:br_obj])
           when /^(?:[<\[](?:br)?:pg[>\]]|<?:pb>?)\s*$/                         #[br:pg]
-            SiSU_DocumentStructure::Object_layout.new.break(Hx[:br_page])
+            SiSU_DocumentStructure::ObjectLayout.new.break(Hx[:br_page])
           when /^[<\[](?:br)?:pg?n[>\]]\s*$/                                   #[br:pgn]
-            SiSU_DocumentStructure::Object_layout.new.break(Hx[:br_page_new])
+            SiSU_DocumentStructure::ObjectLayout.new.break(Hx[:br_page_new])
           else                                             #paragraph
             image=image_test(t_o)
             note=endnote_test?(t_o)
             obj,tags=extract_tags(t_o)
             unless obj=~/\A\s*\Z/m
               h={ bullet_: false, indent: 0, hang: 0, obj: obj, idx: idx, note_: note, image_: image, tags: tags }
-              SiSU_DocumentStructure::Object_para.new.paragraph(h)
+              SiSU_DocumentStructure::ObjectPara.new.paragraph(h)
             end
           end
         elsif not @@flag['code']
@@ -255,30 +255,30 @@ module SiSU_DocumentStructureExtract
             @@counter=1
             @codeblock_numbered=(t_o =~/^code\{#/) ? true : false
             h={ obj: 'code block start' }                   #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
           elsif t_o =~/^poem\{/
             @@flag['poem']=true
             h={ obj: 'poem start' }                         #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
             tuned_file << t_o
           elsif t_o =~/^group\{/
             @@flag['group']=true
             h={ obj: 'group text start' }                   #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
             tuned_file << t_o
           elsif t_o =~/^block\{/
             @@flag['block']=true
             h={ obj: 'block text start' }                   #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
             tuned_file << t_o
           elsif t_o =~/^alt\{/
             @@flag['alt']=true
             h={ obj: 'alt text start' }                     #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
             tuned_file << t_o
           elsif t_o =~/^(?:table\{|\{table)[ ~]/
             h={ obj: 'table start' }                        #introduce a counter
-            ins=SiSU_DocumentStructure::Object_comment.new.comment(h) #ins=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            ins=SiSU_DocumentStructure::ObjectComment.new.comment(h) #ins=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
             tuned_file << ins
             if t_o=~/^table\{(?:~h)?\s+/
               @@flag['table']=true
@@ -318,10 +318,10 @@ module SiSU_DocumentStructureExtract
                 cols.times { col << width }
               end
               h={ head_: hd, cols: cols, widths: col, obj: rows, idx: idx, tags: tags }
-              t_o=SiSU_DocumentStructure::Object_table.new.table(h) unless h.nil?
+              t_o=SiSU_DocumentStructure::ObjectTable.new.table(h) unless h.nil?
               tuned_file << t_o
               h={ obj: 'table end' }                        #introduce a counter
-              t_o=SiSU_DocumentStructure::Object_comment.new.comment(h)
+              t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h)
               t_o
             elsif t_o=~/^\{table(?:~h)?\s+/
               m1,m2,hd=nil,nil,nil
@@ -341,10 +341,10 @@ module SiSU_DocumentStructureExtract
                 rows += r + Mx[:tc_c]
               end
               h={ head_: hd, cols: col.length, widths: col, obj: rows, idx: idx, tags: tags }
-              t_o=SiSU_DocumentStructure::Object_table.new.table(h) unless h.nil?
+              t_o=SiSU_DocumentStructure::ObjectTable.new.table(h) unless h.nil?
               tuned_file << t_o
               h={ obj: 'table end' }                        #introduce a counter
-              t_o=SiSU_DocumentStructure::Object_comment.new.comment(h)
+              t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h)
               t_o
             end
           end
@@ -356,12 +356,12 @@ module SiSU_DocumentStructureExtract
             @@flag['table']=false
             headings,columns,widths,idx=@h[:head_],@h[:cols],@h[:widths],@h[:idx]
             @h={ head_: headings, cols: columns, widths: widths, idx: idx, obj: @rows }
-            t_o=SiSU_DocumentStructure::Object_table.new.table(@h)
+            t_o=SiSU_DocumentStructure::ObjectTable.new.table(@h)
             tuned_file << t_o
             @h,@rows=nil,''
             t_o
             h={ obj: 'table end' }                          #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
             t_o
           else
             if t_o !~/^table\{/ \
@@ -379,11 +379,11 @@ module SiSU_DocumentStructureExtract
             obj=@tuned_code.join("\n")
             tags=[]
             h={ obj: obj, tags: tags, number_: @codeblock_numbered }
-            t_o=SiSU_DocumentStructure::Object_block_txt.new.code(h)
+            t_o=SiSU_DocumentStructure::ObjectBlockTxt.new.code(h)
             @tuned_code=[]
             tuned_file << t_o
             h={ obj: 'code block end' }                     #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
           end
           if @@flag['code'] \
           and t_o.class==String \
@@ -404,37 +404,37 @@ module SiSU_DocumentStructureExtract
           and t_o =~/^\}poem/
             @@flag['poem']=false
             h={ obj: 'poem end' }                           #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
           elsif ( @@flag['group'] \
           and t_o =~/^\}group/ )
             @@flag['group']=false
             obj,tags=extract_tags(@tuned_block.join("\n"))
             h={ obj: obj, tags: tags }
             @tuned_block=[]
-            t_o=SiSU_DocumentStructure::Object_block_txt.new.group(h)
+            t_o=SiSU_DocumentStructure::ObjectBlockTxt.new.group(h)
             tuned_file << t_o
             h={ obj: 'group text end' }                     #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
           elsif ( @@flag['block'] \
           and t_o =~/^\}block/ )
             @@flag['block']=false
             obj,tags=extract_tags(@tuned_block.join("\n"))
             h={ obj: obj, tags: tags }
             @tuned_block=[]
-            t_o=SiSU_DocumentStructure::Object_block_txt.new.block(h)
+            t_o=SiSU_DocumentStructure::ObjectBlockTxt.new.block(h)
             tuned_file << t_o
             h={ obj: 'block text end' }                     #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
           elsif ( @@flag['alt'] \
           and t_o =~/^\}alt/ )
             @@flag['alt']=false
             obj,tags=extract_tags(@tuned_block.join("\n"))
             h={ obj: obj, tags: tags }
-            t_o=SiSU_DocumentStructure::Object_block_txt.new.alt(h)
+            t_o=SiSU_DocumentStructure::ObjectBlockTxt.new.alt(h)
             @tuned_block=[]
             tuned_file << t_o
             h={ obj: 'alt text end' }                       #introduce a counter
-            t_o=SiSU_DocumentStructure::Object_comment.new.comment(h) #t_o=SiSU_DocumentStructure::Object_layout.new.insert(h)
+            t_o=SiSU_DocumentStructure::ObjectComment.new.comment(h) #t_o=SiSU_DocumentStructure::ObjectLayout.new.insert(h)
           end
           if @@flag['poem'] \
           or @@flag['group'] \
@@ -450,7 +450,7 @@ module SiSU_DocumentStructureExtract
               v.gsub!(/\n/m,"#{Mx[:br_nl]}\n")
               obj,tags=extract_tags(v)
               h={ obj: obj, tags: tags }
-              t_o=SiSU_DocumentStructure::Object_block_txt.new.verse(h)
+              t_o=SiSU_DocumentStructure::ObjectBlockTxt.new.verse(h)
               tuned_file << t_o
             end
             else 'group'
@@ -484,32 +484,32 @@ module SiSU_DocumentStructureExtract
       if @md.flag_endnotes
         tuned_file << @pb
         h={ ln: 2, obj: 'Endnotes', autonum_: false }
-        tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+        tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
         h={ ln: 4, obj: 'Endnotes', name: 'endnotes', autonum_: false }
-        tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+        tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
         h={ obj: 'Endnotes' }
       end
       if @md.book_idx
         tuned_file << @pb
         h={ ln: 2, obj: 'Index', autonum_: false }
-        tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+        tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
         h={ ln: 4, obj: 'Index', name: 'book_index', autonum_: false }
-        tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+        tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
         h={ obj: 'Index' }
       end
       tuned_file << @pb
       h={ ln: 2, obj: 'Metadata', autonum_: false, ocn_: false }
-      tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+      tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
       h={ ln: 4, obj: 'SiSU Metadata, document information', name: 'metadata', autonum_: false, ocn_: false }
-      tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+      tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
       tuned_file << @pb
       h={ ln: 2, obj: 'Manifest', autonum_: false, ocn_: false }
-      tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+      tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
       h={ ln: 4, obj: 'SiSU Manifest, alternative outputs etc.', name: 'sisu_manifest', autonum_: false, ocn_: false }
-      tuned_file << SiSU_DocumentStructure::Object_heading.new.heading_insert(h)
+      tuned_file << SiSU_DocumentStructure::ObjectHeading.new.heading_insert(h)
       tuned_file
       h={ obj: 'eof' }
-      meta=SiSU_DocumentStructure::Object_metadata.new.metadata(@metadata)
+      meta=SiSU_DocumentStructure::ObjectMetadata.new.metadata(@metadata)
       [tuned_file,meta]
     end
     def table_rows_and_columns_array(table_str)
@@ -522,24 +522,24 @@ module SiSU_DocumentStructureExtract
     end
     def meta_heading(h)
       h={ lv: h[:lv], ln: h[:ln], name: h[:name], obj: h[:obj], ocn: '0' }
-      SiSU_DocumentStructure::Object_heading.new.heading(h)
+      SiSU_DocumentStructure::ObjectHeading.new.heading(h)
     end
     def meta_para(str)
       h={ obj: str, ocn_: false }
-      SiSU_DocumentStructure::Object_para.new.paragraph(h)
+      SiSU_DocumentStructure::ObjectPara.new.paragraph(h)
     end
     def metadata
       meta=[]
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       base_html="#{dir.url.root}/#{@md.fnb}"
-      l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+      l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
       language=l[:n]
       tr=SiSU_Translate::Source.new(@md,language)
       meta << @pb
       h={ ln: 2, obj: 'Metadata', ocn_: false }
-      meta << SiSU_DocumentStructure::Object_heading.new.heading(h)
+      meta << SiSU_DocumentStructure::ObjectHeading.new.heading(h)
       h={ ln: 4, name: 'metadata', obj: 'Metadata', autonum_: false, ocn_: false }
-      meta << SiSU_DocumentStructure::Object_heading.new.heading(h) #add ocnm
+      meta << SiSU_DocumentStructure::ObjectHeading.new.heading(h) #add ocnm
       s="Document Manifest @\n #{base_html}/#{@md.fn[:manifest]}"
       meta << meta_para(s)
       s="#{Mx[:fa_bold_o]}Dublin Core#{Mx[:fa_bold_c]} (DC)" #add ocnm
@@ -781,22 +781,22 @@ module SiSU_DocumentStructureExtract
         @dob=case @dob.obj
         when /^#{@md.lv1}/
           h={ lv: 'A', ln: 1 }
-          SiSU_DocumentStructure::Object_heading.new.heading(h,@dob)
+          SiSU_DocumentStructure::ObjectHeading.new.heading(h,@dob)
         when /^#{@md.lv2}/
           h={ lv: 'B', ln: 2 }
-          SiSU_DocumentStructure::Object_heading.new.heading(h,@dob)
+          SiSU_DocumentStructure::ObjectHeading.new.heading(h,@dob)
         when /^#{@md.lv3}/
           h={ lv: 'C', ln: 3 }
-          SiSU_DocumentStructure::Object_heading.new.heading(h,@dob)
+          SiSU_DocumentStructure::ObjectHeading.new.heading(h,@dob)
         when /^#{@md.lv4}/
           h={ lv: '1', ln: 4 }
-          SiSU_DocumentStructure::Object_heading.new.heading(h,@dob)
+          SiSU_DocumentStructure::ObjectHeading.new.heading(h,@dob)
         when /^#{@md.lv5}/
           h={ lv: '2', ln: 5 }
-          SiSU_DocumentStructure::Object_heading.new.heading(h,@dob)
+          SiSU_DocumentStructure::ObjectHeading.new.heading(h,@dob)
         when /^#{@md.lv6}/
           h={ lv: '3', ln: 6 }
-          SiSU_DocumentStructure::Object_heading.new.heading(h,@dob)
+          SiSU_DocumentStructure::ObjectHeading.new.heading(h,@dob)
         else @dob
         end
       else @dob
@@ -954,19 +954,19 @@ module SiSU_DocumentStructureExtract
           dob.obj.gsub!(/#{Mx[:pa_non_object_no_heading]}/,'')
           if dob.is=='para'
             h={ obj: dob.obj, ocn_: false, ocn: nil }
-            dob=SiSU_DocumentStructure::Object_para.new.paragraph(h,dob)
+            dob=SiSU_DocumentStructure::ObjectPara.new.paragraph(h,dob)
           elsif dob.is=='heading'
             h={ obj: dob.obj, ocn_: false, ocn: nil, toc_: true }
-            dob=SiSU_DocumentStructure::Object_heading.new.heading(h,dob)
+            dob=SiSU_DocumentStructure::ObjectHeading.new.heading(h,dob)
           end
         elsif dob.obj=~/#{Mx[:pa_non_object_dummy_heading]}/
           dob.obj.gsub!(/#{Mx[:pa_non_object_dummy_heading]}/,'')
           if dob.is=='para'
             h={ obj: dob.obj, ocn_: false, ocn: nil }
-            dob=SiSU_DocumentStructure::Object_para.new.paragraph(h,dob)
+            dob=SiSU_DocumentStructure::ObjectPara.new.paragraph(h,dob)
           elsif dob.is=='heading'
             h={ obj: dob.obj, ocn_: false, ocn: nil, toc_: false }
-            dob=SiSU_DocumentStructure::Object_heading.new.heading(h,dob)
+            dob=SiSU_DocumentStructure::ObjectHeading.new.heading(h,dob)
           end
         else dob
         end
@@ -1080,7 +1080,7 @@ module SiSU_DocumentStructureExtract
       when '6'; 9
       end
       h={ tag: tag, node: o[:node], lv: o[:lv], ln: ln, status: o[:status] }
-      SiSU_DocumentStructure::Object_structure.new.xml_dom(h) #downstream code utilise else ignore like comments
+      SiSU_DocumentStructure::ObjectStructure.new.xml_dom(h) #downstream code utilise else ignore like comments
     end
     def tag_open(o,tag)
       t={ lv: tag[o.ln], node: o.node, status: 'open' }
diff --git a/lib/sisu/v3dv/dal_expand_insertions.rb b/lib/sisu/v3dv/dal_expand_insertions.rb
index a2808dbb..cbcc3876 100644
--- a/lib/sisu/v3dv/dal_expand_insertions.rb
+++ b/lib/sisu/v3dv/dal_expand_insertions.rb
@@ -62,7 +62,7 @@ module SiSU_Insertions
       @md,@data=md,data
     end
     def output_filetypes_in_cmd(cmd_shortcut,lnk=nil) #make list of file types in shortcut command (as configured), e.g. when sisu -3 is used
-      cf_defaults=SiSU_Env::Info_processing_flag.new
+      cf_defaults=SiSU_Env::InfoProcessingFlag.new
       cmd_list=case cmd_shortcut.inspect
       when /0/; cf_defaults.cf_0
       when /1/; cf_defaults.cf_1
@@ -270,7 +270,7 @@ module SiSU_Insertions
         and not codeblock_ \
         and para =~/\{(?:~\^\s+)?(.+?)\s\[(?:\d(?:[sS]*))\]\}(?:\.\.\/\S+?\/|\S+?\.ss[tm]\b)/
           txt,cmd,source,linked_doc,note,manifest=nil,nil,nil,nil,nil,nil
-          @u=SiSU_Env::Info_env.new.url
+          @u=SiSU_Env::InfoEnv.new.url
           pre=txt=cmd=source=linked_doc=note=''
           if defined? @u.remote
             if /(?<pre>.+?)\{(?<txt>.+?)\s\[(?<cmd>\d[sS]*)\]\}(?<source>(?<linked_doc>\S+?)\.ss[tm]\b)(?<note>.*)/m =~ para
diff --git a/lib/sisu/v3dv/dal_hash_digest.rb b/lib/sisu/v3dv/dal_hash_digest.rb
index 23fcc0de..941d5cf9 100644
--- a/lib/sisu/v3dv/dal_hash_digest.rb
+++ b/lib/sisu/v3dv/dal_hash_digest.rb
@@ -58,10 +58,10 @@
 =end
 module SiSU_Hash
   require_relative 'shared_markup_alt.rb'               #shared_markup_alt.rb
-  class Object_digest
+  class ObjectDigest
     def initialize(md,data,env=nil)
       @md,@data,@env=md,data,env
-      @env ||=SiSU_Env::Info_env.new(@md.fns)
+      @env ||=SiSU_Env::InfoEnv.new(@md.fns)
     end
     def object_digest
     # 1. clean/stripped text without any markup, paragraph, headings etc. without endnotes
@@ -120,7 +120,7 @@ module SiSU_Hash
       t_obj=t_o.inspect.sub(/:0x[0-9a-f]{8}\s/,': ')
       stripped=SiSU_TextRepresentation::Alter.new(t_o).strip_clean_of_markup
       markup=SiSU_TextRepresentation::Alter.new(t_o).semi_revert_markup
-      digests=SiSU_TextRepresentation::Modified_text_plus_Hash_digest.new(@md,t_o).composite.dgst
+      digests=SiSU_TextRepresentation::ModifiedTextPlusHashDigest.new(@md,t_o).composite.dgst
       unless t_o.is=='code'
         case t_o.obj
         when /#{Mx[:en_a_o]}[\d*+]+\s+.+?#{Mx[:en_a_c]}|#{Mx[:en_b_o]}[*+]\d+\s+.+?#{Mx[:en_b_c]}/m
diff --git a/lib/sisu/v3dv/dal_idx.rb b/lib/sisu/v3dv/dal_idx.rb
index 747c7919..63c6c846 100644
--- a/lib/sisu/v3dv/dal_idx.rb
+++ b/lib/sisu/v3dv/dal_idx.rb
@@ -57,13 +57,13 @@
 
 =end
 module SiSU_BookIndex
-  class Book_index
+  class BookIndex
     def initialize(md,data,env=nil)
       @md,@data,@env=md,data,env
       @rgx_idx=/#{Mx[:idx_o]}(?:.+?)#{Mx[:idx_c]}\s*/
       @rgx_idx_ocn_seg=/(.+?)~(\d+)~(\S+)/
       @rgx_idx_ocn=/(.+?)~(\d+)/
-      @env ||=SiSU_Env::Info_env.new(@md.fns)
+      @env ||=SiSU_Env::InfoEnv.new(@md.fns)
     end
     def indexing_song
       data=@data
@@ -164,15 +164,15 @@ module SiSU_BookIndex
       idx={}
       idx[:sst_rel_html_seg],idx[:sst_rel],idx[:html],idx[:xhtml]=[],[],[],[]
       h={obj: Mx[:br_page]}
-      o=SiSU_DocumentStructure::Object_layout.new.break(h)
+      o=SiSU_DocumentStructure::ObjectLayout.new.break(h)
       idx[:sst_rel_html_seg] << o
       idx[:sst_rel] << o
       h={lv: '2', name: 'index', obj: "Index"}
-      o=SiSU_DocumentStructure::Object_heading.new.heading(h)
+      o=SiSU_DocumentStructure::ObjectHeading.new.heading(h)
       idx[:sst_rel_html_seg] << o
       idx[:sst_rel] << o
       h={lv: '4', name: 'idx', obj: " [Index] #{Mx[:pa_non_object_dummy_heading]}"}
-      o=SiSU_DocumentStructure::Object_heading.new.heading(h)
+      o=SiSU_DocumentStructure::ObjectHeading.new.heading(h)
       idx[:sst_rel_html_seg] << o
       idx[:sst_rel] << o
       alph=%W[9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z]
diff --git a/lib/sisu/v3dv/dal_images.rb b/lib/sisu/v3dv/dal_images.rb
index 24ed17e2..87a6f756 100644
--- a/lib/sisu/v3dv/dal_images.rb
+++ b/lib/sisu/v3dv/dal_images.rb
@@ -67,7 +67,7 @@ module SiSU_Images
       data=@data
       tuned_file=[]
       @rmgk=false
-      imagemagick_=true      #imagemagick_=SiSU_Env::Info_settings.new.program?('rmagick')
+      imagemagick_=true      #imagemagick_=SiSU_Env::InfoSettings.new.program?('rmagick')
       if imagemagick_
         begin
           @rmgk=SiSU_Env::Load.new('RMagick').prog
@@ -89,7 +89,7 @@ module SiSU_Images
                 imgs=dob.obj.scan(m).flatten
                 img_col=img_row=nil
                 images=imgs.each do |image|
-                  dir=SiSU_Env::Info_env.new(@md.fns)
+                  dir=SiSU_Env::InfoEnv.new(@md.fns)
                   path_image=[dir.path.image_source_include_local,dir.path.image_source_include_remote,dir.path.image_source_include]
                   image_path=nil
                   path_image.each do |img_pth|
@@ -104,8 +104,8 @@ module SiSU_Images
                       if @md.opt.cmd =~/[vVM]/
                         SiSU_Screen::Ansi.new(@md.opt.cmd,'RMagick not present, will attempt to use imagemagick (identify) directly').warn
                       end
-                      imgk=SiSU_Env::System_call.new.imagemagick
-                      gmgk=SiSU_Env::System_call.new.graphicksmagick
+                      imgk=SiSU_Env::SystemCall.new.imagemagick
+                      gmgk=SiSU_Env::SystemCall.new.graphicksmagick
                       if imgk or gmgk
                         if imgk
                           imgsys=`identify #{image_path}/#{image}`.strip                           #system call
diff --git a/lib/sisu/v3dv/dal_metadata.rb b/lib/sisu/v3dv/dal_metadata.rb
index 405be322..2c6d133e 100644
--- a/lib/sisu/v3dv/dal_metadata.rb
+++ b/lib/sisu/v3dv/dal_metadata.rb
@@ -60,17 +60,17 @@ module SiSU_Metadata
   class Metadata
     def initialize(md,metad)
       @md,@metadata=md,metad
-      l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+      l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
       language=l[:n]
       @tr=SiSU_Translate::Source.new(md,language)
     end
     def make_para(obj,ocn)
       h={ obj: obj, ocn: 0 }
-      SiSU_DocumentStructure::Object_para.new.paragraph(h)
+      SiSU_DocumentStructure::ObjectPara.new.paragraph(h)
     end
     def make_heading(obj,ocn,name,lv,ln)
       h={ lv: lv, ln: ln, name: name, obj: obj, ocn: 0 }
-      SiSU_DocumentStructure::Object_heading.new.heading(h)
+      SiSU_DocumentStructure::ObjectHeading.new.heading(h)
     end
     def metadata
     end
diff --git a/lib/sisu/v3dv/dal_numbering.rb b/lib/sisu/v3dv/dal_numbering.rb
index dea9f6ca..cd543450 100644
--- a/lib/sisu/v3dv/dal_numbering.rb
+++ b/lib/sisu/v3dv/dal_numbering.rb
@@ -343,9 +343,9 @@ module SiSU_Numbering
           m=dob.ln.to_s
           dob_tmp=[]
           if @md.pagenew.inspect =~/#{m}/
-            dob_tmp << SiSU_DocumentStructure::Object_layout.new.break(Hx[:br_page_new]) << dob
+            dob_tmp << SiSU_DocumentStructure::ObjectLayout.new.break(Hx[:br_page_new]) << dob
           elsif @md.pagebreak.inspect =~/#{m}/
-            dob_tmp << SiSU_DocumentStructure::Object_layout.new.break(Hx[:br_page]) << dob
+            dob_tmp << SiSU_DocumentStructure::ObjectLayout.new.break(Hx[:br_page]) << dob
           end
           para_result=unless dob_tmp.length > 0; dob
           else                                   dob_tmp
diff --git a/lib/sisu/v3dv/dal_substitutions_and_insertions.rb b/lib/sisu/v3dv/dal_substitutions_and_insertions.rb
index 08f04366..a16ada75 100644
--- a/lib/sisu/v3dv/dal_substitutions_and_insertions.rb
+++ b/lib/sisu/v3dv/dal_substitutions_and_insertions.rb
@@ -60,7 +60,7 @@ module SiSU_SubstituteAndInsert
   class SI
     def initialize(md,data)
       @md,@data=md,data
-      @skin=SiSU_Env::Info_skin.new(@md)
+      @skin=SiSU_Env::InfoSkin.new(@md)
     end
     def substitutions_and_insertions?
       data=@data
diff --git a/lib/sisu/v3dv/dal_syntax.rb b/lib/sisu/v3dv/dal_syntax.rb
index 3251a26d..39a4c689 100644
--- a/lib/sisu/v3dv/dal_syntax.rb
+++ b/lib/sisu/v3dv/dal_syntax.rb
@@ -65,11 +65,11 @@ module SiSU_Syntax
   class Markup
     def initialize(md='',data='')
       @data,@md=data,md
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
       @data_new=[]
-      url_and_stub=SiSU_Env::Info_env.new.url
+      url_and_stub=SiSU_Env::InfoEnv.new.url
       @output_url="#{url_and_stub.remote}"
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
       emph_set=if defined? @md.make.emphasis \
       and not @md.make.emphasis.nil?
         @md.make.emphasis
diff --git a/lib/sisu/v3dv/db_columns.rb b/lib/sisu/v3dv/db_columns.rb
index 57581073..89d4c7e3 100644
--- a/lib/sisu/v3dv/db_columns.rb
+++ b/lib/sisu/v3dv/db_columns.rb
@@ -63,7 +63,7 @@ module SiSU_DbColumns
   class Columns < SiSU_DbText::Prepare
     def initialize(md=nil)
       @md=md
-      @db=SiSU_Env::Info_db.new #watch
+      @db=SiSU_Env::InfoDb.new #watch
       @lang ||=SiSU_i18n::Languages.new
       if defined? md.opt.mod \
       and md.opt.mod.inspect=~/import|update/ \
@@ -2084,7 +2084,7 @@ module SiSU_DbColumns
       self
     end
   end
-  class Column_size
+  class ColumnSize
     def document_clean # restriction not necessary
       60000
     end
diff --git a/lib/sisu/v3dv/db_create.rb b/lib/sisu/v3dv/db_create.rb
index fca9f557..47d22915 100644
--- a/lib/sisu/v3dv/db_create.rb
+++ b/lib/sisu/v3dv/db_create.rb
@@ -68,7 +68,7 @@ module SiSU_DbCreate
       @comment=(@sql_type=='pg') \
       ? (Comment.new(@conn,@sql_type))
       : nil
-      @@dl ||=SiSU_Env::Info_env.new.digest.length
+      @@dl ||=SiSU_Env::InfoEnv.new.digest.length
     end
     def available
       DBI.available_drivers.each do |driver|
@@ -79,15 +79,15 @@ module SiSU_DbCreate
       end
     end
     def create_db
-      @env=SiSU_Env::Info_env.new(@opt.fns)
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
       tell=(@sql_type=='sqlite') \
       ? SiSU_Screen::Ansi.new(@opt.cmd,'invert','Create Sqlite db tables in:',%{"#{@env.path.output}/sisu_sqlite.db"})
       : SiSU_Screen::Ansi.new(@opt.cmd,'invert','Create PG db tables in:',%{"#{Db[:name_prefix]}#{@env.path.stub_pwd}"})
       tell.colorize if @opt.cmd =~/vVM/
-      SiSU_Env::System_call.new.create_pg_db(@env.path.stub_pwd) if @sql_type=='pg' #watch use of path.stub_pwd instead of stub
+      SiSU_Env::SystemCall.new.create_pg_db(@env.path.stub_pwd) if @sql_type=='pg' #watch use of path.stub_pwd instead of stub
     end
     def output_dir?
-      dir=SiSU_Env::Info_env.new('')
+      dir=SiSU_Env::InfoEnv.new('')
       if @opt.cmd =~/d/
         dir.path.webserv_stub_ensure
       end
diff --git a/lib/sisu/v3dv/db_dbi.rb b/lib/sisu/v3dv/db_dbi.rb
index d2efa554..f15b2456 100644
--- a/lib/sisu/v3dv/db_dbi.rb
+++ b/lib/sisu/v3dv/db_dbi.rb
@@ -67,7 +67,7 @@ module  SiSU_DbDBI
   require_relative 'db_remove'                                              # db_remove.rb
   require_relative 'db_load_tuple'                                          # db_load_tuple.rb
   require_relative 'db_import'                                              # db_import.rb
-  class Column_size < SiSU_DbColumns::Column_size                             # db_columns.rb
+  class ColumnSize < SiSU_DbColumns::ColumnSize                             # db_columns.rb
   end
   class Test < SiSU_DbTests::Test                                             # db_tests.rb
   end
@@ -81,13 +81,13 @@ module  SiSU_DbDBI
   end
   class Remove <SiSU_DbRemove::Remove                                         # db_remove.rb
   end
-  class Load_documents <SiSU_DbTuple::Load_documents                          # db_load_tuple.rb
+  class LoadDocuments <SiSU_DbTuple::LoadDocuments                          # db_load_tuple.rb
   end
-  class Load_metadata <SiSU_DbTuple::Load_metadata                            # db_load_tuple.rb
+  class LoadMetadata <SiSU_DbTuple::LoadMetadata                            # db_load_tuple.rb
   end
-  class Load_urls <SiSU_DbTuple::Load_urls                                    # db_update urls
+  class LoadUrls <SiSU_DbTuple::LoadUrls                                    # db_update urls
   end
-  class Import <SiSU_DbImport::Import #<SiSU_DB::Column_size                  # db_import.rb
+  class Import <SiSU_DbImport::Import #<SiSU_DB::ColumnSize                  # db_import.rb
   end
 end
 __END__
diff --git a/lib/sisu/v3dv/db_drop.rb b/lib/sisu/v3dv/db_drop.rb
index 2c5ba195..97bf8665 100644
--- a/lib/sisu/v3dv/db_drop.rb
+++ b/lib/sisu/v3dv/db_drop.rb
@@ -90,7 +90,7 @@ module SiSU_DbDrop
             and File.exist?(@db_info.sqlite.db)
               @conn.close
               File.unlink(@db_info.sqlite.db)
-              db=SiSU_Env::Info_db.new
+              db=SiSU_Env::InfoDb.new
               conn=db.sqlite.conn_sqlite3
               sdb=SiSU_DbDBI::Create.new(@opt,conn,@db_info,@sql_type)
               sdb_index=SiSU_DbDBI::Index.new(@opt,conn,@db_info,@sql_type)
@@ -104,7 +104,7 @@ module SiSU_DbDrop
                 sdb.create_table.endnotes_plus
                 sdb.create_table.urls
                 sdb_index.create_indexes
-              rescue;  SiSU_Errors::Info_error.new($!,$@,'-D').error; @sdb.output_dir?
+              rescue;  SiSU_Errors::InfoError.new($!,$@,'-D').error; @sdb.output_dir?
               end
               exit
             else
diff --git a/lib/sisu/v3dv/db_import.rb b/lib/sisu/v3dv/db_import.rb
index 2659f4c1..adbe5af5 100644
--- a/lib/sisu/v3dv/db_import.rb
+++ b/lib/sisu/v3dv/db_import.rb
@@ -72,7 +72,7 @@ module SiSU_DbImport
     def initialize(opt,conn,file,sql_type='pg')
       @opt,@conn,@file,@sql_type=opt,conn,file,sql_type
       @cX=SiSU_Screen::Ansi.new(@opt.cmd).cX
-      @env=SiSU_Env::Info_env.new(@opt.fns)
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
       @dal="#{@env.processing_path.dal}"
       if @opt.fns.empty? or @opt.cmd.empty?; @fnb=''
       else
@@ -85,7 +85,7 @@ module SiSU_DbImport
       @col=Hash.new('')
       @col[:ocn]=''
       @counter={}
-      @db=SiSU_Env::Info_db.new
+      @db=SiSU_Env::InfoDb.new
       if @sql_type=='sqlite'
         @driver_sqlite3=(@conn.inspect.match(/^(.{10})/)[1]==@db.sqlite.conn_sqlite3.inspect.match(/^(.{10})/)[1]) \
         ? true
@@ -112,8 +112,8 @@ module SiSU_DbImport
       end
       @id_n =0 if @col[:lid].nil? or @col[:lid].to_s.empty?
       @col[:lv1]=@col[:lv2]=@col[:lv3]=@col[:lv4]=@col[:lv5]=@col[:lv6]=0
-      @db=SiSU_Env::Info_db.new
-      @@dl ||=SiSU_Env::Info_env.new.digest.length
+      @db=SiSU_Env::InfoDb.new
+      @@dl ||=SiSU_Env::InfoEnv.new.digest.length
     end
     def marshal_load
       require_relative 'dal'                            # dal.rb
@@ -167,7 +167,7 @@ module SiSU_DbImport
           puts "Error code: #{e.err}"
           puts "Error message: #{e.errstr}"
           puts "Error SQLSTATE: #{e.state}"
-          SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+          SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
           sqlfn="#{@env.processing_path.sql}/#{@md.fnb}.sql"
           sql=File.new(sqlfn,'w')
           t_d.each {|i| sql.puts i}
@@ -178,7 +178,7 @@ module SiSU_DbImport
             puts "#{__FILE__}:#{__LINE__}"
           end
         rescue
-          SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+          SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
           sqlfn="#{@env.processing_path.sql}/#{@md.fnb}.sql"
           sql=File.new(sqlfn,'w')
           t_d.each {|i| sql.puts i}
@@ -192,7 +192,7 @@ module SiSU_DbImport
         end
       else
         if file_exist
-          @db=SiSU_Env::Info_db.new
+          @db=SiSU_Env::InfoDb.new
           puts "\n#{@cX.grey}file #{@cX.off} #{@cX.blue}#{@opt.fns}#{@cX.off} in language code #{cX.blue}#{@opt.lng}#{cX.off} #{@cX.grey}already exists in database#{@cX.off} #{@cX.blue}#{@db.psql.db}#{@cX.off} #{@cX.brown}update instead?#{@cX.off}"
         end
       end
@@ -238,7 +238,7 @@ module SiSU_DbImport
       end
       ################ CLEAR ##############
       SiSU_DbDBI::Test.new(self,@opt).verify                          #% import title names, filenames (tuple)
-      t=SiSU_DbTuple::Load_metadata.new(@conn,@@id_t,@md,@file)
+      t=SiSU_DbTuple::LoadMetadata.new(@conn,@@id_t,@md,@file)
       tuple=t.tuple
       tuple
     end
@@ -278,7 +278,7 @@ module SiSU_DbImport
               end
               if @en_pls[0]; @en_a_plus,@en_z_plus=@en_pls[0].first,@en_pls[0].last
               end
-              t=SiSU_DbTuple::Load_documents.new(@conn,@col,@opt,@file)
+              t=SiSU_DbTuple::LoadDocuments.new(@conn,@col,@opt,@file)
               @tuple_array << t.tuple
               case @col[:lev]
               when /1/; @col[:lv1]+=1
@@ -298,7 +298,7 @@ module SiSU_DbImport
                 @@hname=@col[:seg].to_s
               else @@hname
               end
-              @env=SiSU_Env::Info_env.new(@md.fns)
+              @env=SiSU_Env::InfoEnv.new(@md.fns)
               @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
               txt=endnotes(txt).extract_any
               @col[:body]=SiSU_FormatShared::CSS_Format.new(@md,data).lev4_plus
@@ -309,7 +309,7 @@ module SiSU_DbImport
               @en_a,@en_z=@en[0].first,@en[0].last if @en[0]
               @en_a_asterisk,@en_z_asterisk=@en_ast[0].first,@en_ast[0].last if @en_ast[0]
               @en_a_plus,@en_z_plus=@en_pls[0].first,@en_pls[0].last if @en_pls[0]
-              t=SiSU_DbTuple::Load_documents.new(@conn,@col,@opt,@file)
+              t=SiSU_DbTuple::LoadDocuments.new(@conn,@col,@opt,@file)
               @tuple_array << t.tuple
               @col[:lev]=@col[:plaintext]=@col[:body]=''
             elsif data.is=='heading' and data.ln==5
@@ -325,7 +325,7 @@ module SiSU_DbImport
                 @@hname=@col[:seg].to_s
               else @@hname
               end
-              @env=SiSU_Env::Info_env.new(@md.fns)
+              @env=SiSU_Env::InfoEnv.new(@md.fns)
               @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
               txt=endnotes(txt).extract_any
               @col[:body]=SiSU_FormatShared::CSS_Format.new(@md,data).lev4_plus
@@ -336,7 +336,7 @@ module SiSU_DbImport
               @en_a,@en_z=@en[0].first,@en[0].last if @en[0]
               @en_a_asterisk,@en_z_asterisk=@en_ast[0].first,@en_ast[0].last if @en_ast[0]
               @en_a_plus,@en_z_plus=@en_pls[0].first,@en_pls[0].last if @en_pls[0]
-              t=SiSU_DbTuple::Load_documents.new(@conn,@col,@opt,@file)
+              t=SiSU_DbTuple::LoadDocuments.new(@conn,@col,@opt,@file)
               @tuple_array << t.tuple
               @col[:lev]=@col[:plaintext]=@col[:body]=''
             elsif data.is=='heading' and data.ln==6
@@ -352,7 +352,7 @@ module SiSU_DbImport
                 @@hname=@col[:seg].to_s
               else @@hname
               end
-              @env=SiSU_Env::Info_env.new(@md.fns)
+              @env=SiSU_Env::InfoEnv.new(@md.fns)
               @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
               txt=endnotes(txt).extract_any
               @col[:body]=SiSU_FormatShared::CSS_Format.new(@md,data).lev4_plus
@@ -363,7 +363,7 @@ module SiSU_DbImport
               @en_a,@en_z=@en[0].first,@en[0].last if @en[0]
               @en_a_asterisk,@en_z_asterisk=@en_ast[0].first,@en_ast[0].last if @en_ast[0]
               @en_a_plus,@en_z_plus=@en_pls[0].first,@en_pls[0].last if @en_pls[0]
-              t=SiSU_DbTuple::Load_documents.new(@conn,@col,@opt,@file)
+              t=SiSU_DbTuple::LoadDocuments.new(@conn,@col,@opt,@file)
               @tuple_array << t.tuple
               @col[:lev]=@col[:plaintext]=@col[:body]=''
             else                                                               #% regular text
@@ -375,11 +375,11 @@ module SiSU_DbImport
                 @@hname=@col[:seg].to_s
               else @@hname
               end
-              @env=SiSU_Env::Info_env.new(@md.fns)
+              @env=SiSU_Env::InfoEnv.new(@md.fns)
               @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
               txt=endnotes(txt).extract_any
               if @sql_type=~/pg/ \
-              and txt.size > (SiSU_DbColumns::Column_size.new.document_clean - 1)             #% examine pg build & remove limitation
+              and txt.size > (SiSU_DbColumns::ColumnSize.new.document_clean - 1)             #% examine pg build & remove limitation
                 puts "\n\nTOO LARGE (TXT - see error log)\n\n"
                 open("#{Dir.pwd}/pg_documents_error_log",'a') do |error|
                   error.puts("\n#{@opt.fns}\nTEXT BODY\n#{@col[:body].size} object #{@col[:ocn]} -> #{@col[:body].slice(0..500)}")
@@ -410,7 +410,7 @@ module SiSU_DbImport
               @col[:plaintext]=@col[:body].dup
               @col[:plaintext]=strip_markup(@col[:plaintext])
               @col[:plaintext]=clean_searchable_text(@col[:plaintext])
-              t=SiSU_DbTuple::Load_documents.new(@conn,@col,@opt,@file)
+              t=SiSU_DbTuple::LoadDocuments.new(@conn,@col,@opt,@file)
               @tuple_array << t.tuple
               @en,@en_ast,@en_pls=[],[],[]
               @col[:en_a]=@col[:en_z]=nil
@@ -427,7 +427,7 @@ module SiSU_DbImport
                   special_character_escape(txt)
                   body=SiSU_FormatShared::CSS_Format.new(@md,data).endnote(nr,txt)
                   strip_markup(txt)
-                  if txt.size > (SiSU_DbColumns::Column_size.new.endnote_clean - 1)
+                  if txt.size > (SiSU_DbColumns::ColumnSize.new.endnote_clean - 1)
                     puts "\n\nTOO LARGE (ENDNOTE - see error log)\n\n"
                     open("#{Dir.pwd}/pg_documents_error_log",'a') do |error|
                       error.puts("\n#{@opt.fns}\nENDNOTE\n#{txt.size} object #{@col[:ocn]},#{@col[:ocnd]},#{@col[:ocns]} -> #{txt.slice(0..500)}")
@@ -448,7 +448,7 @@ module SiSU_DbImport
                       id_t:    @@id_t,
                       hash:    digest_clean
                     }
-                    t=SiSU_DbTuple::Load_endnotes.new(@conn,en,@opt,@file)
+                    t=SiSU_DbTuple::LoadEndnotes.new(@conn,en,@opt,@file)
                     @tuple_array << t.tuple
                   end
                 end
@@ -466,7 +466,7 @@ module SiSU_DbImport
                   special_character_escape(txt)
                   body=SiSU_FormatShared::CSS_Format.new(@md,data).endnote(nr,txt)
                   strip_markup(txt)
-                  if txt.size > (SiSU_DbColumns::Column_size.new.endnote_clean - 1)
+                  if txt.size > (SiSU_DbColumns::ColumnSize.new.endnote_clean - 1)
                     puts "\n\nTOO LARGE (ENDNOTE - see error log)\n\n"
                     open("#{Dir.pwd}/pg_documents_error_log",'a') do |error|
                       error.puts("\n#{@opt.fns}\nENDNOTE\n#{txt.size} object #{@col[:ocn]},#{@col[:ocnd]},#{@col[:ocns]} -> #{txt.slice(0..500)}")
@@ -487,7 +487,7 @@ module SiSU_DbImport
                       id_t:    @@id_t,
                       hash:    digest_clean
                     }
-                    t=SiSU_DbTuple::Load_endnotes.new(@conn,en,@opt,@file)
+                    t=SiSU_DbTuple::LoadEndnotes.new(@conn,en,@opt,@file)
                     @tuple_array << t.tuple
                   end
                 end
@@ -505,7 +505,7 @@ module SiSU_DbImport
                   special_character_escape(txt)
                   body=SiSU_FormatShared::CSS_Format.new(@md,data).endnote(nr,txt)
                   strip_markup(txt)
-                  if txt.size > (SiSU_DbColumns::Column_size.new.endnote_clean - 1)
+                  if txt.size > (SiSU_DbColumns::ColumnSize.new.endnote_clean - 1)
                     puts "\n\nTOO LARGE (ENDNOTE - see error log)\n\n"
                     open("#{Dir.pwd}/pg_documents_error_log",'a') do |error|
                       error.puts("\n#{@opt.fns}\nENDNOTE\n#{txt.size} object #{@col[:ocn]},#{@col[:ocnd]},#{@col[:ocns]} -> #{txt.slice(0..500)}")
@@ -526,7 +526,7 @@ module SiSU_DbImport
                       id_t:    @@id_t,
                       hash:    digest_clean
                     }
-                    t=SiSU_DbTuple::Load_endnotes.new(@conn,en,@opt,@file)
+                    t=SiSU_DbTuple::LoadEndnotes.new(@conn,en,@opt,@file)
                     @tuple_array << t.tuple
                   end
                 end
@@ -535,7 +535,7 @@ module SiSU_DbImport
             end
           end
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
       @tuple_array
@@ -598,7 +598,7 @@ module SiSU_DbImport
     def db_import_urls(dbi_unit,content)                                           #% import documents OID - populate database
       begin
         @fnc=content
-        @env=SiSU_Env::Info_env.new(@opt.fns)
+        @env=SiSU_Env::InfoEnv.new(@opt.fns)
         base=@env.url.root
         out=@env.path.output
         f,u={},{}
@@ -654,9 +654,9 @@ module SiSU_DbImport
         if FileTest.file?("#{out}/#{@fnb}/#{@opt.fns}.tgz")==true
           f[:sisupod],u[:sisupod]='sisupod,', "'#{base}/#{@fnb}/#{@opt.fns}.tgz',"
         end
-        t=SiSU_DbTuple::Load_urls.new(@conn,f,u,@@id_t,@opt,@file)
+        t=SiSU_DbTuple::LoadUrls.new(@conn,f,u,@@id_t,@opt,@file)
         tuple=t.tuple
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
       tuple
diff --git a/lib/sisu/v3dv/db_load_tuple.rb b/lib/sisu/v3dv/db_load_tuple.rb
index 9650b50c..c3273ace 100644
--- a/lib/sisu/v3dv/db_load_tuple.rb
+++ b/lib/sisu/v3dv/db_load_tuple.rb
@@ -59,7 +59,7 @@
 =end
 module SiSU_DbTuple
   require_relative 'db_columns'                         # db_columns.rb
-  class Load_documents
+  class LoadDocuments
     require_relative 'param'                            # param.rb
       include SiSU_Param
     def initialize(conn,col,opt,file)
@@ -114,7 +114,7 @@ module SiSU_DbTuple
       sql_entry
     end
   end
-  class Load_metadata #< SiSU_DbColumns::Columns
+  class LoadMetadata #< SiSU_DbColumns::Columns
     def initialize(conn,id,md,file)
       @conn,@id,@md,@file=conn,id,md,file
       @tp=SiSU_DbColumns::Columns.new(md)
@@ -299,7 +299,7 @@ tid)
       sql_entry
     end
   end
-  class Load_urls
+  class LoadUrls
     def initialize(conn,f,u,id,opt,file)
       @conn,@f,@u,@id,@opt,@file=conn,f,u,id,opt,file
     end
@@ -314,7 +314,7 @@ tid)
       sql_entry
     end
   end
-  class Load_endnotes
+  class LoadEndnotes
     def initialize(conn,en,opt,file)
       @conn,@en,@opt,@file=conn,en,opt,file
     end
diff --git a/lib/sisu/v3dv/db_remove.rb b/lib/sisu/v3dv/db_remove.rb
index cf1fca6f..e34a0a93 100644
--- a/lib/sisu/v3dv/db_remove.rb
+++ b/lib/sisu/v3dv/db_remove.rb
@@ -63,7 +63,7 @@ module SiSU_DbRemove
       @opt,@conn,@file,@sql_type=opt,conn,file,sql_type
       @md=SiSU_Param::Parameters.new(@opt).get
       @fnb=@md.fnb
-      @db=SiSU_Env::Info_db.new
+      @db=SiSU_Env::InfoDb.new
     end
     def remove
       driver_sqlite3=if @sql_type=='sqlite'
diff --git a/lib/sisu/v3dv/db_select.rb b/lib/sisu/v3dv/db_select.rb
index 97fcb990..478a25fa 100644
--- a/lib/sisu/v3dv/db_select.rb
+++ b/lib/sisu/v3dv/db_select.rb
@@ -61,7 +61,7 @@ module SiSU_DbSelect
   class Case
     def initialize(opt,conn='',sql_type='pg')
       @opt,@conn,@sql_type=opt,conn,sql_type
-      @db=SiSU_Env::Info_db.new
+      @db=SiSU_Env::InfoDb.new
       @file=sql_maintenance_file
       @sdb=SiSU_DbDBI::Create.new(@opt,@conn,@file,@sql_type)      # db_dbi.rb
       @sdb_index=SiSU_DbDBI::Index.new(@opt,@conn,@file,@sql_type) # db_dbi.rb
@@ -90,9 +90,9 @@ module SiSU_DbSelect
     def sql_maintenance_file
       file=if @opt.inspect =~/M/
         x=if @opt.fns and not @opt.fns.empty?
