0.18.0 rename meta from ao (considered adr)

1 files changed, 0 insertions, 5546 deletions

diff --git a/src/sdp/ao/abstract_doc_source.d b/src/sdp/ao/abstract_doc_source.d
deleted file mode 100644
index f935df3..0000000
--- a/src/sdp/ao/abstract_doc_source.d
+++ /dev/null
@@ -1,5546 +0,0 @@
-/++
-  document abstraction:
-  abstraction of sisu markup for downstream processing
-  ao_abstract_doc_source.d
-+/
-module sdp.ao.abstract_doc_source;
-template SiSUdocAbstraction() {
-  /+ ↓ abstraction imports +/
-  import sdp.ao;
-  import
-    std.algorithm,
-    std.container,
-    std.file,
-    std.json,
-    std.path;
-  import
-    sdp.ao.defaults,
-    sdp.ao.object_setter,
-    sdp.ao.rgx;
-  /+ ↓ abstraction mixins +/
-  mixin ObjectSetter;
-  mixin InternalMarkup;
-  mixin SiSUrgxInit;
-  /+ ↓ abstraction struct init +/
-  /+ initialize +/
-  ObjGenericComposite[][string] the_table_of_contents_section;
-  ObjGenericComposite[] the_document_head_section, the_document_body_section, the_bibliography_section, the_glossary_section, the_blurb_section;
-  ObjGenericComposite[] the_dom_tail_section;
-  string[string] an_object, processing;
-  string an_object_key;
-  string[] anchor_tags;
-  string anchor_tag_;
-  string segment_anchor_tag_that_object_belongs_to;
-  string segment_anchor_tag_that_object_belongs_to_uri;
-  /+ enum +/
-  enum State { off, on }
-  enum TriState { off, on, closing }
-  enum DocStructMarkupHeading {
-    h_sect_A,
-    h_sect_B,
-    h_sect_C,
-    h_sect_D,
-    h_text_1,
-    h_text_2,
-    h_text_3,
-    h_text_4,
-    h_text_5, // extra level, drop
-    content_non_header
-  } // header section A-D; header text 1-4
-  /+ biblio variables +/
-  string biblio_tag_name, biblio_tag_entry, st;
-  string[] biblio_arr_json;
-  string biblio_entry_str_json;
-  JSONValue[] bib_arr_json;
-  int bib_entry;
-  /+ counters +/
-  int cntr, previous_count, previous_length;
-  bool reset_note_numbers=true;
-  int[string] line_occur;
-  int html_segnames_ptr=0;
-  int html_segnames_ptr_cntr=0;
-  int verse_line, heading_ptr;
-  /+ paragraph attributes +/
-  int[string] indent;
-  bool bullet = true;
-  string content_non_header = "8";
-  auto obj_im = ObjInlineMarkup();
-  auto obj_att = ObjAttributes();
-  /+ ocn +/
-  int obj_cite_number, obj_cite_number_;
-  auto object_citation_number = OCNemitter();
-  int[] dom_markedup = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-  int[] dom_markedup_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-  int[] dom_collapsed = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-  int[] dom_collapsed_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-  enum DomTags { none, open, close, close_and_open, open_still, }
-  void heading_ancestors(O)(
-    auto return ref O          obj,
-    return ref string[]        lv_ancestors,
-  ) {
-    switch (obj.heading_lev_markup) {
-    case 0:
-      lv_ancestors[0] = obj.text.to!string;
-      foreach(k; 1..8) {
-        lv_ancestors[k] = "";
-      }
-      goto default;
-    case 1:
-      lv_ancestors[1] = obj.text.to!string;
-      foreach(k; 2..8) {
-        lv_ancestors[k] = "";
-      }
-      goto default;
-    case 2:
-      lv_ancestors[2] = obj.text.to!string;
-      foreach(k; 3..8) {
-        lv_ancestors[k] = "";
-      }
-      goto default;
-    case 3:
-      lv_ancestors[3] = obj.text.to!string;
-      foreach(k; 4..8) {
-        lv_ancestors[k] = "";
-      }
-      goto default;
-    case 4:
-      lv_ancestors[4] = obj.text.to!string;
-      foreach(k; 5..8) {
-        lv_ancestors[k] = "";
-      }
-      goto default;
-    case 5:
-      lv_ancestors[5] = obj.text.to!string;
-      foreach(k; 6..8) {
-        lv_ancestors[k] = "";
-      }
-      goto default;
-    case 6:
-      lv_ancestors[6] = obj.text.to!string;
-      lv_ancestors[7] = "";
-      goto default;
-    case 7:
-      lv_ancestors[7] = obj.text.to!string;
-      goto default;
-    default:
-      obj.heading_ancestors_text = lv_ancestors.dup;
-    }
-  }
-  auto dom_set_markup_tags(int[] dom, int lev) {
-    foreach (i; 0 .. 8) {
-      if (i < lev) {
-        if (dom[i] == DomTags.open
-           || dom[i] == DomTags.close_and_open
-        ) {
-          dom[i] = DomTags.open_still;
-        } else if (dom[i] == DomTags.close) {
-          dom[i] = DomTags.none;
-        }
-      } else if (i == lev) {
-        if (lev  == 0
-          && dom[i] == DomTags.open_still
-        ) {
-          dom[i] = DomTags.close;
-        } else if (dom[i] == DomTags.open
-          || dom[i] == DomTags.open_still
-          || dom[i] == DomTags.close_and_open
-        ) {
-          dom[i] = DomTags.close_and_open;
-        } else {
-          dom[i] = DomTags.open;
-        }
-      } else if (i > lev) {
-        if (dom[i] == DomTags.close) {
-          dom[i] = DomTags.none;
-        } else if (dom[i] == DomTags.open
-          || dom[i] == DomTags.open_still
-          || dom[i] == DomTags.close_and_open
-        ) {
-          dom[i] = DomTags.close;
-        }
-      }
-    }
-    debug(dom_magic_numbers) {
-      writeln("marked up: ", lev, ": ", dom);
-    }
-    return dom;
-  }
-  auto dom_set_collapsed_tags(int[] dom, int lev) {
-    foreach (i; 0 .. 8) {
-      if (i < lev) {
-        if (dom[i] == DomTags.open
-           || dom[i] == DomTags.close_and_open
-        ) {
-          dom[i] = DomTags.open_still;
-        } else if (dom[i] == DomTags.close) {
-          dom[i] = DomTags.none;
-        }
-      } else if (i == lev) {
-        if (lev  == 0
-          && dom[i] == DomTags.open_still
-        ) {
-          dom[i] = DomTags.close;
-        } else if (dom[i] == DomTags.open
-          || dom[i] == DomTags.open_still
-          || dom[i] == DomTags.close_and_open
-        ) {
-          dom[i] = DomTags.close_and_open;
-        } else {
-          dom[i] = DomTags.open;
-        }
-      } else if (i > lev) {
-        if (dom[i] == DomTags.close) {
-          dom[i] = DomTags.none;
-        } else if (dom[i] == DomTags.open
-          || dom[i] == DomTags.open_still
-          || dom[i] == DomTags.close_and_open
-        ) {
-          dom[i] = DomTags.close;
-        }
-      }
-    }
-    debug(dom_magic_numbers) {
-      writeln("collapsed: ", lev, ": ", dom);
-    }
-    return dom;
-  }
-  int ocn_emit(int ocn_status_flag) {
-    return object_citation_number.ocn_emitter(ocn_status_flag);
-  }
-  /+ book index variables +/
-  string book_idx_tmp;
-  string[][string][string] bookindex_unordered_hashes;
-  /+ node +/
-  ObjGenericComposite comp_obj_heading, comp_obj_location, comp_obj_block, comp_obj_code, comp_obj_poem_ocn, comp_obj_comment;
-  auto node_construct = NodeStructureMetadata();
-  enum sObj { content, anchor_tags, notes_reg, notes_star, links }
-  /+ ↓ abstract marked up document +/
-  auto SiSUdocAbstraction(Src,Make,Meta,Opt)(
-    Src                  markup_sourcefile_content,
-    Make                 dochead_make_aa,
-    Meta                 dochead_meta_aa,
-    Opt                  opt_action,
-  ) {
-    auto rgx = Rgx();
-    debug(asserts) {
-      static assert(is(typeof(markup_sourcefile_content) == char[][]));
-      static assert(is(typeof(dochead_make_aa)           == string[string][string]));
-      static assert(is(typeof(dochead_meta_aa)           == string[string][string]));
-      static assert(is(typeof(opt_action)                == bool[string]));
-    }
-    /+ ↓ abstraction init +/
-    scope(success) {
-    }
-    scope(failure) {
-    }
-    scope(exit) {
-      destroy(the_document_head_section);
-      destroy(the_table_of_contents_section);
-      destroy(the_document_body_section);
-      destroy(the_bibliography_section);
-      destroy(an_object);
-      destroy(processing);
-      destroy(biblio_arr_json);
-      previous_length=0;
-      reset_note_numbers=true;
-    }
-    mixin SiSUrgxInitFlags;
-    mixin SiSUnode;
-    auto node_para_int_    = node_metadata_para_int;
-    auto node_para_str_    = node_metadata_para_str;
-    ObjGenericComposite comp_obj_heading_, comp_obj_para, comp_obj_toc;
-    line_occur = [
-      "heading"  : 0,
-      "para"     : 0,
-      "glossary" : 0,
-      "blurb"    : 0,
-    ];
-    auto type = flags_type_init;
-    string[string] obj_cite_number_poem = [
-      "start" : "",
-      "end"   : ""
-    ];
-    string[] lv_ancestors = [ "", "", "", "", "", "", "", "", ];
-    int[string] lv = [
-      "lv" : State.off,
-      "h0" : State.off,
-      "h1" : State.off,
-      "h2" : State.off,
-      "h3" : State.off,
-      "h4" : State.off,
-      "h5" : State.off,
-      "h6" : State.off,
-      "h7" : State.off,
-      "lev_int_collapsed" : 0,
-    ];
-    int[string] collapsed_lev = [
-      "h0" : State.off,
-      "h1" : State.off,
-      "h2" : State.off,
-      "h3" : State.off,
-      "h4" : State.off,
-      "h5" : State.off,
-      "h6" : State.off,
-      "h7" : State.off
-    ];
-    string[string] heading_match_str = [
-      "h_A": "^(none)",
-      "h_B": "^(none)",
-      "h_C": "^(none)",
-      "h_D": "^(none)",
-      "h_1": "^(none)",
-      "h_2": "^(none)",
-      "h_3": "^(none)",
-      "h_4": "^(none)"
-    ];
-    auto heading_match_rgx = [
-      "h_A": regex(r"^(none)"),
-      "h_B": regex(r"^(none)"),
-      "h_C": regex(r"^(none)"),
-      "h_D": regex(r"^(none)"),
-      "h_1": regex(r"^(none)"),
-      "h_2": regex(r"^(none)"),
-      "h_3": regex(r"^(none)"),
-      "h_4": regex(r"^(none)")
-    ];
-    string _anchor_tag;
-    string toc_txt_;
-    an_object["glossary_nugget"] = "";
-    an_object["blurb_nugget"] = "";
-    comp_obj_heading_                       = comp_obj_heading_.init;
-    comp_obj_heading_.use                   = "frontmatter";
-    comp_obj_heading_.is_of                 = "para";
-    comp_obj_heading_.is_a                  = "heading";
-    comp_obj_heading_.text                  = "Table of Contents";
-    comp_obj_heading_.ocn                   = 0;
-    comp_obj_heading_.obj_cite_number       = "";
-    comp_obj_heading_.segment_anchor_tag    = "toc";
-    comp_obj_heading_.marked_up_level       = "1";
-    comp_obj_heading_.heading_lev_markup    = 4;
-    comp_obj_heading_.heading_lev_collapsed = 1;
-    comp_obj_heading_.parent_ocn            = 1;
-    comp_obj_heading_.parent_lev_markup     = 0;
-    comp_obj_heading_.ptr_html_segnames     = html_segnames_ptr;
-    comp_obj_heading_.anchor_tags           = ["toc"];
-    auto toc_head                           = comp_obj_heading_;
-    html_segnames_ptr_cntr++;
-    the_table_of_contents_section = [
-      "seg": [toc_head],
-      "scroll": [toc_head],
-    ];
-    auto mkup = InlineMarkup();
-    auto munge = ObjInlineMarkupMunge();
-    auto note_section = NotesSection();
-    auto bookindex_extract_hash = BookIndexNuggetHash();
-    string[][string] lev4_subtoc;
-    string[] html_segnames=["toc"];
-    int cnt1 = 1; int cnt2 = 1; int cnt3 = 1;
-    /+ abstraction init ↑ +/
-    /+ ↓ loop markup document/text line by line +/
-    srcDocLoop:
-    foreach (line; markup_sourcefile_content) {
-      /+ ↓ markup document/text line by line +/
-      /+ scope +/
-      scope(exit) {
-      }
-      scope(failure) {
-        stderr.writefln(
-          "%s\n%s\n%s:%s failed here:\n  line: %s",
-          __MODULE__, __FUNCTION__,
-          __FILE__, __LINE__,
-          line,
-        );
-      }
-      line = (line).replaceAll(rgx.true_dollar, "$$$$");
-        /+ dollar represented as $$ needed to stop submatching on $
-           (substitutions using ${identifiers} must take into account (i.e. happen earlier))
-         +/
-      debug(source) {                                  // source lines
-        writeln(line);
-      }
-      debug(srclines) {
-        if (!line.empty) {                             // source lines, not empty
-          writefln(
-            "* %s",
-            line
-          );
-        }
-      }
-      if (!line.empty) {
-        _check_ocn_status_(line, type);
-      }
-      if (type["code"] == TriState.on) {
-        /+ block object: code +/
-        _code_block_(line, an_object, type);
-        continue;
-      } else if (!matchFirst(line, rgx.skip_from_regular_parse)) {
-        /+ object other than "code block" object
-           (includes regular text paragraph, headings & blocks other than code) +/
-        /+ heading, glossary, blurb, poem, group, block, quote, table +/
-        if (line.matchFirst(rgx.heading_biblio)
-        || (type["biblio_section"] == State.on
-        && (!(line.matchFirst(rgx.heading_blurb_glossary)))
-        && (!(line.matchFirst(rgx.heading)))
-        && (!(line.matchFirst(rgx.comment))))) {
-          /+ within section (block object): biblio +/
-          type["glossary_section"] = State.off;
-          type["biblio_section"] = State.on;
-          type["blurb_section"] = State.off;
-          if (opt_action["backmatter"] && opt_action["section_biblio"]) {
-            _biblio_block_(line, type, bib_entry, biblio_entry_str_json, biblio_arr_json);
-            debug(bibliobuild) {
-              writeln("-  ", biblio_entry_str_json);
-              writeln("-> ", biblio_arr_json.length);
-            }
-          }
-          continue;
-        } else if (line.matchFirst(rgx.heading_glossary)
-        || (type["glossary_section"] == State.on
-        && (!(line.matchFirst(rgx.heading_biblio_blurb)))
-        && (!(line.matchFirst(rgx.heading)))
-        && (!(line.matchFirst(rgx.comment))))) {
-          /+ within section (block object): glossary +/
-          debug(glossary) {
-            writeln(__LINE__);
-            writeln(line);
-          }
-          type["glossary_section"] = State.on;
-          type["biblio_section"] = State.off;
-          type["blurb_section"] = State.off;
-          if (opt_action["backmatter"] && opt_action["section_glossary"]) {
-            indent=[
-              "hang_position" : 0,
-              "base_position" : 0,
-            ];
-            bullet = false;
-            type["para"] = State.on;
-            line_occur["para"] = State.off;
-            an_object_key="glossary_nugget"; //
-            if (line.matchFirst(rgx.heading_glossary)) {
-              comp_obj_heading_                       = comp_obj_heading_.init;
-              comp_obj_heading_.use                   = "backmatter";
-              comp_obj_heading_.is_of                 = "para";
-              comp_obj_heading_.is_a                  = "heading";
-              comp_obj_heading_.text                  = "Glossary";
-              comp_obj_heading_.ocn                   = 0;
-              comp_obj_heading_.obj_cite_number       = "";
-              comp_obj_heading_.segment_anchor_tag    = "_part_glossary";
-              comp_obj_heading_.marked_up_level       = "B";
-              comp_obj_heading_.heading_lev_markup    = 1;
-              comp_obj_heading_.heading_lev_collapsed = 1;
-              comp_obj_heading_.parent_ocn            = 1;
-              comp_obj_heading_.parent_lev_markup     = 0;
-              the_glossary_section                    ~= comp_obj_heading_;
-              comp_obj_heading_                       = comp_obj_heading_.init;
-              comp_obj_heading_.use                   = "backmatter";
-              comp_obj_heading_.is_of                 = "para";
-              comp_obj_heading_.is_a                  = "heading";
-              comp_obj_heading_.text                  = "Glossary";
-              comp_obj_heading_.ocn                   = 0;
-              comp_obj_heading_.obj_cite_number       = "";
-              comp_obj_heading_.segment_anchor_tag    = "glossary";
-              comp_obj_heading_.marked_up_level       = "1";
-              comp_obj_heading_.heading_lev_markup    = 4;
-              comp_obj_heading_.heading_lev_collapsed = 2;
-              comp_obj_heading_.parent_ocn            = 1;
-              comp_obj_heading_.parent_lev_markup     = 0;
-              comp_obj_heading_.anchor_tags           = ["glossary"];
-              the_glossary_section                    ~= comp_obj_heading_;
-            } else {
-              _para_match_(line, an_object, an_object_key, indent, bullet, type, line_occur);
-              comp_obj_para                       = comp_obj_para.init;
-              comp_obj_para.use                   = "backmatter";
-              comp_obj_para.is_of                 = "para";
-              comp_obj_para.is_a                  = "glossary";
-              comp_obj_para.text                  = line.to!string.strip;
-              comp_obj_para.ocn                   = 0;
-              comp_obj_para.obj_cite_number       = "";
-              comp_obj_para.indent_hang           = indent["hang_position"];
-              comp_obj_para.indent_base           = indent["base_position"];
-              comp_obj_para.bullet                = bullet;
-              the_glossary_section                ~= comp_obj_para;
-            }
-            type["ocn_status"] = TriState.off;
-          }
-          continue;
-        } else if (line.matchFirst(rgx.heading_blurb)
-        || (type["blurb_section"] == State.on
-        && (!(line.matchFirst(rgx.heading_biblio_glossary)))
-        && (!(line.matchFirst(rgx.heading)))
-        && (!(line.matchFirst(rgx.comment))))) {
-          /+ within section (block object): blurb +/
-          debug(blurb) {
-            writeln(__LINE__);
-            writeln(line);
-          }
-          type["glossary_section"] = State.off;
-          type["biblio_section"] = State.off;
-          type["blurb_section"] = State.on;
-          if (opt_action["backmatter"] && opt_action["section_blurb"]) {
-            indent=[
-              "hang_position" : 0,
-              "base_position" : 0,
-            ];
-            bullet = false;
-            type["para"] = State.on;
-            line_occur["para"] = State.off;
-            an_object_key="blurb_nugget";
-            if (line.matchFirst(rgx.heading_blurb)) {
-              comp_obj_heading_                       = comp_obj_heading_.init;
-              comp_obj_heading_.use                   = "backmatter";
-              comp_obj_heading_.is_of                 = "para";
-              comp_obj_heading_.is_a                  = "heading";
-              comp_obj_heading_.text                  = "Blurb";
-              comp_obj_heading_.ocn                   = 0;
-              comp_obj_heading_.obj_cite_number       = "";
-              comp_obj_heading_.segment_anchor_tag    = "_part_blurb";
-              comp_obj_heading_.marked_up_level       = "B";
-              comp_obj_heading_.heading_lev_markup    = 1;
-              comp_obj_heading_.heading_lev_collapsed = 1;
-              comp_obj_heading_.parent_ocn            = 1;
-              comp_obj_heading_.parent_lev_markup     = 0;
-              the_blurb_section                       ~= comp_obj_heading_;
-              comp_obj_heading_                       = comp_obj_heading_.init;
-              comp_obj_heading_.use                   = "backmatter";
-              comp_obj_heading_.is_of                 = "para";
-              comp_obj_heading_.is_a                  = "heading";
-              comp_obj_heading_.text                  = "Blurb";
-              comp_obj_heading_.ocn                   = 0;
-              comp_obj_heading_.obj_cite_number       = "";
-              comp_obj_heading_.segment_anchor_tag    = "blurb";
-              comp_obj_heading_.marked_up_level       = "1";
-              comp_obj_heading_.heading_lev_markup    = 4;
-              comp_obj_heading_.heading_lev_collapsed = 2;
-              comp_obj_heading_.parent_ocn            = 1;
-              comp_obj_heading_.parent_lev_markup     = 0;
-              comp_obj_heading_.anchor_tags           = ["blurb"];
-              the_blurb_section                       ~= comp_obj_heading_;
-            } else if (line.matchFirst(rgx.heading)
-            && (opt_action["backmatter"] && opt_action["section_blurb"])) {
-              comp_obj_heading_                       = comp_obj_heading_.init;
-              comp_obj_heading_.use                   = "backmatter";
-              comp_obj_heading_.is_of                 = "para";
-              comp_obj_heading_.is_a                  = "heading";
-              comp_obj_heading_.text                  = line.to!string;
-              comp_obj_heading_.ocn                   = 0;
-              comp_obj_heading_.obj_cite_number       = "";
-              comp_obj_heading_.segment_anchor_tag    = "blurb";
-              comp_obj_heading_.marked_up_level       = an_object["lev"].to!string;
-              comp_obj_heading_.heading_lev_markup    = an_object["lev_markup_number"].to!int;    // make int, remove need to conv
-              comp_obj_heading_.heading_lev_collapsed = an_object["lev_collapsed_number"].to!int; // make int, remove need to conv
-              comp_obj_heading_.parent_ocn            = 1;
-              comp_obj_heading_.parent_lev_markup     = 0;
-              the_blurb_section                   ~= comp_obj_heading_;
-            } else {
-              _para_match_(line, an_object, an_object_key, indent, bullet, type, line_occur);
-              comp_obj_para                       = comp_obj_para.init;
-              comp_obj_para.use                   = "backmatter";
-              comp_obj_para.is_of                 = "para";
-              comp_obj_para.is_a                  = "blurb";
-              comp_obj_para.text                  = line.to!string.strip;
-              comp_obj_para.ocn                   = 0;
-              comp_obj_para.obj_cite_number       = "";
-              comp_obj_para.indent_hang           = indent["hang_position"];
