org babel block delimiters

12 files changed, 192 insertions, 214 deletions

diff --git a/maker.org b/maker.org
index a46006a..e306483 100644
--- a/maker.org
+++ b/maker.org
@@ -16,57 +16,51 @@
 ** settings [+2]                                                   :settings:
 *** alternative D compilers [+1]                                   :compiler:
 **** dmd                                                                 :dmd:
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                          :exports none
+#+BEGIN_SRC makefile   :padline no                              :tangle makefile
 DMD=dmd
 DMD_FLAGS=-de -w
 DMD_FLAGS_RELEASE=-release
 DMD_FLAG_BINOF=-of
+#+END_SRC
 
-#+end_src
 **** ldc2                                                                :ldc:
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                          :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 LDC=ldc2
 LDC_FLAGS=-w
 LDC_FLAGS_RELEASE=-release
 LDC_FLAG_BINOF=-of=
+#+END_SRC
 
-#+end_src
 **** gdc                                                                 :gdc:
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                          :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 GDC=gdc
 #GDC=gdc-5
 GDC_FLAGS=
 GDC_FLAGS_RELEASE=-frelease
 GDC_FLAG_BINOF=-o
+#+END_SRC
 
-#+end_src
 *** set/select: ~D compiler~ & ~debug flags~ [+1] [2/2]              :select:
 - [X] Set D_COMPILER (one of DMD LDC or GDC)
 - [X] Set debug flags (using DMD standard flag -debug=)
 **** SET compiler: "SET_D_COMPILER=":                         :compiler:select:
 Set D_COMPILER one of DMD LDC or GDC e.g.:
   SET_D_COMPILER=DMD
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                          :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 # set D_COMPILER one of DMD LDC or GDC:
 SET_D_COMPILER=LDC
+#+END_SRC
 
-#+end_src
 **** SET debug flags: "SET_DC_FLAGS_DEBUG_EXTRA=-debug=": :compiler:flags:debug:
 Set debug flags using DMD standard flag -debug= e.g.:
   SET_DC_FLAGS_DEBUG_EXTRA=-debug=headings -debug=bookindex
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                          :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 SET_DC_FLAGS_DEBUG_EXTRA=-debug=headings -debug=bookindex
+#+END_SRC
 
-#+end_src
 *** D compiler settings [+1]                              :settings:compiler:
 **** compiler settings
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                          :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 DC=$($(SET_D_COMPILER))
 DC_FLAGS=$($(shell echo $(SET_D_COMPILER)_FLAGS))
 DC_FLAGS_RELEASE=$($(shell echo $(SET_D_COMPILER)_FLAGS_RELEASE))
@@ -74,11 +68,10 @@ DC_FLAG_BINOF=$($(shell echo $(SET_D_COMPILER)_FLAG_BINOF))
 DC_FLAGS_DEBUG_DEFAULT_SET=-unittest -debug=checkdoc -debug=summary
 DC_FLAGS_DEBUG_SET=\
 	$(shell echo $(DC_FLAGS_DEBUG_DEFAULT_SET) $(SET_DC_FLAGS_DEBUG_EXTRA))
+#+END_SRC
 
-#+end_src
 **** compiler conditional settings (depending on selected D compiler)
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                          :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 ifeq ($(DC), $(DMD))
 	DC_FLAGS_DEBUG :=$(shell echo $(DC_FLAGS_DEBUG_SET))
 endif
@@ -88,21 +81,19 @@ endif
 ifeq ($(DC), $(GDC))
 	DC_FLAGS_DEBUG :=$(shell echo $(DC_FLAGS_DEBUG_SET)| sed -e "s/-debug/-fdebug/g")
 endif
+#+END_SRC
 
-#+end_src
 *** Project Details                                             :project:sdp:
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                           :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 PRG_NAME=sdp
 PRG_SRC=$(PRG_NAME).d
 PRG_SRCDIR=./lib
 PRG_BIN=$(PRG_NAME)
 PRG_BINDIR=bin
+#+END_SRC
 
-#+end_src
 *** Emacs Org settings                                  :settings:emacs:org:
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                           :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 # ORG
 EMACSLISP=/usr/share/emacs/site-lisp
 EMACSLISP_ORG=~/.emacs.d/elpa/org-20151005
@@ -110,8 +101,8 @@ EMACSLISP_ORG_CONTRIB=~/.emacs.d/elpa/org-plus-contrib-20151005
 ORGFILELIST=$(shell echo `ls -1 maker.org org/*.org`)
 ORGFILES=""
 ORGDIR=$(shell echo `pwd`)
+#+END_SRC
 
-#+end_src
 ** "make" commands [+2]                                       :make:commands:
 - build commands
   - build
@@ -130,8 +121,7 @@ ORGDIR=$(shell echo `pwd`)
 
 *** build commands [+1]
 **** build rebuild
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                           :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 all: build
 
 build: $(PRG_SRCDIR)/$(PRG_SRC)
@@ -140,11 +130,10 @@ build: $(PRG_SRCDIR)/$(PRG_SRC)
 	$(PRG_SRCDIR)/$(PRG_SRC)
 
 rebuild: $(PRG_SRCDIR)/$(PRG_SRC) $(PRG_BINDIR)/$(PRG_BIN).o clean build
-#+end_src
-**** debug
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                           :exports none
+#+END_SRC
 
+**** debug
+#+BEGIN_SRC makefile                                            :tangle makefile
 debug: $(PRG_SRCDIR)/$(PRG_SRC)
 	$(DC) $(DC_FLAGS) $(DC_FLAGS_DEBUG) \
 	$(DC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
@@ -164,20 +153,18 @@ debug_gdc: $(PRG_SRCDIR)/$(PRG_SRC)
 	$(GDC) $(GDC_FLAGS) $(GDC_FLAGS_DEBUG) \
 	$(GDC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
 	$(PRG_SRCDIR)/$(PRG_SRC)
-#+end_src
-**** release
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                           :exports none
+#+END_SRC
 
+**** release
+#+BEGIN_SRC makefile                                            :tangle makefile
 release: distclean_and_init tangle $(PRG_SRCDIR)/$(PRG_SRC)
 	$(DC) $(DC_FLAGS) $(DC_FLAGS_RELEASE) \
 	$(DC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
 	$(PRG_SRCDIR)/$(PRG_SRC)
+#+END_SRC
 