-          @env=SiSU_Env::Info_env.new(@opt.fns) if @opt.fns
+          @env=SiSU_Env::InfoEnv.new(@opt.fns) if @opt.fns
           puts "\n#{@env.processing_path.sqlite}/#{@opt.fns}.sql" if @sql_type =~/sqlite/ and @opt.cmd =~/M/
-          @db=SiSU_Env::Info_db.new
+          @db=SiSU_Env::InfoDb.new
           @job="sqlite3 #{@db.sqlite.db} < #{@env.processing_path.sqlite}/#{@opt.fns}.sql"
           File.new("#{@env.processing_path.sqlite}/#{@opt.fns}.sql",'w+')
         elsif @opt.fns and @opt.fns.inspect =~/create/; nil #sort variations later
@@ -121,7 +121,7 @@ module SiSU_DbSelect
           @sdb.create_table.endnotes_plus
           @sdb.create_table.urls
           @sdb_index.create_indexes
-          rescue;  SiSU_Errors::Info_error.new($!,$@,'-D').error; @sdb.output_dir?
+          rescue;  SiSU_Errors::InfoError.new($!,$@,'-D').error; @sdb.output_dir?
           end
         when /^--createtables?$/
           @sdb.output_dir?
diff --git a/lib/sisu/v3dv/dbi.rb b/lib/sisu/v3dv/dbi.rb
index 4d8883fa..e0bd169e 100644
--- a/lib/sisu/v3dv/dbi.rb
+++ b/lib/sisu/v3dv/dbi.rb
@@ -70,7 +70,7 @@ module  SiSU_DBI
     def initialize(opt)
       SiSU_Env::Load.new('dbi',true).prog
       @opt=opt
-      @db=SiSU_Env::Info_db.new
+      @db=SiSU_Env::InfoDb.new
       if @opt.cmd =~/d/i \
       or  @opt.mod.inspect =~/--(pg(?:sql)?|(?:sq)?lite)/
         @sql_type=if @opt.cmd=~/D/ \
@@ -130,7 +130,7 @@ module  SiSU_DBI
       begin
         SiSU_DbDBI::Case.new(@opt,@conn,@sql_type).cases
       rescue
-        SiSU_Errors::Info_error.new($!,$@,@cf,@opt.fns).error
+        SiSU_Errors::InfoError.new($!,$@,@cf,@opt.fns).error
       ensure
       end
       begin
diff --git a/lib/sisu/v3dv/defaults.rb b/lib/sisu/v3dv/defaults.rb
index 7278c5f9..55aeef21 100644
--- a/lib/sisu/v3dv/defaults.rb
+++ b/lib/sisu/v3dv/defaults.rb
@@ -66,9 +66,9 @@ module SiSU_Viz
   class Skin
     def initialize
       @fonts='verdana, arial, georgia, tahoma, sans-serif, helvetica, times, roman' # 'verdana, arial, georgia, tahoma, sans-serif, helvetica, "times new roman", times, roman'
-      @dir=SiSU_Env::Info_env.new
-      @date=SiSU_Env::Info_date.new #{@date.year}
-      @v=SiSU_Env::Info_version.instance.get_version
+      @dir=SiSU_Env::InfoEnv.new
+      @date=SiSU_Env::InfoDate.new #{@date.year}
+      @v=SiSU_Env::InfoVersion.instance.get_version
     end
     #% glyph
     def glyph_bullet # &bullet;
@@ -957,7 +957,7 @@ module SiSU_Viz
     </a>}
     end
     def png_hp
-      dir=SiSU_Env::Info_env.new #(@fns)
+      dir=SiSU_Env::InfoEnv.new #(@fns)
       %{  <a href="#{url.site}">
       <img border="0" width="160" height="60" src="#{@dir.url.images_local}/#{icon_home_banner}" alt="#{txt_home}" />
     </a>}
@@ -1029,7 +1029,7 @@ module SiSU_Viz
       %{<img border="0" height="15" width="15" src="#{url_path_image_sys}/#{icon_external_toc}" alt="lateral hop" />}
     end
     def png_home
-      #dir=SiSU_Env::Info_env.new #(@fns)
+      #dir=SiSU_Env::InfoEnv.new #(@fns)
       %{<img border="0" src="#{url_path_image_base}/#{icon_home_button}" alt="#{txt_home} --&gt;" />}
       #%{<img border="0" src="#{dir.url.images_local}/#{icon_home_button}" alt="#{txt_home} --&gt;" />}
     end
@@ -1724,9 +1724,9 @@ WOK
   end
   class Home < Skin
     def initialize
-      @v=SiSU_Env::Info_version.instance.get_version
-      @dir=SiSU_Env::Info_env.new
-      @date=SiSU_Env::Info_date.new #{@date.year}
+      @v=SiSU_Env::InfoVersion.instance.get_version
+      @dir=SiSU_Env::InfoEnv.new
+      @date=SiSU_Env::InfoDate.new #{@date.year}
     end
     def redirect
       <<WOK
diff --git a/lib/sisu/v3dv/digests.rb b/lib/sisu/v3dv/digests.rb
index 1564884a..5f5d90b3 100644
--- a/lib/sisu/v3dv/digests.rb
+++ b/lib/sisu/v3dv/digests.rb
@@ -68,8 +68,8 @@ module SiSU_DigestView
       @fnb=@opt.fnb
       @@endnotes_para=[]
       @@dg=nil
-      @dg=@@dg ||=SiSU_Env::Info_env.new.digest.type
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @dg=@@dg ||=SiSU_Env::InfoEnv.new.digest.type
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       begin
@@ -84,8 +84,8 @@ module SiSU_DigestView
           SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"file://#{@md.file.output_path.hash_digest.dir}/#{@md.file.base_filename.hash_digest}").flow if @opt.cmd =~/[MV]/
         end
         SiSU_DigestView::Source::Scroll.new(@particulars).songsheet
-        SiSU_Env::Info_skin.new(@md).select
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        SiSU_Env::InfoSkin.new(@md).select
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -101,7 +101,7 @@ module SiSU_DigestView
         @@dg ||=@env.digest.type
         @@dl ||=@env.digest.length
         @dg,@dl=@@dg,@@dl
-        l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+        l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
         @language=l[:n]
         @tr=SiSU_Translate::Source.new(@md,@language)
         @sp=' '
@@ -143,7 +143,7 @@ module SiSU_DigestView
       end
       def message_digest
         data=@data
-        sys=SiSU_Env::System_call.new
+        sys=SiSU_Env::SystemCall.new
         l=Hash.new(0)
         @p=[]
         @g,@v,@r='','',''
@@ -298,7 +298,7 @@ module SiSU_DigestView
         data=@data
         endnotes=nil
         data.each do |t_o|
-          dgst=SiSU_TextRepresentation::Modified_text_plus_Hash_digest.new(@md,t_o).composite.dgst
+          dgst=SiSU_TextRepresentation::ModifiedTextPlusHashDigest.new(@md,t_o).composite.dgst
           if dgst
             if t_o.is=='heading'
               digests("#{@sp*0}#{dgst[:ocn]}#{@sp*(8-dgst[:ocn].to_s.length)}#{dgst[:dgst_stripped_txt]} #{dgst[:dgst_markedup_txt]} #{dgst[:is]} #{t_o.lv}")
diff --git a/lib/sisu/v3dv/embedded.rb b/lib/sisu/v3dv/embedded.rb
index f8cfc9a9..0c73e9e3 100644
--- a/lib/sisu/v3dv/embedded.rb
+++ b/lib/sisu/v3dv/embedded.rb
@@ -65,8 +65,8 @@ module SiSU_Embedded
     def initialize(opt)
       @opt=opt
       @md=SiSU_Param::Parameters.new(@opt).get
-      @env=SiSU_Env::Info_env.new(@md.fns)
-      @rhost=SiSU_Env::Info_remote.new(@opt).remote_host_base
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
+      @rhost=SiSU_Env::InfoRemote.new(@opt).remote_host_base
       @base_src_dir=@opt.f_pth[:pth].sub(/\/#{@opt.f_pth[:lng]}$/,'')
       @f=SiSU_Env::FileOp.new(@md)
     end
@@ -78,7 +78,7 @@ module SiSU_Embedded
       audio
       multimedia
       begin
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -95,9 +95,9 @@ module SiSU_Embedded
           FileUtils::mkdir_p(img_dir) unless FileTest.directory?(img_dir)
           src_ec=@f.place_file.images.rel + '/' + @md.ec[:image].join(" #{@f.output_path.images.rel}/")
           unless @opt.fns =~/\.-sst$/
-            SiSU_Env::System_call.new(src_ec,ldest,'q').rsync('--relative',@opt.base_path)
+            SiSU_Env::SystemCall.new(src_ec,ldest,'q').rsync('--relative',@opt.base_path)
             #if @md.opt.cmd.inspect =~/R/ #rsync to remote image directory
-            #  SiSU_Env::System_call.new(src_ec,remote_rel,'q').rsync('--relative')
+            #  SiSU_Env::SystemCall.new(src_ec,remote_rel,'q').rsync('--relative')
             #end
           end
         end
@@ -113,9 +113,9 @@ module SiSU_Embedded
         and FileTest.directory?(src)
           FileUtils::mkdir_p(ldest) unless FileTest.directory?(ldest)
           src_ec="#{src}/" + @md.ec[:audio].join(" #{src}/")
-          SiSU_Env::System_call.new(src_ec,"#{ldest}/.",'q').rsync
+          SiSU_Env::SystemCall.new(src_ec,"#{ldest}/.",'q').rsync
           if @md.opt.cmd.inspect =~/R/ #rsync to remote audio directory
-            SiSU_Env::System_call.new(src_ec,"#{rdest}/.",'q').rsync
+            SiSU_Env::SystemCall.new(src_ec,"#{rdest}/.",'q').rsync
           end
         end
       end
@@ -130,9 +130,9 @@ module SiSU_Embedded
         and FileTest.directory?(src)
           FileUtils::mkdir_p(ldest) unless FileTest.directory?(ldest)
           src_ec="#{src}/" + @md.ec[:multimedia].join(" #{src}/")
-          SiSU_Env::System_call.new(src_ec,"#{ldest}/.",'q').rsync
+          SiSU_Env::SystemCall.new(src_ec,"#{ldest}/.",'q').rsync
           if @md.opt.cmd.inspect =~/R/ #rsync to remote video directory
-            SiSU_Env::System_call.new(src_ec,"#{rdest}/.",'q').rsync
+            SiSU_Env::SystemCall.new(src_ec,"#{rdest}/.",'q').rsync
           end
         end
       end
diff --git a/lib/sisu/v3dv/epub.rb b/lib/sisu/v3dv/epub.rb
index 5afba6b0..250b428f 100644
--- a/lib/sisu/v3dv/epub.rb
+++ b/lib/sisu/v3dv/epub.rb
@@ -73,7 +73,7 @@ module SiSU_EPUB
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       songsheet
@@ -96,18 +96,18 @@ module SiSU_EPUB
         @env.processing_path.epub_bld #(@md)
         @env.processing_path.epub_cp_images(@md)
         dir_epub=@env.processing_path.epub
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
         data=nil
         SiSU_Env::FileOp.new(@md).mkdir.output.epub
-        @tuned_file_array=SiSU_EPUB::Source::XHtml_environment.new(@particulars).tuned_file_instructions
+        @tuned_file_array=SiSU_EPUB::Source::XHTML_Environment.new(@particulars).tuned_file_instructions
         data=@tuned_file_array
         scr_endnotes=SiSU_EPUB::Source::Endnotes.new(@md,data).scroll
         toc=SiSU_EPUB::Source::Toc.new(@md,data).songsheet
         data=@tuned_file_array
-        scr_toc=SiSU_EPUB::Source::Scroll_head_and_segtoc.new(@md,toc).in_common #watch
+        scr_toc=SiSU_EPUB::Source::ScrollHeadAndSegToc.new(@md,toc).in_common #watch
         SiSU_EPUB::Source::Seg.new(@md,data).songsheet
-        SiSU_EPUB::Source::Epub_output.new(@md).songsheet
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        SiSU_EPUB::Source::EPUB_Output.new(@md).songsheet
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         unless @opt.cmd =~/[MV]/ #check maintenance flag
           texfiles=Dir["#{@env.processing_path.tune}/#{@opt.fns}*"]
@@ -126,12 +126,12 @@ module SiSU_EPUB
       end
     end
     private
-    class XHtml_environment
+    class XHTML_Environment
       def initialize(particulars)
         @particulars=particulars
         @md,@env=particulars.md,particulars.env
-        @vz=SiSU_Env::Get_init.instance.skin
-        @env,@css,@symlnk=particulars.env,SiSU_Style::CSS.new,SiSU_Env::Create_system_link.new #home
+        @vz=SiSU_Env::GetInit.instance.skin
+        @env,@css,@symlnk=particulars.env,SiSU_Style::CSS.new,SiSU_Env::CreateSystemLink.new #home
       end
       def link_images
         @symlnk.images
@@ -157,7 +157,7 @@ module SiSU_EPUB
       end
       def scroll
         @scr_endnotes=[]
-        format_head_scroll=SiSU_EPUB_Format::Head_scroll.new(@md)
+        format_head_scroll=SiSU_EPUB_Format::HeadScroll.new(@md)
         @data.each do |dob|
           pg=dob.dup
           unless pg.is =~/^code/
@@ -174,7 +174,7 @@ module SiSU_EPUB
               end
               endnote_array.flatten.each do |note|
                 txt_obj={ txt: note }
-                format_scroll=SiSU_EPUB_Format::Format_scroll.new(@md,txt_obj)
+                format_scroll=SiSU_EPUB_Format::FormatScroll.new(@md,txt_obj)
                 @scr_endnotes << format_scroll.endnote_body
               end
             end
@@ -189,8 +189,8 @@ module SiSU_EPUB
       @@firstseg=nil
       def initialize(md=nil,data='')
         @md,@data=md,data
-        @vz=SiSU_Env::Get_init.instance.skin
-        @epub=SiSU_EPUB_Format::Head_information.new(@md)
+        @vz=SiSU_Env::GetInit.instance.skin
+        @epub=SiSU_EPUB_Format::HeadInformation.new(@md)
         @tell=SiSU_Screen::Ansi.new(@md.opt.cmd) if @md
       end
       def songsheet #extracts toc for scroll & seg
@@ -299,7 +299,7 @@ module SiSU_EPUB
                 @@toc[:seg] << toc[:seg]
                 @@toc[:scr] << toc[:seg]
                 @@toc[:seg_mini] << toc[:seg_mini] if toc[:seg_mini]
-              rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+              rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
               end
             end
           end
@@ -318,8 +318,8 @@ module SiSU_EPUB
         @@toc[:opf] << @epub.metadata_opf.guide_open << md_opf_a_guide << @epub.metadata_opf.guide_close
         @@toc[:opf] << @epub.metadata_opf.package_close
         @@toc[:opf]=@@toc[:opf].flatten
-        Epub_output.new(@md,@@toc[:opf]).epub_metadata_opf
-        Epub_output.new(@md,@@toc[:ncx]).epub_toc_ncx
+        EPUB_Output.new(@md,@@toc[:opf]).epub_metadata_opf
+        EPUB_Output.new(@md,@@toc[:ncx]).epub_toc_ncx
         @md.firstseg=@@firstseg
         @@toc
       end
@@ -333,7 +333,7 @@ module SiSU_EPUB
         linkname,link=dob.obj.strip,dob.ocn
         if link \
         and link !~/#/ #% keep eye on link
-          p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,link)
+          p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,link)
         end
         title=if dob.obj !~/Document Information/; linkname
         else
@@ -342,7 +342,7 @@ module SiSU_EPUB
         end
         toc={}
         txt_obj={ txt: title }
-        format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
         toc[:seg]=if dob.name =~/^meta/ \
         and dob.obj =~/Document Information/ #check
           format_toc.lev0
@@ -370,7 +370,7 @@ module SiSU_EPUB
           %{<b><a href="##{link}">#{linkname}</a></b>}
         end
         txt_obj={ txt: title }
-        format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
         toc[:scr]=if dob.name =~/^meta/ \
         and dob.obj =~/Document Information/
           format_toc.lev0
@@ -383,17 +383,17 @@ module SiSU_EPUB
         linkname,ocn=dob.obj.strip,dob.ocn
         if ocn \
         and ocn !~/#/
-          p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+          p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
         end
         txt_obj={ txt: linkname }
-        format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
         toc={}
         toc[:seg]=format_toc.lev2
         toc[:seg_mini]=format_toc.mini_lev2
         if p_num
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev2
         end
         toc
@@ -403,17 +403,17 @@ module SiSU_EPUB
         linkname,ocn=dob.obj.strip,dob.ocn
         if ocn \
         and ocn !~/#/
-          p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+          p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
         end
         txt_obj={ txt: linkname }
-        format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
         toc={}
         toc[:seg]=format_toc.lev3
         toc[:seg_mini]=format_toc.mini_lev3
         if p_num
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev3
         end
         toc
@@ -421,7 +421,7 @@ module SiSU_EPUB
       def level_4
         dob=@data
         linkname,ocn=dob.obj.strip,dob.ocn
-        p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn) if ocn
+        p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn) if ocn
         if dob.ln==4
           seg_link=%{  <a href="#{dob.name}#{Sfx[:epub_xhtml]}">
     #{dob.obj}
@@ -432,15 +432,15 @@ module SiSU_EPUB
             %{<a href="\\1#{Sfx[:epub_xhtml]}">} +
             %{\\1 \\2</a> })
         end
-        p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn) if ocn
+        p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn) if ocn
         txt_obj={ txt: seg_link }
-        format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
         toc={}
         toc[:seg]=format_toc.lev4
         toc[:seg_mini]=format_toc.mini_lev4
         title=%{#{p_num.goto}#{linkname}</a>} if p_num
         txt_obj={ txt: title }
-        format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
         toc[:scr]=format_toc.lev4
         toc
       end
@@ -450,17 +450,17 @@ module SiSU_EPUB
         toc={}
         if ocn \
         and ocn !~/#/
-          p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+          p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
           lnk_n_txt=%{  <a href="#{@@seg_url}#{Sfx[:epub_xhtml]}#o#{ocn}">
     #{linkname}
   </a>}
           txt_obj={ txt: lnk_n_txt }
-          format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
           toc[:seg]=format_toc.lev5
           toc[:seg_mini]=format_toc.mini_lev5
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev5
         end
         toc
@@ -471,17 +471,17 @@ module SiSU_EPUB
         toc={}
         if ocn \
         and ocn !~/#/
-          p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+          p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
           lnk_n_txt=%{  <a href="#{@@seg_url}#{Sfx[:epub_xhtml]}#o#{ocn}">
   #{linkname}
 </a>}
           txt_obj={ txt: lnk_n_txt }
-          format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
           toc[:seg]=format_toc.lev6
           toc[:seg_mini]=format_toc.mini_lev6
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_EPUB_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_EPUB_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev6
         end
         toc
@@ -510,33 +510,33 @@ module SiSU_EPUB
         end
       end
     end
-    class Scroll_head_and_segtoc < Toc
+    class ScrollHeadAndSegToc < Toc
       def initialize(md='',toc='',links_guide_toc='')
         @md,@toc,@links_guide_toc=md,toc,links_guide_toc
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
       end
       def in_common
         toc_shared=[]
         segtoc=[]
         SiSU_Screen::Ansi.new(@md.opt.cmd,'Scroll & Segtoc').txt_grey if @md.opt.cmd =~/[MVv]/
-        format_head_toc=SiSU_EPUB_Format::Head_toc.new(@md)
+        format_head_toc=SiSU_EPUB_Format::HeadToc.new(@md)
         dochead=format_head_toc.head
         dochead.gsub!(/toc\.(html)/,'doc.\1') #kludge
         toc_shared << dochead #<< ads.div.major
         segtoc << format_head_toc.head #<< ads.div.major
-        if SiSU_EPUB_Format::Head_toc.method_defined? :toc_head_escript
+        if SiSU_EPUB_Format::HeadToc.method_defined? :toc_head_escript
           toc_shared << format_head_toc.toc_head_escript
           segtoc << format_head_toc.toc_head_escript
         end
         if defined? @md.rights.all \
         and @md.rights.all
           rights=format_head_toc.rights.all
-          rights=SiSU_EPUB_Tune::Clean_xhtml.new(rights).clean
+          rights=SiSU_EPUB_Tune::CleanXHTML.new(rights).clean
         end
         if defined? @md.notes.prefix_b \
         and @md.notes.prefix_b
           prefix_b=format_head_toc.prefix_b
-          prefix_b=SiSU_EPUB_Tune::Clean_xhtml.new(prefix_b).clean
+          prefix_b=SiSU_EPUB_Tune::CleanXHTML.new(prefix_b).clean
         end
         seg_toc_band=format_head_toc.seg_head_navigation_band
         seg_toc_band_bottom=format_head_toc.seg_head_navigation_band_bottom
@@ -544,7 +544,7 @@ module SiSU_EPUB
         doc_title_endnote=@md.title.full.gsub(/(\*+)/,'<sup><a href="#endnotes">\1</a></sup>')
         tmp_head=doc_title_endnote + "\n"
         txt_obj={ txt: tmp_head }
-        format_txt_obj=SiSU_EPUB_Format::Format_text_object.new(@md,txt_obj)
+        format_txt_obj=SiSU_EPUB_Format::FormatTextObject.new(@md,txt_obj)
         toc_shared << format_txt_obj.center_bold
         segtoc << format_txt_obj.center_bold
         if defined? @md.creator.author \
@@ -552,7 +552,7 @@ module SiSU_EPUB
           creator_endnote=@md.creator.author.gsub(/(\*+)/,%{&nbsp;<sup><a href="#notes">\\1</a></sup>})
           tmp_head=creator_endnote + "\n"
           txt_obj={ txt: tmp_head }
-          format_txt_obj=SiSU_EPUB_Format::Format_text_object.new(@md,txt_obj)
+          format_txt_obj=SiSU_EPUB_Format::FormatTextObject.new(@md,txt_obj)
           toc_shared << format_txt_obj.center_bold
           segtoc << format_txt_obj.center_bold
         end
@@ -590,22 +590,22 @@ module SiSU_EPUB
         segtoc << seg_toc_band_bottom
         segtoc << format_head_toc.xhtml_close
         segtoc.flatten!.compact!
-        Epub_output.new(@md,segtoc).segtoc
+        EPUB_Output.new(@md,segtoc).segtoc
         segtoc=[]
         @toc[:scr],@toc[:seg]=[],[]
         toc_shared
       end
     end
-    class Table < SiSU_XHTML_Table::Table_xhtml
+    class Table < SiSU_XHTML_Table::TableXHTML
     end
     class Seg < SiSU_EPUB_Seg::Seg
     end
-    class Epub_output
+    class EPUB_Output
       def initialize(md,output='')
         @md,@output=md,output
         @epub_doc="#{@md.fnb}.epub"
-        @epub_header=SiSU_EPUB_Format::Head_information.new(@md)
-        @make=SiSU_Env::Create_file.new(@md.fns)
+        @epub_header=SiSU_EPUB_Format::HeadInformation.new(@md)
+        @make=SiSU_Env::CreateFile.new(@md.fns)
       end
       def songsheet
         mimetype
@@ -627,7 +627,7 @@ module SiSU_EPUB
       end
       def css
         out=@make.epub.xhtml_css
-        out << SiSU_EPUB_Format::Css.new.css_epub_xhtml
+        out << SiSU_EPUB_Format::CSS.new.css_epub_xhtml
         out.close
       end
       def epub_toc_ncx
@@ -639,7 +639,7 @@ module SiSU_EPUB
             end
           end
           out.close
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         end
       end
       def epub_metadata_opf
@@ -651,7 +651,7 @@ module SiSU_EPUB
             end
           end
           out.close
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         end
       end
       def images
@@ -697,7 +697,7 @@ module SiSU_EPUB
           end
           filename_html_segtoc.close
           filename_html_index.close
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         end
       end
     end
diff --git a/lib/sisu/v3dv/epub_concordance.rb b/lib/sisu/v3dv/epub_concordance.rb
index 66864775..9c90d482 100644
--- a/lib/sisu/v3dv/epub_concordance.rb
+++ b/lib/sisu/v3dv/epub_concordance.rb
@@ -69,7 +69,7 @@ module SiSU_EPUB_Concordance
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       begin
@@ -88,21 +88,21 @@ module SiSU_EPUB_Concordance
           SiSU_Screen::Ansi.new(@md.opt.cmd,"wc (word count) is off, concordance will be processed for all files including those over the max set size of: #{wordmax} words").warn unless @md.opt.cmd =~/q/
           SiSU_EPUB_Concordance::Source::Words.new(@particulars).songsheet
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
       end
     end
     private
-    class Doc_title
+    class DocTitle
       include SiSU_Viz
       #revisit, both requires (html & shared_xml) needed for stand alone operation (sisu -w [filename])
       require_relative 'epub'                           # epub.rb
       def initialize(particulars)
         @particulars,@md=particulars,particulars.md
-        @data=SiSU_EPUB::Source::XHtml_environment.new(particulars).tuned_file_instructions
-        @vz=SiSU_Env::Get_init.instance.skin
+        @data=SiSU_EPUB::Source::XHTML_Environment.new(particulars).tuned_file_instructions
+        @vz=SiSU_Env::GetInit.instance.skin
         txt_path=%{#{@md.dir_out}}
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
         @fnb=@md.fnb
         @lex_button=%{<a href="http://www.jus.uio.no/sisu/" target="_top"><img border="0" height="44" width="144" valign="center" src="../_sisu/image/sisu.png" alt="SiSU home --&gt;"></a>}
         @doc_details =<<WOK
@@ -110,8 +110,8 @@ module SiSU_EPUB_Concordance
 WOK
       end
       def create
-        @css=SiSU_Env::CSS_stylesheet.new(@particulars.md)
-        format_head_toc=SiSU_EPUB_Format::Head_toc.new(@md)
+        @css=SiSU_Env::CSS_Stylesheet.new(@particulars.md)
+        format_head_toc=SiSU_EPUB_Format::HeadToc.new(@md)
         dochead=format_head_toc.head
         <<WOK
 #{dochead}
@@ -154,7 +154,7 @@ WOK
       def initialize(particulars)
         @particulars=particulars
         begin
-          @vz=SiSU_Env::Get_init.instance.skin
+          @vz=SiSU_Env::GetInit.instance.skin
           @env,@md,@dal_array=particulars.env,particulars.md,particulars.dal_array
           @path="#{@env.processing_path.epub}"
           @freq=Hash.new(0)
@@ -170,14 +170,14 @@ WOK
           @rxp_excluded0=/^(?:#{Mx[:fa_bold_o]}|#{Mx[:fa_italics_o]})?(?:to\d+|\d+|&nbsp;|#{Mx[:br_endnotes]}|EOF|#{Mx[:br_eof]}|thumb_\S+|snap_\S+|_+|-+|[(]?(?:ii+|iv|vi+|ix|xi+|xiv|xv|xvi+|xix|xx)[).]?|\S+?_\S+|[\d_]+\w\S+|[\w\d]{1,2}|\d{1,3}\w?|[0-9a-f]{16,64}|\d{2,3}x\d{2,3}|\S{0,2}sha\d|\S{0,3}\d{4}w\d\d|\b\w\d+|\d_all\b|e\.?g\.?)(?:#{Mx[:fa_bold_c]}|#{Mx[:fa_italics_c]})?$/mi #this regex causes and cures a stack dump in ruby 1.9 !!!
           @rgx_splitlist=%r{[—.,;:-]+|#{Mx[:nbsp]}+}mi
           @rgx_scanlist=%r{#{Mx[:fa_italics_o]}[a-zA-Z0-9"\s]{2,12}#{Mx[:fa_italics_c]}|#{Mx[:fa_bold_o]}[a-zA-Z0-9"\s]{2,12}#{Mx[:fa_bold_c]}|#{Mx[:url_o]}https?://\S+?#{Mx[:url_c]}|file://\S+|<\S+?>|\w+|[a-zA-Z]+}mi
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         end
       end
       def songsheet
         begin
           @file_concordance=File.open("#{@path}/content/#{@md.fn[:epub_concord]}",'w')
           map_para
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
           @file_concordance.close
         end
@@ -275,7 +275,7 @@ WOK
         end
         scr='<font size="1" color="#777777" face=times new roman><img border="0" height="15" width="15" src="../_sisu/image/b_doc.png" alt="Full Text">&nbsp;scroll:&nbsp;</font><font size="1" color="#222222" face=times new roman>doc#&nbsp;</font> '
         seg=''
-        @file_concordance << SiSU_EPUB_Concordance::Source::Doc_title.new(@particulars).create
+        @file_concordance << SiSU_EPUB_Concordance::Source::DocTitle.new(@particulars).create
         alph=%W[A B C D E F G H I J K L M N O P Q R S T U V W X Y Z]
         @file_concordance << '<p>'
         alph.each {|x| @file_concordance << %{<a href="##{x}">#{x}</a>,&nbsp;}}
diff --git a/lib/sisu/v3dv/epub_format.rb b/lib/sisu/v3dv/epub_format.rb
index 30b6e0bc..46c9d4be 100644
--- a/lib/sisu/v3dv/epub_format.rb
+++ b/lib/sisu/v3dv/epub_format.rb
@@ -58,11 +58,11 @@
 =end
 module SiSU_EPUB_Format
   include SiSU_Viz
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(md,ocn)
       @md,@ocn=md,ocn.to_s
       @ocn ||=''
-      vz=SiSU_Env::Get_init.instance.skin
+      vz=SiSU_Env::GetInit.instance.skin
       @skin_no_ocn=if defined? vz.ocn_display_off \
       and vz.ocn_display_off==true
         true
@@ -95,7 +95,7 @@ module SiSU_EPUB_Format
       %{<a href="##{@ocn}">}
     end
   end
-  class Css
+  class CSS
     def css_epub_xhtml
 <<WOK
 /* SiSU epub css default stylesheet */
@@ -1252,14 +1252,14 @@ module SiSU_EPUB_Format
 WOK
     end
   end
-  class Head_information
+  class HeadInformation
     include SiSU_Viz
     attr_reader :md,:rdf,:vz
     def initialize(md)
       @md=md
       # DublinCore 1 - title
-      @vz=SiSU_Env::Get_init.instance.skin
-      @css=SiSU_Env::CSS_stylesheet.new(md)
+      @vz=SiSU_Env::GetInit.instance.skin
+      @css=SiSU_Env::CSS_Stylesheet.new(md)
       @seg_name_xhtml=(SiSU_EPUB::Source::Seg.new.seg_name_xhtml || [])
       @seg_name_xhtml_tracker=(SiSU_EPUB::Source::Seg.new.seg_name_xhtml_tracker || [])
       @index='index'
@@ -1718,11 +1718,11 @@ WOK
 </html>}
     end
   end
-  class Widget < Head_information
+  class Widget < HeadInformation
     def initialize(md)
       super(md)
       @md=md
-      @cf_defaults=SiSU_Env::Info_processing_flag.new
+      @cf_defaults=SiSU_Env::InfoProcessingFlag.new
     end
     def home
       %{<td align="center" bgcolor=#{@vz.color_band2}>
@@ -1732,7 +1732,7 @@ WOK
 }
     end
     def search
-      env=SiSU_Env::Info_env.new(@md.fns,@md)
+      env=SiSU_Env::InfoEnv.new(@md.fns,@md)
       env.widget.search_form('sisusearch',nil,nil,true)
     end
     def manifest
@@ -1745,7 +1745,7 @@ WOK
   end
   class XML
   end
-  class Head_toc < Head_information
+  class HeadToc < HeadInformation
     def initialize(md)
       super(md)
       @md=md
@@ -1884,7 +1884,7 @@ WOK
       metadata
     end
   end
-  class Head_seg < Head_information
+  class HeadSeg < HeadInformation
     def initialize(md)
       super(md)
     end
@@ -2033,7 +2033,7 @@ WOK
   <font size="2">}
     end
     def heading_advert_local_1
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <p class="center">
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -2044,7 +2044,7 @@ WOK
 </p>}
     end
     def heading_advert_local_2
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <p class="center">
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -2055,7 +2055,7 @@ WOK
 </p>}
     end
     def heading_advert_external
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <p class="center">
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -2118,7 +2118,7 @@ WOK
     def title_banner(title,subtitle,creator)
     end
   end
-  class Head_scroll < Head_toc
+  class HeadScroll < HeadToc
     def initialize(md)
       super(md)
     end
@@ -2135,8 +2135,8 @@ WOK
 #{@vz.table_close}}
     end
   end
-  class Format_text_object
-    @vz=SiSU_Env::Get_init.instance.skin
+  class FormatTextObject
+    @vz=SiSU_Env::GetInit.instance.skin
     attr_accessor :md,:t_o,:txt,:ocn,:format,:table,:link,:linkname,:paranum,:p_num,:headname,:banner,:url
     def initialize(md,t_o)
       @md,@t_o=md,t_o
@@ -2179,8 +2179,8 @@ WOK
       if @txt and not @txt.empty?
         @txt.gsub!(/#{Mx[:mk_o]}[-~]##{Mx[:mk_c]}/,'')
       end
-      @p_num=Paragraph_number.new(@md,@ocn)
-      @vz=SiSU_Env::Get_init.instance.skin
+      @p_num=ParagraphNumber.new(@md,@ocn)
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def nametags_seg(dob) #FIX
       tags=''
@@ -2257,7 +2257,7 @@ WOK
     end
     def table
       @txt=if @t_o.obj !~/^<table\s/
-        table=SiSU_XHTML_Shared::Table_xhtml.new(@t_o) #move, make happen earlier
+        table=SiSU_XHTML_Shared::TableXHTML.new(@t_o) #move, make happen earlier
         @txt=table.table.obj
       else @txt
       end
@@ -2379,13 +2379,13 @@ WOK
       %{<p class="centerbold">#{@txt}</p>\n}
     end
   end
-  class Format_scroll < Format_text_object
+  class FormatScroll < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
   end
-  class Format_seg < Format_text_object
+  class FormatSeg < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
     end
@@ -2523,7 +2523,7 @@ WOK
       %{<p class="centerbold">#{@txt}</p>}
     end
   end
-  class Format_toc < Format_text_object
+  class FormatToc < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
     end
diff --git a/lib/sisu/v3dv/epub_segments.rb b/lib/sisu/v3dv/epub_segments.rb
index 50a1091c..0280f951 100644
--- a/lib/sisu/v3dv/epub_segments.rb
+++ b/lib/sisu/v3dv/epub_segments.rb
@@ -60,7 +60,7 @@ module SiSU_EPUB_Seg
   require_relative 'shared_xhtml'                       # shared_xhtml.rb
   require_relative 'epub'                               # epub.rb
   require_relative 'shared_metadata'                    # shared_metadata.rb
-  class Seg_output
+  class SegOutput
     def initialize(md,outputfile,seg,minitoc,type='')
       @md,@output_epub_cont_seg,@seg,@minitoc,@type=md,outputfile,seg,minitoc,type
     end
@@ -70,31 +70,31 @@ module SiSU_EPUB_Seg
         filename_seg << @seg[:title] << @seg[:nav]
         if @type=='endnotes'
           @seg[:headings]=[]
-          format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+          format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
           @seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author)
           txt_obj={ txt: 'Endnotes', ocn_display: ''}
-          format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+          format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
           @seg[:headings] << format_seg.title_heading1
           filename_seg << @seg[:heading_endnotes] << @seg[:headings] << %{\n<div class="content">\n} << @seg[:endnote_all] << '</div>'
         elsif @type=='idx'
           @seg[:headings]=[]
-          format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+          format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
           @seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author)
           txt_obj={ txt: 'Index', ocn_display: ''}
-          format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+          format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
           @seg[:headings] << format_seg.title_heading1
           filename_seg << @seg[:heading_idx] << @seg[:headings] << %{\n<div class="content">\n} << @seg[:idx] << '</div>'
         elsif @type=='metadata'
           metadata=Metadata::Summary.new(@md).xhtml_display.metadata
           @seg[:headings]=[]
-          format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+          format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
           @seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author)
           txt_obj={ txt: 'Metadata', ocn_display: ''}
-          format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+          format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
           @seg[:headings] << format_seg.title_heading1
           filename_seg << @seg[:heading_idx] << @seg[:headings] << %{\n<div class="content">\n} << metadata << '</div>'
         elsif @type=='sisu_manifest'
-          env=SiSU_Env::Info_env.new(@md.fns)
+          env=SiSU_Env::InfoEnv.new(@md.fns)
           path_and_name,url_and_name="#{env.path.output}/#{@md.fnb}/sisu_manifest.html","#{env.url.root}/#{@md.fnb}/sisu_manifest.html"
           manifest=if FileTest.file?("#{path_and_name}")==true
             <<WOK
@@ -104,10 +104,10 @@ WOK
           else ''
           end
           @seg[:headings]=[]
-          format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+          format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
           @seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author)
           txt_obj={ txt: 'Manifest', ocn_display: ''}
-          format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+          format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
           @seg[:headings] << format_seg.title_heading1
           filename_seg << @seg[:heading_idx] << @seg[:headings] << %{\n<div class="content">\n} << manifest << '</div>'
         else
@@ -140,7 +140,7 @@ WOK
     attr_reader :seg_name_xhtml,:seg_name_xhtml_tracker
     def initialize(md='',data='')
       @md,@data=md,data
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
       @seg_name_xhtml=@@seg_name_xhtml || nil
       @seg_name_xhtml_tracker=@@tracker || nil
     end
@@ -151,7 +151,7 @@ WOK
         data=articles(data)
         Seg.new.cleanup # (((( added ))))
         #### (((( END )))) ####
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
         @@seg_name=[]
       end
@@ -163,7 +163,7 @@ WOK
       printed_endnote_seg='n'
       idx_xhtml=nil
       if @md.book_idx
-        idx_xhtml=SiSU_Particulars::Combined_singleton.instance.get_idx_xhtml(@md).xhtml_idx
+        idx_xhtml=SiSU_Particulars::CombinedSingleton.instance.get_idx_xhtml(@md).xhtml_idx
         idx_xhtml.each {|x| @@seg[:idx] << x }
         @@seg[:heading_idx]=''
       end
@@ -179,7 +179,7 @@ WOK
       @@seg_total=@@seg_name.length
       testforartnum=@@seg_name_xhtml
       SiSU_Screen::Ansi.new(@md.opt.cmd,@@seg_name.length) if @md.opt.cmd =~/[MVv]/
-      map_nametags=SiSU_Particulars::Combined_singleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
+      map_nametags=SiSU_Particulars::CombinedSingleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
       data.each do |dob|
         #if defined? dob.obj \
         #and dob.obj =~/href="#{Xx[:segment]}#+\S+?"/
@@ -242,15 +242,15 @@ WOK
                 output_epub_cont_seg=File.new(segfilename,'w') if @@seg_name_xhtml[tracking-1]
                 if dob.is=='heading' \
                 or @@seg_name_xhtml[tracking-1] !~/endnotes|book_index|metadata/
-                  Seg_output.new(@md,output_epub_cont_seg,@@seg,@minitoc).output
+                  SegOutput.new(@md,output_epub_cont_seg,@@seg,@minitoc).output
                 elsif dob.is=='heading_insert'
                   if @@seg_name_xhtml[tracking-1]=='endnotes'
-                    Seg_output.new(@md,output_epub_cont_seg,@@seg,@minitoc,'endnotes').output
+                    SegOutput.new(@md,output_epub_cont_seg,@@seg,@minitoc,'endnotes').output
                   elsif @@seg_name_xhtml[tracking-1]=='book_index'
-                    Seg_output.new(@md,output_epub_cont_seg,@@seg,@minitoc,'idx').output
+                    SegOutput.new(@md,output_epub_cont_seg,@@seg,@minitoc,'idx').output
                     @@seg[:idx]=[]
                   elsif @@seg_name_xhtml[tracking-1]=='metadata' # navigation bug FIX
-                    Seg_output.new(@md,output_epub_cont_seg,@@seg,@minitoc,'metadata').output
+                    SegOutput.new(@md,output_epub_cont_seg,@@seg,@minitoc,'metadata').output
                   else puts "#{__FILE__}::#{__LINE__}"
                   end
                 else puts "#{__FILE__}::#{__LINE__}"
@@ -261,7 +261,7 @@ WOK
                 if @@seg_name_xhtml[tracking]=='sisu_manifest' # this is for manifest, includes navigation bug
                   segfilename="#{dir_epub_cont}/#{@@seg_name_xhtml[tracking]}#{Sfx[:epub_xhtml]}"
                   output_epub_cont_seg=File.new(segfilename,'w')
-                  Seg_output.new(@md,output_epub_cont_seg,@@seg,@minitoc,'sisu_manifest').output
+                  SegOutput.new(@md,output_epub_cont_seg,@@seg,@minitoc,'sisu_manifest').output
                   Seg.new.reinitialise #BUG navigation bug with items following metadata, and occurring before manifest, this becomes a bug ... work area for book index, FIX
                 end
                #@output_epub_cont_seg.close                                         #%(((( EOF )))) -->
@@ -297,7 +297,7 @@ WOK
       data
     end
     def heading_art(dob)
-      format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
       if dob.is=='heading' \
       and dob.ln =~/^[1-6]/
         @@seg[:dot_nav]= (@@tracker < @@seg_total-1) \
@@ -308,7 +308,7 @@ WOK
     end
     def head(dob)
       clean=/<!.*?!>|<:.*?>$/
-      format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
       if @@tracker < @@seg_total-1
         @@segtocband=(@@tracker==0) \
         ? format_head_seg.toc_next2
@@ -325,9 +325,9 @@ WOK
         ocn=if @@heading1[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: @@heading1, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading1.gsub(clean,'')
         @@heading1.gsub!(/&nbsp;<a name="-[\d*+]+" href="#_[\d*+]+">&nbsp;<sup>[\d*+]+<\/sup>&nbsp;<\/a>/,'')
       end
@@ -336,9 +336,9 @@ WOK
         ocn=if heading2[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: heading2, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading2.gsub(clean,'')
         @@heading2.gsub!(/&nbsp;<a name="-[\d*+]+" href="#_[\d*+]+">&nbsp;<sup>[\d*+]+<\/sup>&nbsp;<\/a>/,'')
       end
@@ -347,9 +347,9 @@ WOK
         ocn=if heading3[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: heading3, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading3.gsub(clean,'')
         @@heading3.gsub!(/&nbsp;<a name="-[\d*+]+" href="#_[\d*+]+">&nbsp;<sup>[\d*+]+<\/sup>&nbsp;<\/a>/,'')
       end
@@ -358,27 +358,27 @@ WOK
         ocn=if heading4[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: heading4, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading4.gsub(clean,'')
       end
       @@tracker=@@tracker+1
     end
     def markup(dob)
       @debug=[]
-      format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
       if dob.is =~/(?:heading|para)/ #extend as necessary FIX
-        @p_num=SiSU_EPUB_Format::Paragraph_number.new(@md,dob.ocn)
+        @p_num=SiSU_EPUB_Format::ParagraphNumber.new(@md,dob.ocn)
       end
-      sto=SiSU_EPUB_Format::Format_text_object.new(@md,dob)
+      sto=SiSU_EPUB_Format::FormatTextObject.new(@md,dob)
       dob_xhtml=if dob.is=='heading' \
       or dob.is=='heading_insert' \
       or dob.is=='para'
         dob_xhtml=if dob.is=='heading' \
         or dob.is=='heading_insert'
           if dob.ln==4
-            sto.seg_heading4 # work on see Split_text_object
+            sto.seg_heading4 # work on see SplitTextObject
           elsif dob.ln==5
             sto.seg_heading5
           elsif dob.ln==6; sto.seg_heading6
@@ -417,13 +417,13 @@ WOK
       end
       if dob.is =~/heading|para/ \
       and (not dob.ocn or dob.ocn.to_s.empty?)