-              comp_obj_para.indent_base           = indent["base_position"];
-              comp_obj_para.bullet                = bullet;
-              the_blurb_section                   ~= comp_obj_para;
-            }
-            type["ocn_status"] = TriState.off;
-          }
-          continue;
-        } else if (type["quote"] == TriState.on) {
-          /+ within block object: quote +/
-          _quote_block_(line, an_object, type);
-          continue;
-        /+ within block object: group +/
-        } else if (type["group"] == TriState.on) {
-          /+ within block object: group +/
-          line = (line)
-            .replaceAll(rgx.para_delimiter, mkup.br_paragraph ~ "$1");
-          _group_block_(line, an_object, type);
-          continue;
-        } else if (type["block"] == TriState.on) {
-          /+ within block object: block +/
-          if (auto m = line.match(rgx.spaces_line_start)) {
-            line = (line)
-              .replaceAll(rgx.spaces_line_start, (m.captures[1]).translate([ ' ' : mkup.nbsp ]));
-          }
-          if (auto m = line.match(rgx.spaces_multiple)) {
-            line = (line)
-              .replaceAll(rgx.spaces_multiple, (m.captures[1]).translate([ ' ' : mkup.nbsp ]));
-          }
-          _block_block_(line, an_object, type);
-          continue;
-        } else if (type["poem"] == TriState.on) {
-          /+ within block object: poem +/
-          _poem_block_(line, an_object, type, cntr, obj_cite_number_poem, dochead_make_aa);
-          continue;
-        } else if (type["table"] == TriState.on) {
-          /+ within block object: table +/
-          _table_block_(line, an_object, type, dochead_make_aa);
-          continue;
-        } else {
-          /+ not within a block group +/
-          assert(
-            (type["blocks"] == TriState.off)
-            || (type["blocks"] == TriState.closing),
-            "block status: none or closed"
-          );
-          assertions_flag_types_block_status_none_or_closed(type);
-          if (line.matchFirst(rgx.block_open)) {
-            if (line.matchFirst(rgx.block_poem_open)) {
-              /+ poem to verse exceptions! +/
-              object_reset(an_object);
-              processing.remove("verse");
-              obj_cite_number_poem["start"] = obj_cite_number.to!string;
-            }
-            _start_block_(line, type, obj_cite_number_poem);
-            continue;
-          } else if (!line.empty) {
-            /+ line not empty +/
-            /+ non blocks (headings, paragraphs) & closed blocks +/
-            assert(
-              !line.empty,
-              "line tested, line not empty surely:\n  \"" ~ line ~ "\""
-            );
-            assert(
-              (type["blocks"] == TriState.off)
-              || (type["blocks"] == TriState.closing),
-              "code block status: none or closed"
-            );
-            if (type["blocks"] == TriState.closing) {
-              debug(check) {                           // block
-                writeln(__LINE__);
-                writeln(line);
-              }
-              assert(
-                line.matchFirst(rgx.book_index)
-                || line.matchFirst(rgx.book_index_open)
-                || type["book_index"] == State.on,
-                "\nblocks closed, unless followed by book index, non-matching line:\n  \""
-                ~ line ~ "\""
-              );
-            }
-            if (line.matchFirst(rgx.book_index)
-            || line.matchFirst(rgx.book_index_open)
-            || type["book_index"] == State.on )  {
-              /+ book_index +/
-              _book_index_(line, book_idx_tmp, an_object, type, opt_action);
-            } else {
-              /+ not book_index +/
-              an_object_key="body_nugget";
-              if (auto m = matchFirst(line, rgx.comment)) {
-                /+ matched comment +/
-                debug(comment) {
-                  writeln(line);
-                }
-                an_object[an_object_key] ~= line ~= "\n";
-                comp_obj_comment                   = comp_obj_comment.init;
-                comp_obj_comment.use               = "comment";
-                comp_obj_comment.is_of             = "comment";
-                comp_obj_comment.is_a              = "comment";
-                comp_obj_comment.text              = an_object[an_object_key].strip;
-                the_document_body_section          ~= comp_obj_comment;
-                _common_reset_(line_occur, an_object, type);
-                processing.remove("verse");
-                ++cntr;
-              } else if (((line_occur["para"] == State.off)
-              && (line_occur["heading"] == State.off))
-              && ((type["para"] == State.off)
-              && (type["heading"] == State.off))) {
-                /+ heading or para but neither flag nor line exists +/
-                if ((dochead_make_aa["make"]["headings"].length > 2)
-                && (type["make_headings"] == State.off)) {
-                  /+ heading found +/
-                  _heading_found_(line, dochead_make_aa["make"]["headings"], heading_match_str, heading_match_rgx, type);
-                }
-                if ((type["make_headings"] == State.on)
-                && ((line_occur["para"] == State.off)
-                && (line_occur["heading"] == State.off))
-                && ((type["para"] == State.off)
-                && (type["heading"] == State.off))) {
-                  /+ heading make set +/
-                  line = _heading_make_set_(line, line_occur, heading_match_rgx, type);
-                }
-                /+ TODO node info: all headings identified at this point,
-                   - extract node info here??
-                   - how long can it wait?
-                   - should be incorporated in composite objects
-                   - should happen before endnote links set (they need to be moved down?)
-                +/
-                if (line.matchFirst(rgx.heading)) {
-                  /+ heading match +/
-                  _heading_matched_(line, line_occur, an_object, an_object_key, lv, collapsed_lev, type, dochead_meta_aa);
-                } else if (line_occur["para"] == State.off) {
-                  /+ para match +/
-                  an_object_key="body_nugget";
-                  _para_match_(line, an_object, an_object_key, indent, bullet, type, line_occur);
-                }
-              } else if (line_occur["heading"] > State.off) {
-                /+ heading +/
-                debug(heading) {
-                  writeln(line);
-                }
-                an_object[an_object_key] ~= line ~= "\n";
-                ++line_occur["heading"];
-              } else if (line_occur["para"] > State.off) {
-                /+ paragraph +/
-                debug(para) {
-                  writeln(an_object_key, "-> ", line);
-                }
-                an_object[an_object_key] ~= " " ~ line;
-                ++line_occur["para"];
-              }
-            }
-          } else if (type["blocks"] == TriState.closing) {
-            /+ line empty, with blocks flag +/
-            _block_flag_line_empty_(
-              bookindex_extract_hash,
-              line,
-              an_object,
-              the_document_body_section,
-              bookindex_unordered_hashes,
-              obj_cite_number,
-              comp_obj_heading,
-              cntr,
-              type,
-              obj_cite_number_poem,
-              dochead_make_aa
-            );
-          } else {
-            /+ line.empty, post contents, empty variables: +/
-            assert(
-              line.empty,
-              "\nline should be empty:\n  \""
-              ~ line ~ "\""
-            );
-            assert(
-              (type["blocks"] == State.off),
-              "code block status: none"
-            );
-            if ((type["heading"] == State.on)
-            && (line_occur["heading"] > State.off)) {
-              /+ heading object (current line empty) +/
-              obj_cite_number = (an_object["lev_markup_number"].to!int == 0)
-              ? (ocn_emit(3))
-              : (obj_cite_number = ocn_emit(type["ocn_status"]));
-              an_object["is"] = "heading";
-              an_object_key="body_nugget";
-              auto substantive_object_and_anchor_tags_tuple =
-                obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-              an_object["substantive"] = substantive_object_and_anchor_tags_tuple[sObj.content];
-              anchor_tags = substantive_object_and_anchor_tags_tuple[sObj.anchor_tags];
-              if (an_object["lev_markup_number"].to!int == 4) {
-                segment_anchor_tag_that_object_belongs_to = anchor_tags[0];
-                segment_anchor_tag_that_object_belongs_to_uri = anchor_tags[0] ~ ".fnSuffix";
-                anchor_tag_ = anchor_tags[0];
-              } else if (an_object["lev_markup_number"].to!int > 4) {
-                segment_anchor_tag_that_object_belongs_to = anchor_tag_;
-                segment_anchor_tag_that_object_belongs_to_uri = anchor_tag_ ~ ".fnSuffix#" ~ obj_cite_number.to!string;
-              } else if (an_object["lev_markup_number"].to!int < 4) {
-              string segn;
-                switch (an_object["lev_markup_number"].to!int) {
-                case 0:
-                  segn = "_the_title";
-                  goto default;
-                case 1:
-                  segn = "_part_" ~ cnt1.to!string;
-                  ++cnt1;
-                  goto default;
-                case 2:
-                  segn = "_part_" ~  cnt1.to!string ~ "_" ~ cnt2.to!string;
-                  ++cnt2;
-                  goto default;
-                case 3:
-                  segn =  "_part_" ~  cnt1.to!string ~ "_" ~ cnt2.to!string ~ "_" ~ cnt3.to!string;
-                  ++cnt3;
-                  goto default;
-                default:
-                  segment_anchor_tag_that_object_belongs_to = segn;
-                  segment_anchor_tag_that_object_belongs_to_uri = segn ~ ".fnSuffix";
-                  break;
-                }
-              }
-              an_object["bookindex_nugget"] =
-                ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-              bookindex_unordered_hashes =
-                bookindex_extract_hash.bookindex_nugget_hash(an_object["bookindex_nugget"], obj_cite_number, segment_anchor_tag_that_object_belongs_to);
-              /+ (incrementally build toc) table of contents here! +/
-              _anchor_tag=to!string(obj_cite_number);
-              the_table_of_contents_section = obj_im.table_of_contents_gather_headings(
-                an_object,
-                dochead_make_aa,
-                segment_anchor_tag_that_object_belongs_to,
-                _anchor_tag,
-                lev4_subtoc,
-                the_table_of_contents_section,
-              );
-              if (an_object["lev_markup_number"] == "4") {
-                html_segnames ~= segment_anchor_tag_that_object_belongs_to;
-                html_segnames_ptr = html_segnames_ptr_cntr;
-                html_segnames_ptr_cntr++;
-              }
-              auto comp_obj_heading =
-                node_construct.node_emitter_heading(
-                  an_object["substantive"],                     // string
-                  an_object["lev"],                             // string
-                  an_object["lev_markup_number"],               // string
-                  an_object["lev_collapsed_number"],            // string
-                  segment_anchor_tag_that_object_belongs_to,    // string
-                  obj_cite_number,                              // int
-                  cntr,                                         // int
-                  heading_ptr,                                  // int
-                  lv_ancestors,                                 // string[]
-                  an_object["is"],                              // string
-                  html_segnames_ptr,                            // int
-                  substantive_object_and_anchor_tags_tuple[sObj.notes_reg],
-                  substantive_object_and_anchor_tags_tuple[sObj.notes_star],
-                  substantive_object_and_anchor_tags_tuple[sObj.links],
-                );
-              ++heading_ptr;
-              debug(segments) {
-                writeln(an_object["lev_markup_number"]);
-                writeln(segment_anchor_tag_that_object_belongs_to);
-              }
-              the_document_body_section ~= comp_obj_heading;
-              debug(objectrelated1) { // check
-                writeln(line);
-              }
-              _common_reset_(line_occur, an_object, type);
-              an_object.remove("lev");
-              an_object.remove("lev_markup_number");
-              processing.remove("verse");
-              ++cntr;
-            } else if ((type["para"] == State.on)
-            && (line_occur["para"] > State.off)) {
-              /+ paragraph object (current line empty) +/
-              obj_cite_number = ocn_emit(type["ocn_status"]);
-              an_object["bookindex_nugget"] =
-                ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-              bookindex_unordered_hashes =
-                bookindex_extract_hash.bookindex_nugget_hash(an_object["bookindex_nugget"], obj_cite_number, segment_anchor_tag_that_object_belongs_to);
-              an_object["is"] = "para";
-              auto comp_obj_heading =
-                node_construct.node_location_emitter(
-                  content_non_header,
-                  segment_anchor_tag_that_object_belongs_to,
-                  obj_cite_number,
-                  cntr,
-                  heading_ptr-1,
-                  an_object["is"],
-                );
-              auto substantive_obj_misc_tuple =
-                obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-              an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-              anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-              comp_obj_para                       = comp_obj_para.init;
-              comp_obj_para.use                   = "body";
-              comp_obj_para.is_of                 = "para";
-              comp_obj_para.is_a                  = "para";
-              comp_obj_para.text                  = an_object["substantive"].to!string.strip;
-              comp_obj_para.ocn                   = obj_cite_number;
-              comp_obj_para.obj_cite_number       = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-              comp_obj_para.indent_hang           = indent["hang_position"];
-              comp_obj_para.indent_base           = indent["base_position"];
-              comp_obj_para.bullet                = bullet;
-              comp_obj_para.anchor_tags           = anchor_tags;
-              comp_obj_para.inline_notes_reg      = substantive_obj_misc_tuple[sObj.notes_reg];
-              comp_obj_para.inline_notes_star     = substantive_obj_misc_tuple[sObj.notes_star];
-              comp_obj_para.inline_links          = substantive_obj_misc_tuple[sObj.links];
-              the_document_body_section           ~= comp_obj_para;
-              _common_reset_(line_occur, an_object, type);
-              indent=[
-                "hang_position" : 0,
-                "base_position" : 0,
-              ];
-              bullet = false;
-              processing.remove("verse");
-              ++cntr;
-            } else {
-              assert(
-                line == null,
-                "line variable should be empty, should not occur"
-              );
-            }
-          } // close else for line empty
-        } // close else for not the above
-      } // close after non code, other blocks or regular text
-      /+ unless (the_document_body_section.length == 0) ? +/
-      if (the_document_body_section.length > 0) {
-        if (((the_document_body_section[$-1].is_a == "para")
-          || (the_document_body_section[$-1].is_a == "heading")
-          || (the_document_body_section[$-1].is_a == "quote")
-          || (the_document_body_section[$-1].is_a == "group")
-          || (the_document_body_section[$-1].is_a == "block")
-          || (the_document_body_section[$-1].is_a == "verse"))
-        && (the_document_body_section.length > previous_length)) {
-          if ((the_document_body_section[$-1].is_a == "heading")
-          && (the_document_body_section[$-1].heading_lev_markup < 5)) {
-            type["biblio_section"] = State.off;
-            type["glossary_section"] = State.off;
-            type["blurb_section"] = State.off;
-          }
-          if (the_document_body_section[$-1].is_a == "verse") {
-            /+ scan for endnotes for whole poem (each verse in poem) +/
-            foreach (i; previous_length .. the_document_body_section.length) {
-              if (the_document_body_section[i].is_a == "verse") {
-                if ((the_document_body_section[i].text).match(
-                  rgx.inline_notes_delimiter_al_regular_number_note
-                )) {
-                  note_section.gather_notes_for_endnote_section(
-                    the_document_body_section,
-                    segment_anchor_tag_that_object_belongs_to,
-                    to!int(i),
-                  );
-                }
-              }
-            }
-          } else {
-            /+ scan object for endnotes +/
-            previous_length = the_document_body_section.length.to!int;
-            if ((the_document_body_section[$-1].text).match(
-              rgx.inline_notes_delimiter_al_regular_number_note
-            )) {
-              previous_count=(the_document_body_section.length -1).to!int;
-              note_section.gather_notes_for_endnote_section(
-                the_document_body_section,
-                segment_anchor_tag_that_object_belongs_to,
-                to!int(the_document_body_section.length-1),
-              );
-            }
-          }
-          previous_length = the_document_body_section.length.to!int;
-        }
-      }
-    } /+ ← closed: loop markup document/text line by line +/
-    /+ ↓ post loop markup document/text +/
-    auto en_tuple =
-      note_section.endnote_objects(obj_cite_number, opt_action);
-    static assert(!isTypeTuple!(en_tuple));
-    auto the_endnotes_section = en_tuple[0];
-    obj_cite_number = en_tuple[1];
-    debug(endnotes) {
-      writefln(
-        "%s %s",
-        __LINE__,
-        the_endnotes_section.length
-      );
-      foreach (o; the_endnotes_section) {
-        writeln(o);
-      }
-    }
-    if (an_object["glossary_nugget"].length == 0) {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.use                   = "empty";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "(skip) there is no Glossary section";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      the_glossary_section                    ~= comp_obj_heading_;
-    } else {
-      writeln("gloss");
-    }
-    debug(glossary) {
-      foreach (gloss; the_glossary_section) {
-        writeln(gloss.text);
-      }
-    }
-    auto biblio_unsorted_incomplete = biblio_arr_json.dup;
-    auto biblio = Bibliography();
-    auto biblio_ordered =
-      biblio._bibliography_(biblio_unsorted_incomplete, bib_arr_json);
-    if (biblio_ordered.length > 0) {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.use                   = "backmatter";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Bibliography";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.segment_anchor_tag    = "_part_bibliography";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      the_bibliography_section                ~= comp_obj_heading_;
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.use                   = "backmatter";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "Bibliography";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.segment_anchor_tag    = "bibliography";
-      comp_obj_heading_.marked_up_level       = "1";
-      comp_obj_heading_.heading_lev_markup    = 4;
-      comp_obj_heading_.heading_lev_collapsed = 2;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading_.anchor_tags           = ["bibliography"];
-      the_bibliography_section                ~= comp_obj_heading_;
-    } else {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.use                   = "empty";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "(skip) there is no Bibliography";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_heading_.obj_cite_number       = "";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      the_bibliography_section                ~= comp_obj_heading_;
-    }
-    string out_;
-    foreach (entry; biblio_ordered) {
-      out_ = format(
-        "%s \"%s\"%s%s%s%s%s%s%s%s%s.",
-        ((entry["author"].str.empty) ? entry["editor"].str : entry["author"].str),
-        entry["fulltitle"].str,
-        ((entry["journal"].str.empty) ? "" : ", /{" ~ entry["journal"].str ~ "}/"),
-        ((entry["volume"].str.empty) ? "" : ", " ~ entry["volume"].str),
-        ((entry["in"].str.empty) ? "" : ", " ~ entry["in"].str),
-        ((!(entry["author"].str.empty) && (!(entry["editor"].str.empty))) ? entry["editor"].str : ""),
-        ", " ~ entry["year"].str,
-        ((entry["pages"].str.empty) ? "" : ", " ~ entry["pages"].str),
-        ((entry["publisher"].str.empty) ? "" : ", " ~ entry["publisher"].str),
-        ((entry["place"].str.empty) ? "" : ", " ~ entry["place"].str),
-        ((entry["url"].str.empty) ? "" : ", [" ~ entry["url"].str ~ "]"),
-      );