-#+end_src
 *** init clean distclean etc.
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                             :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 init:
 	mkdir -p $(PRG_SRCDIR); \
 	mkdir -p $(PRG_BINDIR);
@@ -194,11 +181,10 @@ distclean: init $(PRG_BINDIR) expunge
 distclean_and_init: init $(PRG_BINDIR) expunge
 	mkdir -p $(PRG_SRCDIR); \
 	mkdir -p $(PRG_BINDIR);
+#+END_SRC
 
-#+end_src
 *** Org Babel Tangle batch process command
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                             :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 tangle:
 	for f in $(ORGFILELIST); do \
 		ORGFILES="$$ORGFILES \"$$f\""; \
@@ -217,27 +203,26 @@ tangle:
 		    (setq-local org-src-preserve-indentation t) \
 			(org-babel-tangle) \
 			(kill-buffer)) '($$ORGFILES)))" 2>&1
+#+END_SRC
 
-#+end_src
 *** Git snapshot
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                             :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 gitsnapshot: distclean_and_init tangle
 	git commit -a
+#+END_SRC
 
-#+end_src
 ** phony
-#+name: makefile_maker
-#+BEGIN_SRC makefile                                               :exports none
+#+BEGIN_SRC makefile                                            :tangle makefile
 .PHONY : all build rebuild debug release \
 	clean distclean init \
 	tangle
+#+END_SRC
 
-#+end_src
 * sh script to batch process emacs org babel tangle     :shell_script:tangle:
   [http://orgmode.org/manual/Batch-execution.html]
 creates a shell batch script called "tangle", that will tangle (emacs org babel tangle) org files in ./org/ to create .d source files in ./lib/sdp/ (similar functionality is contained within the "makefile" created by this "maker.org" file make tangle)
-#+BEGIN_SRC sh :tangle tangle :tangle-mode (identity #o755) :shebang #!/bin/sh
+
+#+BEGIN_SRC sh :tangle tangle :padline no :tangle-mode (identity #o755) :shebang #!/bin/sh
 # -*- mode: shell-script -*-
 # tangle files with org-mode
 DIR=`pwd`
@@ -247,7 +232,7 @@ EMACSLISP_ORG=~/.emacs.d/elpa/org-20151005
 EMACSLISP_ORG_CONTRIB=~/.emacs.d/elpa/org-plus-contrib-20151005
 # wrap each argument in the code required to call tangle on it
 for i in $@; do
- ORGFILES="$ORGFILES \"$i\""
+  ORGFILES="$ORGFILES \"$i\""
 done
 emacs --batch -Q -q \
 --eval "(progn
@@ -260,11 +245,4 @@ emacs --batch -Q -q \
   (setq-local org-src-preserve-indentation t)
   (org-babel-tangle)
   (kill-buffer)) '($ORGFILES)))" 2>&1 #|grep tangled
-#+end_src
-
-* tangle                                                             :tangle:
-** makefile:                                                   :makefile:
-#+name: tangle_ao_rgx
-#+BEGIN_SRC makefile  :tangle makefile     :exports none   :noweb yes
-<<makefile_maker>>
-#+end_src
+#+END_SRC
diff --git a/org/ao_abstract_doc_source.org b/org/ao_abstract_doc_source.org
index 257213c..bfda427 100644
--- a/org/ao_abstract_doc_source.org
+++ b/org/ao_abstract_doc_source.org
@@ -146,7 +146,7 @@ scope(exit) {
 }
 auto dochead_make = parseJSON(header_make_jsonstr).object;
 auto dochead_metadata = parseJSON(header_metadata_jsonstr).object;
-#+end_src
+#+END_SRC
 