-        format_seg=SiSU_EPUB_Format::Format_seg.new(@md,dob)
+        format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,dob)
       end
       if (dob.is=='heading' \
       || dob.is=='heading_insert' \
       || dob.is=='para') \
       and dob.note_ #dob.obj =~/<a href="#note_ref\d+">&nbsp;<sup id=/                #endnote- note-
-        format_seg=SiSU_EPUB_Format::Format_seg.new(@md,dob)
+        format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,dob)
         dob.obj=format_seg.no_paranum
       end
       if (dob.is=='heading' \
@@ -437,7 +437,7 @@ WOK
       end
     end
     def tail
-      format_head_seg=SiSU_EPUB_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_EPUB_Format::HeadSeg.new(@md)
       if @md.flag_auto_endnotes \
       and @@seg_endnotes[@@get_hash_fn]
         @@seg[:tail] <<  %{\n<div class="content">\n<div class="endnote">\n}
@@ -494,10 +494,10 @@ WOK
         and dob.ln.to_s =~/^[56]/
           case dob.ln
           when 5
-            format_seg=SiSU_EPUB_Format::Format_seg.new(@md,dob)
+            format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,dob)
             subtoc=format_seg.subtoc_lev5 #keep and make available, this is the subtoc
           when 6
-            format_seg=SiSU_EPUB_Format::Format_seg.new(@md,dob)
+            format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,dob)
             subtoc=format_seg.subtoc_lev6 #keep and make available, this is the subtoc
           end
           @@seg_subtoc_array << subtoc
@@ -524,7 +524,7 @@ WOK
               try=e_n.split(/<br \/>/)
               try.each do |e|
                 txt_obj={ txt: e }
-                format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+                format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
                 note_match=if e =~/#{Mx[:pa_o]}i[1-9]#{Mx[:pa_c]}/
                   format_seg.endnote_body_indent
                 else format_seg.endnote_body
@@ -537,7 +537,7 @@ WOK
               endnote_part_a=note_match_seg[m,1]
               endnote_part_b=note_match_seg[m,2]
               txt_obj={ endnote_part_a: endnote_part_a, endnote_part_b: endnote_part_b }
-              format_seg=SiSU_EPUB_Format::Format_seg.new(@md,txt_obj)
+              format_seg=SiSU_EPUB_Format::FormatSeg.new(@md,txt_obj)
               note_match_all_seg=format_seg.endnote_seg_body(@@fn) #BUG WATCH 200408
               @@seg[:endnote_all] << note_match_all_seg
             end
diff --git a/lib/sisu/v3dv/epub_tune.rb b/lib/sisu/v3dv/epub_tune.rb
index c8cb2681..2f150006 100644
--- a/lib/sisu/v3dv/epub_tune.rb
+++ b/lib/sisu/v3dv/epub_tune.rb
@@ -91,7 +91,7 @@ module SiSU_EPUB_Tune
       File.open(@file.marshal.html_tune,'w') {|f| Marshal.dump(@data.to_a,f)}
     end
   end
-  class Clean_xhtml
+  class CleanXHTML
     def initialize(html='')
       @html=html
     end
@@ -198,10 +198,10 @@ module SiSU_EPUB_Tune
   class Tune
     def initialize(data,md)
       @data,@md=data,md
-      @vz=SiSU_Env::Get_init.instance.skin
-      @env=SiSU_Env::Info_env.new(@md.fns)
-      @sys=SiSU_Env::System_call.new
-      @env=SiSU_Env::Info_env.new(@md.fns)
+      @vz=SiSU_Env::GetInit.instance.skin
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
+      @sys=SiSU_Env::SystemCall.new
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
       @brace_url=SiSU_Viz::Skin.new.url_decoration
     end
     def songsheet
@@ -217,7 +217,7 @@ module SiSU_EPUB_Tune
           Output.new(data,@md).marshal
         end
         tuned=Tune.new(@data,@md).output
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
       end
     end
@@ -248,13 +248,13 @@ module SiSU_EPUB_Tune
         dob.obj.gsub!(/^#{Mx[:gl_bullet]}/m,'●&nbsp;&nbsp;')
         dob.obj.gsub!(/#{Mx[:nbsp]}/,'&nbsp;')
         dob.obj.gsub!(/<(p|br)>/,'<\1 />')
-        dob=SiSU_EPUB_Tune::Clean_xhtml.new(dob).clean
+        dob=SiSU_EPUB_Tune::CleanXHTML.new(dob).clean
         @tuned_file << dob
       end
     end
     def urls(data)
       @words=[]
-      map_nametags=SiSU_Particulars::Combined_singleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
+      map_nametags=SiSU_Particulars::CombinedSingleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
       data.each do |word|
         @words << if word=~/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}(?:#{Mx[:url_o]}\S+?#{Mx[:url_c]}|#{Mx[:rel_o]}\S+?#{Mx[:rel_c]}|image)/
           http_=true
diff --git a/lib/sisu/v3dv/errors.rb b/lib/sisu/v3dv/errors.rb
index 70ab4666..25ef688c 100644
--- a/lib/sisu/v3dv/errors.rb
+++ b/lib/sisu/v3dv/errors.rb
@@ -59,7 +59,7 @@
 module SiSU_Errors
   require_relative 'sysenv'                             # sysenv.rb
     include SiSU_Env; include SiSU_Screen
-  class Info_error <Create_file
+  class InfoError <CreateFile
     def initialize(error,errorlist,cmd,fns='')
       @fns,@cmd,@error,@errorlist=fns,cmd,error,errorlist
       @cmd=if cmd and cmd =~/c/; 'Vc'
@@ -67,7 +67,7 @@ module SiSU_Errors
       end
     end
     def error                                                                    #creates file errorlog.sisu in pwd of last error reported
-      file=if @fns; SiSU_Env::Create_file.new(@fns).file_error
+      file=if @fns; SiSU_Env::CreateFile.new(@fns).file_error
       else          File.new('/tmp/errorlog.sisu','w+')
       end
       file << @fns << "\n" << @error << "\n" << @errorlist
diff --git a/lib/sisu/v3dv/git.rb b/lib/sisu/v3dv/git.rb
index 63fb132f..82700d9c 100644
--- a/lib/sisu/v3dv/git.rb
+++ b/lib/sisu/v3dv/git.rb
@@ -63,10 +63,10 @@ module SiSU_Git
   class Source
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
       @md=SiSU_Param::Parameters.new(@opt).get
       @file=SiSU_Env::FileOp.new(@md)
-      l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+      l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
       unless @opt.lng==l[:c] # @md.i18n[0]==l[:c]
         p "using: #{@opt.lng} (@make: :language:); filename #{@md.fns} filename language: #{l[:c]}, mismatch"
       end
@@ -197,7 +197,7 @@ module SiSU_Git
         end
       end
       def locate_skin
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
       end
       def read_composite
         #print __FILE__ + ':'
diff --git a/lib/sisu/v3dv/harvest.rb b/lib/sisu/v3dv/harvest.rb
index 6ff179e6..6bd87777 100644
--- a/lib/sisu/v3dv/harvest.rb
+++ b/lib/sisu/v3dv/harvest.rb
@@ -68,7 +68,7 @@ module SiSU_Harvest
       include SiSU_Env
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def read
       harvest_pth="#{@env.path.webserv}/#{@opt.base_stub}"
@@ -84,7 +84,7 @@ WOK
     def css(opt)
       require_relative 'css'                                # css.rb
       css=SiSU_Style::CSS.new
-      fn_css=SiSU_Env::CSS_default.new
+      fn_css=SiSU_Env::CSS_Default.new
       style=File.new("#{@env.path.pwd}/#{fn_css.harvest}",'w')
       style << css.harvest
       style.close
diff --git a/lib/sisu/v3dv/harvest_authors.rb b/lib/sisu/v3dv/harvest_authors.rb
index 8b820c9b..3d3c2378 100644
--- a/lib/sisu/v3dv/harvest_authors.rb
+++ b/lib/sisu/v3dv/harvest_authors.rb
@@ -89,7 +89,7 @@ module SiSU_Harvest_Authors
         end
       end
       the_idx=SiSU_Harvest_Authors::Index.new(idx_array,@@the_idx_authors).construct_book_author_index
-      SiSU_Harvest_Authors::Output_index.new(@opt,the_idx).html_print.html_songsheet
+      SiSU_Harvest_Authors::OutputIndex.new(@opt,the_idx).html_print.html_songsheet
     end
   end
   class Harvest
@@ -168,15 +168,15 @@ module SiSU_Harvest_Authors
       @the_idx=@@the_idx_authors
     end
   end
-  class Output_index
+  class OutputIndex
     require_relative 'i18n'                               # i18n.rb
     def initialize(opt,the_idx)
       @opt,@the_idx=opt,the_idx
-      @env=SiSU_Env::Info_env.new
-      @rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
+      @env=SiSU_Env::InfoEnv.new
+      @rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
       @alph=%W[9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z]
       @letter=@alph.shift
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def html_file_open
       @the_idx.keys.each do |lng|
@@ -241,7 +241,7 @@ module SiSU_Harvest_Authors
           l=ln[lng][:t]
           harvest_languages += %{<a href="#{file}">#{l}</a>&nbsp;&nbsp;&nbsp;}
         end
-        sv=SiSU_Env::Info_version.instance.get_version
+        sv=SiSU_Env::InfoVersion.instance.get_version
         <<WOK
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
diff --git a/lib/sisu/v3dv/harvest_topics.rb b/lib/sisu/v3dv/harvest_topics.rb
index a9940e50..6bdc7e12 100644
--- a/lib/sisu/v3dv/harvest_topics.rb
+++ b/lib/sisu/v3dv/harvest_topics.rb
@@ -91,7 +91,7 @@ module SiSU_Harvest_Topics
         end
       end
       the_idx=SiSU_Harvest_Topics::Index.new(@opt,@env,idx_array,@@the_idx_topics).construct_book_topic_index
-      SiSU_Harvest_Topics::Output_index.new(@opt,the_idx).html_print.html_songsheet
+      SiSU_Harvest_Topics::OutputIndex.new(@opt,the_idx).html_print.html_songsheet
     end
   end
   class Harvest
@@ -259,15 +259,15 @@ module SiSU_Harvest_Topics
       @the_idx
     end
   end
-  class Output_index
+  class OutputIndex
     require_relative 'i18n'                               # i18n.rb
     def initialize(opt,the_idx)
       @opt,@the_idx=opt,the_idx
-      @env=SiSU_Env::Info_env.new
-      @rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
+      @env=SiSU_Env::InfoEnv.new
+      @rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
       @alph=%W[9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z]
       @letter=@alph.shift
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def html_file_open
       @the_idx.keys.each do |lng|
@@ -335,7 +335,7 @@ module SiSU_Harvest_Topics
           l=ln[lng][:t]
           harvest_languages += %{<a href="#{file}">#{l}</a>&nbsp;&nbsp;&nbsp;}
         end
-        sv=SiSU_Env::Info_version.instance.get_version
+        sv=SiSU_Env::InfoVersion.instance.get_version
         <<WOK
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
diff --git a/lib/sisu/v3dv/help.rb b/lib/sisu/v3dv/help.rb
index 9dc26aec..35a96170 100644
--- a/lib/sisu/v3dv/help.rb
+++ b/lib/sisu/v3dv/help.rb
@@ -68,8 +68,8 @@ module SiSU_Help
       else                    @cX=SiSU_Screen::Ansi.new('yes').cX
       end
       fns='help_example_dummy_file_name.sst'
-      @env=SiSU_Env::Info_env.new(fns)
-      @db=SiSU_Env::Info_db.new
+      @env=SiSU_Env::InfoEnv.new(fns)
+      @db=SiSU_Env::InfoDb.new
       m=/.+\/(?:src\/)?(\S+)/im # m=/.+?\/(?:src\/)?([^\/]+)$/im # m=/.+\/(\S+)/m
       @output_stub=Dir.pwd[m,1]
     end
@@ -337,7 +337,7 @@ WOK
 WOK
     end
     def shortcuts
-      cf_defaults=SiSU_Env::Info_processing_flag.new
+      cf_defaults=SiSU_Env::InfoProcessingFlag.new
       print <<WOK
 
  #{@cX.ruby}Shorthand for multiple flags#{@cX.off}
@@ -898,14 +898,14 @@ WOK
     end
     def program_found?(program)
       if program
-        rc=if SiSU_Env::Info_settings.new.program?(program)
-          SiSU_Env::Info_settings.new.program?(program)
+        rc=if SiSU_Env::InfoSettings.new.program?(program)
+          SiSU_Env::InfoSettings.new.program?(program)
         else ''
         end
         if program =='rmagick'; program='identify' #rmagick is ruby lib uses imagemagick's identify
         end
-        bin=if SiSU_Env::System_call.new.program_found?(program)
-          SiSU_Env::System_call.new.program_found?(program)
+        bin=if SiSU_Env::SystemCall.new.program_found?(program)
+          SiSU_Env::SystemCall.new.program_found?(program)
         else 'false'
         end
       else bin,rc='false','false'
@@ -915,8 +915,8 @@ WOK
       end
     end
     def sisu_version
-      version=SiSU_Env::Info_version.instance.get_version
-      rb_ver=SiSU_Env::Info_version.instance.rbversion
+      version=SiSU_Env::InfoVersion.instance.get_version
+      rb_ver=SiSU_Env::InfoVersion.instance.rbversion
       if version[:version]
         SiSU_Screen::Ansi.new('-v',version[:project],version[:version],version[:date_stamp],version[:date],rb_ver).version
       else puts 'SiSU version information not available'
@@ -924,7 +924,7 @@ WOK
     end
     def rhost
       @ls=leading_spaces=' '*49
-      @rhost=SiSU_Env::Info_remote_host.new.rhost
+      @rhost=SiSU_Env::InfoRemoteHost.new.rhost
       def r1
         if @rhost.r1; @rhost.r1 + "\n"
         else ''
@@ -964,7 +964,7 @@ WOK
       self
     end
     def environment
-      cf_defaults=SiSU_Env::Info_processing_flag.new
+      cf_defaults=SiSU_Env::InfoProcessingFlag.new
       sisu_version
       x =<<WOK
   #{@cX.green}current and output directories#{@cX.off}
@@ -1023,8 +1023,8 @@ WOK
   sisu -5                                        #{@cX.blue}#{cf_defaults.cf_5}#{@cX.off}
                                                   (defaults may be changed in active sisurc.yml file under flag:)
   #{@cX.green}special powers, risky operations set:#{@cX.off}
-  zap (delete output directories)                #{@cX.blue}#{SiSU_Env::Info_settings.new.permission?('zap')}#{@cX.off}
-  css copy (copy over css files)                 #{@cX.blue}#{SiSU_Env::Info_settings.new.permission?('css_modify')}#{@cX.off}
+  zap (delete output directories)                #{@cX.blue}#{SiSU_Env::InfoSettings.new.permission?('zap')}#{@cX.off}
+  css copy (copy over css files)                 #{@cX.blue}#{SiSU_Env::InfoSettings.new.permission?('css_modify')}#{@cX.off}
                                                   (true/false defaults may be changed in active sisurc.yml file under permissions_set:)
 
 NOTE: for HELP type 'sisu --help', 'sisu --help [help request]', 'man sisu', (or see the system or online documentation)
diff --git a/lib/sisu/v3dv/html.rb b/lib/sisu/v3dv/html.rb
index f8c3b32d..6306975f 100644
--- a/lib/sisu/v3dv/html.rb
+++ b/lib/sisu/v3dv/html.rb
@@ -75,7 +75,7 @@ module SiSU_HTML
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       songsheet
@@ -95,21 +95,21 @@ module SiSU_HTML
           : SiSU_Screen::Ansi.new(@opt.cmd,'HTML',tool).green_title_hi
           SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"file://#{@md.file.output_path.html_seg.dir}/#{@md.file.base_filename.html_segtoc}").flow if @opt.cmd =~/[MV]/
         end
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
         data=nil
-        @tuned_file_array=SiSU_HTML::Source::Html_environment.new(@particulars).tuned_file_instructions
+        @tuned_file_array=SiSU_HTML::Source::HTML_Environment.new(@particulars).tuned_file_instructions
         data=@tuned_file_array
         scr_endnotes=SiSU_HTML::Source::Endnotes.new(data,@md).scroll
         toc=SiSU_HTML::Source::Toc.new(@md,data).songsheet
-        links_guide=SiSU_HTML::Source::Links_guide.new(data,@md).toc
+        links_guide=SiSU_HTML::Source::LinksGuide.new(data,@md).toc
         data=@tuned_file_array
-        scr_toc=SiSU_HTML::Source::Scroll_head_and_segtoc.new(@md,toc,links_guide).in_common #watch
+        scr_toc=SiSU_HTML::Source::ScrollHeadAndSegToc.new(@md,toc,links_guide).in_common #watch
         SiSU_HTML::Source::Seg.new(@md,data).songsheet
         data=@tuned_file_array
         scr=SiSU_HTML::Source::Scroll.new(@md,data,scr_endnotes).songsheet
-        scroll=SiSU_HTML::Source::Scroll_output.new(scr_toc,scr[:body],scr[:metadata],scr[:owner_details],scr[:tails],@md).publish
+        scroll=SiSU_HTML::Source::ScrollOutput.new(scr_toc,scr[:body],scr[:metadata],scr[:owner_details],scr[:tails],@md).publish
         SiSU_HTML::Source::Output.new(scroll,@md).scroll
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         unless @opt.cmd =~/[MV]/ #check maintenance flag
           texfiles=Dir["#{@env.processing_path.tune}/#{@opt.fns}*"]
@@ -128,12 +128,12 @@ module SiSU_HTML
       end
     end
     private
-    class Html_environment
+    class HTML_Environment
       def initialize(particulars)
         @particulars=particulars
         @md,@env=particulars.md,particulars.env
-        @vz=SiSU_Env::Get_init.instance.skin
-        @env,@css,@symlnk=particulars.env,SiSU_Style::CSS.new,SiSU_Env::Create_system_link.new #home
+        @vz=SiSU_Env::GetInit.instance.skin
+        @env,@css,@symlnk=particulars.env,SiSU_Style::CSS.new,SiSU_Env::CreateSystemLink.new #home
       end
       def link_images
         @symlnk.images
@@ -152,16 +152,16 @@ module SiSU_HTML
         @tuned_file_array
       end
     end
-    class Links_guide
+    class LinksGuide
       @links_guide_toc=[]
       def initialize(data,md)
         @data,@md=data,md
-        @links_guide_=SiSU_Env::Create_site.new(@md.opt.cmd).html_quick_ref?
+        @links_guide_=SiSU_Env::CreateSite.new(@md.opt.cmd).html_quick_ref?
       end
       def toc
         @links_guide_toc=[]
         if @links_guide_
-          format_head_toc=SiSU_HTML_Format::Head_toc.new(@md)
+          format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
           guide_type='horzontal' #values: horizontal or vertical
           @links_guide_toc << format_head_toc.links_guide_open(guide_type)
           if defined? @md.lnk \
@@ -173,12 +173,12 @@ module SiSU_HTML
                 end
                 s_lnk_url,s_lnk_lnk=l[:url],l[:say]
                 txt_obj={ lnk_url: s_lnk_url, lnk_txt: s_lnk_lnk, target: target }
-                lev_dob_ocn=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+                lev_dob_ocn=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
                 @links_guide_toc << lev_dob_ocn.links_guide if s_lnk_lnk
               end
             end
           end
-          format_head_toc=SiSU_HTML_Format::Head_toc.new(@md)
+          format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
           @links_guide_toc << format_head_toc.links_guide_close #(guide_type)
           @links_guide_toc
         else ''
@@ -192,7 +192,7 @@ module SiSU_HTML
       end
       def scroll
         @scr_endnotes=[]
-        format_head_scroll=SiSU_HTML_Format::Head_scroll.new(@md)
+        format_head_scroll=SiSU_HTML_Format::HeadScroll.new(@md)
         @data.each do |dob|
           pg=dob.dup
           unless pg.is =~/^code/
@@ -209,7 +209,7 @@ module SiSU_HTML
               end
               endnote_array.flatten.each do |note|
                 txt_obj={ txt: note }
-                format_scroll=SiSU_HTML_Format::Format_scroll.new(@md,txt_obj)
+                format_scroll=SiSU_HTML_Format::FormatScroll.new(@md,txt_obj)
                 @scr_endnotes << format_scroll.endnote_body
               end
             end
@@ -218,13 +218,13 @@ module SiSU_HTML
         @scr_endnotes
       end
     end
-    class Toc <Links_guide
+    class Toc <LinksGuide
       @@toc={ seg: [], seg_mini: [], scr: [] }
       @@seg_url=''
       @@firstseg=nil
       def initialize(md=nil,data='')
         @data,@md=data,md
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @tell=SiSU_Screen::Ansi.new(@md.opt.cmd) if @md
       end
       def songsheet #extracts toc for scroll & seg
@@ -261,7 +261,7 @@ module SiSU_HTML
                 @@toc[:seg] << toc[:seg] if toc[:seg]
                 @@toc[:seg_mini] << toc[:seg_mini] if toc[:seg_mini]
                 @@toc[:scr] << toc[:scr] if toc[:scr]
-              rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+              rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
               end
             end
           end
@@ -291,22 +291,22 @@ WOK
 #not used -->
       def level_endnotes
         if @md.flag_endnotes
-          format_head_scroll=SiSU_HTML_Format::Head_scroll.new(@md)
+          format_head_scroll=SiSU_HTML_Format::HeadScroll.new(@md)
           @@toc[:scr] << format_head_scroll.toc_endnote
         end
       end
       def level_concordance
-        format_head_toc=SiSU_HTML_Format::Head_toc.new(@md)
+        format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
         @@toc[:seg_mini] << format_head_toc.mini_seg_concordance
       end
       def level_metadata
-        format_head_toc=SiSU_HTML_Format::Head_toc.new(@md)
+        format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
         @@toc[:scr] << format_head_toc.metadata
         @@toc[:seg] << format_head_toc.seg_metadata
         @@toc[:seg_mini] << format_head_toc.mini_seg_metadata
       end
       def level_word_index
-        format_head_toc=SiSU_HTML_Format::Head_toc.new(@d0c)
+        format_head_toc=SiSU_HTML_Format::HeadToc.new(@d0c)
         @@toc[:scr] << format_head_toc.concordance
         @@toc[:seg] << format_head_toc.concordance
         @@toc[:seg_mini] << format_head_toc.mini_concordance
@@ -317,7 +317,7 @@ WOK
         linkname,link=dob.obj.strip,dob.ocn
         if link \
         and link !~/#/ #% keep eye on link
-          p_num=SiSU_HTML_Format::Paragraph_number.new(@md,link)
+          p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,link)
         end
         title=if dob.obj !~/Metadata/; linkname
         else
@@ -326,7 +326,7 @@ WOK
         end
         toc={}
         txt_obj={ txt: title }
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc[:seg]=if dob.name =~/^meta/ \
         and dob.obj =~/Document Information/
           format_toc.lev0
@@ -354,7 +354,7 @@ WOK
           %{<b><a href="##{link}">#{linkname}</a></b>}
         end
         txt_obj={ txt: title }
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc[:scr]=if dob.name =~/^meta/ \
         and dob.obj =~/Document Information/
           format_toc.lev0
@@ -367,18 +367,18 @@ WOK
         linkname,ocn=dob.obj.strip,dob.ocn
         p_num=if ocn \
         and ocn !~/#/
-          SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+          SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
         else nil
         end
         txt_obj={ txt: linkname }
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc={}
         toc[:seg]=format_toc.lev2
         toc[:seg_mini]=format_toc.mini_lev2
         if p_num
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev2
         end
         toc
@@ -388,18 +388,18 @@ WOK
         linkname,ocn=dob.obj.strip,dob.ocn
         p_num=if ocn \
         and ocn !~/#/
-          SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+          SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
         else nil
         end
         txt_obj={ txt: linkname }
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc={}
         toc[:seg]=format_toc.lev3
         toc[:seg_mini]=format_toc.mini_lev3
         if p_num
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev3
         end
         toc
@@ -407,7 +407,7 @@ WOK
       def level_4
         dob=@data
         linkname,ocn=dob.obj.strip,dob.ocn
-        p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn) if ocn
+        p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn) if ocn
         if dob.ln ==4
           seg_link=%{  <a href="#{dob.name}#{@md.lang_code_insert}#{Sfx[:html]}" target="_top">
     #{dob.obj}
@@ -418,7 +418,7 @@ WOK
             %{<a href="\\1#{@md.lang_code_insert}#{Sfx[:html]}" } +
             %{target="_top">\\1 \\2</a> })
         end
-        p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn) if ocn
+        p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn) if ocn
         @file=SiSU_Env::FileOp.new(@md) if @md
         txt_obj=if seg_link=~/sisu_manifest\.html/
           man_link=if @file.output_dir_structure.by_language_code? \
@@ -429,7 +429,7 @@ WOK
           { txt: man_link }
         else { txt: seg_link }
         end
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc={}
         toc[:seg]=format_toc.lev4
         toc[:seg_mini]=format_toc.mini_lev4
@@ -439,7 +439,7 @@ WOK
           { txt: man_link }
         else { txt: title }
         end
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc[:scr]=format_toc.lev4
         toc
        #end
@@ -450,17 +450,17 @@ WOK
         toc={}
         if ocn \
         and ocn !~/#/
-          p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+          p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
           lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:html]}##{ocn}">
     #{linkname}
   </a>}
           txt_obj={ txt: lnk_n_txt }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc[:seg]=format_toc.lev5
           toc[:seg_mini]=format_toc.mini_lev5
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev5
         end
         toc
@@ -471,17 +471,17 @@ WOK
         toc={}
         if ocn \
         and ocn !~/#/
-          p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+          p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
           lnk_n_txt=%{  <a href="#{@@seg_url}#{@md.lang_code_insert}#{Sfx[:html]}##{ocn}">
   #{linkname}
 </a>}
           txt_obj={ txt: lnk_n_txt }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc[:seg]=format_toc.lev6
           toc[:seg_mini]=format_toc.mini_lev6
           title=%{#{p_num.goto}#{linkname}</a>}
           txt_obj={ txt: title }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc[:scr]=format_toc.lev6
         end
         toc
@@ -510,31 +510,31 @@ WOK
         end
       end
     end
-    class Scroll_head_and_segtoc < Toc
+    class ScrollHeadAndSegToc < Toc
       def initialize(md='',toc='',links_guide_toc='')
         @md,@toc,@links_guide_toc=md,toc,links_guide_toc
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
       end
       def in_common
         toc_shared=[]
         @segtoc=[]
         SiSU_Screen::Ansi.new(@md.opt.cmd,'Scroll & Segtoc').txt_grey if @md.opt.cmd =~/[MVv]/
-        format_head_toc=SiSU_HTML_Format::Head_toc.new(@md)
+        format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
         dochead=format_head_toc.head
         dochead.gsub!(/toc\.(html)/,'doc.\1') #kludge
         ads=SiSU_HTML_Promo::Ad.new(@md)
         toc_shared << dochead << ads.div.major
         @segtoc << format_head_toc.head << ads.div.major
-        toc_shared << format_head_toc.toc_head_escript if SiSU_HTML_Format::Head_toc.method_defined? :toc_head_escript
-        @segtoc << format_head_toc.toc_head_escript if SiSU_HTML_Format::Head_toc.method_defined? :toc_head_escript
+        toc_shared << format_head_toc.toc_head_escript if SiSU_HTML_Format::HeadToc.method_defined? :toc_head_escript
+        @segtoc << format_head_toc.toc_head_escript if SiSU_HTML_Format::HeadToc.method_defined? :toc_head_escript
         toc_shared << format_head_toc.scroll_head_navigation_band
         if defined? @md.rights.all
           rights=format_head_toc.rights.all
-          rights=SiSU_HTML_Tune::Clean_html.new(rights).clean
+          rights=SiSU_HTML_Tune::CleanHTML.new(rights).clean
         end
         if @md.prefix_b
           prefix_b=format_head_toc.notes.prefix_b
-          prefix_b=SiSU_HTML_Tune::Clean_html.new(prefix_b).clean
+          prefix_b=SiSU_HTML_Tune::CleanHTML.new(prefix_b).clean
         end
         @segtoc << format_head_toc.seg_head_navigation_band
         toc_shared << format_head_toc.scroll_head_title_banner_open
@@ -543,14 +543,14 @@ WOK
         doc_title_endnote=@md.title.full.gsub(/(\*+)/,'<sup><a href="#endnotes">\1</a></sup>')
         tmp_head=doc_title_endnote + "\n"
         txt_obj={ txt: tmp_head }
-        format_txt_obj=SiSU_HTML_Format::Format_text_object.new(@md,txt_obj)
+        format_txt_obj=SiSU_HTML_Format::FormatTextObject.new(@md,txt_obj)
         toc_shared << format_txt_obj.center_bold
         @segtoc << format_txt_obj.center_bold
         if defined? @md.creator.author
           creator_endnote=@md.creator.author.gsub(/(\*+)/,%{&nbsp;<sup><a href="#notes">\\1</a></sup>})
           tmp_head=creator_endnote + "\n"
           txt_obj={ txt: tmp_head }
-          format_txt_obj=SiSU_HTML_Format::Format_text_object.new(@md,txt_obj)
+          format_txt_obj=SiSU_HTML_Format::FormatTextObject.new(@md,txt_obj)
           toc_shared << format_txt_obj.center_bold
           @segtoc << format_txt_obj.center_bold
         end
@@ -591,11 +591,11 @@ WOK
         toc_shared
       end
     end
-    class Table < SiSU_HTML_Table::Table_html
+    class Table < SiSU_HTML_Table::TableHTML
     end
     class Scroll < SiSU_HTML_Scroll::Scroll
     end
-    class Scroll_output
+    class ScrollOutput
       def initialize(scr_toc,scr_body,scr_metadata,scr_owner_details,scr_tails,md)
         @scr_toc,@scr_body,@scr_metadata,@scr_owner_details,@scr_tails,@md=scr_toc,scr_body,scr_metadata,scr_owner_details,scr_tails,md
       end
@@ -627,7 +627,7 @@ WOK
               @filename_html_scroll.puts para,"\n"
             end
           end
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure; @filename_html_scroll.close
         end
       end
@@ -643,7 +643,7 @@ WOK
               @filename_html_segtoc.puts para,"\n"
             end
           end
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
           @filename_html_segtoc.close
           unless FileTest.file?("#{@file.output_path.html_seg.dir}/#{@md.file.base_filename.html_seg_index}")
diff --git a/lib/sisu/v3dv/html_format.rb b/lib/sisu/v3dv/html_format.rb
index 662e7c75..968d9747 100644
--- a/lib/sisu/v3dv/html_format.rb
+++ b/lib/sisu/v3dv/html_format.rb
@@ -58,11 +58,11 @@
 =end
 module SiSU_HTML_Format
   include SiSU_Viz
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(md,ocn)
       @md,@ocn=md,ocn.to_s
       @ocn ||=''
-      vz=SiSU_Env::Get_init.instance.skin
+      vz=SiSU_Env::GetInit.instance.skin
       @skin_no_ocn=if defined? vz.ocn_display_off \
       and vz.ocn_display_off==true
         true
@@ -95,15 +95,15 @@ module SiSU_HTML_Format
       %{<a href="##{@ocn}">}
     end
   end
-  class Head_information
+  class HeadInformation
     require_relative 'shared_xml'                       # shared_xml.rb
     include SiSU_Viz
     attr_reader :md,:rdf,:vz
     def initialize(md)
       @md=md
       # DublinCore 1 - title
-      @vz=SiSU_Env::Get_init.instance.skin
-      @css=SiSU_Env::CSS_stylesheet.new(md)
+      @vz=SiSU_Env::GetInit.instance.skin
+      @css=SiSU_Env::CSS_Stylesheet.new(md)
       @seg_name_html=(SiSU_HTML::Source::Seg.new.seg_name_html || [])
       @seg_name_html_tracker=(SiSU_HTML::Source::Seg.new.seg_name_html_tracker || [])
       @toc,@index='toc','index'
@@ -149,12 +149,12 @@ module SiSU_HTML_Format
 </html>}
     end
   end
-  class Widget < Head_information
+  class Widget < HeadInformation
     def initialize(md)
       super(md)
       @md=md
-      @cf_defaults=SiSU_Env::Info_processing_flag.new
-      @env=SiSU_Env::Info_env.new(@md.fns)
+      @cf_defaults=SiSU_Env::InfoProcessingFlag.new
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
       @file=SiSU_Env::FileOp.new(@md)
     end
     def home
@@ -183,7 +183,7 @@ module SiSU_HTML_Format
 }
     end
     def search
-      env=SiSU_Env::Info_env.new(@md.fns,@md)
+      env=SiSU_Env::InfoEnv.new(@md.fns,@md)
       env.widget.search_form('sisusearch',nil,nil,true)
     end
     def manifest
@@ -263,7 +263,7 @@ module SiSU_HTML_Format
   end
   class XML
   end
-  class Head_toc < Head_information
+  class HeadToc < HeadInformation
     def initialize(md)
       super(md)
       @md=md
@@ -621,7 +621,7 @@ WOK
 }
     end
   end
-  class Head_seg < Head_information
+  class HeadSeg < HeadInformation
     def initialize(md) #(md='')
       super(md)
     end
@@ -771,7 +771,7 @@ WOK
   <font size="2">}
     end
     def heading_advert_local_1
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <center>
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -783,7 +783,7 @@ WOK
 </center>}
     end
     def heading_advert_local_2
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <center>
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -795,7 +795,7 @@ WOK
 </center>}
     end
     def heading_advert_external
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <center>
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -927,7 +927,7 @@ WOK
 }
     end
   end
-  class Head_scroll < Head_toc
+  class HeadScroll < HeadToc
     def initialize(md)
       super(md)
     end
@@ -944,8 +944,8 @@ WOK
 #{@vz.table_close}}
     end
   end
-  class Format_text_object
-    @vz=SiSU_Env::Get_init.instance.skin
+  class FormatTextObject
+    @vz=SiSU_Env::GetInit.instance.skin
     attr_accessor :md,:t_o,:txt,:ocn,:format,:table,:link,:linkname,:paranum,:p_num,:headname,:banner,:url
     def initialize(md,t_o)
       @md,@t_o=md,t_o
@@ -976,8 +976,8 @@ WOK
       if @txt and not @txt.empty?
         @txt.gsub!(/#{Mx[:mk_o]}[-~]##{Mx[:mk_c]}/,'')
       end
-      @p_num=Paragraph_number.new(@md,@ocn)
-      @vz=SiSU_Env::Get_init.instance.skin
+      @p_num=ParagraphNumber.new(@md,@ocn)
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def nametags_scroll(dob)
       tags=''
@@ -1074,7 +1074,7 @@ WOK
     end
     def table
       @txt=if @t_o.obj !~/^<table\s/
-        table=SiSU_HTML_Shared::Table_html.new(@t_o) #move, make happen earlier
+        table=SiSU_HTML_Shared::TableHTML.new(@t_o) #move, make happen earlier
         @txt=table.table.obj
       else @txt
       end
@@ -1219,13 +1219,13 @@ WOK
       %{<p class="centerbold">#{@txt}</p>\n}
     end
   end
-  class Format_scroll < Format_text_object
+  class FormatScroll < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
   end
-  class Format_seg < Format_text_object
+  class FormatSeg < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
     end
@@ -1364,7 +1364,7 @@ WOK
       "<center>#{@txt}</center>"
     end
   end
-  class Format_toc < Format_text_object
+  class FormatToc < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
     end
@@ -1455,7 +1455,7 @@ WOK
 }
     end
   end
-  class Format_str
+  class FormatStr
     def initialize(md,str)
       @str=str
     end
diff --git a/lib/sisu/v3dv/html_minitoc.rb b/lib/sisu/v3dv/html_minitoc.rb
index d2bfd46f..7f891a2e 100644
--- a/lib/sisu/v3dv/html_minitoc.rb
+++ b/lib/sisu/v3dv/html_minitoc.rb
@@ -60,7 +60,7 @@
   module SiSU_HTML_MiniToc
     require_relative 'html_tune'                        # html_tune.rb
       include SiSU_HTML_Tune
-    class Toc_mini
+    class TocMini
       @@seg_mini=nil
       @@seg_url=''
       @@firstseg=nil
@@ -80,12 +80,12 @@
             txt.obj.gsub!(@pat_strip_heading_name,'\1')
             txt.obj.gsub(/(.*?)<a name="(\d+)"><\/a>(.*)/,'\1') #2002w42 altered gsub! - problematic? - suspect
             toc=case txt.ln
-            when 1; Toc_mini.new(@md,txt).level_1
-            when 2; Toc_mini.new(@md,txt).level_2
-            when 3; Toc_mini.new(@md,txt).level_3
-            when 4; Toc_mini.new(@md,txt).level_4
-            when 5; Toc_mini.new(@md,txt).level_5
-            when 6; Toc_mini.new(@md,txt).level_6
+            when 1; TocMini.new(@md,txt).level_1
+            when 2; TocMini.new(@md,txt).level_2
+            when 3; TocMini.new(@md,txt).level_3
+            when 4; TocMini.new(@md,txt).level_4
+            when 5; TocMini.new(@md,txt).level_5
+            when 6; TocMini.new(@md,txt).level_6
             else
             end
             @toc << toc
@@ -95,15 +95,15 @@
       end
     protected
       def level_concordance
-        format_head_toc=SiSU_HTML_Format::Head_toc.new(@md)
+        format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
         @@seg_mini << format_head_toc.mini_seg_concordance
       end
       def level_metadata
-        format_head_toc=SiSU_HTML_Format::Head_toc.new(@md)
+        format_head_toc=SiSU_HTML_Format::HeadToc.new(@md)
         @@seg_mini << format_head_toc.mini_seg_metadata
       end
       def level_word_index
-        format_head_toc=SiSU_HTML_Format::Head_toc.new(@d0c)
+        format_head_toc=SiSU_HTML_Format::HeadToc.new(@d0c)
         @@seg_mini << format_head_toc.mini_concordance
       end
       def level_1
@@ -119,7 +119,7 @@
         end
         toc={}
         txt_obj={ txt: title }
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc_mini=if txt.name =~/^meta/ and txt.obj=~/Document Information/
           format_toc.mini_tail
         else format_toc.mini_lev1
@@ -133,14 +133,14 @@
           txt.obj.gsub!(@pat_strip_heading_name,'\1')
         end
         txt_obj={ txt: txt.obj }
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc_mini=format_toc.mini_lev2
         toc_mini
       end
       def level_3
         txt=@data
         txt_obj={ txt: txt.obj }
-        format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+        format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
         toc_mini=format_toc.mini_lev3
         toc_mini
       end
@@ -158,7 +158,7 @@
               %{target="_top">\\1 \\2</a> })
           end
           txt_obj={ txt: seg_link }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc_mini=format_toc.mini_lev4
           toc_mini
         end
@@ -174,7 +174,7 @@
     #{txt.obj}
   </a>}
           txt_obj={ txt: lnk_n_txt }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc_mini=format_toc.mini_lev5
         toc_mini
       end
@@ -189,7 +189,7 @@
     #{txt.obj}
   </a>}
           txt_obj={ txt: lnk_n_txt }
-          format_toc=SiSU_HTML_Format::Format_toc.new(@md,txt_obj)
+          format_toc=SiSU_HTML_Format::FormatToc.new(@md,txt_obj)
           toc_mini=format_toc.mini_lev6
         toc_mini
       end
diff --git a/lib/sisu/v3dv/html_promo.rb b/lib/sisu/v3dv/html_promo.rb
index f5595658..7617b52c 100644
--- a/lib/sisu/v3dv/html_promo.rb
+++ b/lib/sisu/v3dv/html_promo.rb
@@ -62,10 +62,10 @@ module SiSU_HTML_Promo
   class Ad
     def initialize(md)
       @md=md
-      @env=SiSU_Env::Info_env.new(@md.fns,@md)
-      @rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
-      @ad=SiSU_Env::Get_init.instance.ads
-      @vz=SiSU_Env::Get_init.instance.skin
+      @env=SiSU_Env::InfoEnv.new(@md.fns,@md)
+      @rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
+      @ad=SiSU_Env::GetInit.instance.ads
+      @vz=SiSU_Env::GetInit.instance.skin
       @flag=@env.widget.promo?
     end
     def div
diff --git a/lib/sisu/v3dv/html_scroll.rb b/lib/sisu/v3dv/html_scroll.rb
index 2efdb8bd..b14d841f 100644
--- a/lib/sisu/v3dv/html_scroll.rb
+++ b/lib/sisu/v3dv/html_scroll.rb
@@ -64,14 +64,14 @@ module SiSU_HTML_Scroll
   class Scroll
     def initialize(md='',data='',endnotes='')
       @md,@data,@endnotes=md,data,endnotes
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def songsheet
       begin
         scr=Scroll.new(@md,@data,@endnotes).markup
         scr[:tails]=Scroll.new(@md).tails
         scr
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
       end
     end
@@ -103,9 +103,9 @@ module SiSU_HTML_Scroll
           unless dob.is =~/^code/; dob.obj.gsub!(/(?:#{Mx[:en_a_o]}.+?#{Mx[:en_a_c]}|#{Mx[:en_b_o]}.+?#{Mx[:en_b_c]})\s*/m,' ')
           end
           if defined? dob.ocn
-            @p_num=SiSU_HTML_Format::Paragraph_number.new(@md,dob.ocn)
+            @p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,dob.ocn)
           end
-          sto=SiSU_HTML_Format::Format_text_object.new(@md,dob)
+          sto=SiSU_HTML_Format::FormatTextObject.new(@md,dob)
           para_html=if dob.is=='heading'
             x=if dob.ln==1
               sto.heading_body1
@@ -137,7 +137,7 @@ module SiSU_HTML_Scroll
             elsif dob.ln==4 \
             and dob.obj=='Index'
               sto.heading_body4
-              book_idx=SiSU_Particulars::Combined_singleton.instance.get_idx_html(@md.opt).html_idx
+              book_idx=SiSU_Particulars::CombinedSingleton.instance.get_idx_html(@md.opt).html_idx
               book_idx.each do |x| #takes book index prepared for segments and strips segment identifying info
                 x.gsub!(/<a href="\S+?\.html#(\d+)">(\1(?:-\d+)?)<\/a>/,'<a href="#\1">\2</a>')
               end
@@ -199,7 +199,7 @@ module SiSU_HTML_Scroll
     end
     def tails
       scr_tail=[]
-      format_head_scroll=SiSU_HTML_Format::Head_toc.new(@md)
+      format_head_scroll=SiSU_HTML_Format::HeadToc.new(@md)
       ads=SiSU_HTML_Promo::Ad.new(@md)
       scr_tail << format_head_scroll.scroll_tail << ads.div.close << ads.display << format_head_scroll.html_close
       scr_tail
diff --git a/lib/sisu/v3dv/html_segments.rb b/lib/sisu/v3dv/html_segments.rb
index 39b3984f..69388229 100644
--- a/lib/sisu/v3dv/html_segments.rb
+++ b/lib/sisu/v3dv/html_segments.rb
@@ -61,10 +61,10 @@ module SiSU_HTML_Seg
   require_relative 'html'                               # html.rb
   require_relative 'html_promo'                         # html_promo.rb
   require_relative 'shared_metadata'                    # shared_metadata.rb
-  class Seg_output
+  class SegOutput
     def initialize(md,outputfile,seg,minitoc,type='')
       @md,@output_seg_file,@seg,@minitoc,@type=md,outputfile,seg,minitoc,type
-      @title_banner_=SiSU_Env::Create_site.new(@md.opt.cmd).html_seg_title_banner?
+      @title_banner_=SiSU_Env::CreateSite.new(@md.opt.cmd).html_seg_title_banner?
       @file=SiSU_Env::FileOp.new(@md)
     end
     def output
@@ -73,33 +73,33 @@ module SiSU_HTML_Seg
         filename_seg << @seg[:title] << @seg[:tocband_banner]
         if @type=='endnotes'
           @seg[:headings]=[]
-          format_head_seg=SiSU_HTML_Format::Head_seg.new(@md)
+          format_head_seg=SiSU_HTML_Format::HeadSeg.new(@md)
           if @title_banner_
             @seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author)
           end
           txt_obj={ txt: 'Endnotes', ocn_display: '' }
-          format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+          format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
           @seg[:headings] << format_seg.title_heading1
           filename_seg << @seg[:heading_endnotes] << @minitoc << @seg[:headings] << %{\n<div class="content">\n} << @seg[:endnote_all] << '</div>' # << '</div>'
         elsif @type=='idx'
           @seg[:headings]=[]
-          format_head_seg=SiSU_HTML_Format::Head_seg.new(@md)
+          format_head_seg=SiSU_HTML_Format::HeadSeg.new(@md)
           if @title_banner_
             @seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author)
           end
           txt_obj={ txt: 'Index', ocn_display: '' }
-          format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+          format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
           @seg[:headings] << format_seg.title_heading1
           filename_seg << @seg[:heading_idx] << @minitoc << @seg[:headings] << %{\n<div class="content">\n} << @seg[:idx] << '</div>' # << '</div>'
         elsif @type=='metadata'
           metadata=Metadata::Summary.new(@md).xhtml_display.metadata
           @seg[:headings]=[]
-          format_head_seg=SiSU_HTML_Format::Head_seg.new(@md)
+          format_head_seg=SiSU_HTML_Format::HeadSeg.new(@md)
           if @title_banner_
             @seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author)
           end
           txt_obj={ txt: 'Metadata', ocn_display: '' }
-          format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+          format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
           @seg[:headings] << format_seg.title_heading1
           filename_seg << @seg[:heading_idx] << @minitoc << @seg[:headings] << %{\n<div class="content">\n} << metadata << '</div>' # << '</div>'
         else
@@ -134,12 +134,12 @@ module SiSU_HTML_Seg
     attr_reader :seg_name_html,:seg_name_html_tracker
     def initialize(md=nil,data='')
       @md,@data=md,data
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
       @seg_name_html=@@seg_name_html || nil
       @seg_name_html_tracker=@@tracker || nil
-      @env=SiSU_Env::Info_env.new(@md.fns) if @md
+      @env=SiSU_Env::InfoEnv.new(@md.fns) if @md
       if @md
-        @title_banner_=SiSU_Env::Create_site.new(@md.opt.cmd).html_seg_title_banner?