-      comp_obj_para                       = comp_obj_para.init;
-      comp_obj_para.use                   = "backmatter";
-      comp_obj_para.is_of                 = "para";
-      comp_obj_para.is_a                  = "bibliography";
-      comp_obj_para.text                  = out_.to!string.strip;
-      comp_obj_para.ocn                   = 0;
-      comp_obj_para.obj_cite_number       = "";
-      comp_obj_para.indent_hang           = 0;
-      comp_obj_para.indent_base           = 1;
-      comp_obj_para.bullet                = bullet;
-      comp_obj_para.anchor_tags           = anchor_tags;
-      the_bibliography_section            ~= comp_obj_para;
-    }
-    debug(bibliosection) {
-      foreach (o; the_bibliography_section) {
-        writeln(o.text);
-      }
-    }
-    auto bi = BookIndexReportSection();
-    auto bi_tuple =
-      bi.bookindex_build_abstraction_section(
-        bookindex_unordered_hashes,
-        obj_cite_number,
-        opt_action,
-      );
-    destroy(bookindex_unordered_hashes);
-    static assert(!isTypeTuple!(bi_tuple));
-    auto the_bookindex_section = bi_tuple[0];
-    obj_cite_number = bi_tuple[1];
-    debug(bookindex) {
-      foreach (bi_entry; the_bookindex_section["seg"]) {
-        writeln(bi_entry);
-      }
-    }
-    if (an_object["blurb_nugget"].length == 0) {
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.use                   = "empty";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.text                  = "(skip) there is no Blurb section";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_para.obj_cite_number           = "";
-      comp_obj_heading_.segment_anchor_tag    = "";
-      comp_obj_heading_.marked_up_level       = "B";
-      comp_obj_heading_.heading_lev_markup    = 1;
-      comp_obj_heading_.heading_lev_collapsed = 1;
-      comp_obj_heading_.parent_ocn            = 1;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      the_blurb_section                       ~= comp_obj_heading_;
-    }
-    debug(blurb) {
-      foreach (blurb; the_blurb_section) {
-        writeln(blurb.text);
-      }
-    }
-    indent=[
-      "hang_position" : 1,
-      "base_position" : 1,
-    ];
-    comp_obj_toc                       = comp_obj_toc.init;
-    comp_obj_toc.use                   = "frontmatter";
-    comp_obj_toc.is_of                 = "para";
-    comp_obj_toc.is_a                  = "toc";
-    comp_obj_toc.ocn                   = 0;
-    comp_obj_toc.obj_cite_number       = "";
-    comp_obj_toc.indent_hang           = indent["hang_position"];
-    comp_obj_toc.indent_base           = indent["base_position"];
-    comp_obj_toc.bullet                = false;
-    if (the_endnotes_section.length > 1) {
-      toc_txt_ = format(
-        "{ %s }%s%s%s",
-        "Endnotes",
-        mkup.mark_internal_site_lnk,
-        "endnotes",               // segment_anchor_tag_that_object_belongs_to
-        ".fnSuffix",
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["seg"]    ~= comp_obj_toc;
-    }
-    if (the_glossary_section.length > 1) {
-      toc_txt_ = format(
-        "{ %s }%s%s%s",
-        "Glossary",
-        mkup.mark_internal_site_lnk,
-        "glossary",               // segment_anchor_tag_that_object_belongs_to
-        ".fnSuffix",
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["seg"]    ~= comp_obj_toc;
-      toc_txt_ = format(
-        "{ %s }#%s",
-        "Glossary",
-        "glossary",               // _anchor_tag
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["scroll"] ~= comp_obj_toc;
-    }
-    if (the_bibliography_section.length > 1){
-      toc_txt_ = format(
-        "{ %s }%s%s%s",
-        "Bibliography",
-        mkup.mark_internal_site_lnk,
-        "bibliography",           // segment_anchor_tag_that_object_belongs_to
-        ".fnSuffix",
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["seg"]    ~= comp_obj_toc;
-    
-      toc_txt_ = format(
-        "{ %s }#%s",
-        "Bibliography",
-        "bibliography",           // _anchor_tag
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["scroll"] ~= comp_obj_toc;
-    }
-    if (the_bookindex_section["seg"].length > 1) {
-      toc_txt_ = format(
-        "{ %s }%s%s%s",
-        "Book Index",
-        mkup.mark_internal_site_lnk,
-        "bookindex",              // segment_anchor_tag_that_object_belongs_to
-        ".fnSuffix",
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["seg"]    ~= comp_obj_toc;
-    }
-    if (the_bookindex_section["scroll"].length > 1) {
-      toc_txt_ = format(
-        "{ %s }#%s",
-        "Book Index",
-        "bookindex",              // _anchor_tag
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["scroll"] ~= comp_obj_toc;
-    }
-    if (the_blurb_section.length > 1) {
-      toc_txt_ = format(
-        "{ %s }%s%s%s",
-        "Blurb",
-        mkup.mark_internal_site_lnk,
-        "blurb",                  // segment_anchor_tag_that_object_belongs_to
-        ".fnSuffix",
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      comp_obj_toc.inline_links               = true;
-      the_table_of_contents_section["seg"]    ~= comp_obj_toc;
-      toc_txt_ = format(
-        "{ %s }#%s",
-        "Blurb",
-        "blurb",                  // _anchor_tag
-      );
-      toc_txt_= munge.url_links(toc_txt_);
-      comp_obj_toc.inline_links               = true;
-      comp_obj_toc.text                       = toc_txt_.to!string.strip;
-      the_table_of_contents_section["scroll"] ~= comp_obj_toc;
-    }
-    debug(toc) {
-      writefln(
-        "%s %s",
-        __LINE__,
-        the_table_of_contents_section["seg"].length
-      );
-      foreach (toc_linked_heading; the_table_of_contents_section["seg"]) {
-        writeln(mkup.indent_by_spaces_provided(toc_linked_heading.indent_hang), toc_linked_heading.text);
-      }
-    }
-    debug(tocscroll) {
-      writefln(
-        "%s %s",
-        __LINE__,
-        the_table_of_contents_section["seg"].length
-      );
-      foreach (toc_linked_heading; the_table_of_contents_section["scroll"]) {
-        writeln(mkup.indent_by_spaces_provided(toc_linked_heading.indent_hang), toc_linked_heading.text);
-      }
-    }
-    the_document_head_section ~= the_document_body_section[0];
-    the_document_body_section=the_document_body_section[1..$];
-    if (the_endnotes_section.length > 1) {
-      html_segnames ~= "endnotes";
-      html_segnames_ptr = html_segnames_ptr_cntr;
-      foreach (ref section; the_endnotes_section) {
-        if (section.heading_lev_markup == 4) {
-          section.ptr_html_segnames = html_segnames_ptr;
-          break;
-        }
-      }
-      html_segnames_ptr_cntr++;
-    }
-    if (the_glossary_section.length > 1) {
-      html_segnames ~= "glossary";
-      html_segnames_ptr = html_segnames_ptr_cntr;
-      foreach (ref section; the_glossary_section) {
-        if (section.heading_lev_markup == 4) {
-          section.ptr_html_segnames = html_segnames_ptr;
-          break;
-        }
-      }
-      html_segnames_ptr_cntr++;
-    }
-    if (the_bibliography_section.length > 1) {
-      html_segnames ~= "bibliography";
-      html_segnames_ptr = html_segnames_ptr_cntr;
-      foreach (ref section; the_bibliography_section) {
-        if (section.heading_lev_markup == 4) {
-          section.ptr_html_segnames = html_segnames_ptr;
-          break;
-        }
-      }
-      html_segnames_ptr_cntr++;
-    }
-    if (the_bookindex_section["scroll"].length > 1) {
-      html_segnames ~= "bookindex";
-      html_segnames_ptr = html_segnames_ptr_cntr;
-      foreach (ref section; the_bookindex_section["scroll"]) {
-        if (section.heading_lev_markup == 4) {
-          section.ptr_html_segnames = html_segnames_ptr;
-          break;
-        }
-      }
-      foreach (ref section; the_bookindex_section["seg"]) {
-        if (section.heading_lev_markup == 4) {
-          section.ptr_html_segnames = html_segnames_ptr;
-          break;
-        }
-      }
-      html_segnames_ptr_cntr++;
-    }
-    if (the_blurb_section.length > 1) {
-      html_segnames ~= "blurb";
-      html_segnames_ptr = html_segnames_ptr_cntr;
-      foreach (ref section; the_blurb_section) {
-        if (section.heading_lev_markup == 4) {
-          section.ptr_html_segnames = html_segnames_ptr;
-          break;
-        }
-      }
-      html_segnames_ptr_cntr++;
-    }
-    string[] _images;
-    auto extract_images(S)(S content_block) {
-      string[] images_;
-      if (auto m = content_block.matchAll(rgx.image)) {
-        images_ ~= m.captures[1];
-      }
-      return images_;
-    }
-    string[] segnames_0_4;
-    foreach (ref obj; the_document_head_section) {
-      if (obj.is_a == "heading") {
-        debug(dom) {
-          writeln(obj.text);
-        }
-        if (obj.heading_lev_markup <= 4) {
-          segnames_0_4 ~= obj.segment_anchor_tag;
-        }
-        if ((opt_action["html"])
-        || (opt_action["html-scroll"])
-        || (opt_action["html-seg"])
-        || (opt_action["epub"])) {
-          obj.dom_markedup =
-            dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-          obj.dom_collapsed =
-            dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-        }
-        heading_ancestors(obj, lv_ancestors);
-      }
-    }
-    if (the_table_of_contents_section["scroll"].length > 1) {
-      dom_markedup_buffer = dom_markedup.dup;
-      dom_collapsed_buffer = dom_collapsed.dup;
-      foreach (ref obj; the_table_of_contents_section["scroll"]) {
-        if (obj.is_a == "heading") {
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-      dom_markedup = dom_markedup_buffer.dup;
-      dom_collapsed = dom_collapsed_buffer.dup;
-      foreach (ref obj; the_table_of_contents_section["seg"]) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-            writeln(obj.text);
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-    }
-    /+ multiple 1~ levels, loop through document body +/
-    if (the_document_body_section.length > 1) {
-      foreach (ref obj; the_document_body_section) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-            writeln(obj.text);
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.lev4_subtoc = lev4_subtoc[obj.segment_anchor_tag];
-              obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-              if (html_segnames.length > obj.ptr_html_segnames + 1) {
-                obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              }
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        } else if (obj.is_a == "para") {
-           _images ~= extract_images(obj.text);
-        }
-      }
-    }
-    auto images=uniq(_images.sort());
-    /+ optional only one 1~ level +/
-    if (the_endnotes_section.length > 1) {
-      dom_markedup_buffer = dom_markedup.dup;
-      dom_collapsed_buffer = dom_collapsed.dup;
-      dom_markedup = dom_markedup_buffer.dup;
-      dom_collapsed = dom_collapsed_buffer.dup;
-      foreach (ref obj; the_endnotes_section) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-            writeln(obj.text);
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-              if (html_segnames.length > obj.ptr_html_segnames + 1) {
-                obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              }
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-    }
-    /+ optional only one 1~ level +/
-    if (the_glossary_section.length > 1) {
-      foreach (ref obj; the_glossary_section) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-            writeln(obj.text);
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-              if (html_segnames.length > obj.ptr_html_segnames + 1) {
-                obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              }
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-    }
-    /+ optional only one 1~ level +/
-    if (the_bibliography_section.length > 1) {
-      foreach (ref obj; the_bibliography_section) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-            writeln(obj.text);
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-              if (html_segnames.length > obj.ptr_html_segnames + 1) {
-                obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              }
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-    }
-    /+ optional only one 1~ level +/
-    if (the_bookindex_section["scroll"].length > 1) {
-      dom_markedup_buffer = dom_markedup.dup;
-      dom_collapsed_buffer = dom_collapsed.dup;
-      foreach (ref obj; the_bookindex_section["scroll"]) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-              if (html_segnames.length > obj.ptr_html_segnames + 1) {
-                obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              }
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-      dom_markedup = dom_markedup_buffer.dup;
-      dom_collapsed = dom_collapsed_buffer.dup;
-      foreach (ref obj; the_bookindex_section["seg"]) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-            writeln(obj.text);
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-              if (html_segnames.length > obj.ptr_html_segnames + 1) {
-                obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              }
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-    }
-    /+ optional only one 1~ level +/
-    if (the_blurb_section.length > 1) {
-      foreach (ref obj; the_blurb_section) {
-        if (obj.is_a == "heading") {
-          debug(dom) {
-            writeln(obj.text);
-          }
-          if (obj.heading_lev_markup <= 4) {
-            segnames_0_4 ~= obj.segment_anchor_tag;
-            if (obj.heading_lev_markup == 4) {
-              obj.segname_prev = html_segnames[obj.ptr_html_segnames - 1];
-              if (html_segnames.length > obj.ptr_html_segnames + 1) {
-                obj.segname_next = html_segnames[obj.ptr_html_segnames + 1];
-              }
-              assert(obj.segment_anchor_tag == html_segnames[obj.ptr_html_segnames]);
-            }
-          }
-          if ((opt_action["html"])
-          || (opt_action["html-scroll"])
-          || (opt_action["html-seg"])
-          || (opt_action["epub"])) {
-            obj.dom_markedup =
-              dom_set_markup_tags(dom_markedup, obj.heading_lev_markup).dup;
-            obj.dom_collapsed =
-              dom_set_collapsed_tags(dom_collapsed, obj.heading_lev_collapsed).dup;
-          }
-          heading_ancestors(obj, lv_ancestors);
-        }
-      }
-      /+ TODO
-        - note create/insert heading object sole purpose eof close all open tags
-          sort out:
-          - obj.dom_markedup = dom_markedup;
-          - obj.dom_collapsed = dom_collapsed;
-      +/
-      dom_markedup = dom_set_markup_tags(dom_markedup, 0);
-      dom_collapsed = dom_set_collapsed_tags(dom_collapsed, 0);
-      comp_obj_heading_                       = comp_obj_heading_.init;
-      comp_obj_heading_.use                   = "empty";
-      comp_obj_heading_.is_of                 = "para";
-      comp_obj_heading_.is_a                  = "heading";
-      comp_obj_heading_.ocn                   = 0;
-      comp_obj_para.obj_cite_number           = "";
-      comp_obj_heading_.segment_anchor_tag    = "";
-      comp_obj_heading_.marked_up_level       = "";
-      comp_obj_heading_.heading_lev_markup    = 9;
-      comp_obj_heading_.heading_lev_collapsed = 9;
-      comp_obj_heading_.parent_ocn            = 0;
-      comp_obj_heading_.parent_lev_markup     = 0;
-      comp_obj_heading_.dom_markedup          = dom_markedup.dup;
-      comp_obj_heading_.dom_collapsed         = dom_collapsed.dup;
-      the_dom_tail_section                    ~= comp_obj_heading_;
-    }
-    auto document_the = [
-      "head":             the_document_head_section,
-      "toc_seg":          the_table_of_contents_section["seg"],
-      "toc_scroll":       the_table_of_contents_section["scroll"],
-      /+ substantive/body: +/
-      "body":             the_document_body_section,
-      /+ backmatter: +/
-      "endnotes":         the_endnotes_section,
-      "glossary":         the_glossary_section,
-      "bibliography":     the_bibliography_section,
-      "bookindex_scroll": the_bookindex_section["scroll"],
-      "bookindex_seg":    the_bookindex_section["seg"],
-      "blurb":            the_blurb_section,
-      /+ dom tail only +/
-      "tail":             the_dom_tail_section,
-    ];
-    string[][string] document_section_keys_sequenced = [
-      "seg":    ["head", "toc_seg", "body",],
-      "scroll": ["head", "toc_scroll", "body",]
-    ];
-    if (document_the["endnotes"].length > 1) {
-      document_section_keys_sequenced["seg"]    ~= "endnotes";
-      document_section_keys_sequenced["scroll"] ~= "endnotes";
-    }
-    if (document_the["glossary"].length > 1) {
-      document_section_keys_sequenced["seg"]    ~= "glossary";
-      document_section_keys_sequenced["scroll"] ~= "glossary";
-    }
-    if (document_the["bibliography"].length > 1) {
-      document_section_keys_sequenced["seg"]    ~= "bibliography";
-      document_section_keys_sequenced["scroll"] ~= "bibliography";
-    }
-    if (document_the["bookindex_seg"].length > 1) {
-      document_section_keys_sequenced["seg"]    ~= "bookindex_seg";
-    }
-    if (document_the["bookindex_scroll"].length > 1) {
-      document_section_keys_sequenced["scroll"] ~= "bookindex_scroll";
-    }
-    if (document_the["blurb"].length > 1) {
-      document_section_keys_sequenced["seg"]    ~= "blurb";
-      document_section_keys_sequenced["scroll"] ~= "blurb";
-    }
-    if ((opt_action["html"])
-    || (opt_action["html-scroll"])
-    || (opt_action["html-seg"])
-    || (opt_action["epub"])) {
-      document_section_keys_sequenced["seg"]    ~= "tail";
-      document_section_keys_sequenced["scroll"] ~= "tail";
-    }
-    auto segnames = html_segnames.dup;
-    destroy(the_document_head_section);
-    destroy(the_table_of_contents_section);
-    destroy(the_document_body_section);
-    destroy(the_endnotes_section);
-    destroy(the_glossary_section);
-    destroy(the_bibliography_section);
-    destroy(the_bookindex_section);
-    destroy(the_blurb_section);
-    destroy(html_segnames);
-    destroy(bookindex_unordered_hashes);
-    destroy(an_object);
-    biblio_arr_json = [];
-    obj_cite_number=0;
-    obj_cite_number_=0;
-    html_segnames_ptr=0;
-    html_segnames_ptr_cntr=0;
-    content_non_header = "8";
-    dom_markedup = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-    dom_markedup_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-    dom_collapsed = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-    dom_collapsed_buffer = [ 0, 0, 0, 0, 0, 0, 0, 0, 0,];
-    auto t = tuple(
-      document_the,
-      docSectKeysSeq!()(document_section_keys_sequenced),
-      segnames,
-      segnames_0_4,
-      images,
-    );
-    return t;
-    /+ post loop markup document/text ↑ +/
-  } /+ ← closed: abstract doc source +/
-  /+ ↓ abstraction functions +/
-  auto object_reset(O)(ref O an_object) {
-    debug(asserts) {
-      static assert(is(typeof(an_object) == string[string]));
-    }
-    an_object.remove("body_nugget");
-    an_object.remove("substantive");
-    an_object.remove("is");
-    an_object.remove("attrib");
-    an_object.remove("bookindex_nugget");
-  }
-  auto _common_reset_(L,O,T)(
-    return ref L line_occur,
-    return ref O an_object,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line_occur) == int[string]));
-      static assert(is(typeof(an_object)  == string[string]));
-      static assert(is(typeof(type)       == int[string]));
-    }
-    line_occur["heading"] = State.off;
-    line_occur["para"]    = State.off;
-    type["heading"]       = State.off;
-    type["para"]          = State.off;
-    object_reset(an_object);
-  }
-  void _check_ocn_status_(L,T)(
-    L            line,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line) == char[]));
-      static assert(is(typeof(type) == int[string]));
-    }
-    auto rgx = Rgx();
-    if ((!line.empty) && (type["ocn_status_multi_obj"] == TriState.off)) {
-      /+ not multi-line object, check whether obj_cite_number is on or turned off +/
-      if (line.matchFirst(rgx.obj_cite_number_block_marks)) {
-        /+ switch off obj_cite_number +/
-        if (line.matchFirst(rgx.obj_cite_number_off_block)) {
-          type["ocn_status_multi_obj"] = TriState.on;
-          debug(ocnoff) {
-            writeln(line);
-          }
-        }
-        if (line.matchFirst(rgx.obj_cite_number_off_block_dh)) {
-          type["ocn_status_multi_obj"] = TriState.closing;
-          debug(ocnoff) {
-            writeln(line);
-          }
-        }
-      } else {
-        if (type["ocn_status_multi_obj"] == TriState.off) {
-          if (line.matchFirst(rgx.obj_cite_number_off)) {
-            type["ocn_status"] = TriState.on;
-          } else if (line.matchFirst(rgx.obj_cite_number_off_dh)) {
-            type["ocn_status"] = TriState.closing;
-          } else {
-            type["ocn_status"] = TriState.off;
-          }
-        } else {
-          type["ocn_status"] =
-            type["ocn_status_multi_obj"];
-        }
-      }
-    } else if ((!line.empty) && (type["ocn_status_multi_obj"] > TriState.off)) {
-      if (line.matchFirst(rgx.obj_cite_number_off_block_close)) {
-        type["ocn_status_multi_obj"] = TriState.off;
-        type["ocn_status"] = TriState.off;
-        debug(ocnoff) {
-          writeln(line);
-        }
-      }
-    }
-  }
-  void _start_block_(L,T,N)(
-    L            line,
-    return ref T type,
-    N            obj_cite_number_poem