 ** loop: process document body [+7]
 *** scope
@@ -173,7 +173,7 @@ debug(srclines) {
     writeln(scr_txt_marker["green"], line);
   }
 }
-#+end_src
+#+END_SRC
 *** check whether ocn is on or turned off
 #+name: abs_loop_body_00
 #+BEGIN_SRC d                                                  :exports none
@@ -216,7 +216,7 @@ if ((!line.empty) && (ft["ocn_status_multi_obj"] == 0)) {
     }
   }
 }
-#+end_src
+#+END_SRC
 *** separate regular markup text from code blocks [+6]
 **** code blocks
 #+name: abs_loop_body_00
@@ -252,13 +252,13 @@ if (ft["code"] == 1) {
       object["obj"] ~= line ~= "\n";             // code (tic) line
     }
   }
-#+end_src
+#+END_SRC
 **** non code objects (other blocks or regular text) [+5]
 #+name: abs_loop_body_00
 #+BEGIN_SRC d                                                  :exports none
 } else if (!match(line, rgx.regular_parse_skip)) {
 /* object other than code block object (includes regular text paragraph) */
-#+end_src
+#+END_SRC
 ***** within block group [+1]
 ****** within block group: biblio
 #+name: abs_loop_body_non_code_obj
@@ -347,7 +347,7 @@ if (((match(line, rgx.heading_biblio)
     biblio_arr_json[count_biblio_entry] = s;
     biblio_tag_entry="";
   }
-#+end_src
+#+END_SRC
 ****** within block group: poem
 #+name: abs_loop_body_non_code_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -548,7 +548,7 @@ if (((match(line, rgx.heading_biblio)
       }
     }
   }
-#+end_src
+#+END_SRC
 ****** within block group: group
 #+name: abs_loop_body_non_code_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -583,7 +583,7 @@ if (((match(line, rgx.heading_biblio)
       object["obj"] ~= line ~= "\n";           // build group array (or string)
     }
   }
-#+end_src
+#+END_SRC
 ****** within block group: block
 #+name: abs_loop_body_non_code_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -618,7 +618,7 @@ if (((match(line, rgx.heading_biblio)
       object["obj"] ~= line ~= "\n";           // build block array (or string)
     }
   }
-#+end_src
+#+END_SRC
 ****** within block group: quote
 #+name: abs_loop_body_non_code_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -653,7 +653,7 @@ if (((match(line, rgx.heading_biblio)
       object["obj"] ~= line ~= "\n";           // build quote array (or string)
     }
   }
-#+end_src
+#+END_SRC
 ****** within block group: table
 #+name: abs_loop_body_non_code_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -688,13 +688,13 @@ if (((match(line, rgx.heading_biblio)
       object["obj"] ~= line ~= "\n";           // build table array (or string)
     }
   }
-#+end_src
+#+END_SRC
 ***** not within block group [+4]
 #+name: abs_loop_body_non_code_obj
 #+BEGIN_SRC d                                                  :exports none
 } else {
 /* not within a block group */
-#+end_src
+#+END_SRC
 ****** assert
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -704,7 +704,7 @@ assert(
   "block status: none or closed"
 );
 assertions_flag_types_block_status_none_or_closed(ft);
-#+end_src
+#+END_SRC
 ****** open curly block group [+1]
 ******* open block group: code
 #+name: abs_loop_body_open_block_obj
@@ -722,7 +722,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["code"] = 1;
   ft["curly_code"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: poem
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -747,7 +747,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["verse_new"] = 1;
   ft["poem"] = 1;
   ft["curly_poem"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: group
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -764,7 +764,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["group"] = 1;
   ft["curly_group"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: block
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -781,7 +781,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["block"] = 1;
   ft["curly_block"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: quote
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -798,7 +798,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["quote"] = 1;
   ft["curly_quote"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: table
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -815,7 +815,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["table"] = 1;
   ft["curly_table"] = 1;
-#+end_src
+#+END_SRC
 ****** open tic block group [+1]
 ******* open block group: code
 #+name: abs_loop_body_open_block_obj
@@ -833,7 +833,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["code"] = 1;
   ft["tic_code"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: poem
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -858,7 +858,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["verse_new"] = 1;
   ft["poem"] = 1;
   ft["tic_poem"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: group
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -875,7 +875,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["group"] = 1;
   ft["tic_group"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: block
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -892,7 +892,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["block"] = 1;
   ft["tic_block"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: quote
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -909,7 +909,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["quote"] = 1;
   ft["tic_quote"] = 1;
-#+end_src
+#+END_SRC
 ******* open block group: table
 #+name: abs_loop_body_open_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -926,14 +926,14 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
   ft["blocks"] = 1;
   ft["table"] = 1;
   ft["tic_table"] = 1;
-#+end_src
+#+END_SRC
 ****** line not empty [+3]
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
 } else if (!line.empty) {
 /* line not empty */
 /* non blocks (headers, paragraphs) & closed blocks */
-#+end_src
+#+END_SRC
 ******* asserts
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -958,7 +958,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       || ft["book_index"] == 1
     );
   }
-#+end_src
+#+END_SRC
 ******* book index
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1001,13 +1001,13 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
     } else {
       book_idx_tmp ~= line;
     }
-#+end_src
+#+END_SRC
 ******* not book index [+2]
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
   } else {
   /* not book_index */
-#+end_src
+#+END_SRC
 ******** matched: comment
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1035,7 +1035,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       ft["heading"] = 0;
       ft["para"] = 0;
       counter++;
-#+end_src
+#+END_SRC
 ******** matched: header make
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1051,7 +1051,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       ft["para"] = 0;
       line_occur["header_make"]++;
       object["obj"] ~= line ~= "\n";
-#+end_src
+#+END_SRC
 ******** matched: header metadata
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1067,7 +1067,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       ft["para"] = 0;
       line_occur["header_metadata"]++;
       object["obj"] ~= line ~= "\n";
-#+end_src
+#+END_SRC
 ******** flag set: header make
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1082,7 +1082,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
         line_occur["header_make"]++;
         object["obj"] ~= line ~= "\n";
       }
-#+end_src
+#+END_SRC
 ******** flag set: header metadata
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1097,7 +1097,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
         line_occur["header_metadata"]++;
         object["obj"] ~= line ~= "\n";
       }
-#+end_src
+#+END_SRC
 ******** flag not set & line not exist: heading or para [+1]
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1106,7 +1106,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
     && ((ft["para"] == 0)
     && (ft["heading"] == 0))) {
     /* heading or para but neither flag nor line exists */
-#+end_src
+#+END_SRC
 ********* headings found
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1176,7 +1176,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
         }
         ft["make_headings"] = 1;
       }
-#+end_src
+#+END_SRC
 ********* headings make set
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1229,7 +1229,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
           }
         }
       }
-#+end_src
+#+END_SRC
 ********* headings match
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1356,7 +1356,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
         debug(heading) {                         // heading
           tell_l("yellow", strip(line));
         }
-#+end_src
+#+END_SRC
 ********* para matches
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1407,7 +1407,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
         }
         line_occur["para"]++;
       }
-#+end_src
+#+END_SRC
 ******** line exist: header make
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1419,7 +1419,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       }
       object["obj"] ~= line ~= "\n";
       line_occur["header_make"]++;
-#+end_src
+#+END_SRC
 ******** line exist: header metadata
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1431,7 +1431,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       }
       object["obj"] ~= line ~= "\n";
       line_occur["header_metadata"]++;
-#+end_src
+#+END_SRC
 ******** line exist: heading
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1442,7 +1442,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       }
       object["obj"] ~= line ~= "\n";
       line_occur["heading"]++;
-#+end_src
+#+END_SRC
 ******** line exist: para
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1455,7 +1455,7 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
       line_occur["para"]++;
     }
   }
-#+end_src
+#+END_SRC
 ****** line empty, with block flag
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
@@ -1670,13 +1670,13 @@ if (auto m = match(line, rgx.block_curly_code_open)) {
     ft["blocks"] = 0;
     ft["quote"] = 0;
   }
-#+end_src
+#+END_SRC
 ****** line empty [+1]
 #+name: abs_loop_body_not_block_obj
 #+BEGIN_SRC d                                                  :exports none
 } else {
 /* line empty */
-#+end_src
+#+END_SRC
 ******* assert line empty
 #+name: abs_loop_body_not_block_obj_line_empty
 #+BEGIN_SRC d                                                  :exports none
@@ -1689,7 +1689,7 @@ assert(
   (ft["blocks"] == 0),
   "code block status: none"
 );
-#+end_src
+#+END_SRC
 ******* header_make instructions
 #+name: abs_loop_body_not_block_obj_line_empty
 #+BEGIN_SRC d                                                  :exports none
@@ -1714,7 +1714,7 @@ if ((ft["header_make"] == 1)
   object.remove("attrib");
   object.remove("bookindex");
   processing.remove("verse");
-#+end_src
+#+END_SRC
 ******* header_metadata
 #+name: abs_loop_body_not_block_obj_line_empty
 #+BEGIN_SRC d                                                  :exports none
@@ -1741,7 +1741,7 @@ if ((ft["header_make"] == 1)
   object.remove("attrib");
   object.remove("bookindex");
   processing.remove("verse");
-#+end_src
+#+END_SRC
 ******* heading object
 #+name: abs_loop_body_not_block_obj_line_empty
 #+BEGIN_SRC d                                                  :exports none
@@ -1799,7 +1799,7 @@ if ((ft["header_make"] == 1)
   object.remove("bookindex");
   processing.remove("verse");
   counter++;
-#+end_src
+#+END_SRC
 ******* paragraph object
 #+name: abs_loop_body_not_block_obj_line_empty
 #+BEGIN_SRC d                                                  :exports none
@@ -1859,14 +1859,14 @@ if ((ft["header_make"] == 1)
   );
   // check what happens when paragraph separated by 2 newlines
 }
-#+end_src
+#+END_SRC
 *** close non code objects (regular text)
 #+name: abs_loop_body_00_closed
 #+BEGIN_SRC d                                                  :exports none
     } // close else for line empty
   } // close else for not the above
 } // close after non code, other blocks or regular text
-#+end_src
+#+END_SRC
 *** regular text objects
 #+name: abs_loop_body_01
 #+BEGIN_SRC d                                                  :exports none
@@ -1882,7 +1882,7 @@ if (((contents_arbitrary_max_length_set[counter-1]["is"] == "para")
     notesection.gather_notes_for_endnote_section(contents_arbitrary_max_length_set, counter-1);
   }
 }
-#+end_src
+#+END_SRC
 