+        @title_banner_=SiSU_Env::CreateSite.new(@md.opt.cmd).html_seg_title_banner?
       end
     end
     def songsheet
@@ -149,7 +149,7 @@ module SiSU_HTML_Seg
         data=articles(data)
         Seg.new.cleanup # (((( added ))))
         #### (((( END )))) ####
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
         @@seg_name=[]
       end
@@ -161,8 +161,8 @@ module SiSU_HTML_Seg
       printed_endnote_seg='n'
       idx_html=nil
       if @md.book_idx
-        #my_make_source_file=SiSU_Env::Create_file.new(@md.fns)
-        idx_html=SiSU_Particulars::Combined_singleton.instance.get_idx_html(@md.opt).html_idx
+        #my_make_source_file=SiSU_Env::CreateFile.new(@md.fns)
+        idx_html=SiSU_Particulars::CombinedSingleton.instance.get_idx_html(@md.opt).html_idx
         idx_html.each {|x| @@seg[:idx] << x }
         @@seg[:heading_idx]=''
       end
@@ -177,7 +177,7 @@ module SiSU_HTML_Seg
       @@seg_total=@@seg_name.length
       testforartnum=@@seg_name_html
       SiSU_Screen::Ansi.new(@md.opt.cmd,@@seg_name.length).segmented if @md.opt.cmd =~/[MVv]/
-      map_nametags=SiSU_Particulars::Combined_singleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
+      map_nametags=SiSU_Particulars::CombinedSingleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
       data.each do |dob|
         if defined? dob.obj \
         and dob.obj =~/href="#{Xx[:segment]}#+\S+?"/
@@ -228,7 +228,7 @@ module SiSU_HTML_Seg
             if (dob.is=='heading' or dob.is=='heading_insert') \
             and dob.ln==4
               if tracking != 0
-                dirout=SiSU_Env::Info_env.new(@md.fns)
+                dirout=SiSU_Env::InfoEnv.new(@md.fns)
                 dir_sisu=dirout.path.output
                 @file=SiSU_Env::FileOp.new(@md)
                 unless FileTest.directory?(@file.output_path.html_seg.dir)
@@ -242,15 +242,15 @@ module SiSU_HTML_Seg
                 : ''
                 if dob.is=='heading' \
                 or @@seg_name_html[tracking-1] !~/endnotes|book_index|metadata/
-                  Seg_output.new(@md,output_seg_file,@@seg,minitoc).output
+                  SegOutput.new(@md,output_seg_file,@@seg,minitoc).output
                 elsif dob.is=='heading_insert'
                   if @@seg_name_html[tracking-1]=='endnotes'
-                    Seg_output.new(@md,output_seg_file,@@seg,minitoc,'endnotes').output
+                    SegOutput.new(@md,output_seg_file,@@seg,minitoc,'endnotes').output
                   elsif @@seg_name_html[tracking-1]=='book_index'
-                    Seg_output.new(@md,output_seg_file,@@seg,minitoc,'idx').output
+                    SegOutput.new(@md,output_seg_file,@@seg,minitoc,'idx').output
                     @@seg[:idx]=[]
                   elsif @@seg_name_html[tracking-1]=='metadata'
-                    Seg_output.new(@md,output_seg_file,@@seg,minitoc,'metadata').output
+                    SegOutput.new(@md,output_seg_file,@@seg,minitoc,'metadata').output
                   else puts "#{__FILE__}::#{__LINE__}"
                   end
                 else puts "#{__FILE__}::#{__LINE__}"
@@ -262,7 +262,7 @@ module SiSU_HTML_Seg
                #if @@seg_name_html[tracking] =~/metadata/ # this is for metadata
                #  segfilename="#{@md.dir_out}/#{@md.fnl[:pre]}#{@@seg_name_html[tracking]}#{@md.fnl[:mid]}#{Sfx[:html]}#{@md.fnl[:post]}"
                #  output_seg_file=File.new(segfilename,'w')
-               #  Seg_output.new(@md,output_seg_file,@@seg,minitoc,'metadata').output
+               #  SegOutput.new(@md,output_seg_file,@@seg,minitoc,'metadata').output
                #  Seg.new.reinitialise
                #end
               end
@@ -292,7 +292,7 @@ module SiSU_HTML_Seg
       data
     end
     def heading_art(dob)
-      format_head_seg=SiSU_HTML_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_HTML_Format::HeadSeg.new(@md)
       if (dob.is=='heading' or dob.is=='heading_insert') \
       and dob.ln.to_s =~/^[1-6]/
         if @@tracker < @@seg_total-1; @@seg[:dot_nav]=format_head_seg.dot_control_pre_next
@@ -304,7 +304,7 @@ module SiSU_HTML_Seg
     end
     def head(dob)
       clean=/<!.*?!>|<:.*?>/
-      format_head_seg=SiSU_HTML_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_HTML_Format::HeadSeg.new(@md)
       if @@tracker < @@seg_total-1
         if @@tracker==0; @@segtocband=format_head_seg.toc_next2 #if format_head_seg.toc_next2
         else             @@segtocband=format_head_seg.toc_pre_next2 #if format_head_seg.toc_pre_next2
@@ -320,16 +320,16 @@ module SiSU_HTML_Seg
         else ''
         end
         @@seg[:tocband_bannerless] << '<br />' << conditional_div_close << format_head_seg.navigation_band_bottom(@@segtocband,@@seg[:dot_nav])
-        @@seg[:headings] << format_head_seg.seg_head_escript if SiSU_HTML_Format::Head_seg.method_defined? :seg_head_escript #debug PHP move up in text #bug
+        @@seg[:headings] << format_head_seg.seg_head_escript if SiSU_HTML_Format::HeadSeg.method_defined? :seg_head_escript #debug PHP move up in text #bug
         if @title_banner_
           @@seg[:headings] << format_head_seg.title_banner(@md.title.main,@md.title.sub,@author).gsub(clean,'')
         end
         ocn=if @@heading1[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: @@heading1, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading1.gsub(clean,'')
         @@heading1.gsub!(/&nbsp;<a name="-[\d*+]+" href="#_[\d*+]+">&nbsp;<sup>[\d*+]+<\/sup>&nbsp;<\/a>/,'')
       end
@@ -338,9 +338,9 @@ module SiSU_HTML_Seg
         ocn=if heading2[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: heading2, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading2.gsub(clean,'')
         @@heading2.gsub!(/&nbsp;<a name="-[\d*+]+" href="#_[\d*+]+">&nbsp;<sup>[\d*+]+<\/sup>&nbsp;<\/a>/,'')
       end
@@ -349,9 +349,9 @@ module SiSU_HTML_Seg
         ocn=if heading3[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: heading3, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading3.gsub(clean,'')
         @@heading3.gsub!(/&nbsp;<a name="-[\d*+]+" href="#_[\d*+]+">&nbsp;<sup>[\d*+]+<\/sup>&nbsp;<\/a>/,'')
       end
@@ -360,21 +360,21 @@ module SiSU_HTML_Seg
         ocn=if heading4[/.+?#{Mx[:id_o]}~(\d+);(?:[oh]|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/]; $1 #fix
         else ''
         end
-        @p_num=SiSU_HTML_Format::Paragraph_number.new(@md,ocn)
+        @p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,ocn)
         txt_obj={ txt: heading4, ocn_display: @p_num.ocn_display }
-        format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+        format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
         @@seg[:headings] << format_seg.title_heading4.gsub(clean,'')
       end
       @@tracker=@@tracker+1
     end
     def markup(dob)
       @debug=[]
-      format_head_seg=SiSU_HTML_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_HTML_Format::HeadSeg.new(@md)
       if dob.is !~/meta/
         if dob.is =~/(?:heading|para)/ #extend as necessary FIX
-          @p_num=SiSU_HTML_Format::Paragraph_number.new(@md,dob.ocn)
+          @p_num=SiSU_HTML_Format::ParagraphNumber.new(@md,dob.ocn)
         end
-        sto=SiSU_HTML_Format::Format_text_object.new(@md,dob)
+        sto=SiSU_HTML_Format::FormatTextObject.new(@md,dob)
         dob_html=if dob.is =~/heading|para/
           dob_html=if (dob.is=='heading' \
           or dob.is=='heading_insert')
@@ -425,11 +425,11 @@ module SiSU_HTML_Seg
         end
         if dob.obj !~/#{@vz.margin_txt_w1}|#{@vz.margin_txt_w2}/
           if dob.is =~/heading|para/ and (not dob.ocn or dob.ocn.to_s.empty?)
-            format_seg=SiSU_HTML_Format::Format_seg.new(@md,dob)
+            format_seg=SiSU_HTML_Format::FormatSeg.new(@md,dob)
           end
           dob.obj.gsub!(/\s*(-\{{2}~\d+|<:e[:_]\d+>).*/,'')                   #potentially dagerous - removes all paragraphs with <!e_!> #?? workpoint
           if dob.obj =~/<a name="_\d+" href="#-\d+">&nbsp;<sup>/                #endnote- note-
-            format_seg=SiSU_HTML_Format::Format_seg.new(@md,dob)
+            format_seg=SiSU_HTML_Format::FormatSeg.new(@md,dob)
             dob=format_seg.no_paranum
           end
         end
@@ -445,7 +445,7 @@ module SiSU_HTML_Seg
       end
     end
     def tail
-      format_head_seg=SiSU_HTML_Format::Head_seg.new(@md)
+      format_head_seg=SiSU_HTML_Format::HeadSeg.new(@md)
       if @md.flag_auto_endnotes and @@seg_endnotes[@@get_hash_fn]
         @@seg[:tail] <<  %{\n<div class="content">\n<div class="endnote">\n}
         if @@seg_endnotes[@@get_hash_fn].flatten.length > 0
@@ -501,11 +501,11 @@ module SiSU_HTML_Seg
           case dob.ln
           when 5
             txt_obj={ txt: dob.obj.strip, ocn: dob.ocn }
-            format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+            format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
             subtoc=format_seg.subtoc_lev5 #keep and make available, this is the subtoc
           when 6
             txt_obj={ txt: dob.obj.strip, ocn: dob.ocn }
-            format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+            format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
             subtoc=format_seg.subtoc_lev6 #keep and make available, this is the subtoc
           end
           @@seg_subtoc_array << subtoc
@@ -531,7 +531,7 @@ module SiSU_HTML_Seg
               try=e_n.split(/<br \/>/)
               try.each do |e|
                 txt_obj={ txt: e }
-                format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+                format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
                 note_match=if e =~/#{Mx[:pa_o]}i[1-9]#{Mx[:pa_c]}/
                   format_seg.endnote_body_indent
                 else format_seg.endnote_body
@@ -544,7 +544,7 @@ module SiSU_HTML_Seg
               endnote_part_a=note_match_seg[m,1]
               endnote_part_b=note_match_seg[m,2]
               txt_obj={ endnote_part_a: endnote_part_a, endnote_part_b: endnote_part_b }
-              format_seg=SiSU_HTML_Format::Format_seg.new(@md,txt_obj)
+              format_seg=SiSU_HTML_Format::FormatSeg.new(@md,txt_obj)
               note_match_all_seg=format_seg.endnote_seg_body(@@fn) #BUG WATCH 200408
               @@seg[:endnote_all] << note_match_all_seg
             end
diff --git a/lib/sisu/v3dv/html_table.rb b/lib/sisu/v3dv/html_table.rb
index ba21cac4..87a4c4b6 100644
--- a/lib/sisu/v3dv/html_table.rb
+++ b/lib/sisu/v3dv/html_table.rb
@@ -59,7 +59,7 @@
 module SiSU_HTML_Table
   require_relative 'defaults'                           # defaults.rb
   require_relative 'xhtml_table.rb'                     # xhtml_table.rb
-  class Table_html <SiSU_XHTML_Table::Table_xhtml
+  class TableHTML <SiSU_XHTML_Table::TableXHTML
   end
 end
 __END__
diff --git a/lib/sisu/v3dv/html_tune.rb b/lib/sisu/v3dv/html_tune.rb
index e8c12d6a..0161d5df 100644
--- a/lib/sisu/v3dv/html_tune.rb
+++ b/lib/sisu/v3dv/html_tune.rb
@@ -76,7 +76,7 @@ module SiSU_HTML_Tune
   class Output
     def initialize(data,md)
       @data,@md=data,md
-      @file=SiSU_Env::Info_file.new(@md.fns)
+      @file=SiSU_Env::InfoFile.new(@md.fns)
       @cX=SiSU_Screen::Ansi.new(@md.opt.cmd).cX
     end
     def hard_output
@@ -96,7 +96,7 @@ module SiSU_HTML_Tune
       File.open(@file.marshal.html_tune,'w') {|f| Marshal.dump(@data.to_a,f)}
     end
   end
-  class Clean_html
+  class CleanHTML
     def initialize(html='')
       @html=html
     end
@@ -199,10 +199,10 @@ module SiSU_HTML_Tune
   class Tune
     def initialize(data,md)
       @data,@md=data,md
-      @vz=SiSU_Env::Get_init.instance.skin
-      @env=SiSU_Env::Info_env.new(@md.fns)
-      @sys=SiSU_Env::System_call.new
-      @env=SiSU_Env::Info_env.new(@md.fns)
+      @vz=SiSU_Env::GetInit.instance.skin
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
+      @sys=SiSU_Env::SystemCall.new
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
       @brace_url=SiSU_Viz::Skin.new.url_decoration
     end
     def songsheet
@@ -216,7 +216,7 @@ module SiSU_HTML_Tune
           Output.new(@data,@md).marshal
         end
         tuned=Tune.new(@data,@md).output
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
       end
     end
@@ -364,7 +364,7 @@ module SiSU_HTML_Tune
       dob.obj.gsub!(/^#{Mx[:gl_bullet]}/m,'●&nbsp;&nbsp;')
       dob.obj.gsub!(/#{Mx[:nbsp]}/,'&nbsp;')
       dob.obj.gsub!(/<(p|br)>/,'<\1 />')
-      dob=SiSU_HTML_Tune::Clean_html.new(dob).clean
+      dob=SiSU_HTML_Tune::CleanHTML.new(dob).clean
       dob
     end
     def output
diff --git a/lib/sisu/v3dv/hub.rb b/lib/sisu/v3dv/hub.rb
index 243b2f14..dbcf3c8e 100644
--- a/lib/sisu/v3dv/hub.rb
+++ b/lib/sisu/v3dv/hub.rb
@@ -63,7 +63,7 @@ module SiSU
     include SiSU_Screen
   @@pwd_the=Dir.pwd
   class Op
-    @@env=SiSU_Env::Info_env.new
+    @@env=SiSU_Env::InfoEnv.new
     def initialize(opt,req,message)
       @opt,@req,@message=opt,req,message
       @n_do=0
@@ -129,11 +129,11 @@ module SiSU
       end
       if not @opt.files.empty?
         @opt.files.each_with_index do |fns,i|
-          env=SiSU_Env::Info_env.new(fns)
+          env=SiSU_Env::InfoEnv.new(fns)
           if fns =~ /sisupod(?:\.txz)?|\S+?(?:\.ss[mt]\.txz|\.ssp)$/
             require_relative 'remote'                   # remote.rb #check
             pod_name=if fns =~ /http:\/\/\S+?(?:\.ss[mt]\.txz|\.ssp)$/
-              SiSU_Remote::Remote_download.new(fns).pod.name
+              SiSU_Remote::RemoteDownload.new(fns).pod.name
             else
               re_p=/(\S+?\.ss[mt](?:\.txz)?)$/
               re_p.match(fns).captures.join
@@ -145,7 +145,7 @@ module SiSU
           elsif fns =~ /sisupod(?:\.zip)?|\S+?(?:\.ss[mt]\.zip|\.ssp)$/
             require_relative 'remote'                   # remote.rb #check
             pod_name=if fns =~ /http:\/\/\S+?(?:\.ss[mt]\.zip|\.ssp)$/
-              SiSU_Remote::Remote_download.new(fns).pod.name
+              SiSU_Remote::RemoteDownload.new(fns).pod.name
             else
               re_p=/(\S+?\.ss[mt](?:\.zip)?)$/
               re_p.match(fns).captures.join
@@ -171,7 +171,7 @@ module SiSU
               @@pwd=@opt.pth
             end
             Dir.chdir(@opt.pth) #watch
-            env=SiSU_Env::Info_env.new(fns)
+            env=SiSU_Env::InfoEnv.new(fns)
             if @req !~/(?:urls|remote)$/
               if @opt.cmd.inspect =~/-P/\
               and @req =~ /^po4a$/
@@ -338,7 +338,7 @@ p "here #{__FILE__} #{__LINE__}" if @opt =~/M/
   class Processing
     require 'fileutils'
       include FileUtils
-    @@env=SiSU_Env::Info_env.new
+    @@env=SiSU_Env::InfoEnv.new
     attr_accessor :op
     def initialize(opt)
       @opt=opt
@@ -362,7 +362,7 @@ p "here #{__FILE__} #{__LINE__}" if @opt =~/M/
       and @opt.mod.inspect !~/--(?:sitemaps|query|identify)/ \
       or @opt.mod.inspect =~/--(?:(?:sq)?lite|pg(?:sql)?)/
         @cX=SiSU_Screen::Ansi.new(@opt.cmd).cX
-        flag=SiSU_Env::Info_processing_flag.new
+        flag=SiSU_Env::InfoProcessingFlag.new
         if @opt.cmd =~/[vVM]/                                                  #% version information
           if @opt.cmd =~/V/ \
           and @opt.files.empty?                                                #% environment
@@ -470,7 +470,7 @@ p "here #{__FILE__} #{__LINE__}" if @opt =~/M/
               SiSU_Remote::Get.new(@opt,@get_p).sisupod
             end
           rescue
-            SiSU_Errors::Info_error.new($!,$@,@opt,@fns).error #ok
+            SiSU_Errors::InfoError.new($!,$@,@opt,@fns).error #ok
             @retry_count +=1
             retry unless @retry_count > 1
           ensure
@@ -593,10 +593,10 @@ p "here #{__FILE__} #{__LINE__}" if @opt =~/M/
         end
       elsif @opt.mod.inspect =~/--query/
         require_relative 'sst_identify_markup'          # sst_identify_markup.rb
-        puts SiSU_Markup::Markup_history.new(@opt).query
+        puts SiSU_Markup::MarkupHistory.new(@opt).query
       elsif @opt.mod.inspect =~/--identify/
         require_relative 'sst_identify_markup'          # sst_identify_markup.rb
-        markup_version=SiSU_Markup::Markup_identify.new(@opt).markup_version?
+        markup_version=SiSU_Markup::MarkupIdentify.new(@opt).markup_version?
       elsif  @opt.mod.inspect =~/--about/                  #% help instructions
         if @opt.mod.inspect =~/--about/ \
         and not @opt.what.empty?
diff --git a/lib/sisu/v3dv/manifest.rb b/lib/sisu/v3dv/manifest.rb
index 36988cec..30e645b4 100644
--- a/lib/sisu/v3dv/manifest.rb
+++ b/lib/sisu/v3dv/manifest.rb
@@ -72,15 +72,15 @@ module SiSU_Manifest
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
-      l=SiSU_Env::Standardise_language.new(@opt.lng).language
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
+      l=SiSU_Env::StandardiseLanguage.new(@opt.lng).language
       @doc_language=l[:n]
     end
     def read
       begin
-        @env=SiSU_Env::Info_env.new(@opt.fns)
+        @env=SiSU_Env::InfoEnv.new(@opt.fns)
         @md=SiSU_Param::Parameters.new(@opt).get
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
         xbrowser=@env.program.web_browser
         browser=@env.program.console_web_browser
 #       webserv_url=@env.path.url.output_tell #fix in sysenv
@@ -91,25 +91,25 @@ module SiSU_Manifest
           : SiSU_Screen::Ansi.new(@opt.cmd,'Manifest',"[#{@opt.f_pth[:lng_is]}] #{@opt.fns}").green_title_hi
           SiSU_Screen::Ansi.new(@opt.cmd,"#{browser} #{url_html}").grey_tab if @opt.cmd =~/v/i
         end
-        data=SiSU_HTML::Source::Html_environment.new(@particulars).tuned_file_instructions
-        Output_Info.new(@md).check_output(data)
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        data=SiSU_HTML::Source::HTML_Environment.new(@particulars).tuned_file_instructions
+        OutputInfo.new(@md).check_output(data)
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
     private
-    class Output_Info <Source
+    class OutputInfo <Source
       def initialize(md)
         @manifest={ txt: [], html: [] }
         @md,@fns=md,md.fns
-        @env=SiSU_Env::Info_env.new(@md.fns)
+        @env=SiSU_Env::InfoEnv.new(@md.fns)
         @fnb=@md.fnb
         @base_url="#{@env.url.root}/#{@fnb}"
         @f=SiSU_Env::FileOp.new(@md)
         @base_path=@f.output_path.manifest.dir
-        @@dg ||=SiSU_Env::Info_env.new.digest.type
+        @@dg ||=SiSU_Env::InfoEnv.new.digest.type
         @dg=@@dg
-        l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+        l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
         @language=l[:n]
         @translate=SiSU_Translate::Source.new(@md,@language)
         @brace_url=SiSU_Viz::Skin.new.url_decoration
@@ -135,7 +135,7 @@ module SiSU_Manifest
         @manifest[:html] << %{<tr><th class="left"><p class="norm"><a href="#{rel}/#{file}">#{img}#{id}</a></p></th><td><p class="small"><a href="#{rel}/#{file}">#{file}</a></p><p class="tiny">#{@brace_url.xml_open}<a href="#{url}/#{file}">#{url}/#{file}</a>#{@brace_url.xml_close}</p></td><td class="right"><p class="right">#{kb}</p></td></tr>\n}
       end
       def summarize_sources(id,file,pth,rel,url)
-        sys=SiSU_Env::System_call.new
+        sys=SiSU_Env::SystemCall.new
         dgst =if @dg =~/^sha(?:2|256)$/; sys.sha256("#{pth}/#{file}")
         else                             sys.md5("#{pth}/#{file}")
         end
@@ -731,9 +731,9 @@ WOK
       end
       def check_output(data)
         begin
-          minitoc=SiSU_HTML_MiniToc::Toc_mini.new(@md,data).songsheet.join("\n")
+          minitoc=SiSU_HTML_MiniToc::TocMini.new(@md,data).songsheet.join("\n")
           id,file='',''
-          vz=SiSU_Env::Get_init.instance.skin
+          vz=SiSU_Env::GetInit.instance.skin
           banner_table=if vz.banner_home_button_only !~ /http:\/\/www\.jus\.uio\.no\/sisu/ \
           and vz.banner_home_button_only !~  /sisu\.home\.png/
 <<WOK
@@ -853,7 +853,7 @@ WOK
 </html>
 WOK
           output
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
         end
       end
diff --git a/lib/sisu/v3dv/manpage.rb b/lib/sisu/v3dv/manpage.rb
index 7ce9b1d7..07f97c95 100644
--- a/lib/sisu/v3dv/manpage.rb
+++ b/lib/sisu/v3dv/manpage.rb
@@ -81,7 +81,7 @@ module SiSU_Manpage
     def read
       begin
         @md=SiSU_Param::Parameters.new(@opt).get
-        @env=SiSU_Env::Info_env.new(@opt.fns)
+        @env=SiSU_Env::InfoEnv.new(@opt.fns)
         path=@env.path.output_tell
         tool=(@opt.cmd =~/[MVv]/) \
         ?  "#{@env.program.text_editor} #{@md.file.output_path.manpage.dir}/#{@md.file.base_filename.manpage}"
@@ -93,8 +93,8 @@ module SiSU_Manpage
         SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"#{@md.file.output_path.manpage.dir}/#{@md.file.base_filename.manpage}").flow if @opt.cmd =~/[MV]/
         @dal_array=SiSU_DAL::Source.new(@opt).get # dal file drawn here
         SiSU_Manpage::Source::Scroll.new(@md,@dal_array).songsheet
-        SiSU_Env::Info_skin.new(@md).select #watch
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        SiSU_Env::InfoSkin.new(@md).select #watch
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -107,7 +107,7 @@ module SiSU_Manpage
       def initialize(md,data)
         @md,@data=md,data
         @brace_url=SiSU_Viz::Skin.new.url_decoration
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @tab="\t"
         @br="\n"
         @@dostype='unix endnotes'
@@ -162,8 +162,8 @@ GSUB
         @manpage[:metadata]=Metadata::Summary.new(@md).manpage.metadata
       end
       def manpage_tail
-        SiSU_Env::Info_skin.new(@md).select
-        vz=SiSU_Env::Get_init.instance.skin
+        SiSU_Env::InfoSkin.new(@md).select
+        vz=SiSU_Env::GetInit.instance.skin
         generator="Generated by: #{@md.sisu_version[:project]} #{@md.sisu_version[:version]} of #{@md.sisu_version[:date_stamp]} (#{@md.sisu_version[:date]})"  if @md.sisu_version[:version]
         lastdone="Last Generated on: #{Time.now}"
         rubyv="Ruby version: #{@md.ruby_version}"
@@ -250,7 +250,7 @@ WOK
         @@endnotes[:para]=[]
       end
       def markup(data)                                                       # Used for major markup instructions
-        dir=SiSU_Env::Info_env.new(@md.fns)
+        dir=SiSU_Env::InfoEnv.new(@md.fns)
         @data_mod,@endnotes,@level,@cont,@copen,@manpage_contents_close=Array.new(6){[]}
         (0..6).each { |x| @cont[x]=@level[x]=false }
         (4..6).each { |x| @manpage_contents_close[x]='' }
@@ -337,9 +337,9 @@ WOK
           if dob.obj !~/(^#{Rx[:meta]}|#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
             if dob.obj =~@regx #/.+?<~\d+;\w\d+;\w\d+>.*/ #watch change
               paranum=dob.obj[@regx,3]
-              @p_num=SiSU_ManpageFormat::Paragraph_number.new(paranum)
+              @p_num=SiSU_ManpageFormat::ParagraphNumber.new(paranum)
             end
-            x=SiSU_ManpageFormat::Format_text_object.new(@md,dob)
+            x=SiSU_ManpageFormat::FormatTextObject.new(@md,dob)
             if dob.is=='heading'
               manpage_structure(dob)
               dob.obj=case dob.ln
@@ -386,11 +386,11 @@ WOK
         elsif defined? @md.date.published \
         and @md.date.published
           @md.date.published
-        else SiSU_Env::Info_date.new.year #date missing decide on action
+        else SiSU_Env::InfoDate.new.year #date missing decide on action
         end
         manpage_name,manpage_synopsis='',''
         manpg={}
-        proj=SiSU_Env::Info_version.instance.get_version
+        proj=SiSU_Env::InfoVersion.instance.get_version
         manpage[:open] = %{.TH "#{@md.fnb}" "#{@md.make.manpage['section']}" "#{date}" "#{proj[:version]}" "#{@md.title.main}"#{@md.make.manpage['name']}#{@md.make.manpage['synopsis']}}
         content << manpage[:open]
         content << manpage[:head]
diff --git a/lib/sisu/v3dv/manpage_format.rb b/lib/sisu/v3dv/manpage_format.rb
index 6fdba89f..7f5b5dad 100644
--- a/lib/sisu/v3dv/manpage_format.rb
+++ b/lib/sisu/v3dv/manpage_format.rb
@@ -60,7 +60,7 @@ module SiSU_ManpageFormat
   require_relative 'param'                              # param.rb
     include SiSU_Param
   include SiSU_Viz
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(paranum)
       @paranum=/(\d+)/m.match(paranum)[1]
     end
@@ -74,7 +74,7 @@ module SiSU_ManpageFormat
       @paranum.gsub(/(\d+)/,'<a href="#\1">')
     end
   end
-  class Format_text_object
+  class FormatTextObject
     def initialize(md,dob)
       @md,@dob=md,dob
 if @dob.class==Hash
@@ -84,7 +84,7 @@ elsif @dob.class==String
 end
       rgx=/#{Mx[:en_a_o]}[\d*+]+\s+(.+?)#{Mx[:en_a_c]}/
       @dob.obj.gsub!(rgx,'\1') if @dob.obj =~rgx
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def scr_endnote_body
       "<endnote>#{@dob.obj}</endnote> "
diff --git a/lib/sisu/v3dv/modify.rb b/lib/sisu/v3dv/modify.rb
index 73e7ac2a..743c9ccc 100644
--- a/lib/sisu/v3dv/modify.rb
+++ b/lib/sisu/v3dv/modify.rb
@@ -89,7 +89,7 @@ module SiSU_Modify
        #Extracted.new.modify.classes,
        #modify.dates,
        #modify.modules,
-       modify.classes,
+        modify.classes,
        #modify.misc,
       ]
     end
@@ -219,118 +219,118 @@ WOK
       def classes
         [
 # classes incorrectly named
-          [/SiSU_CGI_common/,                                                  'CGI_Common'],
-          [/SiSU_Config/,                                                      'ConfigSite'],
-          [/SiSU_file/,                                                        'FileOp'],
-          [/SiSU_search_pgsql/,                                                'SearchPgSQL'],
-          [/SiSU_search_sqlite/,                                               'SearchSQLite'],
-          [/SiSU_search/,                                                      'SearchSQL'],
-          [/SiSU_SQL/,                                                         'SQL'],
+#         [/SiSU_CGI_common/,                                                  'CGI_Common'],
+#         [/SiSU_Config/,                                                      'ConfigSite'],
+#         [/SiSU_file/,                                                        'FileOp'],
+#         [/SiSU_search_pgsql/,                                                'SearchPgSQL'],
+#         [/SiSU_search_sqlite/,                                               'SearchSQLite'],
+#         [/SiSU_search/,                                                      'SearchSQL'],
+#         [/SiSU_SQL/,                                                         'SQL'],
 # classes
-#         [/Bare_urls/,                                                        'BareUrls'],
-#         [/Book_index/,                                                       'BookIndex'],
-#         [/Character_encoding/,                                               'CharacterEncoding'],
-#         [/Clean_html/,                                                       'CleanHTML'],
-#         [/Clean_output/,                                                     'CleanOutput'],
-#         [/Clean_xhtml/,                                                      'CleanXHTML'],
-#         [/Column_size/,                                                      'ColumnSize'],
-#         [/Combined_singleton/,                                               'CombinedSingleton'],
-#         [/Composite_file_list/,                                              'CompositeFileList'],
-#         [/Convert_markup/,                                                   'ConvertMarkup'],
-#         [/Create_file/,                                                      'CreateFile'],
-#         [/Create_site/,                                                      'CreateSite'],
-#         [/Create_system_link/,                                               'CreateSystemLink'],
-#         [/CSS_default/,                                                      'CSS_Default'],
-#         [/CSS_Format_generic/,                                               'CSS_FormatGeneric'],
-#         [/CSS_select/,                                                       'CSS_Select'],
-#         [/CSS_stylesheet/,                                                   'CSS_Stylesheet'],
-#         [/Css/,                                                              'CSS'],
-#         [/Dbi_search_statement/,                                             'DBI_SearchStatement'],
-#         [/Dbi_search_string/,                                                'DBI_SearchString'],
-#         [/Doc_title/,                                                        'DocTitle'],
-#         [/Env_call/,                                                         'EnvCall'],
-#         [/Epub_output/,                                                      'EPUB_Output'],
-#         [/File_map/,                                                         'FileMap'],
-#         [/Format_head/,                                                      'FormatHead'],
-#         [/Format_seg/,                                                       'FormatSeg'],
-#         [/Format_obj_break/,                                                 'FormatObjBreak'],
-#         [/Format_scroll/,                                                    'FormatScroll'],
-#         [/Format_seg/,                                                       'FormatSeg'],
-#         [/Format_str/,                                                       'FormatStr'],
-#         [/Format_text_object/,                                               'FormatTextObject'],
-#         [/Format_toc/,                                                       'FormatToc'],
-#         [/Get_init/,                                                         'GetInit'],
-#         [/Head_information/,                                                 'HeadInformation'],
-#         [/Header_scan/,                                                      'HeaderScan'],
-#         [/Character_encoding/,                                               'CharacterEncoding'],
-#         [/Head_scroll/,                                                      'HeadScroll'],
-#         [/Head_seg/,                                                         'HeadSeg'],
-#         [/Head_toc/,                                                         'HeadToc'],
-#         [/Html_environment/,                                                 'HTML_Environment'],
-#         [/Info_date/,                                                        'InfoDate'],
-#         [/Info_db/,                                                          'InfoDb'],
-#         [/Info_env/  ,                                                       'InfoEnv'],
-#         [/Info_error/,                                                       'InfoError'],
-#         [/Info_file/,                                                        'InfoFile'],
-#         [/Info_port/,                                                        'InfoPort'],
-#         [/Info_processing_flag/,                                             'InfoProcessingFlag'],
-#         [/Info_program/,                                                     'InfoProgram'],
-#         [/Info_remote_host/,                                                 'InfoRemoteHost'],
-#         [/Info_remote/,                                                      'InfoRemote'],
-#         [/Info_settings/,                                                    'InfoSettings'],
-#         [/Info_skin/,                                                        'InfoSkin'],
-#         [/Info_system/,                                                      'InfoSystem'],
-#         [/Info_version/,                                                     'InfoVersion'],
-#         [/LaTeX_to_pdf/,                                                     'LaTeXtoPdf'],
-#         [/LaTeX_create/,                                                     'LaTeXcreate'],
-#         [/Links_guide/,                                                      'LinksGuide'],
-#         [/Load_documents/,                                                   'LoadDocuments'],
-#         [/Load_endnotes/,                                                    'LoadEndnotes'],
-#         [/Load_metadata/,                                                    'LoadMetadata'],
-#         [/Load_urls/,                                                        'LoadUrls'],
-#         [/Markup_identify/,                                                  'MarkupIdentify'],
-#         [/Markup_inform/,                                                    'MarkupInform'],
-#         [/Markup_history/,                                                   'MarkupHistory'],
-#         [/Md_default/,                                                       'MdDefault'],
-#         [/Modified_text_plus_Hash_digest/,                                   'ModifiedTextPlusHashDigest'],
-#         [/Object_block_txt/,                                                 'ObjectBlockTxt'],
-#         [/Object_comment/,                                                   'ObjectComment'],
-#         [/Object_digest/,                                                    'ObjectDigest'],
-#         [/Object_heading/,                                                   'ObjectHeading'],
-#         [/Object_image/,                                                     'ObjectImage'],
-#         [/Object_layout/,                                                    'ObjectLayout'],
-#         [/Object_metadata/,                                                  'ObjectMetadata'],
-#         [/Object_meta/,                                                      'ObjectMeta'],
-#         [/Object_para/,                                                      'ObjectPara'],
-#         [/Object_structure/,                                                 'ObjectStructure'],
-#         [/Object_table/,                                                     'ObjectTable'],
-#         [/ODT_head_1_2/,                                                     'ODT_Head_1_2'],
-#         [/Output_index/,                                                     'OutputIndex'],
-#         [/Output_Info/,                                                      'OutputInfo'],
-#         [/Output_urls/,                                                      'OutputUrls'],
-#         [/Paragraph_number/,                                                 'ParagraphNumber'],
-#         [/Pot_number/,                                                       'PotNumber'],
-#         [/Remote_download/,                                                  'RemoteDownload'],
-#         [/Remote_image/,                                                     'RemoteImage'],
-#         [/Scroll_head_and_segtoc/,                                           'ScrollHeadAndSegToc'],
-#         [/Scroll_output/,                                                    'ScrollOutput'],
-#         [/Search_request/,                                                   'SearchRequest'],
-#         [/Seg_output/,                                                       'SegOutput'],
-#         [/Set_CF/,                                                           'SetCF'],
-#         [/Special_characters/,                                               'SpecialCharacters'],
-#         [/Split_text_object/,                                                'SplitTextObject'],
-#         [/Standardise_language/,                                             'StandardiseLanguage'],
-#         [/System_call/,                                                      'SystemCall'],
-#         [/Table_html/,                                                       'TableHTML'],
-#         [/Table_xhtml/,                                                      'TableXHTML'],
-#         [/Table_xml_exp/,                                                    'TableXMLexp'],
-#         [/Table_xml/,                                                        'TableXML'],
-#         [/TeX_metadata/,                                                     'TeX_Metadata'],
-#         [/Texinfo_make/,                                                     'TeXinfoMake'],
-#         [/Texinfo_txt/,                                                      'TeXinfoTxt'],
-#         [/Toc_mini/,                                                         'TocMini'],
-#         [/Use_TeX/,                                                          'UseTeX'],
-#         [/XHtml_environment/,                                                'XHTML_Environment'],
+          [/Bare_urls/,                                                        'BareUrls'],
+          [/Book_index/,                                                       'BookIndex'],
+          [/Character_encoding/,                                               'CharacterEncoding'],
+          [/Clean_html/,                                                       'CleanHTML'],
+          [/Clean_output/,                                                     'CleanOutput'],
+          [/Clean_xhtml/,                                                      'CleanXHTML'],
+          [/Column_size/,                                                      'ColumnSize'],
+          [/Combined_singleton/,                                               'CombinedSingleton'],
+          [/Composite_file_list/,                                              'CompositeFileList'],
+          [/Convert_markup/,                                                   'ConvertMarkup'],
+          [/Create_file/,                                                      'CreateFile'],
+          [/Create_site/,                                                      'CreateSite'],
+          [/Create_system_link/,                                               'CreateSystemLink'],
+          [/CSS_default/,                                                      'CSS_Default'],
+          [/CSS_Format_generic/,                                               'CSS_FormatGeneric'],
+          [/CSS_select/,                                                       'CSS_Select'],
+          [/CSS_stylesheet/,                                                   'CSS_Stylesheet'],
+          [/Css/,                                                              'CSS'],
+          [/Dbi_search_statement/,                                             'DBI_SearchStatement'],
+          [/Dbi_search_string/,                                                'DBI_SearchString'],
+          [/Doc_title/,                                                        'DocTitle'],
+          [/Env_call/,                                                         'EnvCall'],
+          [/Epub_output/,                                                      'EPUB_Output'],
+          [/File_map/,                                                         'FileMap'],
+          [/Format_head/,                                                      'FormatHead'],
+          [/Format_seg/,                                                       'FormatSeg'],
+          [/Format_obj_break/,                                                 'FormatObjBreak'],
+          [/Format_scroll/,                                                    'FormatScroll'],
+          [/Format_seg/,                                                       'FormatSeg'],
+          [/Format_str/,                                                       'FormatStr'],
+          [/Format_text_object/,                                               'FormatTextObject'],
+          [/Format_toc/,                                                       'FormatToc'],
+          [/Get_init/,                                                         'GetInit'],
+          [/Head_information/,                                                 'HeadInformation'],
+          [/Header_scan/,                                                      'HeaderScan'],
+          [/Character_encoding/,                                               'CharacterEncoding'],
+          [/Head_scroll/,                                                      'HeadScroll'],
+          [/Head_seg/,                                                         'HeadSeg'],
+          [/Head_toc/,                                                         'HeadToc'],
+          [/Html_environment/,                                                 'HTML_Environment'],
+          [/Info_date/,                                                        'InfoDate'],
+          [/Info_db/,                                                          'InfoDb'],
+          [/Info_env/  ,                                                       'InfoEnv'],
+          [/Info_error/,                                                       'InfoError'],
+          [/Info_file/,                                                        'InfoFile'],
+          [/Info_port/,                                                        'InfoPort'],
+          [/Info_processing_flag/,                                             'InfoProcessingFlag'],
+          [/Info_program/,                                                     'InfoProgram'],
+          [/Info_remote_host/,                                                 'InfoRemoteHost'],
+          [/Info_remote/,                                                      'InfoRemote'],
+          [/Info_settings/,                                                    'InfoSettings'],
+          [/Info_skin/,                                                        'InfoSkin'],
+          [/Info_system/,                                                      'InfoSystem'],
+          [/Info_version/,                                                     'InfoVersion'],
+          [/LaTeX_to_pdf/,                                                     'LaTeXtoPdf'],
+          [/LaTeX_create/,                                                     'LaTeXcreate'],
+          [/Links_guide/,                                                      'LinksGuide'],
+          [/Load_documents/,                                                   'LoadDocuments'],
+          [/Load_endnotes/,                                                    'LoadEndnotes'],
+          [/Load_metadata/,                                                    'LoadMetadata'],
+          [/Load_urls/,                                                        'LoadUrls'],
+          [/Markup_identify/,                                                  'MarkupIdentify'],
+          [/Markup_inform/,                                                    'MarkupInform'],
+          [/Markup_history/,                                                   'MarkupHistory'],
+          [/Md_default/,                                                       'MdDefault'],
+          [/Modified_text_plus_Hash_digest/,                                   'ModifiedTextPlusHashDigest'],
+          [/Object_block_txt/,                                                 'ObjectBlockTxt'],
+          [/Object_comment/,                                                   'ObjectComment'],
+          [/Object_digest/,                                                    'ObjectDigest'],
+          [/Object_heading/,                                                   'ObjectHeading'],
+          [/Object_image/,                                                     'ObjectImage'],
+          [/Object_layout/,                                                    'ObjectLayout'],
+          [/Object_metadata/,                                                  'ObjectMetadata'],
+          [/Object_meta/,                                                      'ObjectMeta'],
+          [/Object_para/,                                                      'ObjectPara'],
+          [/Object_structure/,                                                 'ObjectStructure'],
+          [/Object_table/,                                                     'ObjectTable'],
+          [/ODT_head_1_2/,                                                     'ODT_Head_1_2'],
+          [/Output_index/,                                                     'OutputIndex'],
+          [/Output_Info/,                                                      'OutputInfo'],
+          [/Output_urls/,                                                      'OutputUrls'],
+          [/Paragraph_number/,                                                 'ParagraphNumber'],
+          [/Pot_number/,                                                       'PotNumber'],
+          [/Remote_download/,                                                  'RemoteDownload'],
+          [/Remote_image/,                                                     'RemoteImage'],
+          [/Scroll_head_and_segtoc/,                                           'ScrollHeadAndSegToc'],
+          [/Scroll_output/,                                                    'ScrollOutput'],
+          [/Search_request/,                                                   'SearchRequest'],
+          [/Seg_output/,                                                       'SegOutput'],
+          [/Set_CF/,                                                           'SetCF'],
+          [/Special_characters/,                                               'SpecialCharacters'],
+          [/Split_text_object/,                                                'SplitTextObject'],
+          [/Standardise_language/,                                             'StandardiseLanguage'],
+          [/System_call/,                                                      'SystemCall'],
+          [/Table_html/,                                                       'TableHTML'],
+          [/Table_xhtml/,                                                      'TableXHTML'],
+          [/Table_xml_exp/,                                                    'TableXMLexp'],
+          [/Table_xml/,                                                        'TableXML'],
+          [/TeX_metadata/,                                                     'TeX_Metadata'],
+          [/Texinfo_make/,                                                     'TeXinfoMake'],
+          [/Texinfo_txt/,                                                      'TeXinfoTxt'],
+          [/Toc_mini/,                                                         'TocMini'],
+          [/Use_TeX/,                                                          'UseTeX'],
+          [/XHtml_environment/,                                                'XHTML_Environment'],
         ]
       end
       self
diff --git a/lib/sisu/v3dv/odf.rb b/lib/sisu/v3dv/odf.rb
index 85a9a390..2f0cf38e 100644
--- a/lib/sisu/v3dv/odf.rb
+++ b/lib/sisu/v3dv/odf.rb
@@ -73,7 +73,7 @@ module SiSU_ODF
     require 'find'
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
       @@endnotes_para=[]
     end
     def read
@@ -89,8 +89,8 @@ module SiSU_ODF
           SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"file://#{@md.file.output_path.odt.dir}/#{@md.file.base_filename.odt}").flow if @opt.cmd =~/[MV]/
         end
         SiSU_ODF::Source::Scroll.new(@particulars).songsheet
-        SiSU_Env::Info_skin.new(@md).select
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        SiSU_Env::InfoSkin.new(@md).select
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -104,7 +104,7 @@ module SiSU_ODF
       @@fns=nil
       def initialize(particulars)
         @md,@env,@dal_array=particulars.md,particulars.env,particulars.dal_array
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @tab="\t"
         @brace_url=SiSU_Viz::Skin.new.url_decoration
         @br=(@md.opt.cmd =~/M/) ? '' : ''
@@ -246,7 +246,7 @@ module SiSU_ODF
       def text_link_odf(txt,url,trail)
         txt.gsub!(/(\\\+)/,'+') #this is convoluted, and risky :-(
         url.gsub!(/(\\\+)/,'+') #this is convoluted, and risky :-(
-        map_nametags=SiSU_Particulars::Combined_singleton.instance.get_map_nametags(@md).nametags_map
+        map_nametags=SiSU_Particulars::CombinedSingleton.instance.get_map_nametags(@md).nametags_map
         t=case url
         when /^https?:/
           %{<text:a xlink:type="simple" xlink:href="#{url}">#{txt.strip}</text:a>#{trail}}
@@ -458,7 +458,7 @@ module SiSU_ODF
       end
       def obj_break(dob)
         if dob.is =='break'
-          br=SiSU_ODF_Format::Format_obj_break.new(@md,dob)
+          br=SiSU_ODF_Format::FormatObjBreak.new(@md,dob)
           if dob.obj==Mx[:br_page] \
           or dob.obj==Mx[:br_page_new]
             dob=br.br_page
@@ -482,7 +482,7 @@ module SiSU_ODF
           if dob.is !~/(^#{Rx[:meta]}|#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
             if defined? dob.ocn \
             and not dob.ocn.nil?