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)                 == char[]));
-      static assert(is(typeof(type)                 == int[string]));
-      static assert(is(typeof(obj_cite_number_poem) == string[string]));
-    }
-    auto rgx = Rgx();
-    string code_block_syntax = "";
-    bool code_block_numbered = false;
-    if (auto m = line.matchFirst(rgx.block_curly_code_open)) {
-      /+ curly code open +/
-      code_block_syntax = (m.captures[1]) ? m.captures[1].to!string : "";
-      code_block_numbered = (m.captures[2] == "#") ? true : false;
-      debug(code) {                              // code (curly) open
-        writefln(
-          "* [code curly] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["code"] = TriState.on;
-      type["curly_code"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_curly_poem_open)) {
-      /+ curly poem open +/
-      debug(poem) {                              // poem (curly) open
-        writefln(
-          "* [poem curly] %s",
-          line
-        );
-      }
-      obj_cite_number_poem["start"] =
-        obj_cite_number.to!string;
-      type["blocks"] = TriState.on;
-      type["verse_new"] = State.on;
-      type["poem"] = TriState.on;
-      type["curly_poem"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_curly_group_open)) {
-      /+ curly group open +/
-      debug(group) {                             // group (curly) open
-        writefln(
-          "* [group curly] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["group"] = TriState.on;
-      type["curly_group"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_curly_block_open)) {
-      /+ curly block open +/
-      debug(block) {                             // block (curly) open
-        writefln(
-          "* [block curly] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["block"] = TriState.on;
-      type["curly_block"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_curly_quote_open)) {
-      /+ curly quote open +/
-      debug(quote) {                             // quote (curly) open
-        writefln(
-          "* [quote curly] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["quote"] = TriState.on;
-      type["curly_quote"] = TriState.on;
-    } else if (auto m = line.matchFirst(rgx.block_curly_table_open)) {
-      /+ curly table open +/
-      debug(table) {                             // table (curly) open
-        writefln(
-          "* [table curly] %s",
-          line
-        );
-      }
-      an_object["table_head"]            = m.captures[1].to!string;
-      an_object["block_type"]            = "curly";
-      type["blocks"]                     = TriState.on;
-      type["table"]                      = TriState.on;
-      type["curly_table"]                = TriState.on;
-    } else if (auto m = line.matchFirst(rgx.block_curly_table_special_markup)) {
-      /+ table: special table block markup syntax! +/
-      an_object["table_head"]            = m.captures[1].to!string;
-      an_object["block_type"]            = "special";
-      type["blocks"]                     = TriState.on;
-      type["table"]                      = TriState.on;
-      type["curly_table_special_markup"] = TriState.on;
-    } else if (auto m = line.matchFirst(rgx.block_tic_code_open)) {
-      /+ tic code open +/
-      code_block_syntax = (m.captures[1]) ? m.captures[1].to!string : "";
-      code_block_numbered = (m.captures[2] == "#") ? true : false;
-      debug(code) {                              // code (tic) open
-        writefln(
-          "* [code tic] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["code"] = TriState.on;
-      type["tic_code"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_tic_poem_open)) {
-      /+ tic poem open +/
-      debug(poem) {                              // poem (tic) open
-        writefln(
-          "* [poem tic] %s",
-          line
-        );
-      }
-      obj_cite_number_poem["start"] = obj_cite_number.to!string;
-      type["blocks"] = TriState.on;
-      type["verse_new"] = State.on;
-      type["poem"] = TriState.on;
-      type["tic_poem"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_tic_group_open)) {
-      /+ tic group open +/
-      debug(group) {                             // group (tic) open
-        writefln(
-          "* [group tic] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["group"] = TriState.on;
-      type["tic_group"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_tic_block_open)) {
-      /+ tic block open +/
-      debug(block) {                             // block (tic) open
-        writefln(
-          "* [block tic] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["block"] = TriState.on;
-      type["tic_block"] = TriState.on;
-    } else if (line.matchFirst(rgx.block_tic_quote_open)) {
-      /+ tic quote open +/
-      debug(quote) {                             // quote (tic) open
-        writefln(
-          "* [quote tic] %s",
-          line
-        );
-      }
-      type["blocks"] = TriState.on;
-      type["quote"] = TriState.on;
-      type["tic_quote"] = TriState.on;
-    } else if (auto m = line.matchFirst(rgx.block_tic_table_open)) {
-      /+ tic table open +/
-      debug(table) {                             // table (tic) open
-        writefln(
-          "* [table tic] %s",
-          line
-        );
-      }
-      an_object["table_head"]            = m.captures[1].to!string;
-      an_object["block_type"]            = "tic";
-      type["blocks"]                     = TriState.on;
-      type["table"]                      = TriState.on;
-      type["tic_table"]                  = TriState.on;
-    }
-  }
-  void _quote_block_(L,O,T)(
-    return ref L line,
-    return ref O an_object,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)      == char[]));
-      static assert(is(typeof(an_object) == string[string]));
-      static assert(is(typeof(type)      == int[string]));
-    }
-    auto rgx = Rgx();
-    if (type["curly_quote"] == TriState.on) {
-      if (line.matchFirst(rgx.block_curly_quote_close)) {
-        debug(quote) {                              // quote (curly) close
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key].stripRight;
-        type["blocks"]      = TriState.closing;
-        type["quote"]       = TriState.closing;
-        type["curly_quote"] = TriState.off;
-      } else {
-        debug(quote) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";   // build quote array (or string)
-      }
-    } else if (type["tic_quote"] == TriState.on) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(quote) {                              // quote (tic) close
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key].stripRight;
-        type["blocks"]    = TriState.closing;
-        type["quote"]     = TriState.closing;
-        type["tic_quote"] = TriState.off;
-      } else {
-        debug(quote) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";   // build quote array (or string)
-      }
-    }
-  }
-  void _group_block_(L,O,T)(
-    return ref L line,
-    return ref O an_object,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)      == char[]));
-      static assert(is(typeof(an_object) == string[string]));
-      static assert(is(typeof(type)      == int[string]));
-    }
-    auto rgx = Rgx();
-    if (type["curly_group"] == State.on) {
-      if (line.matchFirst(rgx.block_curly_group_close)) {
-        debug(group) {
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key].stripRight;
-        type["blocks"]      = TriState.closing;
-        type["group"]       = TriState.closing;
-        type["curly_group"] = TriState.off;
-      } else {
-        debug(group) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";   // build group array (or string)
-      }
-    } else if (type["tic_group"] == TriState.on) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(group) {
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key].stripRight;
-        type["blocks"]    = TriState.closing;
-        type["group"]     = TriState.closing;
-        type["tic_group"] = TriState.off;
-      } else {
-        debug(group) {                              // group
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";   // build group array (or string)
-      }
-    }
-  }
-  void _block_block_(L,O,T)(
-    return ref L line,
-    return ref O an_object,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)      == char[]));
-      static assert(is(typeof(an_object) == string[string]));
-      static assert(is(typeof(type)      == int[string]));
-    }
-    auto rgx = Rgx();
-    if (type["curly_block"] == TriState.on) {
-      if (line.matchFirst(rgx.block_curly_block_close)) {
-        debug(block) {                             // block (curly) close
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key].stripRight;
-        type["blocks"]      = TriState.closing;
-        type["block"]       = TriState.closing;
-        type["curly_block"] = TriState.off;
-      } else {
-        debug(block) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";   // build block array (or string)
-      }
-    } else if (type["tic_block"] == TriState.on) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(block) {
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key].stripRight;
-        type["blocks"]    = TriState.closing;
-        type["block"]     = TriState.closing;
-        type["tic_block"] = TriState.off;
-      } else {
-        debug(block) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";   // build block array (or string)
-      }
-    }
-  }
-  void _poem_block_(L,O,T,C,N,Ma)(
-    L     line,
-    return ref O an_object,
-    return ref T type,
-    return ref C cntr,
-    N            obj_cite_number_poem,
-    Ma           dochead_make_aa,
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)                 == char[]));
-      static assert(is(typeof(an_object)            == string[string]));
-      static assert(is(typeof(type)                 == int[string]));
-      static assert(is(typeof(cntr)                 == int));
-      static assert(is(typeof(obj_cite_number_poem) == string[string]));
-      static assert(is(typeof(dochead_make_aa)      == string[string][string]));
-    }
-    auto rgx = Rgx();
-    if (type["curly_poem"] == TriState.on) {
-      if (line.matchFirst(rgx.block_curly_poem_close)) {
-        if (an_object_key in an_object
-        || processing.length > 0) {
-          an_object[an_object_key]                    = "";
-          debug(poem) {                               // poem (curly) close
-            writefln(
-              "* [poem curly] %s",
-              line
-            );
-          }
-          if (processing.length > 0) {
-            an_object[an_object_key] = processing["verse"];
-          }
-          debug(poem) {                               // poem (curly) close
-            writeln(__LINE__);
-            writefln(
-              "* %s %s",
-              obj_cite_number,
-              line
-            );
-          }
-          if (an_object.length > 0) {
-            debug(poem) {                             // poem (curly) close
-              writeln(
-                obj_cite_number,
-                an_object[an_object_key]
-              );
-            }
-            an_object["is"]                           = "verse";
-            auto substantive_obj_misc_tuple =
-              obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-            an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-            anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-            comp_obj_block                            = comp_obj_block.init;
-            comp_obj_block.use                        = "body";
-            comp_obj_block.is_of                      = "block";
-            comp_obj_block.is_a                       = "verse";
-            comp_obj_block.ocn                        = obj_cite_number;
-            comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-            comp_obj_block.text                       = an_object["substantive"];
-            comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-            comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-            comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
-            the_document_body_section                 ~= comp_obj_block;
-          }
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-        obj_cite_number_poem["end"] =
-          obj_cite_number.to!string;
-        type["blocks"] = TriState.closing;
-        type["poem"] = TriState.closing;
-        type["curly_poem"] = TriState.off;
-      } else {
-        processing["verse"] ~= line ~= "\n";
-        if (type["verse_new"] == State.on) {
-          obj_cite_number =
-            ocn_emit(type["ocn_status"]);
-          type["verse_new"] = State.off;
-        } else if (line.matchFirst(rgx.newline_eol_delimiter_only)) {
-          processing["verse"] = processing["verse"].stripRight;
-          verse_line = TriState.off;
-          type["verse_new"] = State.on;
-        }
-        if (type["verse_new"] == State.on) {
-          verse_line=1;
-          an_object[an_object_key] = processing["verse"];
-          debug(poem) {                          // poem verse
-            writefln(
-              "* %s curly\n%s",
-              obj_cite_number,
-              an_object[an_object_key]
-            );
-          }
-          processing.remove("verse");
-          an_object["is"]                           = "verse";
-          auto comp_obj_location = node_construct.node_location_emitter(
-            content_non_header,
-            segment_anchor_tag_that_object_belongs_to,
-            obj_cite_number,
-            cntr,
-            heading_ptr-1,
-            an_object["is"]
-          );
-          auto substantive_obj_misc_tuple =
-            obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-          an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-          anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-          comp_obj_block                            = comp_obj_block.init;
-          comp_obj_block.use                        = "body";
-          comp_obj_block.is_of                      = "block";
-          comp_obj_block.is_a                       = "verse";
-          comp_obj_block.ocn                        = obj_cite_number;
-          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-          comp_obj_block.text                       = an_object["substantive"];
-          comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-          comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-          comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
-          the_document_body_section                 ~= comp_obj_block;
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-      }
-    } else if (type["tic_poem"] == TriState.on) {
-      if (auto m = line.matchFirst(rgx.block_tic_close)) { // tic_poem_close
-        an_object[an_object_key]="verse";
-        debug(poem) {                                       // poem (curly) close
-          writefln(
-            "* [poem tic] %s",
-            line
-          );
-        }
-        if (processing.length > 0) {
-          an_object[an_object_key] = processing["verse"];
-        }
-        if (an_object.length > 0) {
-          debug(poem) {                                     // poem (tic) close
-            writeln(__LINE__);
-            writeln(obj_cite_number, line);
-          }
-          processing.remove("verse");
-          an_object["is"]                           = "verse";
-          auto substantive_obj_misc_tuple =
-            obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-          an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-          anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-          comp_obj_block                            = comp_obj_block.init;
-          comp_obj_block.use                        = "body";
-          comp_obj_block.is_of                      = "block";
-          comp_obj_block.is_a                       = "verse";
-          comp_obj_block.ocn                        = obj_cite_number;
-          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-          comp_obj_block.text                       = an_object["substantive"];
-          comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-          comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-          comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
-          the_document_body_section                 ~= comp_obj_block;
-          obj_cite_number_poem["end"]               = obj_cite_number.to!string;
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-        type["blocks"] = TriState.closing;
-        type["poem"] = TriState.closing;
-        type["tic_poem"] = TriState.off;
-      } else {
-        processing["verse"] ~= line ~= "\n";
-        if (type["verse_new"] == State.on) {
-          obj_cite_number =
-            ocn_emit(type["ocn_status"]);
-          type["verse_new"] = State.off;
-        } else if (line.matchFirst(rgx.newline_eol_delimiter_only)) {
-          processing["verse"] = processing["verse"].stripRight;
-          type["verse_new"] = State.on;
-          verse_line = TriState.off;
-        }
-        if (type["verse_new"] == State.on) {
-          verse_line=1;
-          an_object[an_object_key] = processing["verse"];
-          debug(poem) {                            // poem (tic) close
-            writefln(
-              "* %s tic\n%s",
-              obj_cite_number,
-              an_object[an_object_key]
-            );
-          }
-          processing.remove("verse");
-          an_object["is"]                           = "verse";
-          auto comp_obj_location =
-            node_construct.node_location_emitter(
-              content_non_header,
-              segment_anchor_tag_that_object_belongs_to,
-              obj_cite_number,
-              cntr,
-              heading_ptr-1,
-              an_object["is"]
-            );
-          auto substantive_obj_misc_tuple =
-            obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-          an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-          anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-          comp_obj_block                            = comp_obj_block.init;
-          comp_obj_block.use                        = "body";
-          comp_obj_block.is_of                      = "block";
-          comp_obj_block.is_a                       = "verse";
-          comp_obj_block.ocn                        = obj_cite_number;
-          comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-          comp_obj_block.text                       = an_object["substantive"];
-          comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-          comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-          comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
-          the_document_body_section                 ~= comp_obj_block;
-          object_reset(an_object);
-          processing.remove("verse");
-          ++cntr;
-        }
-      }
-    }
-  }
-  void _code_block_(L,O,T)(
-    return ref L line,
-    return ref O an_object,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)      == char[]));
-      static assert(is(typeof(an_object) == string[string]));
-      static assert(is(typeof(type)      == int[string]));
-    }
-    auto rgx = Rgx();
-    if (type["curly_code"] == TriState.on) {
-      if (line.matchFirst(rgx.block_curly_code_close)) {
-        debug(code) {                                    // code (curly) close
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key]
-          .replaceFirst(rgx.newline_eol_delimiter_only, "")
-          .stripRight;
-        type["blocks"] = TriState.closing;
-        type["code"] = TriState.closing;
-        type["curly_code"] = TriState.off;
-      } else {
-        debug(code) {                                    // code (curly) line
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";        // code (curly) line
-      }
-    } else if (type["tic_code"] == TriState.on) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(code) {                                    // code (tic) close
-          writeln(line);
-        }
-        an_object[an_object_key] = an_object[an_object_key]
-          .replaceFirst(rgx.newline_eol_delimiter_only, "")
-          .stripRight;
-        type["blocks"] = TriState.closing;
-        type["code"] = TriState.closing;
-        type["tic_code"] = TriState.off;
-      } else {
-        debug(code) {                                    // code (tic) line
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";        // code (tic) line
-      }
-    }
-  }
-  void _table_block_(L,O,T,Ma)(
-    return ref L line,
-    return ref O an_object,
-    return ref T type,
-    return ref Ma dochead_make_aa
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)      == char[]));
-      static assert(is(typeof(an_object) == string[string]));
-      static assert(is(typeof(type)      == int[string]));
-    }
-    auto rgx = Rgx();
-    if (type["curly_table"] == TriState.on) {
-      if (line.matchFirst(rgx.block_curly_table_close)) {
-        debug(table) {                           // table (curly) close
-          writeln(line);
-        }
-        type["blocks"] = TriState.closing;
-        type["table"] = TriState.closing;
-        type["curly_table"] = TriState.off;
-      } else {
-        debug(table) {                           // table