 ** post loop processing
 #+name: abs_post
@@ -1983,12 +1983,12 @@ auto t =
     biblio_ordered
   );
 return t;
-#+end_src
+#+END_SRC
 
 * tangles
 ** code structure:                                :ao_abstract_doc_source.d:
 #+name: tangle_ao_abstract_doc_source
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_abstract_doc_source.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_abstract_doc_source.d :padline no :exports none :noweb yes
 /*
   document abstraction
   ao_abstract_doc_source.d
@@ -2013,4 +2013,4 @@ mixin template SiSUdocAbstraction() {
     }
   }
 }
-#+end_src
+#+END_SRC
diff --git a/org/ao_assertions.org b/org/ao_assertions.org
index c6b09bb..1c29be9 100644
--- a/org/ao_assertions.org
+++ b/org/ao_assertions.org
@@ -214,7 +214,7 @@ mixin template AssertionsOnMarkupDocumentStructure() {
     }
   }
 }
-#+end_src
+#+END_SRC
 ** mixin template: assertions on blocks
 #+name: ao_assertions
 #+BEGIN_SRC d                                                  :exports none
@@ -237,15 +237,15 @@ mixin template AssertionsOnBlocks() {
       "block status: none or closed");
   }
 }
-#+end_src
+#+END_SRC
 
 * tangle
 ** code structure:                                           :ao_assertions.d:
 #+name: tangle_ao_assertions
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_assertions.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_assertions.d :padline no :exports none :noweb yes
 /*
   assertions
   ao_assertions.d
 */
 <<ao_assertions>>
-#+end_src
+#+END_SRC
diff --git a/org/ao_defaults.org b/org/ao_defaults.org
index e16ed59..391abbb 100644
--- a/org/ao_defaults.org
+++ b/org/ao_defaults.org
@@ -179,7 +179,7 @@ template SiSUheader() {
   auto config_jsonstr = `{
   }`;
 }
-#+end_src
+#+END_SRC
 ** template: flags regex initialize
 #+name: ao_defaults_templates
 #+BEGIN_SRC d                                                  :exports none
@@ -217,7 +217,7 @@ template SiSUrgxInitFlags() {
     "book_index"           : 0,
   ];
 }
-#+end_src
+#+END_SRC
 ** template: bibliography
 #+name: ao_defaults_templates
 #+BEGIN_SRC d                                                  :exports none
@@ -268,7 +268,7 @@ template SiSUbiblio() {
     "sn"                               : "short_name"
   ]; // is: book, article, magazine, newspaper, blog, other
 }
-#+end_src
+#+END_SRC
 ** template: internal markup
 #+name: ao_defaults_templates
 #+BEGIN_SRC d                                                  :exports none
@@ -278,15 +278,15 @@ template InternalMarkup() {
     auto en_b_o = "〖"; auto en_b_c = "〗";
   }
 }
-#+end_src
+#+END_SRC
 