-              p_num=SiSU_ODF_Format::Paragraph_number.new(dob.ocn).display
+              p_num=SiSU_ODF_Format::ParagraphNumber.new(dob.ocn).display
             end
           end
         end
@@ -511,7 +511,7 @@ module SiSU_ODF
       end
       def markup(data)                                                                 # Used for major markup instructions
         safe_characters=/[^a-zA-Z0-9}{\/?,."';:)(><\-_&!@%~#\]\[*=$| \n+`#{Mx[:tc_p]}]/u
-        dir=SiSU_Env::Info_env.new(@md.fns)
+        dir=SiSU_Env::InfoEnv.new(@md.fns)
         dir.path.odt_bld
         @data_mod,@endnotes,@level,@cont,@copen,@odf_contents_close=Array.new(6){[]}
         @rcdc=false
@@ -598,7 +598,7 @@ module SiSU_ODF
           and (dob.obj =~/~metadata/ or dob =~/#{Mx[:lv_o]}1:meta#{Mx[:lv_x]}\s*Document Information/) #fix Mx[:lv_o]
           if dob.is !~/(^#{Rx[:meta]}|#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
             if defined? dob.ocn and dob.ocn =~/\d+/
-              @p_num=SiSU_ODF_Format::Paragraph_number.new(dob.ocn)
+              @p_num=SiSU_ODF_Format::ParagraphNumber.new(dob.ocn)
             end
             if dob.is=~/heading|para|group|verse|code|table|break/ # extend, include other types
               odf_structure(@md,dob)
@@ -686,7 +686,7 @@ WOK
       def odf                                                           #%odf output
         env=SiSU_Env::FileOp.new(@md)
         env.mkdir
-        header=SiSU_ODF_Format::ODT_head_1_2.new(@md)
+        header=SiSU_ODF_Format::ODT_Head_1_2.new(@md)
         filename="#{@env.processing_path.odt}/manifest.rdf"
         od=File.new(filename,'w+')
         od << header.manifest_rdf
diff --git a/lib/sisu/v3dv/odf_format.rb b/lib/sisu/v3dv/odf_format.rb
index f15d6386..9167fc5e 100644
--- a/lib/sisu/v3dv/odf_format.rb
+++ b/lib/sisu/v3dv/odf_format.rb
@@ -60,7 +60,7 @@ module SiSU_ODF_Format
   require_relative 'param'                              # param.rb
     include SiSU_Param
   include SiSU_Viz
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(paranum)
       @paranum=/(\d+)/m.match(paranum.to_s)[1]
     end
@@ -74,7 +74,7 @@ module SiSU_ODF_Format
       @paranum.gsub(/(\d+)/,'<a href="#\1">')
     end
   end
-  class Format_text_object
+  class FormatTextObject
     def initialize(md,t_o)
       @md,@t_o=md,t_o
       if t_o.class==Hash
@@ -85,7 +85,7 @@ module SiSU_ODF_Format
       end
       rgx=/#{Mx[:en_a_o]}\d+\s+(.+?)#{Mx[:en_a_c]}/
       @txt.gsub!(rgx,'\1') if @txt =~rgx
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def scr_endnote_body
       "<endnote>#{@txt}</endnote> "
@@ -110,7 +110,7 @@ module SiSU_ODF_Format
     def initialize(md,dob,p_num)
       @md,@dob,@p_num=md,dob,p_num
       @txt=dob.obj
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
       if @md.fns != @@fns
         @@table_counter=0
         @@fns=@md.fns
@@ -200,7 +200,7 @@ module SiSU_ODF_Format
       @dob
     end
   end
-  class ODT_head_1_2
+  class ODT_Head_1_2
     def initialize(md)
       @md=md
       @generator="#{@md.sisu_version[:project]} #{@md.sisu_version[:version]} #{@md.sisu_version[:date_stamp]} (#{@md.sisu_version[:date]})"
@@ -587,7 +587,7 @@ WOK
       x.strip!
     end
   end
-  class Format_obj_break
+  class FormatObjBreak
     def initialize(md,t_o)
       @md,@t_o=md,t_o
     end
diff --git a/lib/sisu/v3dv/options.rb b/lib/sisu/v3dv/options.rb
index 7a5c8a0b..23f45136 100644
--- a/lib/sisu/v3dv/options.rb
+++ b/lib/sisu/v3dv/options.rb
@@ -66,9 +66,9 @@ module SiSU_Commandline
     def initialize(a)
       @cmd,@f_pth,@pth,@fns,@fnb,@fnc,@fncb,@what,@lng,@lng_base,@base_path,@base_stub,@sub_location='','','','','','','','','','','','',''
       @f_pths,@files,@paths,@mod,@act=Array.new(5){[]}
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
       @lng_base=@env.language_default_set
-      @dir_structure_by=SiSU_Env::Env_call.new.output_dir_structure.by?
+      @dir_structure_by=SiSU_Env::EnvCall.new.output_dir_structure.by?
       @@base_path ||=Dir.pwd
       @base_path=@@base_path
       r=Px[:lng_lst].join('|')
@@ -182,7 +182,7 @@ module SiSU_Commandline
         if @files.length > 0 \
         and @cmd.empty? \
         and @mod.length==0 #% if no other action called on filename given, default is sisu --v3 -0 [filename(s)] configured as flag default
-          shortcut=SiSU_Env::Info_processing_flag.new
+          shortcut=SiSU_Env::InfoProcessingFlag.new
           @mod=['--v3']
           @cmd=shortcut.cf_0 + 'm'
         end
@@ -304,7 +304,7 @@ module SiSU_Commandline
       { cmd: c, mod: m, what: w, paths: pth, files: f, f_pths: f_pths, lng: lng, lngs: lngs }
     end
     def expand_numeric_shortcuts(a)
-      shortcut=SiSU_Env::Info_processing_flag.new
+      shortcut=SiSU_Env::InfoProcessingFlag.new
       s=''
       a.each do |x|
         y=case x
diff --git a/lib/sisu/v3dv/param.rb b/lib/sisu/v3dv/param.rb
index 78a5f975..d8c65e8c 100644
--- a/lib/sisu/v3dv/param.rb
+++ b/lib/sisu/v3dv/param.rb
@@ -64,7 +64,7 @@ module SiSU_Param
   require_relative 'param_identify_markup'              # param_identify_markup.rb
   require_relative 'help'                               # help.rb
     include SiSU_Help
-  @@date=SiSU_Env::Info_date.new
+  @@date=SiSU_Env::InfoDate.new
   @@proc=@@filename_txt=@@filename_texinfo=@@filename_lout_portrait=@@filename_lout_landscape=@@filename_html_scroll=@@filename_html_index=@@filename_html_segtoc=@@filename_semantic=@@filename_rss=@@newfile=@@drr=nil
   @doc={ initialise: nil, markup: '', lnks: '', stmp: '', req: {} }
   @@yaml=@@yamladdr=nil
@@ -83,7 +83,7 @@ module SiSU_Param
       else opt.fns.gsub(/\.ssm$/,'.ssm.sst')
       end
       Instantiate.new.param_instantiate
-      @env=SiSU_Env::Info_env.new(@fns)
+      @env=SiSU_Env::InfoEnv.new(@fns)
       @pstorefile="#{@env.processing_path.dal}/#{@fns}.pstore"
     end
     def get
@@ -126,7 +126,7 @@ module SiSU_Param
       @@md.opt=@opt
       @@md
     end
-    class Md_default
+    class MdDefault
       def rights(author,date)
         @author,@date=author,date
         def all
@@ -970,7 +970,7 @@ module SiSU_Param
         @rgx_audio=/\{\s*(\S+?\.(?:mp3|ogg))/
         @rgx_mm=/\{\s*(\S+?\.(?:ogg|mpeg))/ #expand and distinguish ogg
         begin
-        rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@fns).error
         ensure
         end
       end
@@ -989,9 +989,9 @@ module SiSU_Param
         @user,@home,@hostname,@pwd=ENV['USER'],ENV['HOME'],ENV['HOSTNAME'],ENV['PWD']
         @programs,@wc,@language,@language_original={},{},{},{}
         @en={ sum: 0, mark: 0, note: 0, mismatch: 0 }
-        @prog=SiSU_Env::Info_settings.new
-        @sys=SiSU_Env::System_call.new
-        @env=SiSU_Env::Info_env.new(@fns) #watch
+        @prog=SiSU_Env::InfoSettings.new
+        @sys=SiSU_Env::SystemCall.new
+        @env=SiSU_Env::InfoEnv.new(@fns) #watch
         puts 'system locale: ' + @sys.locale if @opt.cmd =~/[MV]/
         if @prog.wc \
         and @sys.wc
@@ -1009,7 +1009,7 @@ module SiSU_Param
         @locale=@sys.locale
         @file_encoding=@sys.file_encoding(fns,@opt.cmd)
         # programs set here for things that affect output appearance only
-        @programs[:pdf]=SiSU_Env::System_call.new.program_found?('pdflatex')
+        @programs[:pdf]=SiSU_Env::SystemCall.new.program_found?('pdflatex')
         if @opt.cmd =~/P/ #if @env.multilingual?
           m=/((.+?)(?:\~\w\w(?:_\w\w)?)?)\.((?:-|ssm\.)?sst|ssm|ssi)$/ #watch added match for sss
           @fnn,@fnb,@fnt=@fns[m,1],@fns[m,2],@fns[m,3]
@@ -1036,13 +1036,13 @@ module SiSU_Param
         @flag_endnotes,@flag_auto_endnotes,@flag_separate_endnotes=false,false,false
         @flag_separate_endnotes_make=true
         regx_date=/^\d{4}(?:-(?:[0][0-9]|1[0-2])(-(?:[0-2][0-9]|3[01]))?)?$/
-        ver=SiSU_Env::Info_version.instance
+        ver=SiSU_Env::InfoVersion.instance
         @sisu_version=ver.get_version
         @ruby_version=ver.rbversion
         @generated=Time.now
         fns_array=@data.dup
         skip unless fns_array                                                    # consider
-        @markup_version=SiSU_MarkupType::Markup_identify.new(fns_array,@opt).markup_version?                          #% determine markup version
+        @markup_version=SiSU_MarkupType::MarkupIdentify.new(fns_array,@opt).markup_version?                          #% determine markup version
         if fns_array[0] =~ /^(?:%\s+)?(?:SiSU\s+(?:master\s+)?[\d.]*|sisu-[\d.]+)$/                                    #check markup and markup version
           if fns_array[0] =~ /^(?:%\s+)?(?:SiSU\s+(?:master\s+)?|sisu-)(?:(?:[0-9]+?)(?:\.[0-9]+?)(?:\.[0-9]+))?$/         #check markup and markup version
             @markup_version_declared=fns_array[0].match(/^(?:%\s+)?(?:SiSU\s+(?:master\s+)?|sisu-)([\d.]+)$/)[1]
@@ -1296,10 +1296,10 @@ module SiSU_Param
           and @creator.author \
           and defined? @date.published \
           and @date.published
-            @rights=Md_default.new.rights(@creator.author,@date.published)
+            @rights=MdDefault.new.rights(@creator.author,@date.published)
           elsif defined? @creator.author \
           and @creator.author
-            @rights=Md_default.new.rights("[#{@creator.author}]",'')
+            @rights=MdDefault.new.rights("[#{@creator.author}]",'')
           end
         end
         if defined? @classify.topic_register \
@@ -1356,8 +1356,8 @@ module SiSU_Param
         @filesize=(File.size(fn)).to_s
         if @sys.openssl !=false
           skin=@doc_skin \
-          ? (SiSU_Env::Info_skin.new(@opt,@doc_skin).select)
-          : SiSU_Env::Info_skin.new(@opt).select
+          ? (SiSU_Env::InfoSkin.new(@opt,@doc_skin).select)
+          : SiSU_Env::InfoSkin.new(@opt).select
           @dgst,@dgst_skin=[],[]
           if @env.digest.type =~/sha256/
             dgst=@sys.sha256(@env.source_file_with_path)
@@ -1372,7 +1372,7 @@ module SiSU_Param
           end
         end
         @publisher ||= "#@@publisher (this copy)"
-        fn_set_lang=SiSU_Env::Standardise_language.new(@opt.lng).language
+        fn_set_lang=SiSU_Env::StandardiseLanguage.new(@opt.lng).language
         unless @language[:code] \
         and @language[:name]
           lang=@env.i18n.language #default language settings for directory by name, or in sysrc.yml
@@ -1386,7 +1386,7 @@ module SiSU_Param
         @fnl=@env.i18n.lang_filename(fn_set_lang[:c])
 #fix
 #       @flv.each do |l|
-#         lang=SiSU_Env::Standardise_language.new.file_to_language(l)
+#         lang=SiSU_Env::StandardiseLanguage.new.file_to_language(l)
 #         c={ a: '', b: '', c: '' }
 #         if @fnl[:pre] =~/\S/;     c[:a]="#{lang[:c]}."
 #         elsif @fnl[:mid] =~/\S/;  c[:b]=".#{lang[:c]}"
@@ -1395,7 +1395,7 @@ module SiSU_Param
 #         @lang << [lang[:n],"#{c[:a]}sisu_manifest#{c[:b]}.html#{c[:c]}"]
 #       end if @flv
         @lang.uniq!
-        @fn=SiSU_Env::Env_call.new(@fns).lang(fn_set_lang[:c])
+        @fn=SiSU_Env::EnvCall.new(@fns).lang(fn_set_lang[:c])
         @identifier="#{@env.url.root}/#{@fnb}/#{@fn[:toc]}" #DC note constructed dc identifier
         if @en[:note] > 0 \
         and @en[:sum] > 0
@@ -1520,7 +1520,7 @@ module SiSU_Param
   end
   class Instantiate
     def param_instantiate
-      @@date=SiSU_Env::Info_date.new
+      @@date=SiSU_Env::InfoDate.new
       @@proc=@@filename_txt=@@filename_texinfo=@@filename_lout_portrait=@@filename_lout_landscape=@@filename_html_scroll=@@filename_html_index=@@filename_html_segtoc=@@filename_semantic=@@filename_rss=@@newfile=@@drr=nil
       @doc={
        initialise: nil,
diff --git a/lib/sisu/v3dv/param_identify_markup.rb b/lib/sisu/v3dv/param_identify_markup.rb
index 6737b1c9..c8c1fe8b 100644
--- a/lib/sisu/v3dv/param_identify_markup.rb
+++ b/lib/sisu/v3dv/param_identify_markup.rb
@@ -59,7 +59,7 @@
 
 =end
 module SiSU_MarkupType
-  class Markup_identify
+  class MarkupIdentify
     @@version={}
     @@fns,@@version[:determined],@@version[:declared],@@declared_doc_type='','','','[text?]'
     attr_accessor :version,:declared_doc_type
diff --git a/lib/sisu/v3dv/particulars.rb b/lib/sisu/v3dv/particulars.rb
index cd4e29d5..7c599624 100644
--- a/lib/sisu/v3dv/particulars.rb
+++ b/lib/sisu/v3dv/particulars.rb
@@ -64,7 +64,7 @@ module SiSU_Particulars
   require_relative 'param'                              # param.rb
     include SiSU_Param
   require_relative 'dal'                                # dal.rb
-  class Combined_singleton
+  class CombinedSingleton
     include Singleton
     def get_all(opt)
       @opt=opt
@@ -132,15 +132,15 @@ module SiSU_Particulars
       begin
         @md=SiSU_Param::Parameters.new(@opt).get
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     attr_accessor :opt,:env,:file
     def set_env
       begin
-        @env=SiSU_Env::Info_env.new(@opt.fns)
+        @env=SiSU_Env::InfoEnv.new(@opt.fns)
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     def set_file
@@ -148,7 +148,7 @@ module SiSU_Particulars
         set_md unless @md
         @file=SiSU_Env::FileOp.new(@md)
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     attr_accessor :opt,:dal_array
@@ -156,35 +156,35 @@ module SiSU_Particulars
       begin
         @dal_array=@dal_array=SiSU_DAL::Source.new(@md).get
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     def set_sst_idx
       begin
         @sst_idx=SiSU_DAL::Source.new(@md).get_idx_sst
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     def set_tex_idx
       begin
         @tex_idx=SiSU_DAL::Source.new(@md).get_idx_tex
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     def set_html_idx
       begin
         @html_idx=SiSU_DAL::Source.new(@md).get_idx_html
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     def set_xhtml_idx
       begin
         @xhtml_idx=SiSU_DAL::Source.new(@md).get_idx_xhtml
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     attr_accessor :nametags_map
@@ -193,7 +193,7 @@ module SiSU_Particulars
         opt=@md ? @md : @opt
         @nametags_map=SiSU_DAL::Source.new(opt).get_map_nametags
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
     attr_accessor :ocn_htmlseg_map
@@ -201,7 +201,7 @@ module SiSU_Particulars
       begin
         @ocn_htmlseg_map=SiSU_DAL::Source.new(@md).get_map_ocn_htmlseg
         self
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       end
     end
   end
diff --git a/lib/sisu/v3dv/plaintext.rb b/lib/sisu/v3dv/plaintext.rb
index 739ffb09..e4b9b398 100644
--- a/lib/sisu/v3dv/plaintext.rb
+++ b/lib/sisu/v3dv/plaintext.rb
@@ -80,7 +80,7 @@ module SiSU_Plaintext
     def read
       begin
         md=SiSU_Param::Parameters.new(@opt).get
-        env=SiSU_Env::Info_env.new(@opt.fns)
+        env=SiSU_Env::InfoEnv.new(@opt.fns)
         unless @opt.cmd =~/q/
           path=env.path.output_tell
           tool=(@opt.cmd =~/[MVv]/) \
@@ -102,8 +102,8 @@ module SiSU_Plaintext
         end
         #wrap_width=(defined? md.make.plaintext_wrap) ? md.make.plaintext_wrap : 78
         SiSU_Plaintext::Source::Scroll.new(dal_array,md,wrap_width).songsheet
-        SiSU_Env::Info_skin.new(md).select #watch
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        SiSU_Env::InfoSkin.new(md).select #watch
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -115,7 +115,7 @@ module SiSU_Plaintext
       @@endnotes={ para: [], end: [] }
       def initialize(data,md,wrap_width)
         @data,@md,@wrap_width=data,md,wrap_width
-        @env=SiSU_Env::Info_env.new(@md.fns)
+        @env=SiSU_Env::InfoEnv.new(@md.fns)
         @brace_url=SiSU_Viz::Skin.new.url_decoration
         @tab="\t"
         @@endnotes_=case md.opt.mod.inspect
@@ -186,9 +186,9 @@ WOK
         end
       end
       def plaintext_tail
-        SiSU_Env::Info_skin.new(@md).select
-#       env=SiSU_Env::Info_env.new(@md.fns)
-        vz=SiSU_Env::Get_init.instance.skin
+        SiSU_Env::InfoSkin.new(@md).select
+#       env=SiSU_Env::InfoEnv.new(@md.fns)
+        vz=SiSU_Env::GetInit.instance.skin
         base_url="#{@env.url.root}/#{@md.fnb}"
         generator="Generated by: #{@md.sisu_version[:project]} #{@md.sisu_version[:version]} of #{@md.sisu_version[:date_stamp]} (#{@md.sisu_version[:date]})"  if @md.sisu_version[:version]
         lastdone="Last Generated on: #{Time.now}"
@@ -270,7 +270,7 @@ WOK
         @@endnotes[:para]=[]
       end
       def markup(data)                                                       # Used for major markup instructions
-        dir=SiSU_Env::Info_env.new(@md.fns)
+        dir=SiSU_Env::InfoEnv.new(@md.fns)
         @data_mod,@endnotes,@level,@cont,@copen,@plaintext_contents_close=Array.new(6){[]}
         (0..6).each { |x| @cont[x]=@level[x]=false }
         (4..6).each { |x| @plaintext_contents_close[x]='' }
@@ -343,13 +343,13 @@ WOK
           if dob.obj !~/(^#{Rx[:meta]}|#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
             #if defined? dob.ocn and dob.ocn.to_s =~/\d+/
             #  paranum=dob.ocn.to_s
-            #  @p_num=SiSU_PlaintextFormat::Paragraph_number.new(paranum)
+            #  @p_num=SiSU_PlaintextFormat::ParagraphNumber.new(paranum)
             #end
             p_num=''
             if @env.plaintext_ocn?
               if defined? dob.ocn \
               and not dob.ocn.nil?
-                p_num=SiSU_PlaintextFormat::Paragraph_number.new(dob.ocn).display
+                p_num=SiSU_PlaintextFormat::ParagraphNumber.new(dob.ocn).display
               end
             end
             if dob.is=='heading' \
diff --git a/lib/sisu/v3dv/plaintext_format.rb b/lib/sisu/v3dv/plaintext_format.rb
index c25f1ac3..7aec6da6 100644
--- a/lib/sisu/v3dv/plaintext_format.rb
+++ b/lib/sisu/v3dv/plaintext_format.rb
@@ -60,7 +60,7 @@ module SiSU_PlaintextFormat
   require_relative 'param'                              # param.rb
     include SiSU_Param
   include SiSU_Viz
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(paranum)
       @paranum=/(\d+)/m.match(paranum.to_s)[1]
     end
@@ -74,7 +74,7 @@ module SiSU_PlaintextFormat
       @paranum.gsub(/(\d+)/,'"#\1"')
     end
   end
-  class Format_text_object
+  class FormatTextObject
     def initialize(md,t_o)
       @md,@t_o=md,t_o
       if t_o.class==Hash
@@ -89,7 +89,7 @@ module SiSU_PlaintextFormat
       @txt.gsub!(rgx,'') if @txt =~rgx
       rgx=/#{Mx[:en_a_o]}[\d*+]+\s+(.+?)#{Mx[:en_a_c]}/
       @txt.gsub!(rgx,'\1') if @txt =~rgx
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def scr_endnote_body
       "<endnote>#{@txt}</endnote> "
diff --git a/lib/sisu/v3dv/po4a.rb b/lib/sisu/v3dv/po4a.rb
index 332891b7..2aa4e21d 100644
--- a/lib/sisu/v3dv/po4a.rb
+++ b/lib/sisu/v3dv/po4a.rb
@@ -93,14 +93,14 @@ module SiSU_Po4a
         src[:pth]=@opt.f_pth[:pth]
         src[:files]=if @opt.fns =~ /\.(?:(?:-|ssm\.)sst|ssm)$/
           @opt.fns=@opt.fns.gsub(/\.ssm\.sst$/,'.ssm')
-          SiSU_Assemble::Composite_file_list.new(@opt).read
+          SiSU_Assemble::CompositeFileList.new(@opt).read
         else
           [@opt.fns]
         end
         md=SiSU_Param::Parameters.new(@opt).get
         src[:files].each do |fn|
           SiSU_DAL::Source.new(@opt,fn).read             # -m
-          env=SiSU_Env::Info_env.new(@opt.fns)
+          env=SiSU_Env::InfoEnv.new(@opt.fns)
           m=/((.+?)(?:\~\w\w(?:_\w\w)?)?)\.((?:-|ssm\.)?sst|ssm|ssi)$/ #watch added match for sss
           @fnn,@fnb,@fnt=fn[m,1],fn[m,2],fn[m,3]
           unless @opt.cmd =~/q/
@@ -150,9 +150,9 @@ module SiSU_Po4a
           else 78
           end
           SiSU_Po4a::Source::Scroll.new(fn,@dal_array_lang_src,@dal_array_lang_translation,@@md_src,@@md_trn,wrap_width).songsheet
-          SiSU_Env::Info_skin.new(md).select #watch
+          SiSU_Env::InfoSkin.new(md).select #watch
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -168,7 +168,7 @@ module SiSU_Po4a
         ? md_src
         : md_trn
         @brace_url=SiSU_Viz::Skin.new.url_decoration
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @tab="\t"
         @@endnotes_=(@md.opt.mod.inspect =~/--endnote/) ? true : false    # --footnote
         @br=(@md.opt.mod.inspect =~/--dos/) ? "\r\n" : "\n"               # --unix
@@ -243,7 +243,7 @@ GSUB
         w=[]
         w << [
           "#. #{@po4a_identify_type} - metadata: title",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.title.main,
           meta_src.metadata_tags.title.sub,
@@ -256,7 +256,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: creator",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.creator.head,
           meta_src.metadata_tags.creator.author,
@@ -271,7 +271,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: rights",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.rights.head,
           meta_src.metadata_tags.rights.copyright.text,
@@ -285,7 +285,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: classify",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.classify.head,
           meta_src.metadata_tags.classify.relation,
@@ -301,7 +301,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: date",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.date.head,
           meta_src.metadata_tags.date.added_to_site,
@@ -315,7 +315,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - processing, make instruction",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.processing_tags.make.language,
           meta_src.processing_tags.make.headings,
@@ -349,7 +349,7 @@ GSUB
         w=[]
         w << [
           "#. #{@po4a_identify_type} - metadata: title",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.title.main,
           meta_src.metadata_tags.title.sub,
@@ -369,7 +369,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: creator",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.creator.head,
           meta_src.metadata_tags.creator.author,
@@ -393,7 +393,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: rights",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.rights.head,
           meta_src.metadata_tags.rights.copyright.text,
@@ -415,7 +415,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: classify",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.classify.head,
           meta_src.metadata_tags.classify.relation,
@@ -441,7 +441,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - metadata: date",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.metadata_tags.date.head,
           meta_src.metadata_tags.date.added_to_site,
@@ -463,7 +463,7 @@ GSUB
         ]
         w << [
           "#. #{@po4a_identify_type} - processing, make instruction",
-          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::Pot_number.new.num}",
+          "#: en/#{@md.fns}:#{SiSU_Po4aUtils::PotNumber.new.num}",
           'msgid ""',
           meta_src.processing_tags.make.language,
           meta_src.processing_tags.make.headings,
@@ -811,7 +811,7 @@ GSUB
           if defined? dob_src.ocn \
           and dob_src.ocn.to_s =~/\d+/
             paranum=dob_src.ocn.to_s
-            @p_num=SiSU_Po4aUtils::Paragraph_number.new(paranum)
+            @p_num=SiSU_Po4aUtils::ParagraphNumber.new(paranum)
           end
           case dob_src.is
           when 'heading'; pot_structure_heading(dob_src,notes_s,dob_trn,notes_t)
@@ -835,7 +835,7 @@ GSUB
         #[dob_src,dob_trn]
       end
       def markup(dob)                                     # Used for major markup instructions
-        dir=SiSU_Env::Info_env.new(@md.fns)
+        dir=SiSU_Env::InfoEnv.new(@md.fns)
         fix=[]
           dob.obj.gsub!(/#{Mx[:fa_bold_o]}(.+?)#{Mx[:fa_bold_c]}/,
             "#{Px[:po_bold_o]}\\1#{Px[:po_bold_c]}")
@@ -947,7 +947,7 @@ GSUB
           end
         end
         file_pot.close
-        SiSU_Po4aUtils::Pot_number.new.reset
+        SiSU_Po4aUtils::PotNumber.new.reset
         po4a_git
       end
       def po4a_git
diff --git a/lib/sisu/v3dv/po4a_set.rb b/lib/sisu/v3dv/po4a_set.rb
index 35dd9d1b..e536a464 100644
--- a/lib/sisu/v3dv/po4a_set.rb
+++ b/lib/sisu/v3dv/po4a_set.rb
@@ -120,7 +120,7 @@ module SiSU_Po4aUtils
       trans=(pot.length == 2) ? pot[1] : ''
       po_str=<<WOK
 #. #{@po4a_identify_type} - #{@is_desc}
-#: en/#{@md.fns}:#{Pot_number.new.num}
+#: en/#{@md.fns}:#{PotNumber.new.num}
 msgid ""
 #{pot[0]}
 msgstr ""
@@ -145,7 +145,7 @@ WOK
       trans=(pot.length == 2) ? pot[1] : ''
       po_str=<<WOK
 #. #{@po4a_identify_type} - #{@is_desc}
-#: en/#{@md.fns}:#{Pot_number.new.num}
+#: en/#{@md.fns}:#{PotNumber.new.num}
 #, no-wrap
 msgid ""
 #{pot[0]}
@@ -172,7 +172,7 @@ WOK
       @arr
     end
   end
-  class Header_scan
+  class HeaderScan
     def initialize(md,para)
       @md,@p=md,para
     end
@@ -276,7 +276,7 @@ WOK
       end
     end
   end
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(paranum)
       @paranum=/(\d+)/m.match(paranum)[1]
     end
@@ -284,7 +284,7 @@ WOK
       @paranum.gsub(/(\d+)/,'#\1')
     end
   end
-  class Pot_number
+  class PotNumber
     @@n=0
     def initialize
       @@n +=2
diff --git a/lib/sisu/v3dv/qrcode.rb b/lib/sisu/v3dv/qrcode.rb
index 69ded246..b25504b0 100644
--- a/lib/sisu/v3dv/qrcode.rb
+++ b/lib/sisu/v3dv/qrcode.rb
@@ -70,15 +70,15 @@ module SiSU_QRcode
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
-      l=SiSU_Env::Standardise_language.new(@opt.lng).language
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
+      l=SiSU_Env::StandardiseLanguage.new(@opt.lng).language
       @doc_language=l[:n]
     end
     def read
       begin
-        @env=SiSU_Env::Info_env.new(@opt.fns)
+        @env=SiSU_Env::InfoEnv.new(@opt.fns)
         @md=SiSU_Param::Parameters.new(@opt).get
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
         xbrowser=@env.program.web_browser
         browser=@env.program.console_web_browser
         unless @opt.cmd =~/q/
@@ -88,25 +88,25 @@ module SiSU_QRcode
           : SiSU_Screen::Ansi.new(@opt.cmd,'QR code',"[#{@opt.f_pth[:lng_is]}] #{@opt.fns}").green_title_hi
           SiSU_Screen::Ansi.new(@opt.cmd,"#{browser} #{url_html}").grey_tab if @opt.cmd =~/v/i
         end
-        data=SiSU_HTML::Source::Html_environment.new(@particulars).tuned_file_instructions
-        Output_Info.new(@md).check_output(data)
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        data=SiSU_HTML::Source::HTML_Environment.new(@particulars).tuned_file_instructions
+        OutputInfo.new(@md).check_output(data)
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
     private
-    class Output_Info <Source
+    class OutputInfo <Source
       def initialize(md)
         @manifest={ txt: [], txt_title: [] }
         @md,@fns=md,md.fns
-        @env=SiSU_Env::Info_env.new(@md.fns)
+        @env=SiSU_Env::InfoEnv.new(@md.fns)
         @fnb=@md.fnb
         @base_url="#{@env.url.root}/#{@fnb}"
         @f=SiSU_Env::FileOp.new(@md)
         @base_path=@f.output_path.manifest.dir
-        @@dg ||=SiSU_Env::Info_env.new.digest.type
+        @@dg ||=SiSU_Env::InfoEnv.new.digest.type
         @dg=@@dg
-        l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+        l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
         @language=l[:n]
         @translate=SiSU_Translate::Source.new(@md,@language)
         @brace_url=SiSU_Viz::Skin.new.url_decoration
@@ -128,7 +128,7 @@ module SiSU_QRcode
         #system(%{
         #  cat  #{pt}/#{fn} | qrencode -s 3 -o qrcm.autonomy_markup0.png
         #})
-        cmd=SiSU_Env::System_call.new(mn,@f.place_file.qrcode_md.dir,@md.opt.cmd)
+        cmd=SiSU_Env::SystemCall.new(mn,@f.place_file.qrcode_md.dir,@md.opt.cmd)
         cmd.qrencode
         #system(%{
         #  echo "#{mn}" | qrencode -s 3 -o #{@dest}/qrc_md.#{fn}.png
@@ -140,7 +140,7 @@ module SiSU_QRcode
         @manifest[:txt_title].each do |x|
           mn += x
         end
-        cmd=SiSU_Env::System_call.new(mn,@f.place_file.qrcode_title.dir,@md.opt.cmd)
+        cmd=SiSU_Env::SystemCall.new(mn,@f.place_file.qrcode_title.dir,@md.opt.cmd)
         cmd.qrencode
         #system(%{
         #  echo "#{mn}" | qrencode -s 3 -o #{@dest}/qrc_title.#{fn}.png
@@ -163,7 +163,7 @@ WOK
 WOK
       end
       def summarize_sources(id,file,pth,rel,url)
-        sys=SiSU_Env::System_call.new
+        sys=SiSU_Env::SystemCall.new
         dgst =if @dg =~/^sha(?:2|256)$/; sys.sha256("#{pth}/#{file}")
         else                             sys.md5("#{pth}/#{file}")
         end
@@ -703,7 +703,7 @@ WOK
       def check_output(data)
         begin
           id,file='',''
-          vz=SiSU_Env::Get_init.instance.skin
+          vz=SiSU_Env::GetInit.instance.skin
           @f=SiSU_Env::FileOp.new(@md) #.base_filename
           url=@f.output_path.base.url
           @en_manifest=if @env.output_dir_structure.by_language_code?
@@ -728,7 +728,7 @@ WOK
           language_versions
           output_metadata
           output_metadata_short
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
         end
       end
diff --git a/lib/sisu/v3dv/remote.rb b/lib/sisu/v3dv/remote.rb
index 8da87e42..39e929cc 100644
--- a/lib/sisu/v3dv/remote.rb
+++ b/lib/sisu/v3dv/remote.rb
@@ -63,11 +63,11 @@ module SiSU_Remote
   class Put
     def initialize(opt)
       @opt=opt
-      @dir=SiSU_Env::Info_env.new(@opt.fns)
+      @dir=SiSU_Env::InfoEnv.new(@opt.fns)
       @put=(@opt.fns =~/\.ssm\.sst$/) \
       ? @opt.fns.gsub(/(.+)?\.ssm\.sst$/,'\1.ssm')
       : @opt.fns
-      @remote=SiSU_Env::Info_remote.new(@opt)
+      @remote=SiSU_Env::InfoRemote.new(@opt)
     end
     def rsync
       SiSU_Screen::Ansi.new(@opt.cmd,'Remote placement ->',@put).dark_grey_title_hi unless @opt.cmd =~/q/
@@ -124,9 +124,9 @@ module SiSU_Remote
             imagedir=base_uri + '/_sisu/image' #check on
             doc_skin_dir = /((?:https?|file):\/\/\S+?)\/[^\/]+?\.sst$/.match(url).captures.join + '/_sisu/skin/doc'
             downloaded_file=File.new("#{fnb}.-sst",'w+')
-            image_download_url=SiSU_Assemble::Remote_image.new.image(imagedir)
+            image_download_url=SiSU_Assemble::RemoteImage.new.image(imagedir)
             images=[]
-            skin=SiSU_Assemble::Remote_image.new.image(doc_skin_dir)
+            skin=SiSU_Assemble::RemoteImage.new.image(doc_skin_dir)
             f.collect.each do |r|                            # work area
               unless r =~/^%+\s/
                 skin << r.scan(@rgx_skin).uniq if r =~@rgx_skin
@@ -139,7 +139,7 @@ module SiSU_Remote
             end
             if skin \
             and skin.length > 0
-              SiSU_Assemble::Remote_image.new.download_doc_skin(skin)
+              SiSU_Assemble::RemoteImage.new.download_doc_skin(skin)
             end
             if images \
             and images.length > 1
@@ -150,8 +150,8 @@ module SiSU_Remote
               @msg,@msgs='downloading images:', [ images.join(',') ]
               @tell.call.warn unless @opt.cmd =~/q/
               image_info=image_download_url + images
-              SiSU_Assemble::Remote_image.new.download_images(image_info)
-              #SiSU_Assemble::Remote_image.new.download_images(image_download_url,images)
+              SiSU_Assemble::RemoteImage.new.download_images(image_info)
+              #SiSU_Assemble::RemoteImage.new.download_images(image_download_url,images)
               @msg,@msgs='downloading done',nil
               @tell.call.warn unless @opt.cmd =~/q/
             end
@@ -166,7 +166,7 @@ module SiSU_Remote
       if get_p.length > 0                                     #% remote sisupod
          require 'net/http'
         for requested_pod in get_p
-          pod_info=Remote_download.new(requested_pod)
+          pod_info=RemoteDownload.new(requested_pod)
           Net::HTTP.start(pod_info.pod.site) do |http|
             resp=http.get("#{pod_info.pod.path}/#{pod_info.pod.name_source}")
             open(pod_info.pod.name,'wb') do |file|
@@ -177,7 +177,7 @@ module SiSU_Remote
       end
     end
   end
-  class Remote_download
+  class RemoteDownload
     def initialize(requested_file)
       @requested_file=requested_file
     end
diff --git a/lib/sisu/v3dv/rexml.rb b/lib/sisu/v3dv/rexml.rb
index 01f9a1fd..d4692b76 100644
--- a/lib/sisu/v3dv/rexml.rb
+++ b/lib/sisu/v3dv/rexml.rb
@@ -68,8 +68,8 @@ module SiSU_Rexml
     require 'rexml/document' if FileTest.directory?("#{Config::CONFIG['rubylibdir']}/rexml") #Config::CONFIG['sitedir']
     def initialize(md,fno)
       @md,@fno=md,fno
-      @env=SiSU_Env::Info_env.new(@md.fns)
-      @prog=SiSU_Env::Info_program.new #(md.fns) #if md
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
+      @prog=SiSU_Env::InfoProgram.new #(md.fns) #if md
       if File.file?(@fno)
         @fnap=@fno #index.xml causes problems with index.html in server config
       end
@@ -102,7 +102,7 @@ module SiSU_Rexml
           SiSU_Screen::Ansi.new(@md.opt.cmd,'fuschia',"File Not Found #{xmlfile}",'requested XML processing skipped').colorize unless @md.opt.cmd =~/q/
           exit
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
       end
     end
diff --git a/lib/sisu/v3dv/screen_text_color.rb b/lib/sisu/v3dv/screen_text_color.rb
index 8fc356ac..c3fd0b29 100644
--- a/lib/sisu/v3dv/screen_text_color.rb
+++ b/lib/sisu/v3dv/screen_text_color.rb
@@ -68,7 +68,7 @@ module SiSU_Screen
     def initialize(cmd,*txt)
       @cmd,@txt=cmd,txt
       @color_instruct=txt[0]
-      flag=SiSU_Env::Info_processing_flag.new
+      flag=SiSU_Env::InfoProcessingFlag.new
       if @cmd
         if flag.color                                                              #set default colors on or off -c acts as toggle against this default, if default is off -c turns on, if default is on -c turns off
           @use_color=if @cmd =~/c/; false
diff --git a/lib/sisu/v3dv/share_src.rb b/lib/sisu/v3dv/share_src.rb
index ac1d4374..93552b49 100644
--- a/lib/sisu/v3dv/share_src.rb
+++ b/lib/sisu/v3dv/share_src.rb
@@ -63,7 +63,7 @@ module SiSU_Markup
   class Source
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new(@opt.fns)
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
       md=SiSU_Param::Parameters.new(@opt).get
       @file=SiSU_Env::FileOp.new(md)
       stub=@opt.fnb.gsub(/~[a-z]+$/,'')
diff --git a/lib/sisu/v3dv/share_src_kdissert.rb b/lib/sisu/v3dv/share_src_kdissert.rb
index 8d49fe06..336d421c 100644
--- a/lib/sisu/v3dv/share_src_kdissert.rb
+++ b/lib/sisu/v3dv/share_src_kdissert.rb
@@ -65,7 +65,7 @@ module SiSU_KdiSource
       include FileUtils
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new(@opt.fns)
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
       @output_path="#{@env.path.output}/#{@opt.fnb}"
     end
     def read
diff --git a/lib/sisu/v3dv/shared_html.rb b/lib/sisu/v3dv/shared_html.rb
index a96577f0..0b17ba21 100644
--- a/lib/sisu/v3dv/shared_html.rb
+++ b/lib/sisu/v3dv/shared_html.rb
@@ -59,7 +59,7 @@
 module SiSU_HTML_Shared
   require_relative 'defaults'                           # defaults.rb
   require_relative 'html_table'                         # html_table.rb
-  class Table_html < SiSU_HTML_Table::Table_html
+  class TableHTML < SiSU_HTML_Table::TableHTML
   end
 end
 __END__
diff --git a/lib/sisu/v3dv/shared_html_lite.rb b/lib/sisu/v3dv/shared_html_lite.rb
index 87f51146..5fd0a408 100644
--- a/lib/sisu/v3dv/shared_html_lite.rb
+++ b/lib/sisu/v3dv/shared_html_lite.rb
@@ -80,13 +80,13 @@ module SiSU_FormatShared
       @tab="\t"
       @brace_url=SiSU_Viz::Skin.new.url_decoration
       @@tablehead,@@tablefoot=[],[]
-      @vz=SiSU_Env::Get_init.instance.skin
-      @env=SiSU_Env::Info_env.new(@md.fns)
+      @vz=SiSU_Env::GetInit.instance.skin
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
       @base_url="#{@env.url.root}/#{@md.fnb}/#{@hname}.html"
     end
     def urls(data)
       @words=[]
-      map_nametags=SiSU_Particulars::Combined_singleton.instance.get_map_nametags(@md).nametags_map
+      map_nametags=SiSU_Particulars::CombinedSingleton.instance.get_map_nametags(@md).nametags_map
       data.each do |word|
         @words << if word=~/#{Mx[:lnk_o]}(.+?)#{Mx[:lnk_c]}(#{Mx[:url_o]}\S+?#{Mx[:url_c]}|#{Mx[:rel_o]}\S+?#{Mx[:rel_c]}|image)/
           if word =~/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/
@@ -292,7 +292,7 @@ GSUB
       @new_content.join
     end
   end
-  class CSS_Format_generic #does CSS_Format in one definition, needs to be told about attrib, despite brevity of generic, easier to see structure with CSS_Format
+  class CSS_FormatGeneric #does CSS_Format in one definition, needs to be told about attrib, despite brevity of generic, easier to see structure with CSS_Format
     def initialize(attrib='',txt='',id=nil,ocnd=nil,ocns=nil,lv='',hname=nil)
       @tab="\t"
       @attrib=attrib
diff --git a/lib/sisu/v3dv/shared_markup_alt.rb b/lib/sisu/v3dv/shared_markup_alt.rb
index 4390dca1..27092050 100644
--- a/lib/sisu/v3dv/shared_markup_alt.rb
+++ b/lib/sisu/v3dv/shared_markup_alt.rb
@@ -193,7 +193,7 @@ module SiSU_TextRepresentation
       @s
     end
   end
-  class Modified_text_plus_Hash_digest
+  class ModifiedTextPlusHashDigest
     def initialize(md,x)
       @md=md
       if x.class==String
@@ -201,7 +201,7 @@ module SiSU_TextRepresentation
       else
         @t_o,@s=x,x.obj.dup
       end
-      @env ||=SiSU_Env::Info_env.new(@md.fns)
+      @env ||=SiSU_Env::InfoEnv.new(@md.fns)
       @sha_ =((@env.digest.type =='sha256') ? true : false)
       @sha_ ? (require 'digest/sha2') : (require 'digest/md5')
     end
@@ -247,7 +247,7 @@ module SiSU_TextRepresentation
         SiSU_TextRepresentation::Alter.new(txt).semi_revert_markup
       end
       def images(imgs)
-        sys=SiSU_Env::System_call.new
+        sys=SiSU_Env::SystemCall.new
         line_image=[]
         img_dgst={}
         if imgs and imgs.length > 0
diff --git a/lib/sisu/v3dv/shared_metadata.rb b/lib/sisu/v3dv/shared_metadata.rb
index 06d382c3..1f02ce1f 100644
--- a/lib/sisu/v3dv/shared_metadata.rb
+++ b/lib/sisu/v3dv/shared_metadata.rb
@@ -65,9 +65,9 @@ module Metadata
     end
     def metadata_base
       meta,tag=[],[]
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       base_html="#{dir.url.root}/#{@md.fnb}"
-      l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+      l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
       language=l[:n]
       tr=SiSU_Translate::Source.new(@md,language)
       @attrib='md'
@@ -974,7 +974,7 @@ WOK
       self
     end
   end
-  class TeX_metadata
+  class TeX_Metadata
     def initialize(md)
       @md=md
       @br="\\\\\n"
@@ -985,19 +985,19 @@ WOK
 }
     end
     def spec_char(inf)
-      SiSU_TeX_Pdf::Special_characters.new(@md,inf).special_characters
+      SiSU_TeX_Pdf::SpecialCharacters.new(@md,inf).special_characters
     end
     def word_break_points(inf)
-      SiSU_TeX_Pdf::Special_characters.new(@md,inf).special_word_break_points
+      SiSU_TeX_Pdf::SpecialCharacters.new(@md,inf).special_word_break_points
     end
     def number_break_points(inf)
-      SiSU_TeX_Pdf::Special_characters.new(@md,inf).special_number_break_points
+      SiSU_TeX_Pdf::SpecialCharacters.new(@md,inf).special_number_break_points
     end
     def metadata_tex
       meta=[]
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       base_html="#{dir.url.root}/#{@md.fnb}"
-      l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+      l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
       language=l[:n]
       tr=SiSU_Translate::Source.new(@md,language)
       tag="Document Manifest @"
diff --git a/lib/sisu/v3dv/shared_txt.rb b/lib/sisu/v3dv/shared_txt.rb
index 0ba3a322..c59e1866 100644
--- a/lib/sisu/v3dv/shared_txt.rb
+++ b/lib/sisu/v3dv/shared_txt.rb
@@ -124,7 +124,7 @@ module SiSU_TextUtils
       @arr
     end
   end
-  class Header_scan
+  class HeaderScan
     def initialize(md,para)
       @md,@p=md,para
     end
diff --git a/lib/sisu/v3dv/shared_xhtml.rb b/lib/sisu/v3dv/shared_xhtml.rb
index 9cd010af..f135aa6a 100644
--- a/lib/sisu/v3dv/shared_xhtml.rb
+++ b/lib/sisu/v3dv/shared_xhtml.rb
@@ -59,7 +59,7 @@
 module SiSU_XHTML_Shared
   require_relative 'defaults'                           # defaults.rb
   require_relative 'xhtml_table'                        # xhtml_table.rb
-  class Table_xhtml < SiSU_XHTML_Table::Table_xhtml
+  class TableXHTML < SiSU_XHTML_Table::TableXHTML
   end
 end
 __END__
diff --git a/lib/sisu/v3dv/shared_xml.rb b/lib/sisu/v3dv/shared_xml.rb
index 93848fd0..78611ccc 100644
--- a/lib/sisu/v3dv/shared_xml.rb
+++ b/lib/sisu/v3dv/shared_xml.rb
@@ -60,8 +60,8 @@ module SiSU_XML_Munge
     require_relative 'defaults'                         # defaults.rb
     def initialize(md)
       @md=md
-      @sys=SiSU_Env::System_call.new
-      @dir=SiSU_Env::Info_env.new(@md.fns)
+      @sys=SiSU_Env::SystemCall.new
+      @dir=SiSU_Env::InfoEnv.new(@md.fns)
       @brace_url=SiSU_Viz::Skin.new.url_decoration
       if @md.sem_tag
         @ab ||=semantic_tags.default
@@ -642,7 +642,7 @@ module SiSU_XML_Tags #Format
       end
       content=meta_content_clean(@md.keywords)
       @keywords=%{  <meta name="keywords" content="#{content}" />\n} if @md.keywords
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def meta_content_clean(content='')
       content
diff --git a/lib/sisu/v3dv/sisupod_make.rb b/lib/sisu/v3dv/sisupod_make.rb
index 7a3b4727..5fe93429 100644
--- a/lib/sisu/v3dv/sisupod_make.rb
+++ b/lib/sisu/v3dv/sisupod_make.rb
@@ -65,13 +65,13 @@ module SiSU_Doc
     def initialize(opt)
       @opt=opt
       m=/.+\/(?:src\/)?(\S+)/im
-      @date=SiSU_Env::Info_date.new.dt
-      @env=SiSU_Env::Info_env.new(@opt.fns)
-      @ver=SiSU_Env::Info_version.instance.get_version
+      @date=SiSU_Env::InfoDate.new.dt
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
+      @ver=SiSU_Env::InfoVersion.instance.get_version
       @ans=SiSU_Response::Response.new
       pod_path="#{@env.processing_path.processing}/sisupod"
       @v=(@opt.cmd =~/[VM]/) ? 'v' : ''
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
       @file=@particulars.file
       @local_path="#{@file.output_path.sisupod.dir}"
       @zipfile=(@opt.fns =~/\.ssm\.sst$/) \
@@ -132,7 +132,7 @@ module SiSU_Doc
       end
     end
     def directories
-      SiSU_Env::Info_env.new.sisupod_v3(@opt)
+      SiSU_Env::InfoEnv.new.sisupod_v3(@opt)
     end
     def select_skin(skin='')                                                   #skin loading logic here
       load "#{SiSU_lib}/defaults.rb"
@@ -284,7 +284,7 @@ module SiSU_Doc
     def sisupod_xz
       FileUtils::mkdir_p(@file.output_path.sisupod.dir) unless FileTest.directory?(@file.output_path.sisupod.dir)
       tree=(@opt.cmd =~/[vVM]/ \
-      && SiSU_Env::System_call.new.program_found?('tree')) \
+      && SiSU_Env::SystemCall.new.program_found?('tree')) \
       ? 'tree sisupod'
       : ''
       if FileTest.directory?(@env.processing_path.processing)
diff --git a/lib/sisu/v3dv/sitemaps.rb b/lib/sisu/v3dv/sitemaps.rb
index b3e9169d..cefdba8e 100644
--- a/lib/sisu/v3dv/sitemaps.rb
+++ b/lib/sisu/v3dv/sitemaps.rb
@@ -72,13 +72,13 @@ module SiSU_Sitemaps
     end
     def songsheet
       begin
-        @sys=SiSU_Env::System_call.new
-        fn_set_lang=SiSU_Env::Standardise_language.new(@opt.lng).language
-        @fn=SiSU_Env::Env_call.new(@opt.fns).lang(fn_set_lang[:c])
+        @sys=SiSU_Env::SystemCall.new
+        fn_set_lang=SiSU_Env::StandardiseLanguage.new(@opt.lng).language
+        @fn=SiSU_Env::EnvCall.new(@opt.fns).lang(fn_set_lang[:c])
         if @opt.cmd =~/Y/
           @md=SiSU_Param::Parameters.new(@opt).get
           @trans=SiSU_XML_Munge::Trans.new(@md) #check @md is required
-          @env=SiSU_Env::Info_env.new(@md.fns)
+          @env=SiSU_Env::InfoEnv.new(@md.fns)
 #         @file=SiSU_Env::FileOp.new(@md)
           @rdf=SiSU_XML_Tags::RDF.new(@md)
           @fnb_utf8_xml=@md.fnb.dup
@@ -86,11 +86,11 @@ module SiSU_Sitemaps
           output_map(sitemap)
         elsif @opt.mod.inspect =~/--sitemaps/
           @sitemap_idx_fn='sitemapindex.xml'
-          @env=SiSU_Env::Info_env.new
+          @env=SiSU_Env::InfoEnv.new
           output_idx(sitemap_index)
           SiSU_Screen::Ansi.new(@opt.cmd,"sitemap index:","#{@env.path.output}/#{@sitemap_idx_fn}").result unless @opt.cmd =~/q/
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
diff --git a/lib/sisu/v3dv/sst_convert_markup.rb b/lib/sisu/v3dv/sst_convert_markup.rb
index fb27f88b..29aca8dd 100644
--- a/lib/sisu/v3dv/sst_convert_markup.rb
+++ b/lib/sisu/v3dv/sst_convert_markup.rb
@@ -62,7 +62,7 @@ module SiSU_Modify
   require_relative 'sst_identify_markup'                # sst_identify_markup.rb
   require_relative 'sst_from_xml'                       # sst_from_xml.rb
   require_relative 'response'                           # response.rb
-  class Convert_markup
+  class ConvertMarkup
     def initialize(opt)
       @opt=opt
       @description='This is a script that contains canned text conversions for reuse'
@@ -231,7 +231,7 @@ WOK
           if i =~/(?:\.sst|\.ssm|\.ssi)$/
             @new,@matched,@flag_start,@flag_end,@empty1,@empty2=true,false,false,false,false,false
             o="#{i}.bk" #o is for old
-            markup_version=SiSU_Markup::Markup_identify.new(@opt).markup_version?