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";           // build table array (or string)
-      }
-    } else if (type["curly_table_special_markup"] == TriState.on) {
-      if (line.empty) {
-        type["blocks"]                     = TriState.off;
-        type["table"]                      = TriState.off;
-        type["curly_table_special_markup"] = TriState.off;
-        _table_closed_make_special_notation_table_(
-          line,
-          an_object,
-          the_document_body_section,
-          obj_cite_number,
-          comp_obj_heading,
-          cntr,
-          type,
-          dochead_make_aa
-        );
-      } else {
-        debug(table) {
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";
-      }
-    } else if (type["tic_table"] == TriState.on) {
-      if (line.matchFirst(rgx.block_tic_close)) {
-        debug(table) {                           // table (tic) close
-          writeln(line);
-        }
-        type["blocks"] = TriState.closing;
-        type["table"] = TriState.closing;
-        type["tic_table"] = TriState.off;
-      } else {
-        debug(table) {                           // table
-          writeln(line);
-        }
-        an_object[an_object_key] ~= line ~= "\n";           // build table array (or string)
-      }
-    }
-  }
-  final string biblio_tag_map(A)(A abr) {
-    debug(asserts) {
-      static assert(is(typeof(abr) == string));
-    }
-    auto btm = [
-      "au"                               : "author_raw",
-      "ed"                               : "editor_raw",
-      "ti"                               : "fulltitle",
-      "lng"                              : "language",
-      "jo"                               : "journal",
-      "vol"                              : "volume",
-      "edn"                              : "edition",
-      "yr"                               : "year",
-      "pl"                               : "place",
-      "pb"                               : "publisher",
-      "pub"                              : "publisher",
-      "pg"                               : "pages",
-      "pgs"                              : "pages",
-      "sn"                               : "short_name"
-    ];
-    return btm[abr];
-  }
-  void _biblio_block_(
-    char[]                 line,
-    return ref int[string] type,
-    return ref int         bib_entry,
-    return ref string      biblio_entry_str_json,
-    return ref string[]    biblio_arr_json
-  ) {
-    mixin SiSUbiblio;
-    auto jsn = BibJsnStr();
-    auto rgx = Rgx();
-    if (line.matchFirst(rgx.heading_biblio)) {
-      type["biblio_section"] = TriState.on;
-      type["blurb_section"] = State.off;
-      type["glossary_section"] = State.off;
-    }
-    if (line.empty) {
-      debug {
-        debug(biblioblock) {
-          writeln("---");
-        }
-        debug(biblioblockinclude) {
-          writeln(biblio_entry_str_json.length);
-        }
-      }
-      if ((bib_entry == State.off)
-      && (biblio_entry_str_json.empty)) {
-        bib_entry = State.on;
-        biblio_entry_str_json = jsn.biblio_entry_tags_jsonstr;
-      } else if (!(biblio_entry_str_json.empty)) {
-        bib_entry = State.off;
-        if (!(biblio_entry_str_json == jsn.biblio_entry_tags_jsonstr)) {
-          auto biblio_entry = parseJSON(biblio_entry_str_json);
-          if (biblio_entry["fulltitle"].str.empty) {
-            writeln("check problem entry (Title missing): ", biblio_entry_str_json);
-          } else if ((biblio_entry["author_raw"].str.empty) && (biblio_entry["editor_raw"].str.empty)) {
-            writeln("check problem entry (No author and no editor): ", biblio_entry_str_json);
-          } else {
-            biblio_arr_json ~= biblio_entry_str_json;
-          }
-          biblio_entry_str_json = jsn.biblio_entry_tags_jsonstr;
-        }
-      } else { // CHECK ERROR
-        writeln("?? 2. ERROR ", biblio_entry_str_json, "??");
-        biblio_entry_str_json = "";
-      }
-    } else if (line.matchFirst(rgx.biblio_tags)) {
-      debug(biblioblock) {
-        writeln(line);
-      }
-      auto bt = line.match(rgx.biblio_tags);
-      bib_entry = State.off;
-      st = bt.captures[1].to!string;
-      auto header_tag_value=(bt.captures[2]).to!string;
-      JSONValue j = parseJSON(biblio_entry_str_json);
-      biblio_tag_name = (st.match(rgx.biblio_abbreviations))
-        ? (biblio_tag_map(st))
-        : st;
-      j.object[biblio_tag_name] = header_tag_value;
-      debug(bibliounsortedcheckduplicates) {
-        writeln(biblio_tag_name, ": ", header_tag_value);
-        writeln("--");
-      }
-      switch (biblio_tag_name) {
-      case "author_raw": // author_arr author (fn sn)
-        j["author_arr"] =
-         header_tag_value.split(rgx.arr_delimiter);
-        string tmp;
-        biblioAuthorLoop:
-        foreach (au; j["author_arr"].array) {
-          if (auto x = au.str.match(rgx.name_delimiter)) {
-            tmp ~= x.captures[2] ~ " " ~ x.captures[1] ~ ", ";
-          } else {
-            tmp ~= au.str;
-          }
-        }
-        tmp = (tmp).replace(rgx.trailing_comma, "");
-        j["author"].str = tmp;
-        goto default;
-      case "editor_raw": // editor_arr editor (fn sn)
-        j["editor_arr"] =
-          header_tag_value.split(rgx.arr_delimiter);
-        string tmp;
-        biblioEditorLoop:
-        foreach (ed; j["editor_arr"].array) {
-          if (auto x = ed.str.match(rgx.name_delimiter)) {
-            tmp ~= x.captures[2] ~ " " ~ x.captures[1] ~ ", ";
-          } else {
-            tmp ~= ed.str;
-          }
-        }
-        tmp = (tmp).replace(rgx.trailing_comma, "");
-        j["editor"].str = tmp;
-        goto default;
-      case "fulltitle": // title & subtitle
-        goto default;
-      default:
-        break;
-      }
-      auto s = j.toString();
-      debug(biblio1) {
-        writefln(
-          "* %s: %s\n%s",
-          biblio_tag_name,
-          biblio_tag_entry,
-          j[biblio_tag_name]
-        );
-      }
-      if (line.match(rgx.comment)) {
-        writeln("ERROR", line, "COMMENT");
-        writeln("ERROR", s, "%%");
-      }
-      if (!(match(line, rgx.comment))) {
-        debug(biblioblockinclude) {
-          writeln(line);
-        }
-        biblio_entry_str_json = s;
-      } else {
-        biblio_entry_str_json = "";
-      }
-      header_tag_value="";
-    }
-  }
-  void _table_closed_make_special_notation_table_(
-    char[]                           line,
-    return ref string[string]        an_object,
-    return ref ObjGenericComposite[] the_document_body_section,
-    return ref int                   obj_cite_number,
-    return ref ObjGenericComposite   _comp_obj_heading,
-    return ref int                   cntr,
-    return ref int[string]           type,
-    string[string][string]           dochead_make_aa,
-  ) {
-      comp_obj_block = comp_obj_block.init;
-      obj_cite_number =
-        ocn_emit(type["ocn_status"]);
-      auto comp_obj_location =
-        node_construct.node_location_emitter(
-          content_non_header,
-          segment_anchor_tag_that_object_belongs_to,
-          obj_cite_number,
-          cntr,
-          heading_ptr-1,
-          "table"
-        );
-      an_object["is"] = "table";
-      auto substantive_obj_misc_tuple =
-        obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, "body_nugget", dochead_make_aa);
-      an_object["substantive"]         = substantive_obj_misc_tuple[sObj.content];
-      comp_obj_block.ocn               = obj_cite_number;
-      comp_obj_block.obj_cite_number   = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-      comp_obj_block                   = table_instructions(comp_obj_block, an_object["table_head"]);
-      comp_obj_block                   = table_substantive_munge_special(comp_obj_block, an_object["substantive"]);
-      the_document_body_section        ~= comp_obj_block;
-      object_reset(an_object);
-      processing.remove("verse");
-      ++cntr;
-  }
-  void _block_flag_line_empty_(B)(
-    B                                   bookindex_extract_hash,
-    char[]                              line,
-    return ref string[string]           an_object,
-    return ref ObjGenericComposite[]    the_document_body_section,
-    return ref string[][string][string] bookindex_unordered_hashes,
-    return ref int                      obj_cite_number,
-    return ref ObjGenericComposite      _comp_obj_heading,
-    return ref int                      cntr,
-    return ref int[string]              type,
-    string[string]                      obj_cite_number_poem,
-    string[string][string]              dochead_make_aa,
-  ) {
-    assert(
-      line.empty,
-      "\nline should be empty:\n  \""
-      ~ line ~ "\""
-    );
-    assert(
-      (type["blocks"] == TriState.closing),
-      "code block status: closed"
-    );
-    assertions_flag_types_block_status_none_or_closed(type);
-    if (type["quote"] == TriState.closing) {
-      obj_cite_number =
-        ocn_emit(type["ocn_status"]);
-      an_object["bookindex_nugget"] =
-        ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-      bookindex_unordered_hashes =
-        bookindex_extract_hash.bookindex_nugget_hash(
-          an_object["bookindex_nugget"],
-          obj_cite_number,
-          segment_anchor_tag_that_object_belongs_to
-        );
-      an_object["is"] = "quote";
-      auto comp_obj_location =
-        node_construct.node_location_emitter(
-          content_non_header,
-          segment_anchor_tag_that_object_belongs_to,
-          obj_cite_number,
-          cntr,
-          heading_ptr-1,
-          an_object["is"]
-        );
-      auto substantive_obj_misc_tuple =
-        obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-      an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-      anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-      comp_obj_block                            = comp_obj_block.init;
-      comp_obj_block.use                        = "body";
-      comp_obj_block.is_of                      = "block";
-      comp_obj_block.is_a                       = "quote";
-      comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-      comp_obj_block.text                       = an_object["substantive"];
-      comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-      comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-      comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
-      the_document_body_section                 ~= comp_obj_block;
-      type["blocks"]                            = TriState.off;
-      type["quote"]                             = TriState.off;
-      object_reset(an_object);
-      processing.remove("verse");
-      ++cntr;
-    } else if (type["group"] == TriState.closing) {
-      obj_cite_number =
-        ocn_emit(type["ocn_status"]);
-      an_object["bookindex_nugget"] =
-        ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-      bookindex_unordered_hashes =
-        bookindex_extract_hash.bookindex_nugget_hash(
-          an_object["bookindex_nugget"],
-          obj_cite_number,
-          segment_anchor_tag_that_object_belongs_to
-        );
-      an_object["is"] = "group";
-      auto comp_obj_location =
-        node_construct.node_location_emitter(
-          content_non_header,
-          segment_anchor_tag_that_object_belongs_to,
-          obj_cite_number,
-          cntr,
-          heading_ptr-1,
-          an_object["is"]
-        );
-      auto substantive_obj_misc_tuple =
-        obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-      an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-      anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-      comp_obj_block                            = comp_obj_block.init;
-      comp_obj_block.use                        = "body";
-      comp_obj_block.is_of                      = "block";
-      comp_obj_block.is_a                       = "group";
-      comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-      comp_obj_block.text                       = an_object["substantive"];
-      comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-      comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-      comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
-      the_document_body_section                 ~= comp_obj_block;
-      type["blocks"]                            = TriState.off;
-      type["group"]                             = TriState.off;
-      object_reset(an_object);
-      processing.remove("verse");
-      ++cntr;
-    } else if (type["block"] == TriState.closing) {
-      obj_cite_number = ocn_emit(type["ocn_status"]);
-      an_object["bookindex_nugget"] =
-        ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-      bookindex_unordered_hashes =
-        bookindex_extract_hash.bookindex_nugget_hash(
-          an_object["bookindex_nugget"],
-          obj_cite_number,
-          segment_anchor_tag_that_object_belongs_to
-        );
-      an_object["is"] = "block";
-      auto comp_obj_location =
-        node_construct.node_location_emitter(
-          content_non_header,
-          segment_anchor_tag_that_object_belongs_to,
-          obj_cite_number,
-          cntr,
-          heading_ptr-1,
-          an_object["is"]
-        );
-      auto substantive_obj_misc_tuple =
-        obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-      an_object["substantive"]                  = substantive_obj_misc_tuple[sObj.content];
-      comp_obj_block                            = comp_obj_block.init;
-      comp_obj_block.use                        = "body";
-      comp_obj_block.is_of                      = "block";
-      comp_obj_block.is_a                       = "block";
-      comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-      comp_obj_block.text                       = an_object["substantive"];
-      comp_obj_block.inline_notes_reg           = substantive_obj_misc_tuple[sObj.notes_reg];
-      comp_obj_block.inline_notes_star          = substantive_obj_misc_tuple[sObj.notes_star];
-      comp_obj_block.inline_links               = substantive_obj_misc_tuple[sObj.links];
-      the_document_body_section                 ~= comp_obj_block;
-      type["blocks"]                            = TriState.off;
-      type["block"]                             = TriState.off;
-      object_reset(an_object);
-      processing.remove("verse");
-      ++cntr;
-    } else if (type["poem"] == TriState.closing) {
-      an_object["bookindex_nugget"] =
-        ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-      bookindex_unordered_hashes =
-        bookindex_extract_hash.bookindex_nugget_hash(
-          an_object["bookindex_nugget"],
-          obj_cite_number,
-          segment_anchor_tag_that_object_belongs_to
-        );
-      an_object["is"]                           = "verse";
-      auto comp_obj_location =
-        node_construct.node_location_emitter(
-          content_non_header,
-          segment_anchor_tag_that_object_belongs_to,
-          obj_cite_number,
-          cntr,
-          heading_ptr-1,
-          an_object["is"]
-        );
-      comp_obj_poem_ocn                         = comp_obj_poem_ocn.init;
-      comp_obj_poem_ocn.use                     = "body";
-      comp_obj_poem_ocn.is_of                   = "block";
-      comp_obj_poem_ocn.is_a                    = "poem";
-      comp_obj_poem_ocn.ocn                     = obj_cite_number;
-      comp_obj_poem_ocn.obj_cite_number         = (obj_cite_number_poem["start"], obj_cite_number_poem["end"]);
-      comp_obj_poem_ocn.text                    = "";
-      the_document_body_section                 ~= comp_obj_poem_ocn;
-      type["blocks"]                            = TriState.off;
-      type["poem"]                              = TriState.off;
-      object_reset(an_object);
-      processing.remove("verse");
-    } else if (type["code"] == TriState.closing) {
-      obj_cite_number =
-        ocn_emit(type["ocn_status"]);
-      an_object["bookindex_nugget"] =
-        ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-      bookindex_unordered_hashes =
-        bookindex_extract_hash.bookindex_nugget_hash(
-          an_object["bookindex_nugget"],
-          obj_cite_number,
-          segment_anchor_tag_that_object_belongs_to
-        );
-      an_object["is"] = "code";
-      auto comp_obj_location =
-        node_construct.node_location_emitter(
-          content_non_header,
-          segment_anchor_tag_that_object_belongs_to,
-          obj_cite_number,
-          cntr,
-          heading_ptr-1,
-          an_object["is"]
-        );
-      auto substantive_obj_misc_tuple =
-        obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-      an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-      anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
-      comp_obj_code                             = comp_obj_code.init;
-      comp_obj_code.use                         = "body";
-      comp_obj_code.is_of                       = "block";
-      comp_obj_code.is_a                        = "code";
-      comp_obj_code.ocn                         = obj_cite_number;
-      comp_obj_code.obj_cite_number             = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-      comp_obj_code.text                        = an_object["substantive"];
-      comp_obj_code.inline_notes_reg            = substantive_obj_misc_tuple[sObj.notes_reg];
-      comp_obj_code.inline_notes_star           = substantive_obj_misc_tuple[sObj.notes_star];
-      comp_obj_code.inline_links                = substantive_obj_misc_tuple[sObj.links];
-      the_document_body_section                 ~= comp_obj_code;
-      type["blocks"]                            = TriState.off;
-      type["code"]                              = TriState.off;
-      object_reset(an_object);
-      processing.remove("verse");
-      ++cntr;
-    } else if (type["table"] == TriState.closing) {
-      comp_obj_block = comp_obj_block.init;
-      obj_cite_number =
-        ocn_emit(type["ocn_status"]);
-      an_object["bookindex_nugget"] =
-        ("bookindex_nugget" in an_object) ? an_object["bookindex_nugget"] : "";
-      bookindex_unordered_hashes =
-        bookindex_extract_hash.bookindex_nugget_hash(
-          an_object["bookindex_nugget"],
-          obj_cite_number,
-          segment_anchor_tag_that_object_belongs_to
-        );
-      an_object["is"] = "table";
-      auto comp_obj_location =
-        node_construct.node_location_emitter(
-          content_non_header,
-          segment_anchor_tag_that_object_belongs_to,
-          obj_cite_number,
-          cntr,
-          heading_ptr-1,
-          an_object["is"]
-        );
-      auto substantive_obj_misc_tuple =
-        obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, dochead_make_aa);
-      an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-      comp_obj_block                            = comp_obj_block.init;
-      comp_obj_block.ocn                        = obj_cite_number;
-      comp_obj_block.obj_cite_number            = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-      comp_obj_block = table_instructions(comp_obj_block, an_object["table_head"]);
-      comp_obj_block = table_substantive_munge(comp_obj_block, an_object["substantive"]);
-      the_document_body_section                 ~= comp_obj_block;
-      type["blocks"]                            = TriState.off;
-      type["table"]                             = TriState.off;
-      object_reset(an_object);
-      processing.remove("verse");
-      ++cntr;
-    }
-  }
-  auto _book_index_(L,I,O,T,B)(
-    L      line,
-    return ref I  book_idx_tmp,
-    return ref O  an_object,
-    return ref T  type,
-    B             opt_action,
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)            == char[]));
-      static assert(is(typeof(book_idx_tmp)    == string));
-      static assert(is(typeof(an_object)       == string[string]));
-      static assert(is(typeof(type)            == int[string]));
-      static assert(is(typeof(opt_action)      == bool[string]));
-    }
-    auto rgx = Rgx();
-    if (auto m = line.match(rgx.book_index)) {
-      /+ match book_index +/
-      debug(bookindexmatch) {                       // book index
-        writefln(
-          "* [bookindex] %s\n",
-          m.captures[1].to!string,
-        );
-      }
-      an_object["bookindex_nugget"] = m.captures[1].to!string;
-    } else if (auto m = line.match(rgx.book_index_open))  {
-      /+ match open book_index +/
-      type["book_index"] = State.on;
-      if (opt_action["backmatter"] && opt_action["section_bookindex"]) {
-        book_idx_tmp = m.captures[1].to!string;
-        debug(bookindexmatch) {                       // book index
-          writefln(
-            "* [bookindex] %s\n",
-            book_idx_tmp,
-          );
-        }
-      }
-    } else if (type["book_index"] == State.on )  {
-      /+ book_index flag set +/
-      if (auto m = line.match(rgx.book_index_close))  {
-        type["book_index"] = State.off;
-        if (opt_action["backmatter"]
-        && opt_action["section_bookindex"]) {
-          an_object["bookindex_nugget"] = book_idx_tmp ~ m.captures[1].to!string;
-          debug(bookindexmatch) {                     // book index
-            writefln(
-              "* [bookindex] %s\n",
-              book_idx_tmp,
-            );
-          }
-        }
-        book_idx_tmp = "";
-      } else {
-        if (opt_action["backmatter"]
-        && opt_action["section_bookindex"]) {
-          book_idx_tmp ~= line;
-        }
-      }
-    }
-  }