 * tangles
 ** code structure:                                               :ao_defaults.d:
 #+name: tangle_ao_defaults
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_defaults.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_defaults.d :padline no :exports none :noweb yes
 /*
   defaults
   ao_defaults.d
 */
 <<ao_defaults_templates>>
-#+end_src
+#+END_SRC
diff --git a/org/ao_emitters_and_interfaces.org b/org/ao_emitters_and_interfaces.org
index 8729a74..d016f7c 100644
--- a/org/ao_emitters_and_interfaces.org
+++ b/org/ao_emitters_and_interfaces.org
@@ -34,7 +34,7 @@ class CLI {
     return actions;
   }
 }
-#+end_src
+#+END_SRC
 ** e&i: ocn
 *** emitter
 #+name: ao_emitter
@@ -54,7 +54,7 @@ class OCNemitter : AssertOCN {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 *** interface assert
 #+name: ao_interface
 #+BEGIN_SRC d                                                  :exports none
@@ -63,7 +63,7 @@ interface AssertOCN {
     in { assert(ocn_status_flag <= 2); }
     out(ocn) { assert(ocn >= 0); }
 }
-#+end_src
+#+END_SRC
 ** e:   object attributes
 *** emitter
 #+name: ao_emitter
@@ -220,7 +220,7 @@ class ObjAttributes {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 ** e:   object inline markup munge
 *** emitter
 #+name: ao_emitter
@@ -404,7 +404,7 @@ class ObjInlineMarkupMunge {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 ** e&i: object inline markup
 *** emitter
 #+name: ao_emitter
@@ -464,7 +464,7 @@ class ObjInlineMarkup : AssertObjInlineMarkup {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 *** interface assert
 #+name: ao_interface
 #+BEGIN_SRC d                                                  :exports none
@@ -475,7 +475,7 @@ interface AssertObjInlineMarkup {
     out(inline_markup) {
     }
 }
-#+end_src
+#+END_SRC
 ** e&i: object attrib
 *** emitter
 #+name: ao_emitter
@@ -566,7 +566,7 @@ class ObjAttrib : AssertObjAttrib {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 *** interface assert
 #+name: ao_interface
 #+BEGIN_SRC d                                                  :exports none
@@ -577,7 +577,7 @@ interface AssertObjAttrib {
     out(obj_attrib_json) {
     }
 }
-#+end_src
+#+END_SRC
 ** e:   header document metadata in json
 *** emitter
 #+name: ao_emitter
@@ -772,7 +772,7 @@ class HeaderDocMetadataMakeJson {
     return t;
   }
 }
-#+end_src
+#+END_SRC
 ** e:   header document metadata as hash
 *** emitter
 #+name: ao_emitter
@@ -825,7 +825,7 @@ class HeaderMetadataMakeHash {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 ** e&i: book index nugget hash
 *** emitter
 #+name: ao_emitter
@@ -891,7 +891,7 @@ class BookIndexNuggetHash : AssertBookIndexNuggetHash {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 *** interface assert
 #+name: ao_interface
 #+BEGIN_SRC d                                                  :exports none
@@ -911,7 +911,7 @@ interface AssertBookIndexNuggetHash {
     out(hash_nugget) {
     }
 }
-#+end_src
+#+END_SRC
 ** e&i: book index report
 *** emitter
 #+name: ao_emitter
@@ -940,7 +940,7 @@ class BookIndexReport {
     }
   }
 }
-#+end_src
+#+END_SRC
 *** interface assert
 #+name: ao_interface
 #+BEGIN_SRC d                                                  :exports none
@@ -949,7 +949,7 @@ interface AssertBookIndexReport {
     in {
     }
 }
-#+end_src
+#+END_SRC
 ** e:   book index report indented
 *** emitter
 #+name: ao_emitter
@@ -980,7 +980,7 @@ class BookIndexReportIndent {
     }
   }
 }
-#+end_src
+#+END_SRC
 ** e:   book index report section
 *** emitter
 #+name: ao_emitter
@@ -1146,7 +1146,7 @@ class BookIndexReportSection {
     return bookindex;
   }
 }
-#+end_src
+#+END_SRC
 ** e:   (end)notes section
 *** emitter
 #+name: ao_emitter
@@ -1271,7 +1271,7 @@ class NotesSection {
     return t;
   }
 }
-#+end_src
+#+END_SRC
 ** e:   bibliography
 *** emitter
 #+name: ao_emitter
@@ -1343,7 +1343,7 @@ class Bibliography {
     }
   }
 }
-#+end_src
+#+END_SRC
 ** e&i: node structure metadata
 *** emitter
 #+name: ao_emitter
@@ -1470,7 +1470,7 @@ class NodeStructureMetadata : AssertNodeJSON {
   invariant() {
   }
 }
-#+end_src
+#+END_SRC
 
 *** interface assert
 #+name: ao_interface
@@ -1573,11 +1573,11 @@ interface AssertNodeJSON {
     }
   }
 }
-#+end_src
+#+END_SRC
 * tangles
 ** code structure:                                                :ao_emitter.d:
 #+name: tangle_ao_emitter
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_emitter.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_emitter.d :padline no :exports none :noweb yes
 /*
   emitters
   ao_emitters.d
@@ -1586,10 +1586,10 @@ mixin template Emitters() {
   mixin InternalMarkup;
   <<ao_emitter>>
 }
-#+end_src
+#+END_SRC
 ** code structure:                                             :ao_interface.d:
 #+name: tangle_ao_interface
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_interface.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_interface.d :padline no :exports none :noweb yes
 /*
   interface
   ao_interface.d
@@ -1597,4 +1597,4 @@ mixin template Emitters() {
 mixin template Interfaces() {
   <<ao_interface>>
 }
-#+end_src
+#+END_SRC
diff --git a/org/ao_markup_source_raw.org b/org/ao_markup_source_raw.org
index ec94448..13bce8d 100644
--- a/org/ao_markup_source_raw.org
+++ b/org/ao_markup_source_raw.org
@@ -39,7 +39,7 @@ final private string markupSourceString(in char[] fn_src) {
   std.utf.validate(source_txt_str);
   return source_txt_str;
 }
-#+end_src
+#+END_SRC
 ** source line array
 #+name: ao_markup_source_raw
 #+BEGIN_SRC d                                                  :exports none
@@ -48,7 +48,7 @@ final private char[][] markupSourceLineArray(in string src_text) {
     split(cast(char[]) src_text, rgx.line_delimiter);
   return source_line_arr;
 }
-#+end_src
+#+END_SRC
 ** insert source content raw line array
 #+name: ao_markup_source_raw
 #+BEGIN_SRC d                                                  :exports none
@@ -61,7 +61,7 @@ final char[][] markupInsertSourceContentRawLineArray(in char[] fn_src) {
   auto source_line_arr = markupSourceLineArray(source_txt_str);
   return source_line_arr;
 }
-#+end_src
+#+END_SRC
 ** source content raw line array
 #+name: ao_markup_source_raw
 #+BEGIN_SRC d                                                  :exports none
@@ -74,12 +74,12 @@ final char[][] markupSourceContentRawLineArray(in char[] fn_src) {
   auto source_line_arr = markupSourceLineArray(source_txt_str);
   return source_line_arr;
 }
-#+end_src
+#+END_SRC
 