+            markup_version=SiSU_Markup::MarkupIdentify.new(@opt).markup_version?
             if (@opt.mod.inspect=~/37/ and markup_version=~/0.38/) \
             or (@opt.mod.inspect=~/current|38/ and markup_version=~/0.37/)
               puts "#{i} #{markup_version}"
@@ -299,14 +299,14 @@ argv=$*
 @opt=SiSU_Commandline::Options.new(argv)
 case @opt.mod.inspect
 when /=kdi/
-  SiSU_Modify::Convert_markup.new(@opt).conversion
+  SiSU_Modify::ConvertMarkup.new(@opt).conversion
 when /(?:36|37|38)?to-?(?:37|38)|--convert|--to|--from|default/
 @opt.files.each do |fns|
   @opt.fns=fns
-  SiSU_Modify::Convert_markup.new(@opt).conversion
+  SiSU_Modify::ConvertMarkup.new(@opt).conversion
 end
 else
   @opt.mod='--help'
- SiSU_Modify::Convert_markup.new(@opt).help
+ SiSU_Modify::ConvertMarkup.new(@opt).help
 end
 __END__
diff --git a/lib/sisu/v3dv/sst_do_inline_footnotes.rb b/lib/sisu/v3dv/sst_do_inline_footnotes.rb
index 7a8e42bf..73b49087 100644
--- a/lib/sisu/v3dv/sst_do_inline_footnotes.rb
+++ b/lib/sisu/v3dv/sst_do_inline_footnotes.rb
@@ -84,9 +84,9 @@ module SiSU_ConvertFootnotes
     def initialize(opt)
       @opt=opt
       @@fns||@opt.fns
-      @my_make=SiSU_Env::Create_file.new(@opt.fns)
-      @fnm=SiSU_Env::Info_file.new(@opt.fns).marshal.dal_content
-      SiSU_Env::Create_system_link.new.images
+      @my_make=SiSU_Env::CreateFile.new(@opt.fns)
+      @fnm=SiSU_Env::InfoFile.new(@opt.fns).marshal.dal_content
+      SiSU_Env::CreateSystemLink.new.images
     end
     def read                                                                     #creates dal
       begin
@@ -94,7 +94,7 @@ module SiSU_ConvertFootnotes
         @@dal_array=[]
         @@fns=@opt.fns
         create_dal
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -109,7 +109,7 @@ module SiSU_ConvertFootnotes
         dal=if @@dal_array.empty?; read_fnm
         else @@dal_array.dup #check
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         Instantiate.new
       end
@@ -149,8 +149,8 @@ module SiSU_ConvertFootnotes
   class Output
     def initialize(md,data)
       @md,@data=md,data
-      @my_make=SiSU_Env::Create_file.new(@md.fns)
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      @my_make=SiSU_Env::CreateFile.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       @hard="#{Dir.pwd}/#{@md.fns}.fn"
     end
     def hard_output
@@ -167,9 +167,9 @@ module SiSU_ConvertFootnotes
     def initialize(md,data)
       @md,@data=md,data
       @@word_mode=[]
-      @env=SiSU_Env::Info_env.new(@md.fns)
-      @skin=SiSU_Env::Info_skin.new(@md)
-      l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
+      @skin=SiSU_Env::InfoSkin.new(@md)
+      l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
       @language=l[:n]
       @translate=SiSU_Translate::Source.new(@md,@language)
     end
@@ -184,7 +184,7 @@ module SiSU_ConvertFootnotes
       reset
       data=@data
       @metafile="#{@env.processing_path.dal}/#{@md.fns}.meta"
-      my_make_source_file=SiSU_Env::Create_file.new(@md.fns)
+      my_make_source_file=SiSU_Env::CreateFile.new(@md.fns)
       data=data.join.split("\n\n")
       data_new=[]
       data.each do |x|
@@ -468,5 +468,5 @@ module SiSU_ConvertFootnotes
   end
 end
 __END__
-@particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+@particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
 dal_array=@particulars.dal_array # dal file drawn here
diff --git a/lib/sisu/v3dv/sst_from_xml.rb b/lib/sisu/v3dv/sst_from_xml.rb
index 068eb62e..59495e5a 100644
--- a/lib/sisu/v3dv/sst_from_xml.rb
+++ b/lib/sisu/v3dv/sst_from_xml.rb
@@ -65,7 +65,7 @@ module SiSU_sstFromXML
     def initialize(opt)
       @opt=opt
       @sisu,@sisu_base=[],[]
-      @ver=SiSU_Env::Info_version.instance.get_version
+      @ver=SiSU_Env::InfoVersion.instance.get_version
     end
     def tell(filename,type)
       SiSU_Screen::Ansi.new(@opt.cmd,"XML #{type} to SiSU sst","#{filename} --> #{filename}.sst").green_hi_blue
diff --git a/lib/sisu/v3dv/sst_identify_markup.rb b/lib/sisu/v3dv/sst_identify_markup.rb
index 2089a9a8..af30f19b 100644
--- a/lib/sisu/v3dv/sst_identify_markup.rb
+++ b/lib/sisu/v3dv/sst_identify_markup.rb
@@ -59,7 +59,7 @@
 
 =end
 module SiSU_Markup
-  class Markup_inform
+  class MarkupInform
     attr_accessor :version
     def initialize(version,message,declared_markup='',declared_type='')
       @version,@message,@declared_markup,@declared_type=version,message,declared_markup,declared_type
@@ -77,10 +77,10 @@ module SiSU_Markup
       @declared_type
     end
     def history
-      Markup_history.new(@version).query
+      MarkupHistory.new(@version).query
     end
   end
-  class Markup_identify
+  class MarkupIdentify
     def initialize(opt)
       @opt=opt
       @description='This is a script attempts to identify the version of markup used in SiSU (and provides information on changes in markup)'
@@ -121,14 +121,14 @@ WOK
           if @flag_2_0 \
           or y =~/^@make:|^@classify|^\s\s?:[a-z_-]+?:\s+\S/
             version=2.0.to_f
-            markup=Markup_inform.new(version,'2.0' + oldlinks,@declared_markup,@declared_type)
+            markup=MarkupInform.new(version,'2.0' + oldlinks,@declared_markup,@declared_type)
             @flag_2_0=true
             break
           end
           unless @flag_38
             if (y =~/^:?A~/ and f =~/(?:\.sst|\.ssm|\.ssi)/)
               version='0.38'
-              markup=Markup_inform.new(version,'0.38' + oldlinks,@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.38' + oldlinks,@declared_markup,@declared_type)
               @flag_38=true
             end
           end
@@ -136,14 +136,14 @@ WOK
             if @flag_1_0 \
             or y =~/^=\{.+?\}\s*$/
               version='0.69'
-              markup=Markup_inform.new(version,'0.69' + oldlinks,@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.69' + oldlinks,@declared_markup,@declared_type)
               @flag_1_0=true
               break
             end
             if @flag_66 \
             or y =~/[a-z+][:;]\{.+?\}[:;][a-z+]/
               version='0.66'
-              markup=Markup_inform.new(version,'0.66' + oldlinks,@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.66' + oldlinks,@declared_markup,@declared_type)
               @flag_66=true
               break
             end
@@ -162,26 +162,26 @@ WOK
             if @flag_57 \
             or (y =~/^:?A~\?? @title/ and f =~/(?:\.sst|\.ssm|\.ssi)/)
               version='0.57'
-              markup=Markup_inform.new(version,'0.57' + oldlinks,@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.57' + oldlinks,@declared_markup,@declared_type)
               @flag_57=true
               break
             end
             if @flag_38 \
             or (y =~/^:?A~/ and f =~/(?:\.sst|\.ssm|\.ssi)/)
               version='0.38'
-              markup=Markup_inform.new(version,'0.38' + oldlinks,@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.38' + oldlinks,@declared_markup,@declared_type)
               @flag_38=true
               break if i >= 200
               if y =~ /(?:~{\*+|~\[\*|~\[\+)\s/
                 version='0.42'
-                markup=Markup_inform.new(version,'0.42' + oldlinks,@declared_markup,@declared_type)
+                markup=MarkupInform.new(version,'0.42' + oldlinks,@declared_markup,@declared_type)
                 break
               end
             end
             if (y =~/^1~/ and f =~/(?:\.sst|\.ssm|\.ssi)/) \
             and not @flag_38
               version='0.37'
-              markup=Markup_inform.new(version,'0.37 is substantially 0.16 - 0.36 markup with new file-extension' + oldlinks,@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.37 is substantially 0.16 - 0.36 markup with new file-extension' + oldlinks,@declared_markup,@declared_type)
               break
             end
             if y =~/^1~/ \
@@ -193,31 +193,31 @@ WOK
                 " (change file extension from .#{t}#{n} to .ssm)"
               else " (change file extension from .#{t}#{n} to .sst)"
               end
-              markup=Markup_inform.new(version,'0.16 - 0.36' + instruct + links,@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.16 - 0.36' + instruct + links,@declared_markup,@declared_type)
               break
             end
             if y =~/^0\{~/ \
             and not @flag_38
               version='0.1'
-              markup=Markup_inform.new(version,'0.1 - 0.15',@declared_markup,@declared_type)
+              markup=MarkupInform.new(version,'0.1 - 0.15',@declared_markup,@declared_type)
               break
             end
             if y =~/^0\{{3}/ \
             and not @flag_38
-              markup=Markup_inform.new('circa. 1997','old, check date',@declared_markup,@declared_type)
+              markup=MarkupInform.new('circa. 1997','old, check date',@declared_markup,@declared_type)
               break
             end
             markup='Not a recognised file type '
           end
         end
         markup
-      else Markup_history.new(@opt).help_query
+      else MarkupHistory.new(@opt).help_query
       end
     end
     def determine_markup_version
       if @opt.fns.nil? \
       or @opt.fns.empty?
-        Markup_history.new(@opt).help_identify
+        MarkupHistory.new(@opt).help_identify
       end
       if File.exist?(@opt.fns)
         if @opt.fns =~/\.(?:sst|ssm|ssi|s[123i]|r[123])/
@@ -251,7 +251,7 @@ WOK
       end
     end
   end
-  class Markup_history
+  class MarkupHistory
     def initialize(opt)
       @opt=opt
     end
@@ -470,5 +470,5 @@ end
 puts "SiSU files:"
 puts f
 f.each do |x|
-  SiSU_Markup::Markup_identify.new(x).markup_version?
+  SiSU_Markup::MarkupIdentify.new(x).markup_version?
 end
diff --git a/lib/sisu/v3dv/sst_to_s_xml_sax.rb b/lib/sisu/v3dv/sst_to_s_xml_sax.rb
index 0fc34be7..c96eabfe 100644
--- a/lib/sisu/v3dv/sst_to_s_xml_sax.rb
+++ b/lib/sisu/v3dv/sst_to_s_xml_sax.rb
@@ -79,7 +79,7 @@ module SiSU_SimpleXML_ModelSax
     @@fns=nil
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_env_md(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_env_md(opt)
     end
     def read
       begin
@@ -101,7 +101,7 @@ module SiSU_SimpleXML_ModelSax
         else @@fns_array.dup #check
         end
         SiSU_SimpleXML_ModelSax::Convert::Songsheet.new(@fns_array,@particulars).songsheet
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure #file closed in songsheet
       end
     end
@@ -122,7 +122,7 @@ module SiSU_SimpleXML_ModelSax
           SiSU_SimpleXML_ModelSax::Convert::Scroll.new(@data,@particulars).songsheet
           SiSU_SimpleXML_ModelSax::Convert::Tidy.new(@md,@env).xml if @md.opt.cmd =~/[vVM]/ # test wellformedness, comment out when not in use
           SiSU_Rexml::Rexml.new(@md,@md.fn[:sxs]).xml if @md.opt.cmd =~/M/ # test rexml parsing, comment out when not in use #debug
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
         end
       end
@@ -134,13 +134,13 @@ module SiSU_SimpleXML_ModelSax
       @@xml={ body: [], open: [], close: [], head: [] }
       def initialize(data='',particulars='')
         @data,@env,@md=data,particulars.env,particulars.md
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @regx=/^(?:#{Mx[:mk_o]}:p[bn]#{Mx[:mk_c]}\s*)?(?:#{Mx[:lv_o]}[1-9]:(\S*)#{Mx[:lv_c]})?(.+)/
         @tab="\t"
         if @md
           @trans=SiSU_XML_Munge::Trans.new(@md)
         end
-        @sys=SiSU_Env::System_call.new
+        @sys=SiSU_Env::SystemCall.new
       end
       def songsheet
         pre
@@ -262,7 +262,7 @@ WOK
       end
       def markup
         data=[]
-        dir=SiSU_Env::Info_env.new(@md.fns)
+        dir=SiSU_Env::InfoEnv.new(@md.fns)
         xml_sc(@md)
         @endnotes,@level,@cont,@copen,@xml_contents_close=[],[],[],[],[]
         @rcdc=false
@@ -284,7 +284,7 @@ WOK
           @trans.char_enc.utf8(para) if @sys.locale =~/utf-?8/i #% utf8
           para.gsub!(/^@(\S+?):/,"#{Mx[:lv_o]}@\\1#{Mx[:lv_c]}")
           if para =~/\A#{Mx[:lv_o]}@(\S+?)#{Mx[:lv_c]}\s*(.+?)\Z/m # for headers
-            d_meta=SiSU_TextUtils::Header_scan.new(@md,para).meta
+            d_meta=SiSU_TextUtils::HeaderScan.new(@md,para).meta
             if d_meta; xml_head(d_meta)
             end
           end
@@ -294,9 +294,9 @@ WOK
             @rcdc=true
           end
           if para !~/(^@\S+?:|^\s*$|<ENDNOTES>|<EOF>)/
-            @sto=SiSU_text_parts::Split_text_object.new(@md,para).lev_segname_para
+            @sto=SiSU_text_parts::SplitTextObject.new(@md,para).lev_segname_para
             unless @rcdc
-              format_scroll=SiSU_XML_Format::Format_scroll.new(@md,@sto.text) if @sto.format =~/i[1-9]|ordinary/
+              format_scroll=SiSU_XML_Format::FormatScroll.new(@md,@sto.text) if @sto.format =~/i[1-9]|ordinary/
               case @sto.format
               when /^(1):(\S*)/
                 xml_clean(para)
@@ -310,7 +310,7 @@ WOK
                 xml_clean(para)
                 xml_structure(para,$1,$2)
                 para=@sto.lev_para_ocn.heading_body3
-              when /^(4):(\S*)/ # work on see Split_text_object
+              when /^(4):(\S*)/ # work on see SplitTextObject
                 xml_clean(para)
                 xml_structure(para,$1,$2)
                 para=@sto.lev_para_ocn.heading_body4
@@ -332,7 +332,7 @@ WOK
                   para.gsub!(/>/,'&gt;')
                   para=code_structure(para)
                 elsif para =~/<!Th?.+/ # tables come as single block #work area 2005w13
-                  table=SiSU_Tables::Table_xml.new(para)
+                  table=SiSU_Tables::TableXML.new(para)
                   para=table.table_split
                   para=table_structure(para)
                 else xml_structure(para,nil,nil)
@@ -345,16 +345,16 @@ WOK
               if para =~/.*<:#>.*$/
                 para=case para
                 when /<:i1>/
-                  format_text=Format_text_object.new(para,'')
+                  format_text=FormatTextObject.new(para,'')
                   format_text.scr_inden_ocn_e_no_paranum
                 when /<:i2>/
-                  format_text=Format_text_object.new(para,'')
+                  format_text=FormatTextObject.new(para,'')
                   format_text.scr_inden_ocn_e_no_paranum
                 end
               end
               if para =~/<:center>/
                 one,two=/(.*)<:center>(.*)/.match(para)[1,2]
-                format_text=Format_text_object.new(one,two)
+                format_text=FormatTextObject.new(one,two)
                 para=format_text.center
               end
             end
@@ -375,9 +375,9 @@ WOK
       end
       def pre
         rdf=SiSU_XML_Tags::RDF.new(@md)
-        dir=SiSU_Env::Info_env.new
+        dir=SiSU_Env::InfoEnv.new
         @@xml[:head],@@xml[:body]=[],[]
-        css=SiSU_Env::CSS_select.new(@md).xml_sax
+        css=SiSU_Env::CSS_Select.new(@md).xml_sax
         encoding=if @sys.locale =~/utf-?8/i; '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
         else                                 '<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>'
         end
@@ -432,7 +432,7 @@ WOK
     class Tidy
       def initialize(md,dir)
         @md,@env=md,dir
-        @prog=SiSU_Env::Info_program.new
+        @prog=SiSU_Env::InfoProgram.new
       end
       def xml
         if @prog.tidy !=false #note values can be other than true
@@ -441,7 +441,7 @@ WOK
             SiSU_Screen::Ansi.new(@md.opt.cmd,'','','check document structure')
             tell.grey_open unless @md.opt.cmd =~/q/
             tidyfile='/dev/null' #don't want one or screen output, check for alternative flags
-            tidy =SiSU_Env::System_call.new("#{Dir.pwd}/#{@md.fn[:sxs]}",tidyfile)
+            tidy =SiSU_Env::SystemCall.new("#{Dir.pwd}/#{@md.fn[:sxs]}",tidyfile)
             tidy.well_formed?
             tell.p_off unless @md.opt.cmd =~/q/
           end
diff --git a/lib/sisu/v3dv/sysenv.rb b/lib/sisu/v3dv/sysenv.rb
index a7fa3c75..a5658ee1 100644
--- a/lib/sisu/v3dv/sysenv.rb
+++ b/lib/sisu/v3dv/sysenv.rb
@@ -65,7 +65,7 @@ module SiSU_Env
     include FileUtils::Verbose
   require 'singleton'
   @@noyaml=false
-  class Info_date
+  class InfoDate
     require 'date'
     attr_accessor :dt,:t
     def initialize
@@ -91,7 +91,7 @@ module SiSU_Env
       '2012'
     end
   end
-  class Info_system
+  class InfoSystem
     require 'rbconfig'
       include Singleton
     @@user,@@home,@@hostname,@@pwd,@@sisu_etc,@@host,@@arch,@@rbver,@@dir_arch,@@dir_sitearch,@@dir_bin,@@locale,@@rc,@@sisurc_path,@@ad=ENV['USER'],ENV['HOME'],ENV['HOSTNAME'],ENV['PWD'],Config::CONFIG['sysconfdir'] + '/sisu',Config::CONFIG['host'],Config::CONFIG['arch'],%x{ruby -v}.strip,Config::CONFIG['archdir'],Config::CONFIG['sitearchdir'],Config::CONFIG['bindir'],%x{locale charmap}.strip,nil,nil,{} # %x{ruby -v}.strip # Config::CONFIG['rb_ver']
@@ -241,7 +241,7 @@ module SiSU_Env
     def initialize
       @user,@home,@hostname,@pwd,@sisu_etc,@host,@arch,@rbver,@dir_arch,@dir_sitearch,@dir_bin,@locale,@default_dir,@rc_path,@yamlrc_path,@ad_path=\
       @@user,@@home,@@hostname,@@pwd,@@sisu_etc,@@host,@@arch,@@rbver,@@dir_arch,@@dir_sitearch,@@dir_bin,@@locale,@@default_dir,@@rc_path,@@yamlrc_path,@@ad_path
-      #note rbver is duplicated in Info_version
+      #note rbver is duplicated in InfoVersion
     end
   end
   class Load
@@ -280,7 +280,7 @@ module SiSU_Env
       load_prog
     end
   end
-  class Get_init < Info_system
+  class GetInit < InfoSystem
     include Singleton
     @@noyaml=false
     @@rc,@@sisurc_path,@@vz,@@tx=nil,nil,nil,nil
@@ -373,16 +373,16 @@ module SiSU_Env
       @@ad
     end
   end
-  class Env_call
+  class EnvCall
     @@rc,@@fns,@@fnn,@@fnb,@@fnt,@@flv,@@fnz=nil,nil,nil,nil,nil,nil,nil
     @@ad={}
     attr_accessor :rc,:fnn,:fnb,:fnt,:fnv,:fnz,:ad
     def initialize(fns='')
       super()
       @fns=fns
-      @sys=Info_system.instance
-      @rc=Get_init.instance.sisu_yaml.rc
-      @ad=Get_init.instance.ads
+      @sys=InfoSystem.instance
+      @rc=GetInit.instance.sisu_yaml.rc
+      @ad=GetInit.instance.ads
       if @fns \
       and @fns != '' \
       and @fns !=@@fns
@@ -472,8 +472,8 @@ module SiSU_Env
           @fn[:t]=filename[m,2]
         end
       end
-      lng_base=Info_env.new.language_default_set
-      lang=SiSU_Env::Standardise_language.new
+      lng_base=InfoEnv.new.language_default_set
+      lang=SiSU_Env::StandardiseLanguage.new
       langs=lang.codes
       x=[]
       if FileTest.file?("#{@fn[:m]}.#{@fn[:t]}")
@@ -483,7 +483,7 @@ module SiSU_Env
       end
       #x << { f: "#{@fns}", l: lng_base }
       langs.each do |l|
-        lng=SiSU_Env::Standardise_language.new(l)
+        lng=SiSU_Env::StandardiseLanguage.new(l)
         if FileTest.file?("#{@fn[:m]}~#{lng.code}.#{@fn[:t]}")
           x << { f: "#{@fn[:m]}~#{lng.code}.#{@fn[:t]}", l: lng.code }
         elsif FileTest.file?("#{@fn[:m]}~#{lng.name}.#{@fn[:t]}")
@@ -521,26 +521,26 @@ module SiSU_Env
           @fn[:t]=@fns[m,2]
         end
       end
-      lang=SiSU_Env::Standardise_language.new
+      lang=SiSU_Env::StandardiseLanguage.new
       langs=lang.codes
       x=[]
       if FileTest.file?("#{@fn[:m]}.#{@fn[:t]}"); x << "#{@fn[:m]}.#{@fn[:t]}"
       end
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       @m << { m: 'sisu_manifest.html', l: 'English' } #fix later, default language
       langs.each do |l|
-        lng=SiSU_Env::Standardise_language.new(l)
+        lng=SiSU_Env::StandardiseLanguage.new(l)
         fns_c="#{@fn[:m]}~#{lng.code}.#{@fn[:t]}"
         fns_l="#{@fn[:m]}~#{lng.name}.#{@fn[:t]}"
         if FileTest.file?(fns_c)
-          fn_set_lang=SiSU_Env::Standardise_language.new.file_to_language(fns_c) #reconsider file_to_language
+          fn_set_lang=SiSU_Env::StandardiseLanguage.new.file_to_language(fns_c) #reconsider file_to_language
           lng=fn_set_lang[:n]
-          fn=SiSU_Env::Env_call.new(fns_c).lang(fn_set_lang[:c])
+          fn=SiSU_Env::EnvCall.new(fns_c).lang(fn_set_lang[:c])
           @m << { m: fn[:manifest], l: lng }
         elsif FileTest.file?(fns_l)
-          fn_set_lang=SiSU_Env::Standardise_language.new.file_to_language(fns_l) #reconsider file_to_language
+          fn_set_lang=SiSU_Env::StandardiseLanguage.new.file_to_language(fns_l) #reconsider file_to_language
           @fnl=dir.i18n.lang_filename(fn_set_lang[:c])
-          fn=SiSU_Env::Env_call.new(fns_l).lang(fn_set_lang[:c])
+          fn=SiSU_Env::EnvCall.new(fns_l).lang(fn_set_lang[:c])
           @m << { m: fn[:manifest], l: lng }
         end
       end
@@ -548,7 +548,7 @@ module SiSU_Env
       @m
     end
     def filename(code,name,suffix)
-      #d=SiSU_Env::Info_env.new(@fns)
+      #d=SiSU_Env::InfoEnv.new(@fns)
       #fnl=d.i18n.lang_filename(code)
       "#{name}#{suffix}"
       #if code
@@ -604,12 +604,12 @@ module SiSU_Env
       @fn
     end
   end
-  class System_call
+  class SystemCall
     @@locale_flag=false
     def initialize(input='',output='',cmd='')
       @input,@output,@cmd=input,output,cmd
-      @prog=SiSU_Env::Info_program.new
-      @sys=Info_system.instance
+      @prog=SiSU_Env::InfoProgram.new
+      @sys=InfoSystem.instance
     end
     def program_found?(program)
       found=`whereis #{program}`
@@ -623,7 +623,7 @@ module SiSU_Env
     end
     def file_encoding(filename,cmd='')                                         #file encoding
       program='file'
-      fnsp=Info_env.new(filename).source_file_with_path
+      fnsp=InfoEnv.new(filename).source_file_with_path
       if program_found?(program)
         encoding=%x{file -L #{fnsp}}.strip
         encoding.gsub!(/#{fnsp}:(\s+|$)/,'')
@@ -846,11 +846,11 @@ module SiSU_Env
       end
     end
   end
-  class Standardise_language
+  class StandardiseLanguage
     require_relative 'i18n'                  # i18n.rb
     def initialize(l='')
       @language=(l.nil? || l.empty?) \
-      ? Info_env.new.language_default_set
+      ? InfoEnv.new.language_default_set
       : l
       @r=%{(?:#{Px[:lng_lst].join('|')})}
       @lang_info=SiSU_i18n::Languages.new
@@ -962,7 +962,7 @@ module SiSU_Env
       Px[:lng_lst] # constants.rb
     end
   end
-  class Info_env < Env_call
+  class InfoEnv < EnvCall
     require 'pathname'
     require 'fileutils'
       include FileUtils
@@ -972,7 +972,7 @@ module SiSU_Env
     def initialize(fns='',md=nil)
       super() #you may not want to re-execute this static info so frequently!
       @fns,@md=fns,md
-      @env=Env_call.new(fns) if fns
+      @env=EnvCall.new(fns) if fns
       fnb=if @md \
       and defined? @md.fnb
         @md.fnb
@@ -986,7 +986,7 @@ module SiSU_Env
       end
       if fnb; @@fb ||=fnb
       end
-      @sys=Info_system.instance
+      @sys=InfoSystem.instance
       @fnb ||=@@fb #clean up this... used primarily for zap which is not passed normal parameters
       @fixed_websev_root='' # @home
       @pwd=@@pwd=Dir.pwd
@@ -1116,7 +1116,7 @@ module SiSU_Env
         FileUtils::rm_rf(spp)
       end
       paths=[]
-      flv=Env_call.new(opt.fns).document_language_versions_found
+      flv=EnvCall.new(opt.fns).document_language_versions_found
       flv[:f].each {|l| lng_dirs << l[:l] }
       lng_dirs.uniq!
       lng_dirs.each do |lng|
@@ -1208,9 +1208,9 @@ module SiSU_Env
       : false
     end
     def widget #needs (md) #move
-      @rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
-      @ad=SiSU_Env::Get_init.instance.ads
-      @vz=SiSU_Env::Get_init.instance.skin
+      @rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
+      @ad=SiSU_Env::GetInit.instance.ads
+      @vz=SiSU_Env::GetInit.instance.skin
       @flag={ ad: false, md: false, sk: false, rc: false }
       def promo?
         @flag[:ad]=if @md.flag_promo && @ad[:flag_promo]
@@ -1283,7 +1283,7 @@ module SiSU_Env
         end
       end
       def search_form(type='sisusearch',action=nil,db=nil,table=false)
-        rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
+        rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
         create_form_sisu=if action \
         and db \
         and action =~/https?:\/\// \
@@ -1339,7 +1339,7 @@ WOK
         form
       end
       def search_form_static(action=nil,db=nil)
-        rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
+        rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
         create_form=if rc['search']['sisu']['flag']==true \
         and action \
         and db \
@@ -1387,8 +1387,8 @@ WOK
       self
     end
     def widget_static
-      @rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
-      @vz=SiSU_Env::Get_init.instance.skin
+      @rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
+      @vz=SiSU_Env::GetInit.instance.skin
       @flag={ ad: false, md: false, sk: false, rc: false }
       def search?
         flag=if defined? @rc['search'] \
@@ -1435,7 +1435,7 @@ WOK
         end
       end
       def search_form(action=nil,db=nil)
-        rc=SiSU_Env::Get_init.instance.sisu_yaml.rc
+        rc=SiSU_Env::GetInit.instance.sisu_yaml.rc
         create_form=if defined? rc['search']['sisu']['flag'] \
         and rc['search']['sisu']['flag']==true \
         and action \
@@ -1626,7 +1626,7 @@ WOK
         @sys.home
       end
       def sisurc_path
-        Get_init.instance.sisu_yaml.rc_path
+        GetInit.instance.sisu_yaml.rc_path
       end
       def pwd
         @sys.pwd
@@ -1689,7 +1689,7 @@ WOK
         @sys.rc_path
       end
       def yamlrc
-        Get_init.instance.sisu_yaml.rc_path
+        GetInit.instance.sisu_yaml.rc_path
       end
       def man #check use
         (defined? @rc['webserv']['man']) \
@@ -2437,7 +2437,7 @@ WOK
         elsif conf; @rc['default']['language']                                  #3 config: from sisurc.yaml
         else                                      defaults[:language]          #4 sisu: program default
         end                                                                     #1 document: param gets
-        SiSU_Env::Standardise_language.new(l)
+        SiSU_Env::StandardiseLanguage.new(l)
       end
       #def multilingual
       #  x=(defined? @rc['output_structure']['multilingual'] \
@@ -2511,7 +2511,7 @@ WOK
       end
       if f_pod \
       && FileTest.file?(f_pod)
-        tree=(SiSU_Env::System_call.new.program_found?('tree')) \
+        tree=(SiSU_Env::SystemCall.new.program_found?('tree')) \
         ? "tree #{processing_path.processing}/sisupod"
         : ''
         if FileTest.directory?(processing_path.processing)
@@ -2541,10 +2541,10 @@ WOK
       sisupod_processing_path
     end
   end
-  class Info_processing_flag
+  class InfoProcessingFlag
     attr_accessor :color,:cf_0,:cf_1,:cf_2,:cf_3,:cf_4,:cf_5
     def initialize
-      @rc=Get_init.instance.sisu_yaml.rc
+      @rc=GetInit.instance.sisu_yaml.rc
     end
     def color                                                                  #processing flag shortcuts
       (defined? @rc['flag']['color']) ? @rc['flag']['color'] : false
@@ -2598,7 +2598,7 @@ WOK
       end
     end
   end
-  class Info_settings < Info_env
+  class InfoSettings < InfoEnv
     def permission?(prog)                                                      #program defaults
       (defined? @rc['permission_set'][prog]) \
       ? @rc['permission_set'][prog]
@@ -2610,14 +2610,14 @@ WOK
       : false
     end
   end
-  class File_map < Info_env
+  class FileMap < InfoEnv
     attr_accessor :local_sisu_source
     def initialize(opt='') #watch / REVIEW
       super()
       @opt=opt #,opt.fns,opt.cmd
       @env=(@opt.fns && !(@opt.fns.empty?) \
-      ? (SiSU_Env::Info_env.new(@opt.fns))
-      : (SiSU_Env::Info_env.new('dummy.sst')))
+      ? (SiSU_Env::InfoEnv.new(@opt.fns))
+      : (SiSU_Env::InfoEnv.new('dummy.sst')))
       if @opt.cmd =~/m/; @md=SiSU_Param::Parameters.new(@opt).get
       end
       ft=[]
@@ -2735,19 +2735,19 @@ WOK
       : @source_path
     end
   end
-  class Clean_output
+  class CleanOutput
     require 'fileutils'
       include FileUtils::Verbose
     def initialize(opt)
       @opt=opt
-      z=File_map.new(@opt)
+      z=FileMap.new(@opt)
       @zap=z.local_sisu_source
       if @opt.cmd =~ /[hH]/
         @zap=Dir.glob(@zap).join(' ')
         if @opt.cmd !~ /w/; @zap.gsub!(/#{@source_path}\/concordance.html/,'')
         end
       end
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def zap
       def main_output
@@ -2781,11 +2781,11 @@ WOK
       self
     end
   end
-  class Info_remote_host
+  class InfoRemoteHost
     def initialize
-      @rc=Get_init.instance.sisu_yaml.rc
+      @rc=GetInit.instance.sisu_yaml.rc
     end
-    def remote_host #see Info_remote remote_host_base_general
+    def remote_host #see InfoRemote remote_host_base_general
       r=[]
       r=if (defined? @rc['remote'] \
       and @rc['remote'].class==Array)
@@ -2829,48 +2829,48 @@ WOK
     end
     def rhost
       def r1
-        (defined? SiSU_Env::Info_remote_host.new.remote_host[0][:name]) \
-        ? (SiSU_Env::Info_remote_host.new.remote_host[0][:name])
+        (defined? SiSU_Env::InfoRemoteHost.new.remote_host[0][:name]) \
+        ? (SiSU_Env::InfoRemoteHost.new.remote_host[0][:name])
         : nil
       end
       def r2
-        (defined? SiSU_Env::Info_remote_host.new.remote_host[1][:name]) \
-        ? (SiSU_Env::Info_remote_host.new.remote_host[1][:name])
+        (defined? SiSU_Env::InfoRemoteHost.new.remote_host[1][:name]) \
+        ? (SiSU_Env::InfoRemoteHost.new.remote_host[1][:name])
         : nil
       end
       def r3
-        (defined? SiSU_Env::Info_remote_host.new.remote_host[2][:name]) \
-        ? (SiSU_Env::Info_remote_host.new.remote_host[2][:name])
+        (defined? SiSU_Env::InfoRemoteHost.new.remote_host[2][:name]) \
+        ? (SiSU_Env::InfoRemoteHost.new.remote_host[2][:name])
         : nil
       end
       def r4
-        (defined? SiSU_Env::Info_remote_host.new.remote_host[3][:name]) \
-        ? (SiSU_Env::Info_remote_host.new.remote_host[3][:name])
+        (defined? SiSU_Env::InfoRemoteHost.new.remote_host[3][:name]) \
+        ? (SiSU_Env::InfoRemoteHost.new.remote_host[3][:name])
         : nil
       end
       def r5
-        (defined? SiSU_Env::Info_remote_host.new.remote_host[4][:name]) \
-        ? (SiSU_Env::Info_remote_host.new.remote_host[4][:name])
+        (defined? SiSU_Env::InfoRemoteHost.new.remote_host[4][:name]) \
+        ? (SiSU_Env::InfoRemoteHost.new.remote_host[4][:name])
         : nil
       end
       def r6
-        (defined? SiSU_Env::Info_remote_host.new.remote_host[5][:name]) \
-        ? (@ls + SiSU_Env::Info_remote_host.new.remote_host[5][:name])
+        (defined? SiSU_Env::InfoRemoteHost.new.remote_host[5][:name]) \
+        ? (@ls + SiSU_Env::InfoRemoteHost.new.remote_host[5][:name])
          : nil
       end
       self
     end
   end
-  class Info_remote < File_map
+  class InfoRemote < FileMap
     @@flag_remote=false
     require 'socket'
     def initialize(opt)
       super(opt) #
       @opt=opt
-      @rc=Get_init.instance.sisu_yaml.rc
+      @rc=GetInit.instance.sisu_yaml.rc
     end
     def remote_host_base_general
-      SiSU_Env::Info_remote_host.new.remote_host
+      SiSU_Env::InfoRemoteHost.new.remote_host
     end
     def remote_host_base
       remote_host_base_general.each do |remote_conn|
@@ -2901,15 +2901,15 @@ WOK
           and remote_gen !~/\/\//) \
           and @@flag_remote==true \
           and @opt.cmd !~/U/
-            System_call.new(local_gen,remote_gen).scp
+            SystemCall.new(local_gen,remote_gen).scp
             if FileTest.file?("#{local_src}/#{src_txt}")
-              System_call.new("#{local_src}/#{src_txt}",remote_src).scp
+              SystemCall.new("#{local_src}/#{src_txt}",remote_src).scp
             end
             if FileTest.file?("#{local_pod}/#{src_pod}")
-              System_call.new("#{local_src}/#{src_pod}",remote_pod).scp
+              SystemCall.new("#{local_src}/#{src_pod}",remote_pod).scp
             end
             if FileTest.file?("#{local_epub}/#{@opt.fnb}.epub")
-              System_call.new("#{local_epub}/#{@opt.fnb}.epub",remote_epub,@opt.cmd).scp
+              SystemCall.new("#{local_epub}/#{@opt.fnb}.epub",remote_epub,@opt.cmd).scp
             end
           elsif  @opt.cmd =~/U/
             puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
@@ -2936,7 +2936,7 @@ WOK
           and @@flag_remote==true \
           and @opt.cmd !~/U/
             puts "begin scp_base: #{local} -> #{remote}"
-            System_call.new("#{local}/#{@env.path.style}/",remote).scp
+            SystemCall.new("#{local}/#{@env.path.style}/",remote).scp
           elsif @opt.cmd =~/U/
             puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
             puts "begin scp_base: #{local} -> #{remote}"
@@ -2954,9 +2954,9 @@ WOK
           and @@flag_remote==true \
           and @opt.cmd !~/U/
             puts "begin scp_base_all: #{local} -> #{remote}"
-            System_call.new("#{local}/_sisu/image_sys/",remote).scp
-            System_call.new("#{local}/_sisu/image/",remote).scp
-            System_call.new("#{local}/#{@env.path.style}/",remote).scp
+            SystemCall.new("#{local}/_sisu/image_sys/",remote).scp
+            SystemCall.new("#{local}/_sisu/image/",remote).scp
+            SystemCall.new("#{local}/#{@env.path.style}/",remote).scp
           elsif @opt.cmd =~/U/
             puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
             puts "scp_base_all: #{local} -> #{remote}"
@@ -2970,7 +2970,7 @@ WOK
       self
     end
     def images_from_skin
-      skin=Info_skin.new(@md).select
+      skin=InfoSkin.new(@md).select
       skin_array=nil
       skin_images_array=[]
       if skin
@@ -3001,7 +3001,7 @@ WOK
           and remote_gen !~/\/\//) \
           and @@flag_remote==true \
           and @opt.cmd !~/U/
-#           System_call.new("#{local_src}/#{src_txt}",remote_src,@opt.cmd).rsync
+#           SystemCall.new("#{local_src}/#{src_txt}",remote_src,@opt.cmd).rsync
             delete_extra_files='--delete' # '--delete-after'
             inp=[]
             if (@opt.cmd =~/h/ \
@@ -3108,13 +3108,13 @@ WOK
               ##create file structure without copying files?:
               ##rsync -av -f"+ */" -f"- *" @f.output_path.base.dir remote:./path/.