-  auto _heading_found_(L,X,H,R,T)(
-    L     line,
-    X     dochead_make_identify_unmarked_headings,
-    return ref H heading_match_str,
-    return ref R heading_match_rgx,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)                                    == char[]));
-      static assert(is(typeof(dochead_make_identify_unmarked_headings) == string));
-      static assert(is(typeof(heading_match_str)                       == string[string]));
-      static assert(is(typeof(heading_match_rgx)                       == Regex!(char)[string]));
-      static assert(is(typeof(type)                                    == int[string]));
-    }
-    auto rgx = Rgx();
-    if ((dochead_make_identify_unmarked_headings.length > 2)
-    && (type["make_headings"] == State.off)) {
-      /+ headings found +/
-      debug(headingsfound) {
-        writeln(dochead_make_identify_unmarked_headings);
-      }
-      char[][] make_headings_spl =
-        (cast(char[]) dochead_make_identify_unmarked_headings)
-          .split(rgx.make_heading_delimiter);
-      debug(headingsfound) {
-        writeln(make_headings_spl.length);
-        writeln(make_headings_spl);
-      }
-      switch (make_headings_spl.length) {
-      case 7 :
-        if (!empty(make_headings_spl[6])) {
-          heading_match_str["h_4"] =
-            "^(" ~ make_headings_spl[6].to!string ~ ")";
-          heading_match_rgx["h_4"] =
-            regex(heading_match_str["h_4"]);
-        }
-        goto case;
-      case 6 :
-        if (!empty(make_headings_spl[5])) {
-          heading_match_str["h_3"] =
-            "^(" ~ make_headings_spl[5].to!string ~ ")";
-          heading_match_rgx["h_3"] =
-            regex(heading_match_str["h_3"]);
-        }
-        goto case;
-      case 5 :
-        if (!empty(make_headings_spl[4])) {
-          heading_match_str["h_2"] =
-            "^(" ~ make_headings_spl[4].to!string ~ ")";
-          heading_match_rgx["h_2"] =
-            regex(heading_match_str["h_2"]);
-        }
-        goto case;
-      case 4 :
-        if (!empty(make_headings_spl[3])) {
-          heading_match_str["h_1"] =
-            "^(" ~ make_headings_spl[3].to!string ~ ")";
-          heading_match_rgx["h_1"] =
-            regex(heading_match_str["h_1"]);
-        }
-        goto case;
-      case 3 :
-        if (!empty(make_headings_spl[2])) {
-          heading_match_str["h_D"] =
-            "^(" ~ make_headings_spl[2].to!string ~ ")";
-          heading_match_rgx["h_D"] =
-            regex(heading_match_str["h_D"]);
-        }
-        goto case;
-      case 2 :
-        if (!empty(make_headings_spl[1])) {
-          heading_match_str["h_C"] =
-            "^(" ~ make_headings_spl[1].to!string ~ ")";
-          heading_match_rgx["h_C"] =
-            regex(heading_match_str["h_C"]);
-        }
-        goto case;
-      case 1 :
-        if (!empty(make_headings_spl[0])) {
-          heading_match_str["h_B"] =
-            "^(" ~ make_headings_spl[0].to!string ~ ")";
-          heading_match_rgx["h_B"] =
-            regex(heading_match_str["h_B"]);
-        }
-        break;
-      default:
-        break;
-      }
-      type["make_headings"] = State.on;
-    }
-  }
-  auto _heading_make_set_(L,C,R,T)(
-    L     line,
-    C     line_occur,
-    return ref R heading_match_rgx,
-    return ref T type
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)              == char[]));
-      static assert(is(typeof(line_occur)        == int[string]));
-      static assert(is(typeof(heading_match_rgx) == Regex!(char)[string]));
-      static assert(is(typeof(type)              == int[string]));
-    }
-    if ((type["make_headings"] == State.on)
-    && ((line_occur["para"] == State.off)
-    && (line_occur["heading"] == State.off))
-    && ((type["para"] == State.off)
-    && (type["heading"] == State.off))) {
-      /+ heading make set +/
-      if (line.matchFirst(heading_match_rgx["h_B"])) {
-        line = "B~ " ~ line;
-        debug(headingsfound) {
-          writeln(line);
-        }
-      }
-      if (line.matchFirst(heading_match_rgx["h_C"])) {
-        line = "C~ " ~ line;
-        debug(headingsfound) {
-          writeln(line);
-        }
-      }
-      if (line.matchFirst(heading_match_rgx["h_D"])) {
-        line = "D~ " ~ line;
-        debug(headingsfound) {
-          writeln(line);
-        }
-      }
-      if (line.matchFirst(heading_match_rgx["h_1"])) {
-        line = "1~ " ~ line;
-        debug(headingsfound) {
-          writeln(line);
-        }
-      }
-      if (line.matchFirst(heading_match_rgx["h_2"])) {
-        line = "2~ " ~ line;
-        debug(headingsfound) {
-          writeln(line);
-        }
-      }
-      if (line.matchFirst(heading_match_rgx["h_3"])) {
-        line = "3~ " ~ line;
-        debug(headingsfound) {
-          writeln(line);
-        }
-      }
-      if (line.matchFirst(heading_match_rgx["h_4"])) {
-        line = "4~ " ~ line;
-        debug(headingsfound) {
-          writeln(line);
-        }
-      }
-    }
-    return line;
-  }
-  auto _heading_matched_(L,C,O,K,Lv,Lc,T,Me)(
-    return ref L  line,
-    return ref C  line_occur,
-    return ref O  an_object,
-    return ref K  an_object_key,
-    return ref Lv lv,
-    return ref Lc collapsed_lev,
-    return ref T  type,
-    return ref Me dochead_meta_aa,
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)            == char[]));
-      static assert(is(typeof(line_occur)      == int[string]));
-      static assert(is(typeof(an_object)       == string[string]));
-      static assert(is(typeof(an_object_key)   == string));
-      static assert(is(typeof(lv)              == int[string]));
-      static assert(is(typeof(collapsed_lev)   == int[string]));
-      static assert(is(typeof(type)            == int[string]));
-      static assert(is(typeof(dochead_meta_aa) == string[string][string]));
-    }
-    auto rgx = Rgx();
-    if (auto m = line.match(rgx.heading)) {
-      /+ heading match +/
-      type["heading"] = State.on;
-      if (line.match(rgx.heading_seg_and_above)) {
-        type["biblio_section"] = State.off;
-        type["glossary_section"] = State.off;
-        type["blurb_section"] = State.off;
-      }
-      type["para"] = State.off;
-      ++line_occur["heading"];
-      an_object[an_object_key] ~= line ~= "\n";
-      an_object["lev"] ~= m.captures[1];
-      assertions_doc_structure(an_object, lv); // includes most of the logic for collapsed levels
-      switch (an_object["lev"]) {
-      case "A":
-        an_object[an_object_key]=(an_object[an_object_key])
-          .replaceFirst(rgx.variable_doc_title,
-            (dochead_meta_aa["title"]["full"] ~ ","))
-          .replaceFirst(rgx.variable_doc_author,
-            dochead_meta_aa["creator"]["author"]);
-        collapsed_lev["h0"] = 0;
-        an_object["lev_collapsed_number"] =
-          collapsed_lev["h0"].to!string;
-        lv["lv"] = DocStructMarkupHeading.h_sect_A;
-        ++lv["h0"];
-        lv["h1"] = State.off;
-        lv["h2"] = State.off;
-        lv["h3"] = State.off;
-        lv["h4"] = State.off;
-        lv["h5"] = State.off;
-        lv["h6"] = State.off;
-        lv["h7"] = State.off;
-        goto default;
-      case "B":
-        collapsed_lev["h1"] = collapsed_lev["h0"] + 1;
-        an_object["lev_collapsed_number"] =
-          collapsed_lev["h1"].to!string;
-        lv["lv"] = DocStructMarkupHeading.h_sect_B;
-        ++lv["h1"];
-        lv["h2"] = State.off;
-        lv["h3"] = State.off;
-        lv["h4"] = State.off;
-        lv["h5"] = State.off;
-        lv["h6"] = State.off;
-        lv["h7"] = State.off;
-        goto default;
-      case "C":
-        collapsed_lev["h2"] = collapsed_lev["h1"] + 1;
-        an_object["lev_collapsed_number"] =
-          collapsed_lev["h2"].to!string;
-        lv["lv"] = DocStructMarkupHeading.h_sect_C;
-        ++lv["h2"];
-        lv["h3"] = State.off;
-        lv["h4"] = State.off;
-        lv["h5"] = State.off;
-        lv["h6"] = State.off;
-        lv["h7"] = State.off;
-        goto default;
-      case "D":
-        collapsed_lev["h3"] = collapsed_lev["h2"] + 1;
-        an_object["lev_collapsed_number"] =
-          collapsed_lev["h3"].to!string;
-        lv["lv"] = DocStructMarkupHeading.h_sect_D;
-        ++lv["h3"];
-        lv["h4"] = State.off;
-        lv["h5"] = State.off;
-        lv["h6"] = State.off;
-        lv["h7"] = State.off;
-        goto default;
-      case "1":
-        if (lv["h3"] > State.off) {
-          collapsed_lev["h4"] = collapsed_lev["h3"] + 1;
-        } else if (lv["h2"] > State.off) {
-          collapsed_lev["h4"] = collapsed_lev["h2"] + 1;
-        } else if (lv["h1"] > State.off) {
-          collapsed_lev["h4"] = collapsed_lev["h1"] + 1;
-        } else if (lv["h0"] > State.off) {
-          collapsed_lev["h4"] = collapsed_lev["h0"] + 1;
-        }
-        an_object["lev_collapsed_number"] =
-          collapsed_lev["h4"].to!string;
-        lv["lv"] = DocStructMarkupHeading.h_text_1;
-        ++lv["h4"];
-        lv["h5"] = State.off;
-        lv["h6"] = State.off;
-        lv["h7"] = State.off;
-        goto default;
-      case "2":
-        if (lv["h5"] > State.off) {
-          an_object["lev_collapsed_number"] =
-            collapsed_lev["h5"].to!string;
-        } else if (lv["h4"] > State.off) {
-          collapsed_lev["h5"] = collapsed_lev["h4"] + 1;
-          an_object["lev_collapsed_number"] =
-            collapsed_lev["h5"].to!string;
-        }
-        lv["lv"] = DocStructMarkupHeading.h_text_2;
-        ++lv["h5"];
-        lv["h6"] = State.off;
-        lv["h7"] = State.off;
-        goto default;
-      case "3":
-        if (lv["h6"] > State.off) {
-          an_object["lev_collapsed_number"] =
-            collapsed_lev["h6"].to!string;
-        } else if (lv["h5"] > State.off) {
-          collapsed_lev["h6"] = collapsed_lev["h5"] + 1;
-          an_object["lev_collapsed_number"] =
-            collapsed_lev["h6"].to!string;
-        }
-        lv["lv"] = DocStructMarkupHeading.h_text_3;
-        ++lv["h6"];
-        lv["h7"] = State.off;
-        goto default;
-      case "4":
-        if (lv["h7"] > State.off) {
-          an_object["lev_collapsed_number"] =
-            collapsed_lev["h7"].to!string;
-        } else if (lv["h6"] > State.off) {
-          collapsed_lev["h7"] = collapsed_lev["h6"] + 1;
-          an_object["lev_collapsed_number"] =
-            collapsed_lev["h7"].to!string;
-        }
-        lv["lv"] = DocStructMarkupHeading.h_text_4;
-        ++lv["h7"];
-        goto default;
-      default:
-        an_object["lev_markup_number"] = lv["lv"].to!string;
-      }
-      debug(heading) {                         // heading
-        writeln(line.strip);
-      }
-    }
-  }
-  void _para_match_(L,O,K,I,B,T,C)(
-    return ref L  line,
-    return ref O  an_object,
-    return ref K  an_object_key,
-    return ref I  indent,
-    return ref B  bullet,
-    return ref T  type,
-    return ref C  line_occur,
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(line)          == char[]));
-      static assert(is(typeof(an_object)     == string[string]));
-      static assert(is(typeof(an_object_key) == string));
-      static assert(is(typeof(indent)        == int[string]));
-      static assert(is(typeof(bullet)        == bool));
-      static assert(is(typeof(type)          == int[string]));
-      static assert(is(typeof(line_occur)    == int[string]));
-    }
-    auto rgx = Rgx();
-    if (line_occur["para"] == State.off) {
-      line = font_faces_line(line);
-      /+ para matches +/
-      type["para"] = State.on;
-      an_object[an_object_key] ~= line;        // body_nugget
-      indent=[
-        "hang_position" : 0,
-        "base_position" : 0,
-      ];
-      bullet = false;
-      if (auto m = line.matchFirst(rgx.para_indent)) {
-        debug(paraindent) {                    // para indent
-          writeln(line);
-        }
-        indent["hang_position"] = (m.captures[1]).to!int;
-        indent["base_position"] = 0;
-      } else if (line.matchFirst(rgx.para_bullet)) {
-        debug(parabullet) {                    // para bullet
-          writeln(line);
-        }
-        bullet = true;
-      } else if (auto m = line.matchFirst(rgx.para_indent_hang)) {
-        debug(paraindenthang) {                // para indent hang
-          writeln(line);
-        }
-        indent=[
-          "hang_position" : (m.captures[1]).to!int,
-          "base_position" : (m.captures[2]).to!int,
-        ];
-      } else if (auto m = line.matchFirst(rgx.para_bullet_indent)) {
-        debug(parabulletindent) {              // para bullet indent
-          writeln(line);
-        }
-        indent=[
-          "hang_position" : (m.captures[1]).to!int,
-          "base_position" : 0,
-        ];
-        bullet = true;
-      }
-      ++line_occur["para"];
-    }
-  }
-  auto font_faces_line(T)(
-    return ref T  textline,
-  ) {
-    auto rgx = Rgx();
-    if (textline.match(rgx.inline_faces_line)) {
-      textline = (textline)
-        .replaceFirst(rgx.inline_emphasis_line,   ("*{$1}*$2"))
-        .replaceFirst(rgx.inline_bold_line,       ("!{$1}!$2"))
-        .replaceFirst(rgx.inline_underscore_line, ("_{$1}_$2"))
-        .replaceFirst(rgx.inline_italics_line,    ("/{$1}/$2"));
-    }
-    return textline;
-  }
-  auto table_instructions(O,H)(
-    return ref O  table_object,
-    return ref H  table_head,
-  ) {
-    auto rgx = Rgx();
-    table_object.use               = "body";
-    table_object.is_of             = "block";
-    table_object.is_a              = "table";
-    table_object.inline_notes_reg  = false;
-    table_object.inline_notes_star = false;
-    table_object.inline_links      = false;
-    if (auto m = table_head.matchFirst(rgx.table_head_instructions)) {
-      table_object.table_heading = ((m["c_heading"].length > 0) && (m["c_heading"] == "h")) ? true : false;
-      table_object.table_number_of_columns = ((m["c_num"].length > 0) && (m["c_num"].to!int > 0)) ? m["c_num"].to!int : 0; // double check, may be obsolete
-      foreach (cw; m["c_widths"].matchAll(rgx.table_col_widths)) {
-        auto x = cw.hit.matchFirst(rgx.table_col_widths_and_alignment);
-        table_object.table_column_widths ~= x["width"].to!int;
-        table_object.table_column_aligns ~= (x["align"].empty) ? "" : x["align"];
-      }
-    }
-    return table_object;
-  }
-  auto table_array_munge(O,T)(
-    return ref O  table_object,
-    return ref T  table_array,
-  ) {
-    auto rgx = Rgx();
-    auto mng = InlineMarkup();
-    string _table_substantive;
-    ulong col_num;
-    ulong col_num_;
-    ulong col_num_chk = 0;
-    foreach(idx_r, row; table_array) {
-      debug(table_dev) {
-        writeln("row ", idx_r);
-      }
-      col_num_ = 0;
-      if (col_num == 0
-      || col_num < row.length) {
-        col_num = row.length;
-      }
-      if (col_num_chk == 0) {
-        col_num_chk = col_num;
-      } else if (col_num == 1) {
-        debug(table_dev) {
-          writeln("table note: ");
-        }
-      } else if (col_num_chk != col_num) {
-        debug(table_dev) {
-          writeln("warning irregular number of columns: ", col_num_chk, " != ", col_num);
-        }
-      } else {
-      }
-      foreach(idx_c, col; row) {
-        debug(table_dev) {
-          write(idx_c, ", ");
-        }
-        col_num_ = idx_c;
-        _table_substantive ~= col ~ mng.tc_s;
-        if (idx_r == 0 && comp_obj_block.table_heading) {
-        } else if (idx_r == 1 && col.match(rgx.numeric_col)) {
-          if ((comp_obj_block.table_column_aligns.length > idx_c)
-          && (comp_obj_block.table_column_aligns[idx_c].matchFirst(rgx.table_col_align_match))) {
-            comp_obj_block.table_column_aligns[idx_c]
-              = comp_obj_block.table_column_aligns[idx_c];
-          } else if (comp_obj_block.table_column_aligns.length > idx_c) {
-            comp_obj_block.table_column_aligns[idx_c] = "r";
-          } else {
-            comp_obj_block.table_column_aligns ~= "r";
-          }
-        } else if (idx_r == 1) {
-          if ((comp_obj_block.table_column_aligns.length > idx_c)
-          && (comp_obj_block.table_column_aligns[idx_c].matchFirst(rgx.table_col_align_match))) {
-            comp_obj_block.table_column_aligns[idx_c]
-              = comp_obj_block.table_column_aligns[idx_c];
-          } else if (comp_obj_block.table_column_aligns.length > idx_c) {
-            comp_obj_block.table_column_aligns[idx_c] = "l";
-          } else {
-            comp_obj_block.table_column_aligns ~= "l";
-          }
-        }
-      }
-      debug(table_dev) {
-        writeln("");
-      }
-      if (col_num_chk > 0 && (col_num != col_num_chk)) {
-      } else if (col_num == col_num_chk){
-      } else {
-        col_num_chk = col_num;
-      }
-      _table_substantive = _table_substantive.replaceFirst(rgx.table_col_separator_nl, "\n");
-    }
-    if (comp_obj_block.table_number_of_columns != col_num) {
-      if (comp_obj_block.table_number_of_columns == 0) {
-        comp_obj_block.table_number_of_columns = (col_num).to!int;
-      } else {
-        debug(table_dev) {
-          writeln(comp_obj_block.table_number_of_columns, " != ", col_num);
-        }
-      }
-    }
-    if (table_object.table_number_of_columns == 0
-    && table_object.table_column_widths.length > 0) {
-        writeln(__LINE__, " ERROR");
-    }
-    if (table_object.table_number_of_columns > 0
-    && table_object.table_column_widths.length == 0) {
-      double col_w = (100.00 / table_object.table_number_of_columns);
-      foreach (i; 0..table_object.table_number_of_columns) {
-        table_object.table_column_widths ~= col_w;
-      }
-    } else if (table_object.table_number_of_columns
-    != table_object.table_column_widths.length) {
-      debug(table_dev) {
-        writeln(m.hit); // further logic required
-      }
-      if (table_object.table_number_of_columns > table_object.table_column_widths.length) {
-        double col_w = (100.00 - (table_object.table_column_widths).sum)
-          / (table_object.table_number_of_columns - table_object.table_column_widths.length);
-        foreach (i; 0..table_object.table_column_widths.length) {
-          table_object.table_column_widths ~= col_w;
-        }
-        foreach (i; 0..(table_object.table_number_of_columns - table_object.table_column_widths.length)) {
-          table_object.table_column_widths ~= col_w;
-        }
-      } else if (table_object.table_number_of_columns < table_object.table_column_widths.length) {
-        writeln(__LINE__, " warning, ERROR");
-      }
-    }
-    if (table_object.table_column_widths.sum > 101
-    || table_object.table_column_widths.sum < 95 ) {
-      writeln("sum: ", table_object.table_column_widths.sum,
-        ", array: ", table_object.table_column_widths,
-        ", cols: ", table_object.table_number_of_columns);
-      writeln(_table_substantive);
-    }
-    debug(table_res) {
-      writeln("aligns: ", comp_obj_block.table_column_aligns, "\n",
-        "no. of columns: ", comp_obj_block.table_number_of_columns, "\n",
-        "col widths: ", comp_obj_block.table_column_widths,
-          " sum: ", comp_obj_block.table_column_widths.sum, "\n",
-        _table_substantive);
-    }
-    comp_obj_block.text = _table_substantive;
-    return table_object;
-  }
-  auto table_array_munge_open_close(O,T)(
-    return ref O  table_object,
-    return ref T  table_array,
-  ) {
-    auto rgx = Rgx();
-    auto mng = InlineMarkup();
-    string _table_substantive;
-    foreach(row; table_array) {
-      foreach(col; row) {
-        _table_substantive ~= mng.tc_o ~ col ~ mng.tc_c;
-      }
-      _table_substantive ~= "\n";
-    }
-    debug(table_dev) {
-      writeln(_table_substantive);
-    }
-    comp_obj_block.text = _table_substantive;
-    return table_object;
-  }
-  auto table_substantive_munge(O,T)(
-    return ref O  table_object,
-    return ref T  table_substantive,
-  ) {
-    auto rgx = Rgx();
-    auto munge = ObjInlineMarkupMunge();
-    string[] _table_rows = (table_substantive).split(rgx.table_row_delimiter);
-    string[] _table_cols;
-    string[][] _table;
-    foreach(col; _table_rows) {
-      _table_cols = col.split(rgx.table_col_delimiter);
-      _table ~= _table_cols;
-    }
-    table_object = table_array_munge(table_object, _table);
-    return table_object;
-  }
-  auto table_substantive_munge_special(O,T)(
-    return ref O  table_object,
-    return ref T  table_substantive,
-  ) {
-    auto rgx = Rgx();
-    auto munge = ObjInlineMarkupMunge();
-    string[] _table_rows = (table_substantive).split(rgx.table_row_delimiter_special);
-    string[] _table_cols;
-    string[][] _table;
-    foreach(col; _table_rows) {
-      _table_cols = col.split(rgx.table_col_delimiter_special);
-      _table ~= _table_cols;
-    }
-    table_object = table_array_munge(table_object, _table);
-    return table_object;
-  }
-  /+ abstraction functions ↑ +/
-  /+ ↓ abstraction function emitters +/
-  struct OCNemitter {
-    int obj_cite_number, obj_cite_number_;
-    int ocn_emitter(int ocn_status_flag)
-    in { assert(ocn_status_flag <= 3); }
-    body {
-      if (ocn_status_flag == 3) {
-        obj_cite_number = obj_cite_number_ = 1;
-      } else {
-        obj_cite_number=(ocn_status_flag == 0)
-        ? ++obj_cite_number_
-        : 0;
-      }
-      assert(obj_cite_number >= 0);
-      return obj_cite_number;
-    }
-    invariant() {
-    }
-  }
-  /+ +/
-  struct ObjInlineMarkupMunge {
-    string[string] obj_txt;
-    int n_foot, n_foot_reg, n_foot_sp_asterisk, n_foot_sp_plus;
-    string asterisks_;
-    string obj_txt_out, tail, note;