 * tangles
 ** code structure:                                   :ao_markup_source_raw.d:
 #+name: tangle_ao_markup_source_raw
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_markup_source_raw.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_markup_source_raw.d :padline no :exports none :noweb yes
 /*
   markup source raw
   ao_markup_source_raw.d
@@ -90,4 +90,4 @@ mixin template SiSUmarkupRaw() {
     <<ao_markup_source_raw>>
   }
 }
-#+end_src
+#+END_SRC
diff --git a/org/ao_object_setter.org b/org/ao_object_setter.org
index b6d2680..83425a3 100644
--- a/org/ao_object_setter.org
+++ b/org/ao_object_setter.org
@@ -24,7 +24,7 @@ string[string] contents_comment(in string object) {
   object_set["obj"]           = object;
   return object_set;
 }
-#+end_src
+#+END_SRC
 ** heading
 #+name: ao_object_setter
 #+BEGIN_SRC d                                                  :exports none
@@ -50,7 +50,7 @@ string[string] contents_heading(
   object_set["attrib"]        = attrib;
   return object_set;
 }
-#+end_src
+#+END_SRC
 ** para
 #+name: ao_object_setter
 #+BEGIN_SRC d                                                  :exports none
@@ -75,7 +75,7 @@ string[string] contents_para(
   object_set["attrib"]        = attrib;
   return object_set;
 }
-#+end_src
+#+END_SRC
 ** block
 #+name: ao_object_setter
 #+BEGIN_SRC d                                                  :exports none
@@ -94,7 +94,7 @@ string[string] contents_block(
   object_set["attrib"]        = attrib;
   return object_set;
 }
-#+end_src
+#+END_SRC
 ** block ocn string
 #+name: ao_object_setter
 #+BEGIN_SRC d                                                  :exports none
@@ -113,12 +113,12 @@ string[string] contents_block_ocn_string(
   object_set["node"]          = node;
   return object_set;
 }
-#+end_src
+#+END_SRC
 
 * tangles
 ** code structure:                                          :ao_object_setter.d:
 #+name: tangle_ao_object_setter
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_object_setter.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_object_setter.d :padline no :exports none :noweb yes
 /*
   object setter
   ao_object_setter.d
@@ -129,4 +129,4 @@ mixin template ObjectSetters() {
     <<ao_object_setter>>
   }
 }
-#+end_src
+#+END_SRC
diff --git a/org/ao_output_debugs.org b/org/ao_output_debugs.org
index f63fcad..0e730ef 100644
--- a/org/ao_output_debugs.org
+++ b/org/ao_output_debugs.org
@@ -32,7 +32,7 @@ debug(parent) {
     }
   }
 }
-#+end_src
+#+END_SRC
 ** (objects)
 #+name: ao_output_debugs
 #+BEGIN_SRC d                                                  :exports none
@@ -51,7 +51,7 @@ debug(objects) {
     }
   }
 }
-#+end_src
+#+END_SRC
 ** (headermakejson)
 #+name: ao_output_debugs
 #+BEGIN_SRC d                                                  :exports none
@@ -77,7 +77,7 @@ debug(headermakejson) {
     }
   }
 }
-#+end_src
+#+END_SRC
 ** (headermetadatajson)
 #+name: ao_output_debugs
 #+BEGIN_SRC d                                                  :exports none
@@ -182,7 +182,7 @@ debug(headermetadatajson) {
     }
   }
 }
-#+end_src
+#+END_SRC
 ** (bookindex)
 #+name: ao_output_debugs
 #+BEGIN_SRC d                                                  :exports none
@@ -192,7 +192,7 @@ debug(bookindex) {
   auto bookindex = new BookIndexReport();
   bookindex.bookindex_report_sorted(bookindex_unordered_hashes);
 }
-#+end_src
+#+END_SRC
 ** (summary) [+1]
 #+name: ao_output_debugs
 #+BEGIN_SRC d                                                  :exports none
@@ -200,7 +200,7 @@ debug(summary) {
   string[string] check = [
     "last_ocn" : "NA [debug \"checkdoc\" not run]",
   ];
-#+end_src
+#+END_SRC
 *** (checkdoc)
 #+name: ao_output_debugs_summary
 #+BEGIN_SRC d                                                  :exports none
@@ -213,7 +213,7 @@ debug(checkdoc) {
     }
   }
 }
-#+end_src
+#+END_SRC
 *** (headings)
 #+name: ao_output_debugs_summary
 #+BEGIN_SRC d                                                  :exports none
@@ -241,7 +241,7 @@ writeln(
   "\nlength bookindex: ", bookindex_unordered_hashes.length,
   "\n", __FILE__, ":", __LINE__,
 );
-#+end_src
+#+END_SRC
 *** compare number of ocn for known sisu markup output (checkdoc)
 #+name: ao_output_debugs_summary
 #+BEGIN_SRC d                                                  :exports none
@@ -370,12 +370,12 @@ debug(checkdoc) {
     }
   }
 }
-#+end_src
+#+END_SRC
 