               #local_dirs=%{-f"+ */" -f"- *" #{@f.output_path.base.dir}/*}
-              #System_call.new(local_dirs,remote_gen,@opt.cmd).rsync
+              #SystemCall.new(local_dirs,remote_gen,@opt.cmd).rsync
               local=local_gen + ' ' + images + ' ' + images_skin + ' ' + images_system + ' ' + local_css
-              System_call.new(local,remote_rel,@opt.cmd).rsync('--relative',@f.output_path.base.dir)
+              SystemCall.new(local,remote_rel,@opt.cmd).rsync('--relative',@f.output_path.base.dir)
             rescue
               p __LINE__.to_s + ':' + __FILE__
               local_dirs=%{--include='*/' --exclude='*' #{@f.output_path.base.dir}}
-              System_call.new(local_dirs,remote_gen,@opt.cmd).rsync
+              SystemCall.new(local_dirs,remote_gen,@opt.cmd).rsync
             end
           elsif @opt.cmd =~/U/
             puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
@@ -3141,9 +3141,9 @@ WOK
           and @rc['permission_set']['remote_base_site'] \
           and @@flag_remote==true \
           and @opt.cmd !~/U/
-            System_call.new("#{image_sys}","#{remote_conf}").rsync
-            System_call.new("#{images}","#{remote_conf}").rsync
-            System_call.new("#{ldest}","#{remote}").rsync
+            SystemCall.new("#{image_sys}","#{remote_conf}").rsync
+            SystemCall.new("#{images}","#{remote_conf}").rsync
+            SystemCall.new("#{ldest}","#{remote}").rsync
           elsif @opt.cmd =~/U/
             puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
             puts "rsync_base: #{local} -> #{remote}"
@@ -3164,9 +3164,9 @@ WOK
           and @opt.cmd !~/U/
             delete_extra_files='--delete' # '--delete-after'
             puts "begin rsync_base_sync: #{local} -> #{remote}"
-            System_call.new("#{local}/_sisu/image_sys/",remote).rsync(delete_extra_files)
-            System_call.new("#{local}/_sisu/image/",remote).rsync(delete_extra_files)
-            System_call.new("#{local}/#{@env.path.style}/",remote).rsync(delete_extra_files)
+            SystemCall.new("#{local}/_sisu/image_sys/",remote).rsync(delete_extra_files)
+            SystemCall.new("#{local}/_sisu/image/",remote).rsync(delete_extra_files)
+            SystemCall.new("#{local}/#{@env.path.style}/",remote).rsync(delete_extra_files)
           elsif @opt.cmd =~/U/
             puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
             puts "rsync_base_sync: #{local} -> #{remote}"
@@ -3185,7 +3185,7 @@ WOK
         remote="#{remote_conn[:name]}/#{@env.path.stub_pwd}/."
         if @@flag_remote
           delete_extra_files='--delete' # '--delete-after'
-          System_call.new(local,remote).rsync(delete_extra_files)
+          SystemCall.new(local,remote).rsync(delete_extra_files)
         elsif @opt.cmd =~/U/
           puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
           puts "rsync_sitemaps: #{local} -> #{remote}"
@@ -3199,7 +3199,7 @@ WOK
         remote="#{remote_conn[:name]}/#{@env.path.stub_pwd}/."
         if @@flag_remote
           delete_extra_files='--delete' # '--delete-after'
-          System_call.new(local,remote).rsync(delete_extra_files)
+          SystemCall.new(local,remote).rsync(delete_extra_files)
         elsif @opt.cmd =~/U/
           puts "#{__FILE__} #{__LINE__}" if @opt.cmd =~/M/
           puts "rsync_sitemaps: #{local} -> #{remote}"
@@ -3208,7 +3208,7 @@ WOK
       end
     end
   end
-  class Info_version <Info_env
+  class InfoVersion <InfoEnv
     include Singleton
     require 'rbconfig'
     @@lib_path=nil
@@ -3226,11 +3226,11 @@ WOK
       %x{ruby -v}.strip
     end
   end
-  class Create_system_link                                                      #revisit problems created 2004w41
+  class CreateSystemLink                                                      #revisit problems created 2004w41
     require 'fileutils'
       include FileUtils::Verbose
     def initialize
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def images
       unless FileTest.directory?("#{@env.path.output}/_sisu")
@@ -3248,12 +3248,12 @@ WOK
       #File.symlink("../../man/form", "#{@env.path.output}/man/pdf") unless File.symlink?("#{@env.path.output}/man/pdf")==true
     end
   end
-  class Info_file <Info_env                                                  #todo unify with FileOp
+  class InfoFile <InfoEnv                                                  #todo unify with FileOp
     def initialize(fns)
       begin
         super(fns)
         @fns=fns
-        @env=SiSU_Env::Info_env.new(@fns)
+        @env=SiSU_Env::InfoEnv.new(@fns)
         m=/((.+?)(?:\~\w\w(?:_\w\w)?)?)\.((?:-|ssm\.)?sst|ssm)$/ #watch added match for sss
         @fnn,@fnb,@fnt=@fns[m,1],@fns[m,2],@fns[m,3]
       rescue; STDERR.puts SiSU_Screen::Ansi.new(@fns,$!,$@).rescue
@@ -3326,11 +3326,11 @@ WOK
       end
     end
   end
-  class FileOp <Info_file                                                    #todo unify with Create_file
+  class FileOp <InfoFile                                                    #todo unify with CreateFile
     def initialize(md,fno='')
       begin
         @md,@fno=md,fno
-        @env=SiSU_Env::Info_env.new(@md.fns)
+        @env=SiSU_Env::InfoEnv.new(@md.fns)
       rescue; STDERR.puts SiSU_Screen::Ansi.new(@cmd,$!,$@).rescue
       ensure
       end
@@ -4726,11 +4726,11 @@ WOK
       self
     end
   end
-  class Create_file <Info_env                                                  #todo unify with FileOp
+  class CreateFile <InfoEnv                                                  #todo unify with FileOp
     def initialize(fns)
       begin
         super(fns)
-        @env=SiSU_Env::Info_env.new(fns)
+        @env=SiSU_Env::InfoEnv.new(fns)
       rescue; STDERR.puts SiSU_Screen::Ansi.new(@fns,$!,$@).rescue
       ensure
       end
@@ -4808,13 +4808,13 @@ WOK
       File.new("#{@env.processing_path.texinfo}/#{@fnb}.texinfo",'w+')
     end
   end
-  class Clear <Info_env                                                  #todo unify with FileOp
+  class Clear <InfoEnv                                                  #todo unify with FileOp
     def initialize(cmd,fns,operation='')
       @cmd=cmd
       begin
         super(fns)
-        @env=SiSU_Env::Info_env.new(fns)
-        ver=Info_version.instance
+        @env=SiSU_Env::InfoEnv.new(fns)
+        ver=InfoVersion.instance
         if operation.class.inspect =~/SiSU_Param/
           @md=operation
         end
@@ -4838,25 +4838,25 @@ WOK
     end
     def param_instantiate
       @cX||=SiSU_Screen::Ansi.new(@cmd)
-      @@date=Info_date.new
+      @@date=InfoDate.new
       @@proc=@@filename_txt=@@filename_texinfo=@@filename_lout_portrait=@@filename_lout_landscape=@@filename_html_scroll=@@filename_html_index=@@filename_html_segtoc=@@filename_semantic=@@filename_rss=@@newfile=@@drr=@@yaml=@@yamladdr=nil
       @@publisher='SiSU scribe'
     end
   end
-  class Info_db < Info_env
+  class InfoDb < InfoEnv
     @@rc=nil
     def initialize
       @@pwd ||=Dir.pwd
       @pwd=Dir.pwd
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
       #m=/.+\/(?:src\/)?(\S+)/m # m=/.+?\/(?:src\/)?([^\/]+)$/im # m=/.+\/(\S+)/m
       #@pwd_stub=@pwd[m,1]
       pt=Pathname.new(@pwd)
       r=Px[:lng_lst].join('|')
       u=/.+?\/([^\/]+)(?:\/(?:#{r})$|$)/
       @pwd_stub=pt.realpath.to_s[u,1]
-      @rc=@@rc ||=Get_init.instance.sisu_yaml.rc
-      @defaults=Info_env.new.defaults
+      @rc=@@rc ||=GetInit.instance.sisu_yaml.rc
+      @defaults=InfoEnv.new.defaults
     end
     def share_source?
       ((defined? @rc['db']['share_source']) \
@@ -4943,22 +4943,22 @@ WOK
       self
     end
   end
-  class Info_port < Info_env
+  class InfoPort < InfoEnv
     def initialize
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def webrick
       @env.url.webrick_port
     end
   end
-  class Info_program < Info_env                                                #revisit
+  class InfoProgram < InfoEnv                                                #revisit
     attr_accessor :editor,:wc,:tidy,:rexml,:pdflatex,:postgresql,:sqlite
     def initialize
-      prog=SiSU_Env::Info_env.new.program
+      prog=SiSU_Env::InfoEnv.new.program
       @editor,@wc,@tidy,@rexml,@pdflatex,@postgresql,@sqlite=prog.text_editor,prog.wc,prog.tidy,prog.rexml,prog.pdflatex,prog.postgresql,prog.sqlite
     end
   end
-  class Info_skin
+  class InfoSkin
     def initialize(md=nil,skin=nil)
       @md=md
       @d_sk=if skin.class==String ; skin
@@ -4970,7 +4970,7 @@ WOK
       @home,@pwd=ENV['HOME'],ENV['PWD']
       m=/.+\/(?:src\/)?(\S+)/m # m=/.+?\/(?:src\/)?([^\/]+)$/im # m=/.+\/(\S+)/m
       @pwd_stub=@pwd[m,1]
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def select                                                                 # skin loading logic here
       load "#{SiSU_lib}/defaults.rb"
@@ -5016,7 +5016,7 @@ WOK
       end
     end
   end
-  class CSS_default
+  class CSS_Default
     def html
       'html.css'
     end
@@ -5042,10 +5042,10 @@ WOK
       'harvest.css'
     end
   end
-  class CSS_select < Info_env
+  class CSS_Select < InfoEnv
     def initialize(md)
       @md=md
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
     end
     def html
       css=if @md.doc_css \
@@ -5053,7 +5053,7 @@ WOK
         "#{@md.doc_css}_html.css"
       elsif FileTest.file?("#{@env.path.output}/#{@env.path.style}/#{@env.path.stub_pwd}_html.css")
         "#{@env.path.stub_pwd}_html.css"
-      else CSS_default.new.html
+      else CSS_Default.new.html
       end
     end
     def html_tables
@@ -5062,7 +5062,7 @@ WOK
         "#{@md.doc_css}_html_tables.css"
       elsif FileTest.file?("#{@env.path.output}/#{@env.path.style}/#{@env.path.stub_pwd}_html_tables.css")
         "#{@env.path.stub_pwd}_html_tables.css"
-      else CSS_default.new.html_tables
+      else CSS_Default.new.html_tables
       end
     end
     def xhtml
@@ -5071,7 +5071,7 @@ WOK
         "#{@md.doc_css}_xhtml.css"
       elsif FileTest.file?("#{@env.path.output}/#{@env.path.style}/#{@env.path.stub_pwd}_xhtml.css")
         "#{@env.path.stub_pwd}_xhtml.css"
-      else CSS_default.new.xhtml
+      else CSS_Default.new.xhtml
       end
     end
     def xml_sax
@@ -5080,7 +5080,7 @@ WOK
         "#{@md.doc_css}_xml_sax.css"
       elsif FileTest.file?("#{@env.path.output}/#{@env.path.style}/#{@env.path.stub_pwd}_xml_sax.css")
         "#{@env.path.stub_pwd}_xml_sax.css"
-      else CSS_default.new.xml_sax
+      else CSS_Default.new.xml_sax
       end
     end
     def xml_dom
@@ -5089,7 +5089,7 @@ WOK
         "#{@md.doc_css}_xml_dom.css"
       elsif FileTest.file?("#{@env.path.output}/#{@env.path.style}/#{@env.path.stub_pwd}_xml_dom.css")
         "#{@env.path.stub_pwd}_xml_dom.css"
-      else CSS_default.new.xml_dom
+      else CSS_Default.new.xml_dom
       end
     end
     def docbook_xml
@@ -5098,7 +5098,7 @@ WOK
         "#{@md.doc_css}_xml_dom.css"
       elsif FileTest.file?("#{@env.path.output}/#{@env.path.style}/#{@env.path.stub_pwd}_docbook.css")
         "#{@env.path.stub_pwd}_docbook.css"
-      else CSS_default.new.docbook_xml
+      else CSS_Default.new.docbook_xml
       end
     end
     def homepage
@@ -5107,15 +5107,15 @@ WOK
         "#{@md.doc_css}_homepage.css"
       elsif FileTest.file?("#{@env.path.output}/#{@env.path.style}/#{@env.path.stub_pwd}_homepage.css")
         "#{@env.path.stub_pwd}_homepage.css"
-      else CSS_default.new.homepage
+      else CSS_Default.new.homepage
       end
     end
   end
-  class CSS_stylesheet
+  class CSS_Stylesheet
     def initialize(md)
       @md=md
-      @css=CSS_select.new(@md)
-      @env=SiSU_Env::Info_env.new
+      @css=CSS_Select.new(@md)
+      @env=SiSU_Env::InfoEnv.new
       @file=SiSU_Env::FileOp.new(@md)
     end
     def html
@@ -5143,15 +5143,15 @@ WOK
       %{<?xml-stylesheet type="text/css" href="#{@file.path_rel_links.xml_css}#{@env.path.style}/#{@css.xml_dom}"?>}
     end
   end
-  class Create_site < Info_env
+  class CreateSite < InfoEnv
     require_relative 'css'                              # css.rb
       include SiSU_Style
     def initialize(cmd)
       @cmd=cmd
-      @env=SiSU_Env::Info_env.new
+      @env=SiSU_Env::InfoEnv.new
       @home,@pwd=ENV['HOME'],ENV['PWD'] #@pwd=Dir.pwd
-      @rc=Get_init.instance.sisu_yaml.rc
-      @vz=SiSU_Env::Get_init.instance.skin
+      @rc=GetInit.instance.sisu_yaml.rc
+      @vz=SiSU_Env::GetInit.instance.skin
       @vz_home=SiSU_Viz::Home.new
     end
     def homepage
@@ -5240,7 +5240,7 @@ WOK
         end
       else SiSU_Screen::Ansi.new(@cmd,"modify css is not set or is set to: false").warn if @cmd=~/[MV]/
       end
-      fn_css=SiSU_Env::CSS_default.new
+      fn_css=SiSU_Env::CSS_Default.new
       css=SiSU_Style::CSS.new
       path_style="#{@env.path.output}/#{@env.path.style}"
       FileUtils::mkdir_p(path_style) unless FileTest.directory?(path_style)
diff --git a/lib/sisu/v3dv/termsheet.rb b/lib/sisu/v3dv/termsheet.rb
index aca9e00e..3ac2515b 100644
--- a/lib/sisu/v3dv/termsheet.rb
+++ b/lib/sisu/v3dv/termsheet.rb
@@ -70,7 +70,7 @@ def talent(termsheet,flag)
   no_ocn='0' if flag =~/0/ #flag to request switch off of text object numbering
   @@info=nil
   @@info=termsheet.gsub(/(.+?)\.termsheet\.rb/,'../facility_data/\1.html')
-  @env=SiSU_Env::Info_env.new
+  @env=SiSU_Env::InfoEnv.new
   @dir_fd="#{@env.path.output}/facility_data"
   FileUtils::mkdir_p(@dir_fd) unless FileTest.directory?(@dir_fd)==true
   html_output=[]
@@ -130,7 +130,7 @@ if @proc =~  /^-?[wft]/
     talent(termsheet,@proc)
   end
 end
-@env=SiSU_Env::Info_env.new
+@env=SiSU_Env::InfoEnv.new
 @dir_fd="#{@env.path.output}/facility_data"
 @url="#{@env.url.webserv}/facility_data"
 @@report << %{\n#{@@cX.grey}See#{@@cX.off}: #{@@cX.blue}#{@dir_fd}/all.txt\t#{@dir_fd}/toc.html\t#{@dir_fd}/#{@@cX.off}\n\n#{@@cX.grey}See#{@@cX.off}: #{@@cX.blue}#{@url}/all.txt\t#{@url}/toc.html\t#{@url}/#{@@cX.off}\n\n}
diff --git a/lib/sisu/v3dv/texinfo.rb b/lib/sisu/v3dv/texinfo.rb
index 9961171e..45af0550 100644
--- a/lib/sisu/v3dv/texinfo.rb
+++ b/lib/sisu/v3dv/texinfo.rb
@@ -78,8 +78,8 @@ module SiSU_TexInfo
     def initialize(opt)
       @opt=opt
       @md=SiSU_Param::Parameters.new(@opt).get
-      @env=SiSU_Env::Info_env.new(@opt.fns)
-      @vz=SiSU_Env::Get_init.instance.skin
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def directories
       begin
@@ -107,7 +107,7 @@ module SiSU_TexInfo
         tell
         @md=SiSU_Param::Parameters.new(@opt).get
         directories
-        @marshalfile=SiSU_Env::Info_file.new(@opt.fns).marshal.dal_content
+        @marshalfile=SiSU_Env::InfoFile.new(@opt.fns).marshal.dal_content
         if FileTest.file?(@marshalfile)==true
           File.open(@marshalfile) { |f| @@tuned_file=Marshal.load(f)}
           #tell.meta_verse_skipped if @opt.cmd =~/[vVM]/
@@ -116,14 +116,14 @@ module SiSU_TexInfo
           SiSU_Metaverse.songsheet(tex_array)
         end
         tex_array=@@tuned_file
-        Texinfo_make.new(@md,tex_array).songsheet
+        TeXinfoMake.new(@md,tex_array).songsheet
         tex_array=''
       rescue; STDERR.puts SiSU_Screen::Ansi.new(@opt.cmd,$!,$@).rescue
       ensure
       end
     end
   end
-  class Texinfo_make
+  class TeXinfoMake
     include SiSU_Param
     include SiSU_TexInfoFormat
     @@tex_1='(?:.+?)+~' #?? debug
@@ -131,8 +131,8 @@ module SiSU_TexInfo
     @@tex_pattern_margin_number="\\\\marginpar.+?\s+"
     def initialize(md,data)
       @md,@data=md,data
-      @env=SiSU_Env::Info_env.new(@md.fns)
-      @vz=SiSU_Env::Get_init.instance.skin
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
+      @vz=SiSU_Env::GetInit.instance.skin
       @f=SiSU_Env::FileOp.new(@md)
     end
     def songsheet
@@ -301,14 +301,14 @@ module SiSU_TexInfo
             n_submenu+=1
             @@do_subsubmenu=1
             if @@do_submenu==1
-              menu=SiSU_TexInfoFormat::Texinfo_txt.new(@md,dob,@submenu[n_menu])
+              menu=SiSU_TexInfoFormat::TeXinfoTxt.new(@md,dob,@submenu[n_menu])
               dob.obj="#{menu.submenu}#{mono.level5.obj}"
               @@do_submenu=0
             else mono.level5
             end
           when 6;
             if @@do_submenu==1
-              menu=SiSU_TexInfoFormat::Texinfo_txt.new(@md,dob,@submenu[n_menu])
+              menu=SiSU_TexInfoFormat::TeXinfoTxt.new(@md,dob,@submenu[n_menu])
               dob.obj="#{menu.subsubmenu}#{mono.level6.obj}"
               @@do_subsubmenu=0
             else
@@ -378,9 +378,9 @@ module SiSU_TexInfo
         pwd=Dir.pwd
         case sfx
         when /(?:-|ssm\.)?sst$/
-          @env=SiSU_Env::Info_env.new(@md.fns,@md.opt.cmd)
+          @env=SiSU_Env::InfoEnv.new(@md.fns,@md.opt.cmd)
           Dir.chdir(@env.processing_path.texi)
-          texinfo=SiSU_Env::System_call.new("#{fnb}.texinfo")
+          texinfo=SiSU_Env::SystemCall.new("#{fnb}.texinfo")
           texinfo.makeinfo
         end
         Dir.chdir(pwd)
diff --git a/lib/sisu/v3dv/texinfo_format.rb b/lib/sisu/v3dv/texinfo_format.rb
index 1f0c94f9..fc7ffde2 100644
--- a/lib/sisu/v3dv/texinfo_format.rb
+++ b/lib/sisu/v3dv/texinfo_format.rb
@@ -74,7 +74,7 @@ module SiSU_TexInfoFormat
         p dob.class
         p caller
       end
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def head
       t=Time.now
@@ -95,7 +95,7 @@ module SiSU_TexInfoFormat
       author=@md.author if @md.author
       author ||=''
       author.gsub!(/[\*]/,'') #if author
-      v=SiSU_Env::Info_version.instance.get_version
+      v=SiSU_Env::InfoVersion.instance.get_version
       head =<<WOK
 \\input texinfo   @c -*-texinfo-*-
 @comment $Id$
@@ -509,12 +509,12 @@ WOK
       @dob
     end
     def graphics
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       @dob.obj.gsub!(/<::\s+(\S+?)\s+>/i, #watch
         "\\includegraphics*[width=11pt]{#{dir.path.image_source_include}/c_\\1.png}")
     end
     def image
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       width="100"
       width=@dob[/<:image.+?width=``(\d+)''.+?>/im,1]
       width=width.to_i*0.4
@@ -545,7 +545,7 @@ WOK
         caption="{\\\\\\\ \n\\begin{scriptsize}#{c}\\end{scriptsize}&}" if c
       end
       if image
-        dir=SiSU_Env::Info_env.new(@md.fns)
+        dir=SiSU_Env::InfoEnv.new(@md.fns)
         @dob.obj.gsub!(/#{Mx[:lnk_o]}\S+\.(png|jpg|gif).+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/, # fragile match operator\\ fragile !
           "\n\\href{#{url}}{\\includegraphics*[width=#{width}pt]{#{dir.path.image_source_include}/#{image}}}#{caption}")
       else
@@ -554,7 +554,7 @@ WOK
       end
     end
   end
-  class Texinfo_txt
+  class TeXinfoTxt
     def initialize(md,dob,txt)
       @md,@dob,@txt=md,dob,txt
     end
diff --git a/lib/sisu/v3dv/texpdf.rb b/lib/sisu/v3dv/texpdf.rb
index aae3b1d5..f4a18f0d 100644
--- a/lib/sisu/v3dv/texpdf.rb
+++ b/lib/sisu/v3dv/texpdf.rb
@@ -72,7 +72,7 @@ module SiSU_TeX
   @@tex_debug_counter=@@table_pagebreak_counter=@@tex_footnote_call_counter=@@tex_table_flag=@@tex_counter=@@tex_column=@@tex_columns=@@tex_columns=@@counting=0
   @@tex_pattern_margin_number=/\\\\begin\\\{tiny\\\}\\\\hspace\\\{0mm\\\}\\\\end\\\{tiny\\\}\\\{\\\\marginpar.+?\s+/
   @@n=@@tableheader=@@rights=nil
-  @@date ||=SiSU_Env::Info_date.new
+  @@date ||=SiSU_Env::InfoDate.new
   class Source
     require 'pstore'
     require_relative 'sysenv'                           # sysenv.rb
@@ -83,9 +83,9 @@ module SiSU_TeX
     include SiSU_TeX
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
       @md=@particulars.md
-      @env=SiSU_Env::Info_env.new(@md.fns) #@env=@particulars.env
+      @env=SiSU_Env::InfoEnv.new(@md.fns) #@env=@particulars.env
     end
     def directories
       begin
@@ -94,7 +94,7 @@ module SiSU_TeX
           SiSU_Env::FileOp.new(@md).mkdir
           Dir.mkdir(@env.processing_path.tex) unless FileTest.directory?(@env.processing_path.tex)
         end
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -114,14 +114,14 @@ module SiSU_TeX
         $flag=@md.opt.cmd                                                          #introduced to pass 0 for no object citation numbers... to texpdf_format
         directories
                                                                                #% needed needs to be reprogrammed !!!
-        SiSU_Env::Info_skin.new(@md).select
+        SiSU_Env::InfoSkin.new(@md).select
         dal_array=SiSU_DAL::Source.new(@opt).get # dal file drawn here
-        SiSU_TeX::Source::LaTeX_create.new(@particulars).songsheet
+        SiSU_TeX::Source::LaTeXcreate.new(@particulars).songsheet
         dal_array=''
         pwd=Dir.pwd
-        SiSU_TeX::Source::LaTeX_to_pdf.new(@md,@particulars.env).latexrun_selective
+        SiSU_TeX::Source::LaTeXtoPdf.new(@md,@particulars.env).latexrun_selective
         Dir.chdir(pwd)
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         unless @opt.cmd =~/[MV]/ #check maintenance flag
           texfiles=Dir["#{@env.processing_path.tex}/#{@opt.fns}*"]
@@ -137,14 +137,14 @@ module SiSU_TeX
         @@tex_debug_counter=@@table_pagebreak_counter=@@tex_footnote_call_counter=@@tex_table_flag=@@tex_counter=@@tex_column=@@tex_columns=@@tex_columns=@@counting=0
         @@tex_col_w=[]
         @@n=@@tableheader=@@rights=nil
-        @@date=SiSU_Env::Info_date.new
+        @@date=SiSU_Env::InfoDate.new
         @@flag={}
         $flag=1 #remove at some stage
         SiSU_Env::Clear.new(@opt.cmd,@opt.fns).param_instantiate
       end
     end
     private
-    class LaTeX_to_pdf
+    class LaTeXtoPdf
       @@n_lpdf||=0 #change
       def initialize(md,env)
         @md,@env=md,env
@@ -155,7 +155,7 @@ module SiSU_TeX
         @@n_lpdf=@@n_lpdf+1
         SiSU_Screen::Ansi.new(@md.opt.cmd,"#{papersize} portrait ->").dark_grey_title_hi if @md.opt.cmd =~/[MVv]/
         tex_fn_base=@texfilename.gsub(/\.tex$/,'')
-        cmd=SiSU_Env::System_call.new("#{tex_fn_base}.tex",'',@md.opt.cmd)
+        cmd=SiSU_Env::SystemCall.new("#{tex_fn_base}.tex",'',@md.opt.cmd)
         tell=SiSU_Screen::Ansi.new(@md.opt.cmd)
         tell.grey_open if @md.opt.cmd =~/[MVv]/
         if "#{tex_fn_base}" =~/\w+/ \
@@ -164,7 +164,7 @@ module SiSU_TeX
         end
         tell.p_off if @md.opt.cmd =~/[MVv]/
         SiSU_Screen::Ansi.new(@md.opt.cmd,"#{papersize} landscape ->").dark_grey_title_hi if @md.opt.cmd =~/[MVv]/
-        cmd=SiSU_Env::System_call.new("#{tex_fn_base}.landscape.tex",'',@md.opt.cmd)
+        cmd=SiSU_Env::SystemCall.new("#{tex_fn_base}.landscape.tex",'',@md.opt.cmd)
         tell.grey_open if @md.opt.cmd =~/[MVv]/
         if "#{tex_fn_base}" =~/\w+/ \
         and "#{papersize}" =~/\w+/
@@ -261,11 +261,11 @@ module SiSU_TeX
           end
           lst=Dir["*.{aux,log,out}"]
           lst.each {|file| File.unlink(file)} if lst
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         end
       end
     end
-    class LaTeX_create
+    class LaTeXcreate
       @@tex_head={
         'a4'=>    { p: nil, l: nil },
         'a5'=>    { p: nil, l: nil },
@@ -278,15 +278,15 @@ module SiSU_TeX
       def initialize(particulars)
         @particulars=particulars
         @md=@particulars.md
-        @env=SiSU_Env::Info_env.new(@md.fns) #@env=@particulars.env
+        @env=SiSU_Env::InfoEnv.new(@md.fns) #@env=@particulars.env
         @data=@particulars.dal_array # dal file drawn here
         @st={ tex: {} }
-        @tex_ml=SiSU_TeX_Pdf::Use_TeX.new(@md)
-        @vz=SiSU_Env::Get_init.instance.skin
-        @dp=@@dp ||=SiSU_Env::Info_env.new.digest.pattern
+        @tex_ml=SiSU_TeX_Pdf::UseTeX.new(@md)
+        @vz=SiSU_Env::GetInit.instance.skin
+        @dp=@@dp ||=SiSU_Env::InfoEnv.new.digest.pattern
         @brace_url=SiSU_Viz::Skin.new.url_decoration
-        vz=SiSU_Env::Get_init.instance.skin
-        l=SiSU_Env::Standardise_language.new(@md.opt.lng).language
+        vz=SiSU_Env::GetInit.instance.skin
+        l=SiSU_Env::StandardiseLanguage.new(@md.opt.lng).language
         @language=l[:n]
         @translate=SiSU_Translate::Source.new(@md,@language)
         @skin_no_ocn=if defined? vz.ocn_display_off \
@@ -305,7 +305,7 @@ module SiSU_TeX
           if defined? @md.rights.all \
           and not @md.rights.all.empty?
             rght=@md.rights #.author.dup #dup is necessary, else contents of :rights changed
-            sp_char=SiSU_TeX_Pdf::Special_characters.new(@md,rght.copyright.all)
+            sp_char=SiSU_TeX_Pdf::SpecialCharacters.new(@md,rght.copyright.all)
             copymark=@md.author_copymark \
             ? '{\begin{small}\copyright\end{small}} '
             : ''
@@ -315,7 +315,7 @@ module SiSU_TeX
           end
           if defined? @md.notes.prefix_b \
           and not @md.notes.prefix_b.empty?
-            sp_char=SiSU_TeX_Pdf::Special_characters.new(@md,@md.notes.prefix_b)
+            sp_char=SiSU_TeX_Pdf::SpecialCharacters.new(@md,@md.notes.prefix_b)
             prefix_b=sp_char.special_characters_safe
             @@prefix_b="\n #{Tex[:backslash]*2}[3]\\ \\linebreak \\ #{prefix_b}\n" unless @@prefix_b
           end
@@ -333,7 +333,7 @@ module SiSU_TeX
           data=number_paras(data)
           data=markup(data)
           output(data)
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
         end
       end
@@ -348,15 +348,15 @@ module SiSU_TeX
           if dob.is=='para' \
           or dob.is=='heading'
             dob.tmp.gsub!(/#{Mx[:mk_o]}:name#\S+?#{Mx[:mk_c]}/,'')
-            dob.tmp=SiSU_TeX_Pdf::Special_characters.new(@md,dob.tmp).special_characters
+            dob.tmp=SiSU_TeX_Pdf::SpecialCharacters.new(@md,dob.tmp).special_characters
             if dob.tmp =~/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:rel_o]}\S+?#{Mx[:rel_c]}/
-              dob.tmp=SiSU_TeX_Pdf::Format_text_object.new(@md,dob.tmp).url_str_internal(dob.tmp)
+              dob.tmp=SiSU_TeX_Pdf::FormatTextObject.new(@md,dob.tmp).url_str_internal(dob.tmp)
             end
           elsif dob.is =='code'
             dob.tmp=if @codeblock_box=='listings'
               dob.tmp
             else
-              SiSU_TeX_Pdf::Special_characters.new(@md,dob.tmp).special_characters_code
+              SiSU_TeX_Pdf::SpecialCharacters.new(@md,dob.tmp).special_characters_code
             end
           elsif dob.is =='break'
             if dob.obj==Mx[:br_page]; dob.tmp='\newpage'
@@ -387,9 +387,9 @@ module SiSU_TeX
         @md.papersize_array.each do |ps|
           @@tableheader={ ps => { p: 0, l: 0 } }
           dob.tmp={ tmp: dob.tmp, paper_size: ps }
-          format_l=SiSU_TeX_Pdf::Format_text_object.new(md,dob)
+          format_l=SiSU_TeX_Pdf::FormatTextObject.new(md,dob)
           dob.tmp={ tmp: dob.tmp, paper_size: ps }
-          format_p=SiSU_TeX_Pdf::Format_text_object.new(md,dob)
+          format_p=SiSU_TeX_Pdf::FormatTextObject.new(md,dob)
           @block[ps]={
             l: format_l.longtable_landscape,
             p: format_p.longtable_portrait
@@ -414,7 +414,7 @@ module SiSU_TeX
         dob
       end
       def box_boites(dob,ocn)
-        sp_char=SiSU_TeX_Pdf::Special_characters.new(@md,dob.tmp,dob.is)
+        sp_char=SiSU_TeX_Pdf::SpecialCharacters.new(@md,dob.tmp,dob.is)
         dob.tmp=sp_char.special_characters_safe
         dob.tmp.gsub!(/(#{Mx[:nbsp]})/m,'{\color{mywhite}\1}')
         #dob.tmp.gsub!(/#{Mx[:nbsp]}/m,'{~}') # dob.tmp.gsub!(/#{Mx[:nbsp]}\s*/m,'{~}')
@@ -424,7 +424,7 @@ module SiSU_TeX
         dob.tmp.gsub!(/#{Mx[:br_nl]}{2}/,'\newline \\\\\\ ')
         dob.tmp.gsub!(/#{Mx[:br_nl]}/,' \\\\\\ ')
         dob.tmp.gsub!(/\n\n\n/m," \\newline\n\n")
-        ocn=SiSU_TeX_Pdf::Format_text_object.new(@md).ocn_display(dob)
+        ocn=SiSU_TeX_Pdf::FormatTextObject.new(@md).ocn_display(dob)
         dob.tmp = ocn \
         + @tex_ml.paraskip_small \
         + '\begin{Codeblock}' \
@@ -437,14 +437,14 @@ module SiSU_TeX
         dob
       end
       def box_listings(dob,ocn)
-        sp_char=SiSU_TeX_Pdf::Special_characters.new(@md,dob.tmp,dob.is)
+        sp_char=SiSU_TeX_Pdf::SpecialCharacters.new(@md,dob.tmp,dob.is)
         dob.tmp=sp_char.characters_code_listings
         dob.tmp.gsub!(/^\s+/m,'') #bug, fix earlier, should be made unecessary
         dob.tmp.gsub!(/#{Mx[:nbsp]}/m,' ')
         dob.tmp.gsub!(/#{Mx[:vline]}/m,'|')
         dob.tmp.gsub!(/#{Mx[:br_nl]}(?:\s?\n)?/m,"\n")
         dob.tmp.gsub!(/\n\n\n/m," \n\n")
-        ocn=SiSU_TeX_Pdf::Format_text_object.new(@md).ocn_display(dob)
+        ocn=SiSU_TeX_Pdf::FormatTextObject.new(@md).ocn_display(dob)
         dob.tmp = ocn \
         + @tex_ml.paraskip_small \
         + '\begin{Codeblock}' \
@@ -469,7 +469,7 @@ module SiSU_TeX
             dob.tmp.gsub!(/#{Mx[:nbsp]}/m,'{~}')
             dob.tmp.gsub!(/#{Mx[:gl_bullet]}/m,'$\txtbullet$\hspace{\enspace}') #Bullet environment not used for grouped text, ∴ no hanging indent here
             dob.tmp.gsub!(/#{Mx[:br_nl]}+/m,"\n\n") #match not ideal, but currently not inserting extra newlines anyway
-            ocn=SiSU_TeX_Pdf::Format_text_object.new(@md).ocn_display(dob)
+            ocn=SiSU_TeX_Pdf::FormatTextObject.new(@md).ocn_display(dob)
             dob.tmp=if dob.is=='group' \
             or dob.is=='block' \
             or dob.is=='alt'
@@ -509,7 +509,7 @@ module SiSU_TeX
           dob=enclose(dob) unless dob.tmp =~/^$/
           dob
         else
-          tst=SiSU_TeX_Pdf::Format_text_object.new(@md,dob)
+          tst=SiSU_TeX_Pdf::FormatTextObject.new(@md,dob)
           case dob.is
           when 'heading'
             case dob.ln
@@ -529,11 +529,11 @@ module SiSU_TeX
               h=tst.heading_major
               heading="\\clearpage\n" + h.tmp
               idx_arr=[]
-              idx=SiSU_Particulars::Combined_singleton.instance.get_idx_tex(@md.opt).tex_idx
+              idx=SiSU_Particulars::CombinedSingleton.instance.get_idx_tex(@md.opt).tex_idx
               idx.each do |x|
                 x=if x.class==String
-                  x=SiSU_TeX_Pdf::Special_characters.new(@md,x).special_characters
-                  x=SiSU_TeX_Pdf::Format_text_object.new(@md,x).url_str_internal(x,true)
+                  x=SiSU_TeX_Pdf::SpecialCharacters.new(@md,x).special_characters
+                  x=SiSU_TeX_Pdf::FormatTextObject.new(@md,x).url_str_internal(x,true)
                 else x=nil
                 end
                 idx_arr << x.sub(/,$/,'') if x.class==String
@@ -551,7 +551,7 @@ module SiSU_TeX
             elsif dob.ln==4 \
             and dob.obj=~/Metadata\b/
               h=tst.level4
-              metadata=Metadata::TeX_metadata.new(@md).metadata_tex
+              metadata=Metadata::TeX_Metadata.new(@md).metadata_tex
               dob.tmp=h.tmp + ' ' + '\begin{scriptsize}' + metadata.join(br) + '\end{scriptsize}'
             else dob.tmp='' # dob.tmp={ l: '', p: '' }
             end
@@ -583,20 +583,20 @@ module SiSU_TeX
         end
         if dob.tmp =~/(?:#{Mx[:url_o]}\S+?#{Mx[:url_c]}|image\b)/m \
         && dob.is !='code'
-          dob=SiSU_TeX_Pdf::Bare_urls.new(@md,dob).bare_urls
-          tst=SiSU_TeX_Pdf::Format_text_object.new(@md,dob)
+          dob=SiSU_TeX_Pdf::BareUrls.new(@md,dob).bare_urls
+          tst=SiSU_TeX_Pdf::FormatTextObject.new(@md,dob)
           dob=tst.urls_txt_and_images
           dob
         elsif dob.tmp =~/https?:\/\/\S+\b/m \
         && dob.is =='code' \
         && @codeblock_box !='listings'
-          dob=SiSU_TeX_Pdf::Bare_urls.new(@md,dob).bare_urls_in_code
+          dob=SiSU_TeX_Pdf::BareUrls.new(@md,dob).bare_urls_in_code
           dob
         end
         if dob.class !=Hash \
         && dob.tmp =~/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}image\b/ \
         && dob.is !='code'
-          tst=SiSU_TeX_Pdf::Format_text_object.new(@md,dob)
+          tst=SiSU_TeX_Pdf::FormatTextObject.new(@md,dob)
         end
         dob
       end
@@ -666,9 +666,9 @@ WOK
         title=@md.title.full.gsub(/#{Mx[:br_line]}|#{Mx[:br_nl]}|#{Mx[:br_paragraph]}|\\\\/,' - ') #no line splitting in heading neither html nor latex
         @md.papersize_array.each do |ps|
           txt_obj={ txt: "#{home}: - #{title}", paper_size: ps, orientation: 'portrait' }
-          orient_portrait=SiSU_TeX_Pdf::Format_head.new(@md,txt_obj)
+          orient_portrait=SiSU_TeX_Pdf::FormatHead.new(@md,txt_obj)
           txt_obj={ txt: "#{home}: - #{title}", paper_size: ps, orientation: 'landscape' }
-          orient_landscape=SiSU_TeX_Pdf::Format_head.new(@md,txt_obj)
+          orient_landscape=SiSU_TeX_Pdf::FormatHead.new(@md,txt_obj)
           @@tex_head[ps][:p]=orient_portrait.document_head_with_orientation(@codeblock_box)
           @@tex_head[ps][:l]=orient_landscape.document_head_with_orientation(@codeblock_box)
         end
@@ -709,13 +709,13 @@ WOK
         @copymark='' #check and remove as now is superflous
         x={}
         txt_obj={ title: @md.title.full }
-        x[:l]=SiSU_TeX_Pdf::Format_text_object.new(@md,txt_obj).title_landscape
-        x[:p]=SiSU_TeX_Pdf::Format_text_object.new(@md,txt_obj).title_portrait
+        x[:l]=SiSU_TeX_Pdf::FormatTextObject.new(@md,txt_obj).title_landscape
+        x[:p]=SiSU_TeX_Pdf::FormatTextObject.new(@md,txt_obj).title_portrait
         @tex_file << x
         x=nil
         if defined? @md.creator.author \
         and @md.creator.author
-          sp_char=SiSU_TeX_Pdf::Special_characters.new(@md,@md.creator.author)
+          sp_char=SiSU_TeX_Pdf::SpecialCharacters.new(@md,@md.creator.author)
           author=sp_char.special_characters
           @tex_file << if @md.author_home
             <<WOK
diff --git a/lib/sisu/v3dv/texpdf_format.rb b/lib/sisu/v3dv/texpdf_format.rb
index 43008c3d..d059934d 100644
--- a/lib/sisu/v3dv/texpdf_format.rb
+++ b/lib/sisu/v3dv/texpdf_format.rb
@@ -59,7 +59,7 @@
 module SiSU_TeX_Pdf
   @@table_pg_break_counter=1
   include SiSU_Viz
-  class Bare_urls
+  class BareUrls
     def initialize(md,dob=nil)
       @md,@dob=md,dob
       @brace_url=SiSU_Viz::Skin.new.url_decoration
@@ -79,10 +79,10 @@ module SiSU_TeX_Pdf
       @dob
     end
   end
-  class Format_text_object
+  class FormatTextObject
     require_relative 'defaults'                         # defaults.rb
     attr_accessor :string,:string1,:orientation,:url,:dir,:tex
-    @@sys=SiSU_Env::System_call.new
+    @@sys=SiSU_Env::SystemCall.new
     @@tex_pattern_margin_number=/\\begin\{tiny\}\\hspace\{0mm\}\\end\{tiny\}\{\\marginpar.+?\}\}\}/
     @@tableheader={
       'a4' => { p: 0, l: 0 },
@@ -91,7 +91,7 @@ module SiSU_TeX_Pdf
       'letter' => { p: 0, l: 0 },
       'legal' => { p: 0, l: 0 }
     }
-    @@sys=SiSU_Env::System_call.new
+    @@sys=SiSU_Env::SystemCall.new
     def initialize(md,dob=nil)
       @md,@dob=md,dob
       if defined? @md.image \
@@ -100,10 +100,10 @@ module SiSU_TeX_Pdf
       else @center_begin,@center_end='',''
       end
       @start_table=''
-      @tx=SiSU_Env::Get_init.instance.tex
+      @tx=SiSU_Env::GetInit.instance.tex
       @brace_rel=SiSU_Viz::Skin.new.rel_decoration
-      @env ||=SiSU_Env::Info_env.new(@md.fns)
-      @tex2pdf=@@tex3pdf ||=SiSU_Env::System_call.new.tex2pdf_engine
+      @env ||=SiSU_Env::InfoEnv.new(@md.fns)
+      @tex2pdf=@@tex3pdf ||=SiSU_Env::SystemCall.new.tex2pdf_engine
     end
     def ocn_display(dob)
       "\\begin{tiny}\\hspace{0mm}\\end{tiny}{\\marginpar{\\begin{tiny}\\hspace{0mm}\\hypertarget{#{dob.ocn}}{#{dob.ocn}}\\end{tiny}}}" #ocn object citation numbering
@@ -462,7 +462,7 @@ module SiSU_TeX_Pdf
       blt
     end
     def symbol_graphic
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       image='c_' + /<:=\s*(\S+?)\s*>/m.match(@txt).captures.join + '.png' #watch
       if FileTest.file?("#{dir.path.image_source_include}/#{image}")
         @txt.gsub!(/<:=\s*(\S+?)\s*>/,
@@ -473,7 +473,7 @@ module SiSU_TeX_Pdf
       end
     end
     def image
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       image,m=/#{Mx[:lnk_o]}\s*(\S+)\s+.+?width=``(\d+)''.+?#{Mx[:lnk_c]}/m.match(@txt).captures
       width=m[1] || '100'
       width=width.to_i*0.4
@@ -496,7 +496,7 @@ module SiSU_TeX_Pdf
       end
     end
     def png(ps='') #fc missing image check
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       # messy clean up
       z=@txt[/#{Mx[:lnk_o]}(\S.+?)#{Mx[:lnk_c]}(?:image|png)/,1].strip if @txt =~ /#{Mx[:lnk_o]}\S.+?#{Mx[:lnk_c]}(?:image|png)/ # match operator for z \\ fragile !