-    auto rgx = Rgx();
-    auto mkup = InlineMarkup();
-    int stage_reset_note_numbers = true;
-    private auto initialize_note_numbers() {
-      n_foot = 0;
-      n_foot_reg = 0;
-      n_foot_sp_asterisk = 0;
-      n_foot_sp_plus = 0;
-    }
-    string url_links(Ot)(Ot obj_txt_in) {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-      auto mng = InlineMarkup();
-      obj_txt_in = obj_txt_in.replaceAll(rgx.inline_mono, (mng.mono ~ "{$1}" ~ mng.mono));
-      /+ url matched +/
-      if (obj_txt_in.match(rgx.inline_url_generic)) {
-        /+ link: naked url: http://url +/
-        if (obj_txt_in.match(rgx.inline_link_naked_url)) {
-          obj_txt_in = (obj_txt_in).replaceAll(
-              rgx.inline_link_naked_url,
-              ("$1"
-                ~ mkup.lnk_o ~ "$2" ~ mkup.lnk_c
-                ~  mkup.url_o ~ "$2" ~  mkup.url_c
-                ~ "$3")            // ("$1{ $2 }$2$3")
-            );
-        }
-        /+ link with helper for endnote including the url:
-             {~^ link which includes url as footnote }http://url
-           maps to:
-             { link which includes url as footnote }http://url~{ { http://url }http://url }~
-        +/
-        if (obj_txt_in.match(rgx.inline_link_endnote_url_helper)) {
-          obj_txt_in = (obj_txt_in).replaceAll(
-            rgx.inline_link_endnote_url_helper_punctuated,
-            (mkup.lnk_o ~ "$1" ~ mkup.lnk_c
-              ~ mkup.url_o ~ "$2" ~ mkup.url_c
-              ~ "~{ " ~ mkup.lnk_o ~ " $2 " ~ mkup.lnk_c
-              ~ mkup.url_o ~ "$2" ~ mkup.url_c
-              ~  " }~$3") // ("{ $1 }$2~{ { $2 }$2 }~$3")
-          );
-          obj_txt_in = (obj_txt_in).replaceAll(
-            rgx.inline_link_endnote_url_helper,
-            (mkup.lnk_o ~ "$1" ~ mkup.lnk_c
-              ~ mkup.url_o ~ "$2" ~ mkup.url_c
-              ~ "~{ " ~ mkup.lnk_o ~ " $2 " ~ mkup.lnk_c
-              ~ mkup.url_o ~ "$2" ~ mkup.url_c
-              ~  " }~") // ("{ $1 }$2~{ { $2 }$2 }~")
-          );
-        }
-        /+ link with regular markup:
-           { linked text or image }http://url
-        +/
-        if (obj_txt_in.match(rgx.inline_link_markup_regular)) {
-          obj_txt_in = (obj_txt_in).replaceAll(
-            rgx.inline_link_markup_regular,
-            ("$1"
-              ~ mkup.lnk_o ~ "$2" ~ mkup.lnk_c
-              ~  mkup.url_o ~ "$3" ~  mkup.url_c
-              ~ "$4")            // ("$1{ $2 }$3$4")
-          );
-        }
-      }
-      obj_txt_in = obj_txt_in.replaceAll(rgx.inline_mono_box, ("#{$1}#"));
-      return obj_txt_in;
-    }
-    auto footnotes_endnotes_markup_and_number_or_stars(Ot)(Ot obj_txt_in, bool reset_note_numbers) {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-      /+ endnotes (regular) +/
-      bool flg_notes_reg  = false;
-      bool flg_notes_star = false;
-      obj_txt_in = (obj_txt_in).replaceAll(
-        rgx.inline_notes_curly,
-        (mkup.en_a_o ~ " $1" ~ mkup.en_a_c)
-      );
-      if (!(stage_reset_note_numbers) && reset_note_numbers) {
-        stage_reset_note_numbers = true;
-      }
-      if (obj_txt_in.match(rgx.inline_notes_al_gen)) {
-        if (auto m = obj_txt_in.matchAll(rgx.inline_text_and_note_al_)) {
-          if (stage_reset_note_numbers) {
-            n_foot = 0;
-            n_foot_reg = 0;
-            n_foot_sp_asterisk = 0;
-            n_foot_sp_plus = 0;
-          }
-          stage_reset_note_numbers = false;
-          foreach(n; m) {
-            if (n.hit.to!string.match(rgx.inline_al_delimiter_open_symbol_star)) {
-              flg_notes_star =  true;
-              ++n_foot_sp_asterisk;
-              asterisks_ = "*";
-              n_foot=n_foot_sp_asterisk;
-              obj_txt_out ~= n.hit.to!string.replaceFirst(
-                rgx.inline_al_delimiter_open_symbol_star,
-                (mkup.en_a_o ~ replicate(asterisks_, n_foot_sp_asterisk) ~ " ")
-              ) ~ "\n";
-            } else if (n.hit.to!string.match(rgx.inline_al_delimiter_open_regular)) {
-              flg_notes_reg =  true;
-              ++n_foot_reg;
-              n_foot=n_foot_reg;
-              obj_txt_out ~= n.hit.to!string.replaceFirst(
-                rgx.inline_al_delimiter_open_regular,
-                (mkup.en_a_o ~ to!string(n_foot) ~ " ")
-              ) ~ "\n";
-            } else {
-              obj_txt_out ~= n.hit.to!string ~ "\n";
-            }
-          }
-        }
-      } else {
-        obj_txt_out = obj_txt_in;
-      }
-      auto t = tuple(
-        obj_txt_out,
-        flg_notes_reg,
-        flg_notes_star,
-      );
-      return t;
-    }
-    private auto object_notes_and_links_(Ot)(Ot obj_txt_in, bool reset_note_numbers=false)
-    in {
-      debug(asserts) {
-        assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt_out = "";
-      bool urls = false;
-      tail = "";
-      /+ special endnotes +/
-      obj_txt_in = obj_txt_in.replaceAll(
-        rgx.inline_notes_curly_sp_asterisk,
-        (mkup.en_a_o ~ "*" ~ " $1" ~ mkup.en_a_c)
-      );
-      obj_txt_in =
-        obj_txt_in.replaceAll(
-          rgx.inline_notes_curly_sp_plus,
-          (mkup.en_a_o ~ "+" ~ " $1" ~ mkup.en_a_c)
-        );
-      /+ url matched +/
-      if (obj_txt_in.match(rgx.inline_url)) {
-        urls = true;
-        obj_txt_in = url_links(obj_txt_in);
-      }
-      auto ftn = footnotes_endnotes_markup_and_number_or_stars(obj_txt_in, reset_note_numbers);
-      obj_txt_out = ftn[0];
-      debug(footnotes) {
-        writeln(obj_txt_out, tail);
-      }
-      obj_txt_out = obj_txt_out ~ tail;
-      debug(footnotesdone) {
-        foreach(m; matchAll(obj_txt_out,
-        (mkup.en_a_o ~ `\s*(.+?)` ~ mkup.en_a_c))) {
-          writeln(m.captures[1]);
-          writeln(m.hit);
-        }
-      }
-      auto t = tuple(
-        obj_txt_out,
-        ftn[1],
-        ftn[2],
-        urls,
-      );
-      return t;
-    }
-    auto init()
-    in { }
-    body {
-      auto t = object_notes_and_links_("");
-      return t;
-    }
-    invariant() {
-    }
-    auto munge_heading(Ot)(Ot obj_txt_in, bool reset_note_numbers=false)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt["munge"]=(obj_txt_in)
-       .replaceFirst(rgx.heading, "")
-       .replaceFirst(rgx.obj_cite_number_off_all, "")
-       .strip;
-      auto t = object_notes_and_links_(obj_txt["munge"], reset_note_numbers);
-      debug(munge) {
-        writeln(__LINE__);
-        writeln(obj_txt_in);
-        writeln(__LINE__);
-        writeln(obj_txt["munge"].to!string);
-      }
-      return t;
-    }
-    invariant() {
-    }
-    auto munge_para(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt["munge"]=(obj_txt_in)
-        .replaceFirst(rgx.para_attribs, "")
-        .replaceFirst(rgx.obj_cite_number_off_all, "");
-      auto t = object_notes_and_links_(obj_txt["munge"]);
-      debug(munge) {
-        writeln(__LINE__);
-        writeln(obj_txt_in);
-        writeln(__LINE__);
-        writeln(obj_txt["munge"].to!string);
-      }
-      return t;
-    }
-    string munge_quote(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt["munge"]=obj_txt_in;
-      return obj_txt["munge"];
-    }
-    invariant() {
-    }
-    auto munge_group(string obj_txt_in)
-    in { }
-    body {
-      obj_txt["munge"]=obj_txt_in;
-      auto t = object_notes_and_links_(obj_txt["munge"]);
-      return t;
-    }
-    invariant() {
-    }
-    auto munge_block(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt["munge"]=obj_txt_in;
-      auto t = object_notes_and_links_(obj_txt["munge"]);
-      return t;
-    }
-    invariant() {
-    }
-    auto munge_verse(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt["munge"]=obj_txt_in;
-      auto t = object_notes_and_links_(obj_txt["munge"]);
-      return t;
-    }
-    invariant() {
-    }
-    string munge_code(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt_in = (obj_txt_in).replaceAll(rgx.space, mkup.nbsp);
-      obj_txt["munge"] = obj_txt_in;
-      return obj_txt["munge"];
-    }
-    invariant() {
-    }
-    string munge_table(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt["munge"]=obj_txt_in;
-      return obj_txt["munge"];
-    }
-    invariant() {
-    }
-    string munge_comment(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      obj_txt["munge"]=obj_txt_in;
-      return obj_txt["munge"];
-    }
-    invariant() {
-    }
-  }
-  struct ObjInlineMarkup {
-    auto rgx = Rgx();
-    auto munge = ObjInlineMarkupMunge();
-    string[string] obj_txt;
-    auto obj_inline_markup_and_anchor_tags_and_misc(O,K,Ma)(
-      O  obj_,
-      K  obj_key_,
-      Ma dochead_make_aa
-    )
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_)            == string[string]));
-        static assert(is(typeof(obj_key_)        == string));
-        static assert(is(typeof(dochead_make_aa) == string[string][string]));
-      }
-    }
-    body {
-      obj_txt["munge"] = obj_[obj_key_].dup;
-      obj_txt["munge"] = (obj_["is"].match(ctRegex!(`verse|code`)))
-      ? obj_txt["munge"]
-      : strip(obj_txt["munge"]);
-      static __gshared string[] anchor_tags_ = [];
-      auto x = munge.init;
-      bool[string] obj_notes_and_links;
-      obj_notes_and_links["notes_reg"]  = false;
-      obj_notes_and_links["notes_star"] = false;
-      obj_notes_and_links["links"]      = false;
-      switch (obj_["is"]) {
-      case "heading":
-        static __gshared string anchor_tag = "";
-        obj_txt["munge"]=_configured_auto_heading_numbering_and_segment_anchor_tags(obj_txt["munge"], obj_, dochead_make_aa);
-        obj_txt["munge"]=_make_segment_anchor_tags_if_none_provided(obj_txt["munge"], obj_["lev"]);
-        if (auto m = obj_txt["munge"].match(rgx.heading_anchor_tag)) {
-          anchor_tag = m.captures[1];
-          anchor_tags_ ~= anchor_tag;
-        } else if (obj_["lev"] == "1") {
-          writeln("heading anchor tag missing: ", obj_txt["munge"]);
-        }
-        x =munge.munge_heading(obj_txt["munge"], reset_note_numbers);
-        reset_note_numbers=false;
-        goto default;
-      case "para":
-        x = munge.munge_para(obj_txt["munge"]);
-        goto default;
-      case "group":
-        x = munge.munge_group(obj_txt["munge"]);
-        goto default;
-      case "block":
-        x = munge.munge_block(obj_txt["munge"]);
-        goto default;
-      case "verse":
-        x = munge.munge_verse(obj_txt["munge"]);
-        goto default;
-      case "code":
-        obj_txt["munge"] = munge.munge_code(obj_txt["munge"]);
-        break;
-      case "table":
-        obj_txt["munge"] = munge.munge_table(obj_txt["munge"]);
-        break;
-      case "quote":
-        obj_txt["munge"] = munge.munge_quote(obj_txt["munge"]);
-        break;
-      case "comment":
-        obj_txt["munge"] = munge.munge_comment(obj_txt["munge"]);
-        break;
-      case "doc_end_reset":
-        munge.initialize_note_numbers();
-        break;
-      default:
-        /+ para, heading, group, block, verse +/
-        obj_txt["munge"]                  = x[0];
-        obj_notes_and_links["notes_reg"]  = x[1];
-        obj_notes_and_links["notes_star"] = x[2];
-        obj_notes_and_links["links"]      = x[3];
-        break;
-      }
-      auto t = tuple(
-        obj_txt["munge"],
-        anchor_tags_,
-        obj_notes_and_links["notes_reg"],
-        obj_notes_and_links["notes_star"],
-        obj_notes_and_links["links"],
-      );
-      anchor_tags_=[];
-      return t;
-    }
-    invariant() {
-    }
-    auto _clean_heading_toc_(Toc)(
-      Toc heading_toc_,
-    ) {
-     debug(asserts) {
-       static assert(is(typeof(heading_toc_) == char[]));
-     }
-     auto m = (cast(char[]) heading_toc_).matchFirst(rgx.heading);
-     heading_toc_ = (m.post).replaceAll(
-       rgx.inline_notes_curly_gen,
-       "");
-     return heading_toc_;
-    };
-    auto table_of_contents_gather_headings(O,Ma,Ts,Ta,X,Toc)(
-      O            obj_,
-      Ma           dochead_make_aa,
-      Ts           segment_anchor_tag_that_object_belongs_to,
-      Ta           _anchor_tag,
-      return ref X lev4_subtoc,
-      Toc          the_table_of_contents_section,
-    )
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_)                                      == string[string]));
-        static assert(is(typeof(dochead_make_aa)                           == string[string][string]));
-        static assert(is(typeof(segment_anchor_tag_that_object_belongs_to) == string));
-        static assert(is(typeof(_anchor_tag)                               == string));
-        static assert(is(typeof(lev4_subtoc)                               == string[][string]));
-        static assert(is(typeof(the_table_of_contents_section)             == ObjGenericComposite[][string]));
-      }
-    }
-    body {
-      ObjGenericComposite comp_obj_toc;
-      mixin InternalMarkup;
-      auto mkup = InlineMarkup();
-      char[] heading_toc_ = (obj_["substantive"].dup.strip.to!(char[])).replaceAll(rgx.inline_notes_al, "");
-      heading_toc_ = _clean_heading_toc_(heading_toc_);
-      auto attrib="";
-      string toc_txt_, subtoc_txt_;
-      int[string] indent;
-      if (obj_["lev_markup_number"].to!int > 0) {
-        indent=[
-          "hang_position" : obj_["lev_markup_number"].to!int,
-          "base_position" : obj_["lev_markup_number"].to!int,
-        ];
-        toc_txt_ = format(
-          "{ %s }#%s",
-          heading_toc_,
-          _anchor_tag,
-        );
-        toc_txt_= munge.url_links(toc_txt_);
-        comp_obj_toc                       = comp_obj_toc.init;
-        comp_obj_toc.use                   = "frontmatter";
-        comp_obj_toc.is_of                 = "para";
-        comp_obj_toc.is_a                  = "toc";
-        comp_obj_toc.ocn                   = 0;
-        comp_obj_toc.obj_cite_number       = "";
-        comp_obj_toc.indent_hang           = indent["hang_position"];
-        comp_obj_toc.indent_base           = indent["base_position"];
-        comp_obj_toc.bullet                = false;
-        comp_obj_toc.text                  = toc_txt_.to!string.strip;
-        comp_obj_toc.inline_links          = true;
-        the_table_of_contents_section["scroll"] ~= comp_obj_toc;
-      } else {
-        indent=[
-          "hang_position" : 0,
-          "base_position" : 0,
-        ];
-        comp_obj_toc                       = comp_obj_toc.init;
-        comp_obj_toc.use                   = "frontmatter";
-        comp_obj_toc.is_of                 = "para";
-        comp_obj_toc.is_a                  = "toc";
-        comp_obj_toc.ocn                   = 0;
-        comp_obj_toc.obj_cite_number       = "";
-        comp_obj_toc.indent_hang           = indent["hang_position"];
-        comp_obj_toc.indent_base           = indent["base_position"];
-        comp_obj_toc.bullet                = false;
-        comp_obj_toc.text                  = "Table of Contents";
-        comp_obj_toc.inline_links          = true;
-        the_table_of_contents_section["scroll"] ~= comp_obj_toc;
-      }
-      comp_obj_toc                       = comp_obj_toc.init;
-      comp_obj_toc.use                   = "frontmatter";
-      comp_obj_toc.is_of                 = "para";
-      comp_obj_toc.is_a                  = "toc";
-      comp_obj_toc.ocn                   = 0;
-      comp_obj_toc.obj_cite_number       = "";
-      comp_obj_toc.bullet                = false;
-      comp_obj_toc.inline_links          = true;
-      switch (obj_["lev_markup_number"].to!int) {
-      case 0:
-        indent=[
-          "hang_position" : 0,
-          "base_position" : 0,
-        ];
-        toc_txt_ = "{ Table of Contents }" ~ mkup.mark_internal_site_lnk ~ "toc.fnSuffix";
-        toc_txt_= munge.url_links(toc_txt_);
-        comp_obj_toc.indent_hang             = indent["hang_position"];
-        comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = toc_txt_.to!string.strip;
-        comp_obj_toc.inline_links            = true;
-        the_table_of_contents_section["seg"] ~= comp_obj_toc;
-        break;
-      case 1: .. case 3:
-        indent=[
-          "hang_position" : obj_["lev_markup_number"].to!int,
-          "base_position" : obj_["lev_markup_number"].to!int,
-        ];
-        toc_txt_ = format(
-          "%s",
-          heading_toc_,
-        );
-        toc_txt_= munge.url_links(toc_txt_);
-        comp_obj_toc.indent_hang             = indent["hang_position"];
-        comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = toc_txt_.to!string.strip;
-        comp_obj_toc.inline_links            = true;
-        the_table_of_contents_section["seg"] ~= comp_obj_toc;
-        break;
-      case 4:
-        toc_txt_ = format(
-          "{ %s }%s%s%s",
-          heading_toc_,
-          mkup.mark_internal_site_lnk,
-          segment_anchor_tag_that_object_belongs_to,
-          ".fnSuffix",
-        );
-        lev4_subtoc[segment_anchor_tag_that_object_belongs_to] = [];
-        toc_txt_= munge.url_links(toc_txt_);
-        indent=[
-          "hang_position" : obj_["lev_markup_number"].to!int,
-          "base_position" : obj_["lev_markup_number"].to!int,
-        ];
-        comp_obj_toc.indent_hang             = indent["hang_position"];
-        comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = toc_txt_.to!string.strip;
-        comp_obj_toc.inline_links            = true;
-        the_table_of_contents_section["seg"] ~= comp_obj_toc;
-        break;
-      case 5: .. case 7:
-        toc_txt_ = format(
-          "{ %s }%s%s%s#%s",
-          heading_toc_,
-          mkup.mark_internal_site_lnk,
-          segment_anchor_tag_that_object_belongs_to,
-          ".fnSuffix",
-          _anchor_tag,
-        );
-        subtoc_txt_ = format(
-          "{ %s }#%s",
-          heading_toc_,
-          _anchor_tag,
-        );
-        lev4_subtoc[segment_anchor_tag_that_object_belongs_to]
-        ~= munge.url_links(obj_["lev_markup_number"]
-             ~ "~ " ~ subtoc_txt_.to!string.strip
-           );
-        toc_txt_= munge.url_links(toc_txt_);
-        indent=[
-          "hang_position" : obj_["lev_markup_number"].to!int,
-          "base_position" : obj_["lev_markup_number"].to!int,
-        ];
-        comp_obj_toc.indent_hang             = indent["hang_position"];
-        comp_obj_toc.indent_base             = indent["base_position"];
-        comp_obj_toc.text                    = toc_txt_.to!string.strip;
-        comp_obj_toc.inline_links            = true;
-        the_table_of_contents_section["seg"] ~= comp_obj_toc;
-        break;
-      default:
-        break;
-      }
-      return the_table_of_contents_section;
-    }
-    invariant() {
-    }
-  private:
-    static string _configured_auto_heading_numbering_and_segment_anchor_tags(M,O,Ma)(
-      M  munge_,
-      O  obj_,
-      Ma dochead_make_aa
-    ) {
-      debug(asserts) {
-        static assert(is(typeof(munge_)          == string));
-        static assert(is(typeof(obj_)            == string[string]));
-        static assert(is(typeof(dochead_make_aa) == string[string][string]));
-      }
-      if (dochead_make_aa["make"]["num_top"].length > 0) {
-        static __gshared int heading_num_top_level=9;
-        static __gshared int heading_num_depth=2;
-        static __gshared int heading_num_0 = 0;
-        static __gshared int heading_num_1 = 0;
-        static __gshared int heading_num_2 = 0;
-        static __gshared int heading_num_3 = 0;
-        static __gshared string heading_number_auto_composite = "";
-        if (heading_num_top_level==9) {
-          if (dochead_make_aa["make"]["num_depth"].length > 0) {
-            heading_num_depth = dochead_make_aa["make"]["num_depth"].to!uint;
-          }
-          switch (dochead_make_aa["make"]["num_top"]) {
-          case "A":
-            break;
-          case "B":
-            heading_num_top_level=1;
-            break;
-          case "C":
-            heading_num_top_level=2;
-            break;
-          case "D":
-            heading_num_top_level=3;
-            break;
-          case "1":
-            heading_num_top_level=4;
-            break;
-          case "2":
-            heading_num_top_level=5;
-            break;
-          case "3":
-            heading_num_top_level=6;
-            break;
-          case "4":
-            heading_num_top_level=7;
-            break;
-          default:
-            break;
-          }
-        }
-        /+ num_depth minimum 0
-           (1.) default 2 (1.1.1) max 3 (1.1.1.1) implement +/
-        if (
-          heading_num_top_level
-          > obj_["lev_markup_number"].to!uint
-        ) {
-          heading_num_1 = 0;
-          heading_num_2 = 0;
-          heading_num_3 = 0;
-        } else if (
-          heading_num_top_level
-          == obj_["lev_markup_number"].to!uint
-        ) {
-          heading_num_0 ++;
-          heading_num_1 = 0;
-          heading_num_2 = 0;
-          heading_num_3 = 0;
-        } else if (
-          heading_num_top_level
-          == (obj_["lev_markup_number"].to!uint - 1)
-        ) {
-          heading_num_1 ++;
-          heading_num_2 = 0;
-          heading_num_3 = 0;
-        } else if (
-          heading_num_top_level
-          == (obj_["lev_markup_number"].to!uint - 2)
-        ) {
-          heading_num_2 ++;
-          heading_num_3 = 0;
-        } else if (
-          heading_num_top_level
-          == (obj_["lev_markup_number"].to!uint - 3)
-        ) {
-          heading_num_3 ++;
-        }
-        if (heading_num_3 > 0) {
-          heading_number_auto_composite =
-            (heading_num_depth == 3)
-            ? ( heading_num_0.to!string ~ "."