 * tangles
 ** code structure:                                          :ao_output_debugs.d:
 #+name: tangle_ao_output_debugs
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_output_debugs.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_output_debugs.d :padline no :exports none :noweb yes
 /*
   output debugs
   ao_output_debugs.d
@@ -400,4 +400,4 @@ template SiSUoutputDebugs() {
     }
   }
 }
-#+end_src
+#+END_SRC
diff --git a/org/ao_rgx.org b/org/ao_rgx.org
index f168e7a..ff7f207 100644
--- a/org/ao_rgx.org
+++ b/org/ao_rgx.org
@@ -37,13 +37,14 @@ static para_delimiter            = ctRegex!("\n[ ]*\n+");
 static levels_markup             = ctRegex!(`^[A-D1-4]$`);
 static levels_numbered           = ctRegex!(`^[0-9]$`);
 static levels_numbered_headings  = ctRegex!(`^[0-7]$`);
-#+end_src
+#+END_SRC
 ** markup insert file
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
 /* insert markup file */
 static insert_src_fn_ssi_or_sst  = ctRegex!(`^<<\s*(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[ti])$`);
-#+end_src
+// static insert_ssi_or_sst_fn      = ctRegex!(`^<<\s*[a-zA-Z0-9._-]+[.]ss[ti]`);
+#+END_SRC
 ** header & comments
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -55,7 +56,7 @@ static header_metadata           = ctRegex!(`^@([a-z_]+):(?:\s|$)`);
 static header_sub                = ctRegex!(`^[ ]+:([a-z_]+):\s`);
 static head_main                 = ctRegex!(`^@([a-z_]+):\s*(.*)`, "m");
 static head_sub                  = ctRegex!(`^[ ]*:([a-z_]+):\s+(.+)`, "m");
-#+end_src
+#+END_SRC
 ** header & paragraph operators
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -71,7 +72,7 @@ static para_bullet_indent = ctRegex!(`^_([1-9])[*] `);
 static para_indent        = ctRegex!(`^_([1-9]) `);
 static para_indent_hang   = ctRegex!(`^_([0-9])_([0-9]) `);
 static para_attribs       = ctRegex!(`^_(([0-9])(_([0-9]))?|_([1-9])?[*]) `);
-#+end_src
+#+END_SRC
 ** blocked markup tics
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -83,7 +84,7 @@ static block_tic_block_open      = ctRegex!("^`{3} (block)");
 static block_tic_quote_open      = ctRegex!("^`{3} (quote)");
 static block_tic_table_open      = ctRegex!("^`{3} (table)");
 static block_tic_close           = ctRegex!("^(`{3})$","m");
-#+end_src
+#+END_SRC
 ** blocked markup curly
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -100,7 +101,7 @@ static block_curly_quote_open    = ctRegex!(`^(quote[{].*?$)`);
 static block_curly_quote_close   = ctRegex!(`^([}]quote)`);
 static block_curly_table_open    = ctRegex!(`^(table[{].*?$)`);
 static block_curly_table_close   = ctRegex!(`^([}]table)`);
-#+end_src
+#+END_SRC
 ** inline markup font face mod
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -113,7 +114,7 @@ static inline_subscript          = ctRegex!(`,\{(?P<text>.+?)\},`);
 static inline_strike             = ctRegex!(`-\{(?P<text>.+?)\}-`);
 static inline_insert             = ctRegex!(`\+\{(?P<text>.+?)\}\+`);
 static inline_mono               = ctRegex!(`#\{(?P<text>.+?)\}#`);
-#+end_src
+#+END_SRC
 ** inline markup footnotes
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -144,7 +145,7 @@ static inline_notes_square                   = ctRegex!(`~\[\s*(.+?)\]~`, "mg");
 static inline_text_and_note_square_sp        = ctRegex!(`(.+?)~\[[*+]+\s+(.+?)\]~`, "mg");
 static inline_text_and_note_square           = ctRegex!(`(.+?)~\[\s*(.+?)\]~`, "mg");
 static inline_note_square_delimiters         = ctRegex!(`(~\[\s*)(.+?)(\]~)`, "mg");
-#+end_src
+#+END_SRC
 ** inline markup book index
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -152,7 +153,7 @@ static inline_note_square_delimiters         = ctRegex!(`(~\[\s*)(.+?)(\]~)`, "m
 static book_index                = ctRegex!(`^=\{\s*(.+?)\}$`, "m");
 static book_index_open           = ctRegex!(`^=\{\s*([^}]+?)$`);
 static book_index_close          = ctRegex!(`^(.*?)\}$`, "m"); // strip
-#+end_src
+#+END_SRC
 ** no ocn object
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -160,7 +161,7 @@ static book_index_close          = ctRegex!(`^(.*?)\}$`, "m"); // strip
 static ocn_off                   = ctRegex!(`~#$`, "m");
 static ocn_off_dh                = ctRegex!(`-#$`, "m");
 static ocn_off_all               = ctRegex!(`[~-]#$`, "m");
-#+end_src
+#+END_SRC
 ** no ocn block
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -170,13 +171,13 @@ static ocn_off_block_dh          = ctRegex!(`^---#$`);
 static ocn_off_block_close       = ctRegex!(`^--\+#$`);
 // static auto_ocn_ignore           = ctRegex!(`^[+~*$-]{3,}$`); // reminder
 static ocn_block_marks           = ctRegex!(`^--[+~-]#$`);
-#+end_src
+#+END_SRC
 ** ignore outside code blocks
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
 /* ignore outside code blocks */
 static regular_parse_skip        = ctRegex!(`^(--[+~-]#|-[\\]{2}-|=[.\\]{2}=)$`); // not structural info
-#+end_src
+#+END_SRC
 ** line & page breaks
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -189,13 +190,13 @@ static break_page_line_across    = ctRegex!(`^=[.]{2}=$`);
 static break_string              = ctRegex!(`』`);
 // ancestry, parent
 static parent                    = ctRegex!(`([0-7]):([0-9]+)`);
-#+end_src
+#+END_SRC
 ** json
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
 /* json */
 static tailing_comma             = ctRegex!(`,$`, "m");
-#+end_src
+#+END_SRC
 ** head
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -211,14 +212,14 @@ static subhead_identifier        = ctRegex!(`^(?:oclc|pg|isbn)$`, "m");
 static subhead_notes             = ctRegex!(`^(?:abstract|description)$`, "m");
 static subhead_publisher         = ctRegex!(`^(?:name)$`, "m");
 static subhead_make              = ctRegex!(`^(?:cover_image|home_button_image|home_button_text|footer|headings|num_top|breaks|substitute|bold|italics|emphasis|texpdf_font|css)$`, "m");
-#+end_src
+#+END_SRC
 ** biblio tags
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
 /* biblio tags */
 static biblio_tags               = ctRegex!(`^(is|au|author_raw|author|author_arr|editor_raw|ed|editor_arr|ti|title|subtitle|fulltitle|lng|language|trans|src|jo|journal|in|vol|volume|edn|edition|yr|year|pl|place|pb|pub|publisher|url|pg|pages|note|short_name|id):\s+(.+)`);
 static biblio_abbreviations      = ctRegex!(`^(au|ed|ti|lng|jo|vol|edn|yr|pl|pb|pub|pg|pgs|sn)$`);
-#+end_src
+#+END_SRC
 ** bookindex split
 #+name: ao_rgx
 #+BEGIN_SRC d                                                  :exports none
@@ -227,11 +228,11 @@ static bi_main_terms_split       = ctRegex!(`\s*;\s*`);
 static bi_main_term_plus_rest_split = ctRegex!(`\s*:\s*`);
 static bi_sub_terms_plus_ocn_offset_split = ctRegex!(`\s*\|\s*`);
 static bi_term_and_ocns_match    = ctRegex!(`^(.+?)\+(\d+)`);
-#+end_src
+#+END_SRC
 * tangles
 ** code structure:                                                   :ao_rgx.d:
 #+name: tangle_ao_rgx
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_rgx.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_rgx.d :padline no :exports none :noweb yes
 /*
   regex
   ao_rgx.d
@@ -241,4 +242,4 @@ mixin template RgxInit() {
     <<ao_rgx>>
   }
 }
-#+end_src
+#+END_SRC
diff --git a/org/ao_scan_inserts.org b/org/ao_scan_inserts.org
index 167553a..8aaf377 100644
--- a/org/ao_scan_inserts.org
+++ b/org/ao_scan_inserts.org
@@ -33,7 +33,7 @@ int tell_l(string color, in char[] line) {
 }
 auto fn_pth_full = match(fn_src, rgx.src_pth);
 auto markup_src_file_path = fn_pth_full.captures[1];
-#+end_src
+#+END_SRC
 *** loop insert (sub-document)
 #+name: ao_inserts_scan_loop
 #+BEGIN_SRC d                                                  :exports none
@@ -116,14 +116,14 @@ if (ft1["curly_code"] == 1) {
   cont_arbitrary_max_length_set_[counter["add"]] = line;
   ++counter["add"]; ++add;
 }
-#+end_src
+#+END_SRC
 *** post loop
 #+name: ao_inserts_scan_post
 #+BEGIN_SRC d                                                  :exports none
 auto contents_ = cont_arbitrary_max_length_set_[0 .. counter["add"]].dup;
 auto t = tuple(contents_, add);
 return t;
-#+end_src
+#+END_SRC
 ** scan document source
 *** scan doc source
 #+name: ao_doc_scan
@@ -143,7 +143,7 @@ int tell_l(string color, in char[] line) {
 }
 auto fn_pth_full = match(fn_src, rgx.src_pth);
 auto markup_src_file_path = fn_pth_full.captures[1];
-#+end_src
+#+END_SRC
 *** loop insert (document)
 #+name: ao_doc_scan_loop
 #+BEGIN_SRC d                                                  :exports none
@@ -238,7 +238,7 @@ if (ft["curly_code"] == 1) {
   cont_arbitrary_max_length_set[add] = line;
   ++add;
 }
-#+end_src
+#+END_SRC
 *** post loop
 #+name: ao_doc_scan_post
 #+BEGIN_SRC d                                                  :exports none
@@ -249,12 +249,12 @@ debug(insert) {                              // insert file
   writeln(add);
 }
 return contents;
-#+end_src
+#+END_SRC
 