       if z #debug 2004w14
@@ -534,7 +534,7 @@ module SiSU_TeX_Pdf
       end
     end
     def url_str_internal(str,idx=nil)
-      map_nametags=SiSU_Particulars::Combined_singleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
+      map_nametags=SiSU_Particulars::CombinedSingleton.instance.get_map_nametags(@md).nametags_map #p map_nametags
       rgx_url_generic=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:rel_o]}\S+?#{Mx[:rel_c]}/m
       rgx_url_relative=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:rel_o]}:\S+?#{Mx[:rel_c]}/m
       rgx_url_internal=/#{Mx[:lnk_o]}.+?#{Mx[:lnk_c]}#{Mx[:rel_o]}#?\S+?#{Mx[:rel_c]}/m
@@ -616,7 +616,7 @@ module SiSU_TeX_Pdf
     end
     def urls_txt_and_images
       dob=@dob
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       @dm={
         'a4'=>     @tx.a4.landscape.img_px,
         'letter'=> @tx.letter.landscape.img_px,
@@ -737,7 +737,7 @@ module SiSU_TeX_Pdf
       dob
     end
     def title
-      title=SiSU_TeX_Pdf::Special_characters.new(@md,@md.title.full).special_characters_safe
+      title=SiSU_TeX_Pdf::SpecialCharacters.new(@md,@md.title.full).special_characters_safe
       "\n\\title{#{title}}"
     end
     def title_landscape
@@ -747,11 +747,11 @@ module SiSU_TeX_Pdf
       title
     end
   end
-  class Format_head
+  class FormatHead
     require_relative 'prog_text_translation'        # prog_text_translation.rb
     def initialize(md,t_o)
       @md,@t_o=md,t_o
-      @env=SiSU_Env::Info_env.new(@md.fns)
+      @env=SiSU_Env::InfoEnv.new(@md.fns)
       if t_o.class==Hash
         @txt =t_o[:txt]            || nil
         @subtitle=t_o[:subtitle]   || nil
@@ -762,24 +762,24 @@ module SiSU_TeX_Pdf
         p t_o.class
         p caller
       end
-      @tx=SiSU_Env::Get_init.instance.tex
+      @tx=SiSU_Env::GetInit.instance.tex
       @brace_url=SiSU_Viz::Skin.new.url_decoration
-      @tex2pdf=@@tex3pdf ||=SiSU_Env::System_call.new.tex2pdf_engine
+      @tex2pdf=@@tex3pdf ||=SiSU_Env::SystemCall.new.tex2pdf_engine
       @ps=@txt if @txt=~/(?:a4|letter|legal|book|a5|b5)/i
       @lang ||=SiSU_i18n::Languages.new #.list[@md.opt.lng][:xlp]
       @author=if defined? @md.creator.author \
       and @md.creator.author=~/\S+/
-        SiSU_TeX_Pdf::Special_characters.new(@md,@md.creator.author).special_characters_safe
+        SiSU_TeX_Pdf::SpecialCharacters.new(@md,@md.creator.author).special_characters_safe
       else ''
       end
       @subject=if defined? @md.classify.subject \
       and @md.classify.subject=~/\S+/
-        SiSU_TeX_Pdf::Special_characters.new(@md,@md.classify.subject).special_characters_safe
+        SiSU_TeX_Pdf::SpecialCharacters.new(@md,@md.classify.subject).special_characters_safe
       else ''
       end
       @keywords=if defined? @md.classify.keywords \
       and @md.classify.keywords=~/\S+/
-        SiSU_TeX_Pdf::Special_characters.new(@md,@md.classify.keywords).special_characters_safe
+        SiSU_TeX_Pdf::SpecialCharacters.new(@md,@md.classify.keywords).special_characters_safe
       else ''
       end
     end
@@ -1171,11 +1171,11 @@ WOK
     def a4generic
     end
   end
-  class Special_characters
+  class SpecialCharacters
     def initialize(md,str,is='')
       @md,@txt,@is=md,str,is
       @brace_url=SiSU_Viz::Skin.new.url_decoration
-      @tex2pdf=@@tex3pdf ||=SiSU_Env::System_call.new.tex2pdf_engine
+      @tex2pdf=@@tex3pdf ||=SiSU_Env::SystemCall.new.tex2pdf_engine
     end
     def xetex_code_listings(str,is='')                                  # ~ ^ $ & % _ { }  #LaTeX special characters - KEEP list
       word=str.scan(/\S+|\n/) #unless line =~/^(?:@\S|%+\s)/
@@ -1411,12 +1411,12 @@ WOK
       str
     end
   end
-  class Use_TeX
+  class UseTeX
     attr_accessor :url,:txt,:date
     def initialize(md)
       @md=md
-      @vz=SiSU_Env::Get_init.instance.skin
-      @date=SiSU_Env::Info_date.new # #{@date.year}
+      @vz=SiSU_Env::GetInit.instance.skin
+      @date=SiSU_Env::InfoDate.new # #{@date.year}
       @copymark='{\\begin{footnotesize}\\raisebox{1ex}{\\copyright}\\end{footnotesize}}'
       @brace_url=SiSU_Viz::Skin.new.url_decoration
     end
@@ -1490,7 +1490,7 @@ WOK
       end
     end
     def sisu_rights
-      v=SiSU_Env::Info_version.instance.get_version
+      v=SiSU_Env::InfoVersion.instance.get_version
       base_prog_txt=if @md.base_program
         case @md.base_program
         when /kdissert/i; "\n\\\\ This document prepared using \\href{http://freehackers.org/~tnagy/kdissert/}{Kdissert \\ http://freehackers.org/~tnagy/kdissert/ } \\\\ Kdissert is Document Mapping software by Thomas Nagy"
@@ -1518,7 +1518,7 @@ WOK
       " \\footnote{%\nGenerated by \\href{http://www.jus.uio.no/sisu}{SiSU} \\ \\href{http://www.jus.uio.no/sisu}{www.jus.uio.no/sisu} \\newline \\href{http://www.sisudoc.org}{www.sisudoc.org} \\\n}"
     end
     def doc_sc_info
-      v=SiSU_Env::Info_version.instance.get_version
+      v=SiSU_Env::InfoVersion.instance.get_version
 <<WOK
 \\\\
 {\\begin{footnotesize}
@@ -1530,7 +1530,7 @@ Generated by \\href{http://www.jus.uio.no/sisu}{SiSU www.jus.uio.no/sisu }\\- ve
 WOK
     end
     def doc_no_sc_info
-      v=SiSU_Env::Info_version.instance.get_version
+      v=SiSU_Env::InfoVersion.instance.get_version
 <<WOK
 \\\\
 {\\begin{small}
@@ -1561,9 +1561,9 @@ WOK
 WOK
     end
     def doc_tail
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
       base_html="#{dir.url.root}/#{@md.fnb}"
-      v=SiSU_Env::Info_version.instance.get_version
+      v=SiSU_Env::InfoVersion.instance.get_version
       sisu_ico=if FileTest.file?("#{dir.path.image_source_include}/sisu.png")
         "\\includegraphics*[width=60pt]{#{dir.path.image_source_include}/sisu.png}"
       else
@@ -1601,7 +1601,7 @@ WOK
 WOK
     end
     def mail_tail #not retested, the old mail_tail is commented out and appended to this program
-      dir=SiSU_Env::Info_env.new(@md.fns)
+      dir=SiSU_Env::InfoEnv.new(@md.fns)
 <<WOK
 \\subsection*{Mail sender details}
 \\addcontentsline{toc}{subsection}{Mail sender details}
diff --git a/lib/sisu/v3dv/update.rb b/lib/sisu/v3dv/update.rb
index 0f0701c6..12597c99 100644
--- a/lib/sisu/v3dv/update.rb
+++ b/lib/sisu/v3dv/update.rb
@@ -67,20 +67,20 @@ module SiSU_UpdateControlFlag
     end
     def read
       begin
-        @env=SiSU_Env::Info_env.new(@md.fns)
+        @env=SiSU_Env::InfoEnv.new(@md.fns)
         out=@env.path.output
         base_path="#{out}/#{@md.fnb}"
         SiSU_Screen::Ansi.new(@md.opt.cmd,'Checking previous output',base_path).green_hi_blue unless @md.opt.cmd =~/q/
-        Set_CF.new(@md).set_flags
-      rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        SetCF.new(@md).set_flags
+      rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
       ensure
       end
     end
     private
-    class Set_CF
+    class SetCF
       def initialize(md)
         @md=md
-        @env=SiSU_Env::Info_env.new(@md.fns)
+        @env=SiSU_Env::InfoEnv.new(@md.fns)
         out=@env.path.output
         @base_path="#{out}/#{@md.fnb}"
       end
diff --git a/lib/sisu/v3dv/urls.rb b/lib/sisu/v3dv/urls.rb
index fdebb56c..6d334295 100644
--- a/lib/sisu/v3dv/urls.rb
+++ b/lib/sisu/v3dv/urls.rb
@@ -68,24 +68,24 @@ module SiSU_Urls
     end
     def read
       begin
-        SiSU_Urls::Output_urls.new(@opt).songsheet if @opt.fnb
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd).error
+        SiSU_Urls::OutputUrls.new(@opt).songsheet if @opt.fnb
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd).error
       ensure
       end
     end
   end
-  class Output_urls
+  class OutputUrls
     attr_reader :fns,:fnb,:cmd,:dir,:m_regular,:u
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_env_md(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_env_md(opt)
       @cmd=@opt.cmd
       @md=@particulars.md
       @env=@particulars.env
       @fnb=@env.fnb
-      fn_set_lang=SiSU_Env::Standardise_language.new(@opt.lng).language
+      fn_set_lang=SiSU_Env::StandardiseLanguage.new(@opt.lng).language
       @fnl=@env.i18n.lang_filename(fn_set_lang[:c])
-      @fn=SiSU_Env::Env_call.new(@opt.fns).lang(fn_set_lang[:c])
+      @fn=SiSU_Env::EnvCall.new(@opt.fns).lang(fn_set_lang[:c])
       @m_regular=/(.+?)\.(?:(?:-|ssm\.)?sst|ssm)$/
       @prog=@env.program
       source=if @opt.fns =~/\.sst$/; @opt.fns
@@ -124,7 +124,7 @@ module SiSU_Urls
     def songsheet
       begin
        @opt.cmd=~/U/ ? urls_all : (urls_select unless @opt.cmd=~/q/)
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
diff --git a/lib/sisu/v3dv/webrick.rb b/lib/sisu/v3dv/webrick.rb
index 88fb67ef..42281321 100644
--- a/lib/sisu/v3dv/webrick.rb
+++ b/lib/sisu/v3dv/webrick.rb
@@ -61,7 +61,7 @@ def brick(port,get='')
   cgidir=if get=~/pwd/; Dir.pwd
   else                  '/usr/lib/cgi-bin'  # @env.path.cgi
   end
-  port=SiSU_Env::Info_port.new.webrick
+  port=SiSU_Env::InfoPort.new.webrick
   begin
     s=HTTPServer.new(
       Port:         port,
@@ -75,7 +75,7 @@ def brick(port,get='')
     s.mount('/cgi-bin', HTTPServlet::FileHandler, cgi_dir, { FancyIndexing: true })
     trap("INT"){ s.shutdown }
     s.start
-  rescue; SiSU_Errors::Info_error.new($!,$@,'-W',nil).error #fix
+  rescue; SiSU_Errors::InfoError.new($!,$@,'-W',nil).error #fix
   ensure
   end
 end
@@ -86,8 +86,8 @@ begin                                                                          #
   require_relative 'sysenv'                             # sysenv.rb
     include SiSU_Env; include SiSU_Screen
   @cX=SiSU_Screen::Ansi.new('yes').cX
-  @env=SiSU_Env::Info_env.new
-  port=SiSU_Env::Info_port.new
+  @env=SiSU_Env::InfoEnv.new
+  port=SiSU_Env::InfoPort.new
   @argv=$*
   @host=@env.url.webrick
   host='localhost'
@@ -168,7 +168,7 @@ WOK
   brick(@port,get)
 rescue;
   require_relative 'sysenv'                             # sysenv.rb
-  SiSU_Errors::Info_error.new($!,$@,'-W',nil).error #fix
+  SiSU_Errors::InfoError.new($!,$@,'-W',nil).error #fix
 ensure
 end
 __END__
diff --git a/lib/sisu/v3dv/wikispeak.rb b/lib/sisu/v3dv/wikispeak.rb
index 2b82039e..955432c0 100644
--- a/lib/sisu/v3dv/wikispeak.rb
+++ b/lib/sisu/v3dv/wikispeak.rb
@@ -76,7 +76,7 @@ module SiSU_Wikispeak
     def read
       begin
         @md=SiSU_Param::Parameters.new(@opt).get
-        @env=SiSU_Env::Info_env.new(@opt.fns)
+        @env=SiSU_Env::InfoEnv.new(@opt.fns)
         path=@env.path.output_tell
         tool=(@opt.cmd =~/[MVv]/) \
         ? "#{@env.program.text_editor} #{path}/#{@md.fnb}/#{@md.fn[:wiki]}"
@@ -85,13 +85,13 @@ module SiSU_Wikispeak
         SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"#{@env.path.output_tell}/#{@md.fnb}/#{@md.fn[:wiki]}").flow if @opt.cmd =~/[MV]/
         @dal_array=SiSU_DAL::Source.new(@opt).get # dal file drawn here
         SiSU_Wikispeak::Source::Scroll.new(@dal_array,@md).songsheet
-        SiSU_Env::Info_skin.new(@md).select #watch
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+        SiSU_Env::InfoSkin.new(@md).select #watch
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
     private
-    class Split_text_object <Source
+    class SplitTextObject <Source
       require_relative 'plaintext_format'               # plaintext_format.rb
         include Format
       include SiSU_Viz
@@ -101,7 +101,7 @@ module SiSU_Wikispeak
       def initialize(para)
         @para=para
         @format,@ocn='ordinary','ordinary'
-        @dp=@@dp ||=SiSU_Env::Info_env.new.digest.pattern
+        @dp=@@dp ||=SiSU_Env::InfoEnv.new.digest.pattern
       end
       def lev_segname_para_ocn
         @text=nil
@@ -132,9 +132,9 @@ module SiSU_Wikispeak
         end
         format=@format.dup
         @lev_para_ocn=if @para =~/.+#{Mx[:id_o]}~\d+;(?:\w|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{#Mx[:id_c]}$/
-          Format::Format_text_object.new(format,@text,@ocn)
+          Format::FormatTextObject.new(format,@text,@ocn)
         else
-          Format::Format_text_object.new(format,@text,"#{Mx[:id_o]}~(\d+);[um]\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}")
+          Format::FormatTextObject.new(format,@text,"#{Mx[:id_o]}~(\d+);[um]\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}")
         end
         self
       end
@@ -147,8 +147,8 @@ module SiSU_Wikispeak
       @@dp=nil
       def initialize(data,md)
         @data,@md=data,md
-        @vz=SiSU_Env::Get_init.instance.skin
-        @dp=@@dp ||=SiSU_Env::Info_env.new.digest.pattern
+        @vz=SiSU_Env::GetInit.instance.skin
+        @dp=@@dp ||=SiSU_Env::InfoEnv.new.digest.pattern
         @regx=/^(?:(?:#{Mx[:br_line]}\s*|#{Mx[:br_nl]}\s*)?#{Mx[:lv_o]}\d:(\S*?)#{Mx[:lv_c]}\s*)?(.+)/ #fix Mx[:lv_o] #m # 2004w18 pb pn removal added
         @tab="\t"
         @@dostype='unix footnotes'
@@ -175,8 +175,8 @@ WOK
         end
       end
       def wiki_tail
-        SiSU_Env::Info_skin.new(@md).select
-        vz=SiSU_Env::Get_init.instance.skin
+        SiSU_Env::InfoSkin.new(@md).select
+        vz=SiSU_Env::GetInit.instance.skin
         generator="Generated by: #{@md.sisu_version[:project]} #{@md.sisu_version[:version]} of #{@md.sisu_version[:date_stamp]} (#{@md.sisu_version[:date]})"  if @md.sisu_version[:version]
         lastdone="Last Generated on: #{Time.now}"
         rubyv="Ruby version: #{@md.ruby_version}"
@@ -227,7 +227,7 @@ WOK
       end
       def markup                                                               # Used for major markup instructions
         data=@data
-        dir=SiSU_Env::Info_env.new(@md.fns)
+        dir=SiSU_Env::InfoEnv.new(@md.fns)
         @data_mod,@endnotes,@level,@cont,@copen,@wiki_contents_close=Array.new(6){[]}
         (0..6).each { |x| @cont[x]=@level[x]=false }
         (4..6).each { |x| @wiki_contents_close[x]='' }
@@ -257,16 +257,16 @@ WOK
           para.gsub!(/(?:^|[^_\\])#{Mx[:lnk_o]}\s*\S+?\.(?:png|jpg|gif)\s+.+?"(.*?)"\s*#{Mx[:lnk_c]}\S+/,'[image: "\1"]')
           wordlist=para.scan(/\S+/)
           if para =~/^@(\S+?):\s+(.+?)\Z/m # for headers
-            d_meta=SiSU_TextUtils::Header_scan.new(@md,para).meta
+            d_meta=SiSU_TextUtils::HeaderScan.new(@md,para).meta
             if d_meta; wiki_metadata(d_meta)
             end
           end
           if para !~/(^@\S+?:|#{Mx[:br_endnotes]}|#{Mx[:br_eof]})/
             if para =~@regx #/.+?<~\d+;\w\d+;\w\d+>.*/ #watch change
               paranum=para[@regx,3]
-              @p_num=Format::Paragraph_number.new(paranum)
+              @p_num=Format::ParagraphNumber.new(paranum)
             end
-            @sto=Split_text_object.new(para).lev_segname_para_ocn
+            @sto=SplitTextObject.new(para).lev_segname_para_ocn
             ### problem in scroll, it appears tables are getting paragraph numbers
             m=/#{Mx[:id_o]}~(\d+);(?:\w|[0-6]:)\d+;\w\d+#{Mx[:id_c]}#{Mx[:id_o]}#{@dp}:#{@dp}#{Mx[:id_c]}$/
             if para =~m \
@@ -281,7 +281,7 @@ WOK
               when /^(3)~(?:(\S+))?/
                 wiki_structure(para,$1,@sto.ocn,$2)
                 @sto.lev_para_ocn.heading_body3
-              when /^(4)~(\S+)/ # work on see SiSU_text_parts::Split_text_object
+              when /^(4)~(\S+)/ # work on see SiSU_text_parts::SplitTextObject
                 wiki_structure(para,$1,@sto.ocn,$2)
                 @sto.lev_para_ocn.heading_body4
               when /^(5)~(?:(\S+))?/
@@ -305,7 +305,7 @@ WOK
             elsif para =~/(#{Mx[:tc_p]}|#{Mx[:gr_o]}Th?)/u #tables ! #fix
             elsif para =~/(.*)<!#!>(.*)/
               one,two=$1,$2
-              format_text=Format_text_object.new(one,two)
+              format_text=FormatTextObject.new(one,two)
               para=format_text.seg_no_paranum
             end
             if (para =~/<a name="n\d+">/ \
@@ -315,12 +315,12 @@ WOK
             case para
             when /<:i1>/
               if para =~/.*<:#>.*$/
-                format_text=Format_text_object.new(para,'')
+                format_text=FormatTextObject.new(para,'')
                 para=format_text.scr_indent_one_no_paranum
               end
             when /<:i2>/
               if para =~/.*<:#>.*$/
-                format_text=Format_text_object.new(para,'')
+                format_text=FormatTextObject.new(para,'')
                 para=format_text.scr_indent_one_no_paranum
               end
             end
@@ -329,7 +329,7 @@ WOK
             end
             if para =~/<:center>/
               one,two=/(.*)<:center>(.*)/.match(para)[1,2]
-              format_text=Format_text_object.new(one,two)
+              format_text=FormatTextObject.new(one,two)
               para=format_text.center
             end
             para.gsub!(/<!.+!>/,' ') if para ## Clean Prepared Text
diff --git a/lib/sisu/v3dv/xhtml.rb b/lib/sisu/v3dv/xhtml.rb
index bd4bdd6a..353309d4 100644
--- a/lib/sisu/v3dv/xhtml.rb
+++ b/lib/sisu/v3dv/xhtml.rb
@@ -75,7 +75,7 @@ module SiSU_XHTML
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       begin
@@ -94,7 +94,7 @@ module SiSU_XHTML
           SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"/#{@md.file.output_path.xhtml.dir}/#{@md.file.base_filename.xhtml}").flow if @opt.cmd =~/[MV]/
         end
         SiSU_XHTML::Source::Songsheet.new(@particulars).song
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -109,7 +109,7 @@ module SiSU_XHTML
           SiSU_XHTML::Source::Scroll.new(@particulars).songsheet
           SiSU_XHTML::Source::Tidy.new(@md,@file.place_file.xhtml.dir).xml if @md.opt.cmd =~/[vVM]/ # test wellformedness, comment out when not in use
           SiSU_Rexml::Rexml.new(@md,@file.place_file.xhtml.dir).xml if @md.opt.cmd =~/M/ # test rexml parsing, comment out when not in use #debug
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
         end
       end
@@ -122,10 +122,10 @@ module SiSU_XHTML
       @@xml={ body: [], sisu: [], open: [], close: [], head: [] }
       def initialize(particulars)
         @env,@md,@dal_array=particulars.env,particulars.md,particulars.dal_array
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @tab="\t"
         @trans=SiSU_XML_Munge::Trans.new(@md)
-        @sys=SiSU_Env::System_call.new
+        @sys=SiSU_Env::SystemCall.new
       end
       def songsheet
         pre
@@ -267,7 +267,7 @@ WOK
       end
       def table_structure(dob)
         named=name_tags(dob)
-        table=SiSU_XHTML_Shared::Table_xhtml.new(dob)
+        table=SiSU_XHTML_Shared::TableXHTML.new(dob)
         @@xml[:body] << %{#{Ax[:tab]*0}<object id="#{dob.ocn}">}
         @@xml[:body] << %{#{Ax[:tab]*1}<ocn>#{dob.ocn}</ocn>}
         @@xml[:body] << %{#{Ax[:tab]*2}#{named}#{table.table.obj}}
@@ -291,10 +291,10 @@ WOK
           if dob.obj !~/(^#{Rx[:meta]}|#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
             if defined? dob.ocn #look to move to format section
               ocn=(dob.ocn.to_s =~/\d+/) ? dob.ocn : nil
-              @p_num=SiSU_XML_Format::Paragraph_number.new(@md,ocn)
+              @p_num=SiSU_XML_Format::ParagraphNumber.new(@md,ocn)
             end
             if not @rcdc
-              x=SiSU_XML_Format::Format_seg.new(@md,dob)
+              x=SiSU_XML_Format::FormatSeg.new(@md,dob)
               if dob.is=='heading'
                 xml_structure(dob)
                 dob.obj=case dob.ln
@@ -334,7 +334,7 @@ WOK
               if dob.obj =~/.*<:#>.*$/ #investigate removal
                 dob.obj=if dob.obj =~ /#{Mx[:pa_o]}:i[1-9]#{Mx[:pa_c]}/
                   txt_obj={ txt: dob }
-                  format_text=Format_text_object.new(@md,txt_obj)
+                  format_text=FormatTextObject.new(@md,txt_obj)
                   format_text.scr_inden_ocn_e_no_paranum
                 end
               end
@@ -356,9 +356,9 @@ WOK
       end
       def pre
         rdf=SiSU_XML_Tags::RDF.new(@md)
-        dir=SiSU_Env::Info_env.new
+        dir=SiSU_Env::InfoEnv.new
         @@xml[:head],@@xml[:body]=[],[]
-        css=SiSU_Env::CSS_stylesheet.new(@md)
+        css=SiSU_Env::CSS_Stylesheet.new(@md)
         encoding=(@sys.locale =~/utf-?8/i) ? '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' : '<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>'
         @@xml[:open] =<<WOK
 #{encoding}
@@ -402,7 +402,7 @@ WOK
     class Tidy
       def initialize(md,file)
         @md,@file=md,file
-        @prog=SiSU_Env::Info_program.new
+        @prog=SiSU_Env::InfoProgram.new
       end
       def xml
         if @prog.tidy !=false
@@ -413,7 +413,7 @@ WOK
               tell.grey_open
             end
             tidyfile='/dev/null' #don't want one or screen output, check for alternative flags
-            tidy=SiSU_Env::System_call.new(@file,tidyfile)
+            tidy=SiSU_Env::SystemCall.new(@file,tidyfile)
             tidy.well_formed?
             tell.p_off unless @md.opt.cmd =~/q/
           end
diff --git a/lib/sisu/v3dv/xhtml_table.rb b/lib/sisu/v3dv/xhtml_table.rb
index 049dfca2..e06cdaae 100644
--- a/lib/sisu/v3dv/xhtml_table.rb
+++ b/lib/sisu/v3dv/xhtml_table.rb
@@ -58,11 +58,11 @@
 =end
 module SiSU_XHTML_Table
   require_relative 'defaults'                           # defaults.rb
-  class Table_xhtml
+  class TableXHTML
     @@tablehead=0
     @@tablefoot=[] #watch
     def initialize(table)
-      @table_obj,@vz=table,SiSU_Env::Get_init.instance.skin
+      @table_obj,@vz=table,SiSU_Env::GetInit.instance.skin
     end
     def table
       table_obj=@table_obj
diff --git a/lib/sisu/v3dv/xml.rb b/lib/sisu/v3dv/xml.rb
index 27a57f4e..095a1fe2 100644
--- a/lib/sisu/v3dv/xml.rb
+++ b/lib/sisu/v3dv/xml.rb
@@ -75,7 +75,7 @@ module SiSU_XML_SAX
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       begin
@@ -93,7 +93,7 @@ module SiSU_XML_SAX
           SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"file://#{@md.file.output_path.xml_sax.dir}/#{@md.file.base_filename.xml_sax}").flow if @opt.cmd =~/[MV]/
         end
         SiSU_XML_SAX::Source::Songsheet.new(@particulars).song
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
         #file closed in songsheet
       end
@@ -109,7 +109,7 @@ module SiSU_XML_SAX
           SiSU_XML_SAX::Source::Scroll.new(@particulars).songsheet
           SiSU_XML_SAX::Source::Tidy.new(@md,@file.place_file.xml_sax.dir).xml if @md.opt.cmd =~/[vVM]/ # test wellformedness, comment out when not in use
           SiSU_Rexml::Rexml.new(@md,@file.place_file.xml_sax.dir).xml if @md.opt.cmd =~/M/ # test rexml parsing, comment out when not in use #debug
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
         end
       end
@@ -122,9 +122,9 @@ module SiSU_XML_SAX
       @@xml={ body: [], open: [], close: [], head: [] }
       def initialize(particulars)
         @env,@md,@dal_array=particulars.env,particulars.md,particulars.dal_array
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @trans=SiSU_XML_Munge::Trans.new(@md)
-        @sys=SiSU_Env::System_call.new
+        @sys=SiSU_Env::SystemCall.new
       end
       def songsheet
         pre
@@ -283,7 +283,7 @@ WOK
         @@xml[:body] << "#{Ax[:tab]*0}</object>"
       end
       def table_structure(dob)
-        table=SiSU_XHTML_Shared::Table_xhtml.new(dob)
+        table=SiSU_XHTML_Shared::TableXHTML.new(dob)
         @@xml[:body] << %{#{Ax[:tab]*0}<object id="#{dob.ocn}">}
         @@xml[:body] << %{#{Ax[:tab]*1}<ocn>#{dob.ocn}</ocn>}
         @@xml[:body] << %{#{Ax[:tab]*1}<text class="table">#{Ax[:tab]*1}}
@@ -314,12 +314,12 @@ WOK
           if dob.obj !~/(^#{Rx[:meta]}|#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
             if defined? dob.ocn #look to move to format section
               ocn=((dob.ocn.to_s =~/\d+/) ? dob.ocn : nil)
-              @p_num=SiSU_XML_Format::Paragraph_number.new(@md,ocn)
+              @p_num=SiSU_XML_Format::ParagraphNumber.new(@md,ocn)
             end
             if not @rcdc
               if defined? dob.ocn \
               and dob.ocn.to_s =~/\d+/
-                x=SiSU_XML_Format::Format_seg.new(@md,dob)
+                x=SiSU_XML_Format::FormatSeg.new(@md,dob)
                 if dob.is=='heading'
                   xml_structure(dob)
                   dob.obj=case dob.ln
@@ -359,11 +359,11 @@ WOK
               elsif dob.obj =~/(#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
               elsif dob.obj =~/MetaData/
                 txt_obj={ txt: '<br /><a name="metadata">MetaData</a>' }
-                format_scroll=Format_scroll.new(@md,txt_obj)
+                format_scroll=FormatScroll.new(@md,txt_obj)
                 dob.obj=format_scroll.bold_para
               elsif dob.obj =~/(Owner Details)/
 #               txt_obj={ txt: '<br /><a name="owner.details">Owner Details</a>' }
-#               format_scroll=Format_scroll.new(@md,txt_obj)
+#               format_scroll=FormatScroll.new(@md,txt_obj)
 #               @@xml[:owner_details]=format_scroll.bold_para
                 dob.obj=''
               end
@@ -374,7 +374,7 @@ WOK
               if dob.obj =~/.*<:#>.*$/ #investigate removal
                 dob.obj=if dob.obj =~ /#{Mx[:pa_o]}:i[1-9]#{Mx[:pa_c]}/
                   txt_obj={ txt: dob }
-                  format_text=Format_text_object.new(@md,txt_obj)
+                  format_text=FormatTextObject.new(@md,txt_obj)
                   format_text.scr_inden_ocn_e_no_paranum
                 end
               end
@@ -395,9 +395,9 @@ WOK
       end
       def pre
         rdf=SiSU_XML_Tags::RDF.new(@md)
-        dir=SiSU_Env::Info_env.new
+        dir=SiSU_Env::InfoEnv.new
         @@xml[:head],@@xml[:body]=[],[]
-        css=SiSU_Env::CSS_stylesheet.new(@md)
+        css=SiSU_Env::CSS_Stylesheet.new(@md)
         encoding=if @sys.locale =~/utf-?8/i; '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
         else                                 '<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>'
         end
@@ -444,7 +444,7 @@ WOK
     class Tidy
       def initialize(md,file)
         @md,@file=md,file
-        @prog=SiSU_Env::Info_program.new
+        @prog=SiSU_Env::InfoProgram.new
       end
       def xml
         if @prog.tidy !=false #note values can be other than true
@@ -455,7 +455,7 @@ WOK
               tell.grey_open
             end
             tidyfile='/dev/null' #don't want one or screen output, check for alternative flags
-            tidy=SiSU_Env::System_call.new(@file,tidyfile)
+            tidy=SiSU_Env::SystemCall.new(@file,tidyfile)
             tidy.well_formed?
             tell.p_off unless @md.opt.cmd =~/q/
           end
diff --git a/lib/sisu/v3dv/xml_dom.rb b/lib/sisu/v3dv/xml_dom.rb
index 8a6394ad..63a7814a 100644
--- a/lib/sisu/v3dv/xml_dom.rb
+++ b/lib/sisu/v3dv/xml_dom.rb
@@ -73,7 +73,7 @@ module SiSU_XML_DOM
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
     end
     def read
       begin
@@ -91,7 +91,7 @@ module SiSU_XML_DOM
           SiSU_Screen::Ansi.new(@opt.cmd,@opt.fns,"file://#{@md.file.output_path.xml_dom.dir}/#{@md.file.base_filename.xml_dom}").flow if @opt.cmd =~/[MV]/
         end
         SiSU_XML_DOM::Source::Songsheet.new(@particulars).songsheet
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -106,7 +106,7 @@ module SiSU_XML_DOM
           SiSU_XML_DOM::Source::Scroll.new(@particulars).songsheet
           SiSU_XML_DOM::Source::Tidy.new(@md,@file.place_file.xml_dom.dir).xml if @md.opt.cmd =~/[vVM]/ # test wellformedness, comment out when not in use
           SiSU_Rexml::Rexml.new(@md,@file.place_file.xml_dom.dir).xml if @md.opt.cmd =~/M/ # test rexml parsing, comment out when not in use #debug
-        rescue; SiSU_Errors::Info_error.new($!,$@,@md.opt.cmd,@md.fns).error
+        rescue; SiSU_Errors::InfoError.new($!,$@,@md.opt.cmd,@md.fns).error
         ensure
         end
       end
@@ -118,9 +118,9 @@ module SiSU_XML_DOM
       @@xml={ body: [], open: [], close: [], head: [], sc: [] }
       def initialize(particulars)
         @env,@md,@dal_array=particulars.env,particulars.md,particulars.dal_array
-        @vz=SiSU_Env::Get_init.instance.skin
+        @vz=SiSU_Env::GetInit.instance.skin
         @trans=SiSU_XML_Munge::Trans.new(@md)
-        @sys=SiSU_Env::System_call.new
+        @sys=SiSU_Env::SystemCall.new
       end
       def songsheet
         pre
@@ -333,7 +333,7 @@ WOK
         dob
       end
       def table_structure(dob) #tables
-        table=SiSU_XHTML_Shared::Table_xhtml.new(dob)
+        table=SiSU_XHTML_Shared::TableXHTML.new(dob)
       end
       def markup(data)
         xml_sc(@md)
@@ -352,12 +352,12 @@ WOK
             @rcdc=true
           end
           if dob !~/(^#{Rx[:meta]}|#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
-            @p_num=SiSU_XML_Format::Paragraph_number.new(@md,dob.ocn) if defined? dob.ocn
+            @p_num=SiSU_XML_Format::ParagraphNumber.new(@md,dob.ocn) if defined? dob.ocn
             if not @rcdc
               if defined? dob.ocn \
               and dob.ocn.to_s =~/\d+/
-                format_scroll=SiSU_XML_Format::Format_scroll.new(@md,dob) if dob.is=='para' and dob.indent ##FIX
-                x=SiSU_XML_Format::Format_seg.new(@md,dob)
+                format_scroll=SiSU_XML_Format::FormatScroll.new(@md,dob) if dob.is=='para' and dob.indent ##FIX
+                x=SiSU_XML_Format::FormatSeg.new(@md,dob)
                 if dob.is=='heading'
                   if dob.ln==1
                     type="heading_section_#{dob.ln.to_s}"
@@ -430,7 +430,7 @@ WOK
               elsif dob.obj =~/(#{Mx[:br_eof]}|#{Mx[:br_endnotes]})/
               elsif dob.obj =~/(MetaData)/
                 txt_obj={ txt: '<br /><a name="metadata">MetaData</a>' }
-                format_scroll=Format_scroll.new(@md,txt_obj)
+                format_scroll=FormatScroll.new(@md,txt_obj)
                 dob.obj=format_scroll.bold_para
               elsif dob.obj =~/(Owner Details)/
                 dob.obj=''
@@ -442,7 +442,7 @@ WOK
               if dob.obj =~/.*<:#>.*$/
                 dob.obj=if dob.obj =~ /#{Mx[:pa_o]}:i[1-9]#{Mx[:pa_c]}/
                   txt_obj={ txt: dob.obj }
-                  format_text=Format_text_object.new(@md,txt_obj)
+                  format_text=FormatTextObject.new(@md,txt_obj)
                   format_text.scr_inden_ocn_e_no_paranum
                 end
               end
@@ -472,8 +472,8 @@ WOK
       end
       def pre
         rdf=SiSU_XML_Tags::RDF.new(@md)
-        dir=SiSU_Env::Info_env.new
-        css=SiSU_Env::CSS_stylesheet.new(@md)
+        dir=SiSU_Env::InfoEnv.new
+        css=SiSU_Env::CSS_Stylesheet.new(@md)
         encoding=if @sys.locale =~/utf-?8/i; '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
         else                                 '<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>'
         end
@@ -521,7 +521,7 @@ WOK
     class Tidy
       def initialize(md,file)
         @md,@file=md,file
-        @prog=SiSU_Env::Info_program.new
+        @prog=SiSU_Env::InfoProgram.new
       end
       def xml
         if @prog.tidy !=false
@@ -530,7 +530,7 @@ WOK
             tell=SiSU_Screen::Ansi.new(@md.opt.cmd,'invert','','')
             tell.grey_open unless @md.opt.cmd =~/q/
             tidyfile='/dev/null' #don't want one or screen output, check for alternative flags
-            tidy=SiSU_Env::System_call.new(@file,tidyfile)
+            tidy=SiSU_Env::SystemCall.new(@file,tidyfile)
             tidy.well_formed?
             tell.p_off unless @md.opt.cmd =~/q/
           end
diff --git a/lib/sisu/v3dv/xml_fictionbook.rb b/lib/sisu/v3dv/xml_fictionbook.rb
index 31dcd126..8a0819eb 100644
--- a/lib/sisu/v3dv/xml_fictionbook.rb
+++ b/lib/sisu/v3dv/xml_fictionbook.rb
@@ -76,7 +76,7 @@ module SiSU_XML_Fictionbook
         @md=SiSU_Param::Parameters.new(@opt).get
         @dal_array=SiSU_DAL::Source.new(@opt).get
         SiSU_XML_Fictionbook::Source::Scroll.new(@dal_array,@md).songsheet
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
@@ -103,8 +103,8 @@ module SiSU_XML_Fictionbook
         tail
       end
       def head
-        version=SiSU_Env::Info_version.instance.get_version
-        rb_ver=SiSU_Env::Info_version.instance.rbversion
+        version=SiSU_Env::InfoVersion.instance.get_version
+        rb_ver=SiSU_Env::InfoVersion.instance.rbversion
         date_available=if defined? @md.date.available; "\n     <p>#{@md.date.available} Initial version</p>"
         else ''
         end
diff --git a/lib/sisu/v3dv/xml_format.rb b/lib/sisu/v3dv/xml_format.rb
index f2305260..e3e4b380 100644
--- a/lib/sisu/v3dv/xml_format.rb
+++ b/lib/sisu/v3dv/xml_format.rb
@@ -61,7 +61,7 @@ module SiSU_XML_Format
   require_relative 'param'                              # param.rb
     include SiSU_Param
   include SiSU_Viz
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(md,paranum)
       @md=md
       @paranum=(paranum ? (/(\d+)/m.match(paranum)[1]) : nil)
@@ -84,7 +84,7 @@ module SiSU_XML_Format
       p_num_goto
     end
   end
-  class Head_information
+  class HeadInformation
     def initialize #dc rdf
       @full_title=@subtitle=@author=@subject=@description=@publisher=@contributor=@date=@type=@format=@identifier=@source=@language=@relation=@coverage=@rights=@copyright=@owner=@keywords=''
       @md=@@md
@@ -193,7 +193,7 @@ module SiSU_XML_Format
       @copyright=%{<meta name="copyright" content="#{@md.rights.copyright.all}" />\n} if @md.rights.copyright.all # possibly redundant see dc.rights
       @owner=%{<meta name="owner" content="#{@md.owner}" />\n} if @md.owner
       @keywords=%{<meta name="keywords" content="#{@md.keywords}" />\n} if @md.keywords
-      @vz=SiSU_Env::Get_init.instance.skin #margin,paragraph,table,banner,url,png,txt,color,font,nav_txt,nav_png,credits,js,php
+      @vz=SiSU_Env::GetInit.instance.skin #margin,paragraph,table,banner,url,png,txt,color,font,nav_txt,nav_png,credits,js,php
       @index='index'
     end
     def toc_head_escript #embedded script in this case PHP
@@ -274,7 +274,7 @@ module SiSU_XML_Format
 WOK
     end
   end
-  class Format_text_object
+  class FormatTextObject
     attr_accessor :md,:txt,:format,:paranum,:p_num,:para_id,:headname,:font
    def initialize(md,dob)
       @md,@dob=md,dob
@@ -282,19 +282,19 @@ WOK
         @paranum=/(\d+)/m.match(@dob[:ocn])[1]
         @headname=''
         @headname=%{<a name="h#{dob.name}"></a>} if defined? dob.name
-        @p_num=SiSU_XML_Format::Paragraph_number.new(@md,dob.ocn)
+        @p_num=SiSU_XML_Format::ParagraphNumber.new(@md,dob.ocn)
       end
       rgx=/^[1-6-]~{1,2}/ #watch
       @lnk_url=@lnk_url.gsub(rgx,'') if @lnk_url =~rgx
       rgx=/~\{\d+\s+(.+?)\}~/
       @lnk_url=@lnk_url.gsub(rgx,'\1') if @lnk_url =~rgx
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def scr_endnote_body
       "<endnote>#{@txt}</endnote> "
     end
   end
-  class Format_scroll < Format_text_object
+  class FormatScroll < FormatTextObject
     def initialize(md,dob)
       super(md,dob)
     end
@@ -327,11 +327,11 @@ WOK
       %{<p class="paranum"><font size="1" color="#777777">&nbsp;&nbsp;#{@dob.ocn}</font></p>\n}
     end
   end
-  class Paragraph_number
+  class ParagraphNumber
     def initialize(md,ocn)
       @md,@ocn=md,ocn.to_s
       @ocn ||=''
-      vz=SiSU_Env::Get_init.instance.skin
+      vz=SiSU_Env::GetInit.instance.skin
       @skin_no_ocn=if not ocn
         true
       elsif defined? vz.ocn_display_off \
@@ -366,15 +366,15 @@ WOK
       %{<a href="##{@ocn}">}
     end
   end
-  class Head_information
+  class HeadInformation
     include SiSU_Viz
     attr_reader :md,:sfx,:pdf,:rdf,:vz
     def initialize(md)
       @md=md
       @rdf=SiSU_XML_Tags::RDF.new(md)
       # DublinCore 1 - title
-      @vz=SiSU_Env::Get_init.instance.skin
-      @css=SiSU_Env::CSS_stylesheet.new(md)
+      @vz=SiSU_Env::GetInit.instance.skin
+      @css=SiSU_Env::CSS_Stylesheet.new(md)
       @seg_name_html=(SiSU_HTML::Source::Seg.new.seg_name_html || [])
       @seg_name_html_tracker=(SiSU_HTML::Source::Seg.new.seg_name_html_tracker || [])
       @index='index'
@@ -406,11 +406,11 @@ WOK
 </html>}
     end
   end
-  class Widget < Head_information
+  class Widget < HeadInformation
     def initialize(md)
       super(md)
       @md=md
-      @cf_defaults=SiSU_Env::Info_processing_flag.new
+      @cf_defaults=SiSU_Env::InfoProcessingFlag.new
     end
     def home
       %{<td align="center" bgcolor=#{@vz.color_band2}>
@@ -438,7 +438,7 @@ WOK
 }
     end
     def search
-      env=SiSU_Env::Info_env.new(@md.fns,@md)
+      env=SiSU_Env::InfoEnv.new(@md.fns,@md)
       env.widget.search_form('sisusearch',nil,nil,true)
     end
     def manifest
@@ -491,7 +491,7 @@ WOK
   end
   class XML
   end
-  class Head_toc < Head_information
+  class HeadToc < HeadInformation
     def initialize(md)
       super(md)
       @md=md
@@ -864,7 +864,7 @@ WOK
 }
     end
   end
-  class Head_seg < Head_information
+  class HeadSeg < HeadInformation
     def initialize(md) #(md='')
       super(md)
     end
@@ -979,7 +979,7 @@ WOK
     def doc_types #used in seg_nav_band ###
       scroll=seg=''
       wgt=Widget.new(@md)
-      #dir=SiSU_Env::Info_env.new(@md.fns)
+      #dir=SiSU_Env::InfoEnv.new(@md.fns)
       x=if @md.concord_make
         %{
 <table summary="segment navigation available documents types: toc,doc,pdf,concordance" border="0" cellpadding="3" cellspacing="0">
@@ -1025,7 +1025,7 @@ WOK
   <font size="2">}
     end
     def header_advert_local_1
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <center>
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -1037,7 +1037,7 @@ WOK
 </center>}
     end
     def header_advert_local_2
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <center>
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -1049,7 +1049,7 @@ WOK
 </center>}
     end
     def header_advert_external
-      dir=SiSU_Env::Info_env.new(@fns)
+      dir=SiSU_Env::InfoEnv.new(@fns)
       %{  <center>
 <table summary="image" border="0" cellpadding="3" cellspacing="0" align="center">
 <tr><td align="center" bgcolor="white">
@@ -1163,7 +1163,7 @@ WOK
 }
     end
   end
-  class Head_scroll < Head_toc
+  class HeadScroll < HeadToc
     def initialize(md) #(md='')
       super(md)
     end
@@ -1197,8 +1197,8 @@ WOK
 #{@vz.paragraph_txt}}
     end
   end
-  class Format_text_object
-    @vz=SiSU_Env::Get_init.instance.skin
+  class FormatTextObject
+    @vz=SiSU_Env::GetInit.instance.skin
     attr_accessor :md,:dob,:txt,:ocn,:format,:table,:link,:linkname,:paranum,:p_num,:headname,:banner,:url
     def initialize(md,t_o)
       @md,@t_o=md,t_o
@@ -1233,7 +1233,7 @@ WOK
       end
       if defined? @t_o.ocn
         ocn=((@t_o.ocn.to_s =~/\d+/) ? @t_o.ocn : nil)
-        @p_num=Paragraph_number.new(@md,ocn)
+        @p_num=ParagraphNumber.new(@md,ocn)
       end
       if @format and not @format.empty?
         if @format=~/^\d:(\S+)/ #need more reliable marker #if @format =~ /#{Rx[:lv]}/
@@ -1244,7 +1244,7 @@ WOK
         end
       end
       @dob=t_o if defined? t_o.is
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
     def endnote_body
       %{
@@ -1417,13 +1417,13 @@ WOK
       %{<p class="centerbold">#{@txt}</p>\n}
     end
   end
-  class Format_scroll < Format_text_object
+  class FormatScroll < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
-      @vz=SiSU_Env::Get_init.instance.skin
+      @vz=SiSU_Env::GetInit.instance.skin
     end
   end
-  class Format_seg < Format_text_object
+  class FormatSeg < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
     end
@@ -1557,7 +1557,7 @@ WOK
       "<center>#{@txt}</center>"
     end
   end
-  class Format_toc < Format_text_object
+  class FormatToc < FormatTextObject
     def initialize(md,txt)
       super(md,txt)
     end
diff --git a/lib/sisu/v3dv/xml_scaffold.rb b/lib/sisu/v3dv/xml_scaffold.rb
index 31db19a2..1ae31d0f 100644
--- a/lib/sisu/v3dv/xml_scaffold.rb
+++ b/lib/sisu/v3dv/xml_scaffold.rb
@@ -66,14 +66,14 @@ module SiSU_XML_Scaffold
   class Source
     def initialize(opt)
       @opt=opt
-      @particulars=SiSU_Particulars::Combined_singleton.instance.get_all(opt)
+      @particulars=SiSU_Particulars::CombinedSingleton.instance.get_all(opt)
       @sp='  '
     end
     def read
       begin
         @md,@dal_array=@particulars.md,@particulars.dal_array
         SiSU_XML_Scaffold::Source::Scroll.new(@dal_array,@md).songsheet
-      rescue; SiSU_Errors::Info_error.new($!,$@,@opt.cmd,@opt.fns).error
+      rescue; SiSU_Errors::InfoError.new($!,$@,@opt.cmd,@opt.fns).error
       ensure
       end
     end
diff --git a/lib/sisu/v3dv/xml_tables.rb b/lib/sisu/v3dv/xml_tables.rb
index 1f154bda..7782bb88 100644
--- a/lib/sisu/v3dv/xml_tables.rb
+++ b/lib/sisu/v3dv/xml_tables.rb
@@ -63,22 +63,22 @@ module SiSU_Tables
     @@tablehead=0
     @@tablefoot=[] #watch #bug??? #check was @@tablefoot
     def initialize(one,ocn='')
-      @one,@parablock,@ocn,@vz=one,one,ocn,SiSU_Env::Get_init.instance.skin
+      @one,@parablock,@ocn,@vz=one,one,ocn,SiSU_Env::GetInit.instance.skin
     end
     def table_split                                                            #% used but, no longer operational, revisit
       @new_content=[]
       @one.split(/\n/).each do |parablock|
-        table=Table_xml.new("#{parablock}\n")
+        table=TableXML.new("#{parablock}\n")
         @new_content << table.table
       end
       @new_content.join
     end
   end
-  class Table_xml <Table
+  class TableXML <Table
     @@tablehead=0
     @@tablefoot=[]
     def initialize(one,ocn='')
-      @one,@parablock,@ocn,@vz=one,one,ocn,SiSU_Env::Get_init.instance.skin
+      @one,@parablock,@ocn,@vz=one,one,ocn,SiSU_Env::GetInit.instance.skin
     end
     def table
       m=@parablock[/<!f(.+?)!>/,1]
@@ -122,11 +122,11 @@ module SiSU_Tables
       @parablock
     end
   end
-  class Table_xml_exp <Table
+  class TableXMLexp <Table
     @@tablehead=0
     @@tablefoot=[]
     def initialize(one)
-      @one,@parablock,@vz=one,one,SiSU_Env::Get_init.instance.skin
+      @one,@parablock,@vz=one,one,SiSU_Env::GetInit.instance.skin
     end
     def table_head(inf)
       %{<table summary="normal text css" width="100%" border="0" bgcolor="white" cellpadding="2" align="center">
diff --git a/lib/sisu/v3dv/zap.rb b/lib/sisu/v3dv/zap.rb
index 3e967e32..9c9b61eb 100644
--- a/lib/sisu/v3dv/zap.rb
+++ b/lib/sisu/v3dv/zap.rb
@@ -63,12 +63,12 @@ module SiSU_Zap
   class Source
     def initialize(opt)
       @opt=opt
-      @env=SiSU_Env::Info_env.new(@opt.fns)
+      @env=SiSU_Env::InfoEnv.new(@opt.fns)
       @zap_path="#{@env.path.output}/#{@env.fnb}"
-      @zap=SiSU_Env::Clean_output.new(@opt)
+      @zap=SiSU_Env::CleanOutput.new(@opt)
     end
     def read
-      if SiSU_Env::Info_settings.new.permission?('zap')
+      if SiSU_Env::InfoSettings.new.permission?('zap')
         tell=SiSU_Screen::Ansi.new(@opt.cmd,"Clean files related to processing #{@opt.cmd} ->","#{@opt.fns} -> #{@zap_path}")
         @zap.zap.main_output
         @zap.zap.site_map