 * tangles
 ** code structure:                                                 :ao_inserts.d:
 #+name: tangle_ao_inserts
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_scan_inserts.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_scan_inserts.d :padline no :exports none :noweb yes
 /*
   inserts
   ao_inserts.d
@@ -279,4 +279,4 @@ mixin template SiSUdocInserts() {
     }
   }
 }
-#+end_src
+#+END_SRC
diff --git a/org/ao_utils.org b/org/ao_utils.org
index 8e6801f..2c3e342 100644
--- a/org/ao_utils.org
+++ b/org/ao_utils.org
@@ -83,12 +83,12 @@ string[string] scr_txt_marker = [
   "navy"          : "\033[34m*\033[0m ",
   "black"         : "\033[30m*\033[0m "
 ];
-#+end_src
+#+END_SRC
 
 * tangles
 ** code structure:                                                   :ao_util.d:
 #+name: tangle_ao_utils
-#+BEGIN_SRC d  :tangle ../lib/sdp/ao_utils.d  :exports none :noweb yes
+#+BEGIN_SRC d :tangle ../lib/sdp/ao_utils.d :padline no :exports none :noweb yes
 /*
   utils
   ao_util.d
@@ -96,4 +96,4 @@ string[string] scr_txt_marker = [
 mixin template ScreenTxtColors() {
   <<ao_utils>>
 }
-#+end_src
+#+END_SRC
diff --git a/org/sdp.org b/org/sdp.org
index da8dc43..70b68f5 100644
--- a/org/sdp.org
+++ b/org/sdp.org
@@ -48,7 +48,7 @@ import
   lib.sdp.ao_utils;                // sdp/ao_utils.d               ao_utils.org
   // std.conv;
 import std.conv : to;
-#+end_src
+#+END_SRC
 ** argv [+3]
 *** argv mixins
 #+name: sdp_argv
@@ -101,7 +101,7 @@ scope(failure) {
   }
   // writeln("1");
 }
-#+end_src
+#+END_SRC
 *** argv loop
 #+name: sdp_argv
 #+BEGIN_SRC d                                                  :exports none
@@ -114,7 +114,7 @@ foreach(cmdlnins; argv) {
     file_count++;
   }
 }
-#+end_src
+#+END_SRC
 *** each file [+2]
 **** filename provided [+1]
 ***** scope
@@ -146,7 +146,7 @@ enforce(
   match(fn_src, rgx.src_pth),
   "not a sisu markup filename"
 );
-#+end_src
+#+END_SRC
 ***** send for processing
 #+name: sdp_each_file_do
 #+BEGIN_SRC d                                                  :exports none
@@ -190,7 +190,7 @@ auto make_json = t[2];
 auto bookindex_unordered_hashes = t[3];
 auto biblio = t[4];
 // destroy(t);
-#+end_src
+#+END_SRC
 ***** debug document parts (checkdoc)
 #+name: sdp_each_file_do
 #+BEGIN_SRC d                                                  :exports none
@@ -208,7 +208,7 @@ debug(checkdoc) {
 }
 // compose abstract document markup state
 // append book index
-#+end_src
+#+END_SRC
 ***** on exit
 #+name: sdp_each_file_do
 #+BEGIN_SRC d                                                  :exports none
@@ -222,7 +222,7 @@ scope(exit) {
   destroy(fn_src);
   destroy(biblio);
 }
-#+end_src
+#+END_SRC
 **** no filename provided
 #+name: sdp_no_filename_provided
 #+BEGIN_SRC d                                                  :exports none
@@ -230,12 +230,11 @@ scope(exit) {
 writeln("no recognized filename");
 break;
 // terminate, stop
-#+end_src
+#+END_SRC
 * tangles                                                            :tangle:
 ** code structure                                                    :sdp.d:
 #+name: tangle_sdp
-#+BEGIN_SRC d  :tangle ../lib/sdp.d  :exports none :noweb yes
-#!/usr/bin/env rdmd
+#+begin_src d  :tangle ../lib/sdp.d :shebang #!/usr/bin/env rdmd  :exports none :noweb yes
 /*
   sdp
   sdp.d