-                ~ heading_num_1.to!string ~ "."
-                ~ heading_num_2.to!string ~ "."
-                ~ heading_num_3.to!string
-              )
-            : "";
-        } else if (heading_num_2 > 0) {
-          heading_number_auto_composite =
-            ((heading_num_depth >= 2)
-            && (heading_num_depth <= 3))
-            ?  ( heading_num_0.to!string ~ "."
-                 ~ heading_num_1.to!string ~ "."
-                 ~ heading_num_2.to!string
-               )
-            : "";
-        } else if (heading_num_1 > 0) {
-          heading_number_auto_composite =
-            ((heading_num_depth >= 1)
-            && (heading_num_depth <= 3))
-            ? ( heading_num_0.to!string ~ "."
-                 ~ heading_num_1.to!string
-               )
-            : "";
-        } else if (heading_num_0 > 0) {
-          heading_number_auto_composite =
-            ((heading_num_depth >= 0)
-            && (heading_num_depth <= 3))
-            ?  (heading_num_0.to!string)
-            : "";
-        } else {
-          heading_number_auto_composite = "";
-        }
-        debug(heading_number_auto) {
-          writeln(heading_number_auto_composite);
-        }
-        if ((!empty(heading_number_auto_composite))
-        && (obj_["lev_markup_number"].to!uint >= heading_num_top_level)) {
-          munge_=(munge_)
-          .replaceFirst(rgx.heading,
-            "$1~$2 " ~ heading_number_auto_composite ~ ". ")
-          .replaceFirst(rgx.heading_marker_missing_tag,
-            "$1~" ~ heading_number_auto_composite ~ " ");
-        }
-      }
-      return munge_;
-    }
-    static string _make_segment_anchor_tags_if_none_provided(M,Lv)(M munge_, Lv lev_) {
-      debug(asserts) {
-        static assert(is(typeof(munge_) == string));
-        static assert(is(typeof(lev_)   == string));
-      }
-      if (!(munge_.match(rgx.heading_anchor_tag))) {
-        if (munge_.match(rgx.heading_identify_anchor_tag)) {
-          if (auto m = munge_.match(rgx.heading_extract_named_anchor_tag)) {
-            munge_=(munge_).replaceFirst(
-              rgx.heading_marker_missing_tag,
-              "$1~" ~ m.captures[1].toLower ~ "_"  ~ m.captures[2] ~ " ");
-          } else if (auto m = munge_.match(rgx.heading_extract_unnamed_anchor_tag)) {
-            munge_=(munge_).replaceFirst(
-              rgx.heading_marker_missing_tag,
-              "$1~" ~ "s" ~ m.captures[1] ~ " ");
-          }
-        } else if (lev_ == "1") { // (if not successful) manufacture a unique anchor tag for lev=="1"
-          static __gshared int heading_num_lev1 = 0;
-          heading_num_lev1 ++;
-          munge_=(munge_).replaceFirst(
-            rgx.heading_marker_missing_tag,
-            "$1~" ~ "x" ~ heading_num_lev1.to!string ~ " ");
-        }
-      }
-      return munge_;
-    }
-    unittest {
-      string txt_lev="1";
-      string txt_in, txt_out;
-  
-      txt_in = "1~copyright Copyright";
-      txt_out ="1~copyright Copyright";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in = "1~ 6. Writing Copyright Licenses";
-      txt_out ="1~s6 6. Writing Copyright Licenses";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in= "1~ 1. Reinforcing trends";
-      txt_out= "1~s1 1. Reinforcing trends";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in= "1~ 11 SCIENCE AS A COMMONS";
-      txt_out= "1~s11 11 SCIENCE AS A COMMONS";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in= "1~ Chapter 1";
-      txt_out="1~chapter_1 Chapter 1";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in= "1~ Chapter 1.";
-      txt_out="1~chapter_1 Chapter 1.";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in= "1~ Chapter 1: Done";
-      txt_out="1~chapter_1 Chapter 1: Done";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in=  "1~ Chapter 11 - The Battle Over the Institutional Ecology of the Digital Environment";
-      txt_out= "1~chapter_11 Chapter 11 - The Battle Over the Institutional Ecology of the Digital Environment";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in= "1~ CHAPTER I.";
-      txt_out="1~x1 CHAPTER I.";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-  
-      txt_in= "1~ CHAPTER II.";
-      txt_out="1~x2 CHAPTER II.";
-      assert(_make_segment_anchor_tags_if_none_provided(txt_in, txt_lev) == txt_out);
-    }
-  }
-  /+ +/
-  struct ObjAttributes {
-    string[string] _obj_attrib;
-    string obj_attributes(Oi,OR,OH)(
-      Oi obj_is_,
-      OR obj_raw,
-      OH _comp_obj_heading,
-    )
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_is_)           == string));
-        static assert(is(typeof(obj_raw)           == string));
-        static assert(is(typeof(_comp_obj_heading) == ObjGenericComposite));
-      }
-    }
-    body {
-      scope(exit) {
-        destroy(obj_is_);
-        destroy(obj_raw);
-        destroy(_comp_obj_heading);
-      }
-      _obj_attrib["json"] ="{";
-      switch (obj_is_) {
-      case "heading":
-        _obj_attrib["json"] ~= _heading(obj_raw);
-        break;
-      case "para":
-        _obj_attrib["json"] ~= _para_and_blocks(obj_raw)
-        ~ _para(obj_raw);
-        break;
-      case "code":
-        _obj_attrib["json"] ~= _code(obj_raw);
-        break;
-      case "group":
-        _obj_attrib["json"] ~= _para_and_blocks(obj_raw)
-        ~ _group(obj_raw);
-        break;
-      case "block":
-        _obj_attrib["json"] ~= _para_and_blocks(obj_raw)
-        ~ _block(obj_raw);
-        break;
-      case "verse":
-        _obj_attrib["json"] ~= _verse(obj_raw);
-        break;
-      case "quote":
-        _obj_attrib["json"] ~= _quote(obj_raw);
-        break;
-      case "table":
-        _obj_attrib["json"] ~= _table(obj_raw);
-        break;
-      case "comment":
-        _obj_attrib["json"] ~= _comment(obj_raw);
-        break;
-      default:
-        _obj_attrib["json"] ~= _para(obj_raw);
-        break;
-      }
-      _obj_attrib["json"] ~=" }";
-      _obj_attrib["json"]=_set_additional_values_parse_as_json(_obj_attrib["json"], obj_is_, _comp_obj_heading);
-      debug(structattrib) {
-        if (oa_j["is"].str() == "heading") {
-          writeln(_obj_attrib["json"]);
-          writeln(
-            "is: ", oa_j["is"].str(),
-            "; obj_cite_number: ", oa_j["obj_cite_number"].integer()
-          );
-        }
-      }
-      return _obj_attrib["json"];
-    }
-    invariant() {
-    }
-    private:
-    string _obj_attributes;
-    string _para_and_blocks(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      if (obj_txt_in.matchFirst(rgx.para_bullet)) {
-        _obj_attributes =" \"bullet\": \"true\","
-        ~ " \"indent_hang\": 0,"
-        ~ " \"indent_base\": 0,";
-      } else if (auto m = obj_txt_in.matchFirst(rgx.para_bullet_indent)) {
-        _obj_attributes =" \"bullet\": \"true\","
-        ~ " \"indent_hang\": " ~ m.captures[1].to!string ~ ","
-        ~ " \"indent_base\": " ~ m.captures[1].to!string ~ ",";
-      } else if (auto m = obj_txt_in.matchFirst(rgx.para_indent_hang)) {
-        _obj_attributes =" \"bullet\": \"false\","
-        ~ " \"indent_hang\": " ~ m.captures[1].to!string ~ ","
-        ~ " \"indent_base\": " ~  m.captures[2].to!string ~ ",";
-      } else if (auto m = obj_txt_in.matchFirst(rgx.para_indent)) {
-        _obj_attributes =" \"bullet\": \"false\","
-        ~ " \"indent_hang\": " ~ m.captures[1].to!string ~ ","
-        ~ " \"indent_base\": " ~ m.captures[1].to!string ~ ",";
-      } else {
-        _obj_attributes =" \"bullet\": \"false\","
-        ~ " \"indent_hang\": 0,"
-        ~ " \"indent_base\": 0,";
-      }
-      return _obj_attributes;
-    }
-    string _heading(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"para\","
-      ~ " \"is\": \"heading\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _para(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"para\","
-      ~ " \"is\": \"para\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _quote(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"block\","
-      ~ " \"is\": \"quote\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _group(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"block\","
-      ~ " \"is\": \"group\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _block(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"block\","
-      ~ " \"is\": \"block\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _verse(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"block\","
-      ~ " \"is\": \"verse\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _code(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"block\","
-      ~ " \"is\": \"code\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _table(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"content\","
-      ~ " \"of\": \"block\","
-      ~ " \"is\": \"table\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _comment(Ot)(Ot obj_txt_in)
-    in {
-      debug(asserts) {
-        static assert(is(typeof(obj_txt_in) == string));
-      }
-    }
-    body {
-      _obj_attributes = " \"use\": \"comment\","
-      ~ " \"of\": \"comment\","
-      ~ " \"is\": \"comment\"";
-      return _obj_attributes;
-    }
-    invariant() {
-    }
-    string _set_additional_values_parse_as_json(OA,Oi,OH)(
-      OA _obj_attrib,
-      Oi obj_is_,
-      OH _comp_obj_heading,
-    ) {
-      debug(asserts) {
-        static assert(is(typeof(_obj_attrib)       == string));
-        static assert(is(typeof(obj_is_)           == string));
-        static assert(is(typeof(_comp_obj_heading) == ObjGenericComposite));
-      }
-      JSONValue oa_j = parseJSON(_obj_attrib);
-      assert(
-        (oa_j.type == JSON_TYPE.OBJECT)
-      );
-      if (obj_is_ == "heading") {
-        oa_j.object["obj_cite_number"] = _comp_obj_heading.ocn;
-        oa_j.object["lev_markup_number"] = _comp_obj_heading.heading_lev_markup;
-        oa_j.object["lev_collapsed_number"] = _comp_obj_heading.heading_lev_collapsed;
-        oa_j.object["heading_ptr"] =
-          _comp_obj_heading.ptr_heading;
-        oa_j.object["doc_object_ptr"] =
-          _comp_obj_heading.ptr_doc_object;
-      }
-      oa_j.object["parent_obj_cite_number"] = _comp_obj_heading.parent_ocn;
-      oa_j.object["parent_lev_markup_number"] = _comp_obj_heading.parent_lev_markup;
-      _obj_attrib = oa_j.toString();
-      return _obj_attrib;
-    }
-  }
-  /+ +/
-  struct BookIndexNuggetHash {
-    string main_term, sub_term, sub_term_bits;
-    int obj_cite_number_offset, obj_cite_number_endpoint;
-    string[] obj_cite_numbers;
-    string[][string][string] bi;
-    string[][string][string] hash_nugget;
-    string[] bi_main_terms_split_arr;
-    string[][string][string] bookindex_nugget_hash(BI,N,S)(
-      BI bookindex_section,
-      N  obj_cite_number,
-      S  segment_anchor_tag,
-    )
-    in {
-      debug(asserts) {
-        static assert(is(typeof(bookindex_section) == string));
-        static assert(is(typeof(obj_cite_number)   == int));
-      }
-      debug(bookindexraw) {
-        if (!bookindex_section.empty) {
-          writeln(
-            "* [bookindex] ",
-            "[", obj_cite_number.to!string, ": ", segment_anchor_tag, "] ", bookindex_section
-          );
-        }
-      }
-    }
-    body {
-      auto rgx = Rgx();
-      if (!bookindex_section.empty) {
-        auto bi_main_terms_split_arr =
-          bookindex_section.split(rgx.bi_main_terms_split);
-        foreach (bi_main_terms_content; bi_main_terms_split_arr) {
-          auto bi_main_term_and_rest =
-            bi_main_terms_content.split(rgx.bi_main_term_plus_rest_split);
-          if (auto m = bi_main_term_and_rest[0].match(
-            rgx.bi_term_and_obj_cite_numbers_match)
-          ) {
-            main_term = m.captures[1].strip;
-            obj_cite_number_offset = m.captures[2].to!int;
-            obj_cite_number_endpoint=(obj_cite_number + obj_cite_number_offset);
-            obj_cite_numbers ~= (obj_cite_number.to!string ~ "-" ~ to!string(obj_cite_number_endpoint)
-            ~ ":" ~ segment_anchor_tag);
-          } else {
-            main_term = bi_main_term_and_rest[0].strip;
-            obj_cite_numbers ~= obj_cite_number.to!string
-            ~ ":" ~ segment_anchor_tag;
-          }
-          bi[main_term]["_a"] ~= obj_cite_numbers;
-          obj_cite_numbers=null;
-          if (bi_main_term_and_rest.length > 1) {
-            auto bi_sub_terms_split_arr =
-              bi_main_term_and_rest[1].split(
-                rgx.bi_sub_terms_plus_obj_cite_number_offset_split
-              );
-            foreach (sub_terms_bits; bi_sub_terms_split_arr) {
-              if (auto m = sub_terms_bits.match(rgx.bi_term_and_obj_cite_numbers_match)) {
-                sub_term = m.captures[1].strip;
-                obj_cite_number_offset = m.captures[2].to!int;
-                obj_cite_number_endpoint=(obj_cite_number + obj_cite_number_offset);
-                obj_cite_numbers ~= (obj_cite_number.to!string ~ " - " ~ to!string(obj_cite_number_endpoint)
-                ~ ":" ~ segment_anchor_tag);
-              } else {
-                sub_term = sub_terms_bits.strip;
-                obj_cite_numbers ~= to!string(obj_cite_number)
-                ~ ":" ~ segment_anchor_tag;
-              }
-              if (!empty(sub_term)) {
-                bi[main_term][sub_term] ~= obj_cite_numbers;
-              }
-              obj_cite_numbers=null;
-            }
-          }
-        }
-      }
-      hash_nugget = bi;
-      return hash_nugget;
-    }
-    invariant() {
-    }
-  }
-  struct BookIndexReportIndent {
-    int mkn, skn;
-    auto bookindex_report_indented(BI)(
-      BI bookindex_unordered_hashes
-    ) {
-      debug(asserts) {
-        static assert(is(typeof(bookindex_unordered_hashes) == string[][string][string]));
-      }
-      auto mainkeys=
-        bookindex_unordered_hashes.byKey.array.sort().release;
-      foreach (mainkey; mainkeys) {
-        debug(bookindex1) {
-          writeln(mainkey);
-        }
-        auto subkeys=
-          bookindex_unordered_hashes[mainkey].byKey.array.sort().release;
-        foreach (subkey; subkeys) {
-          debug(bookindex1) {
-            writeln("  ", subkey);
-            writeln("    ", to!string(
-              bookindex_unordered_hashes[mainkey][subkey]
-            ));
-          }
-          ++skn;
-        }
-        ++mkn;
-      }
-    }
-  }
-  struct BookIndexReportSection {
-    int  mkn, skn;
-    auto rgx = Rgx();
-    auto munge = ObjInlineMarkupMunge();
-    auto bookindex_write_section(BI)(
-      BI bookindex_unordered_hashes
-    ) {
-      debug(asserts) {
-        static assert(is(typeof(bookindex_unordered_hashes) == string[][string][string]));
-      }
-      auto mainkeys=bookindex_unordered_hashes.byKey.array.sort().release;
-      foreach (mainkey; mainkeys) {
-        write("_0_1 !{", mainkey, "}! ");
-        foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
-          auto go = (ref_).replaceAll(rgx.book_index_go, "$1");
-          write(" {", ref_, "}#", go, ", ");
-        }
-        writeln(" \\\\");
-        bookindex_unordered_hashes[mainkey].remove("_a");
-        auto subkeys=
-          bookindex_unordered_hashes[mainkey].byKey.array.sort().release;
-        foreach (subkey; subkeys) {
-          write("  ", subkey, ", ");
-          foreach (ref_; bookindex_unordered_hashes[mainkey][subkey]) {
-            auto go = (ref_).replaceAll(rgx.book_index_go, "$1");
-            write(" {", ref_, "}#", go, ", ");
-          }
-          writeln(" \\\\");
-          ++skn;
-        }
-        ++mkn;
-      }
-    }
-    auto bookindex_build_abstraction_section(BI,N,B)(
-      BI bookindex_unordered_hashes,
-      N  obj_cite_number,
-      B  opt_action,
-    ) {
-      debug(asserts) {
-        static assert(is(typeof(bookindex_unordered_hashes)                == string[][string][string]));
-        static assert(is(typeof(obj_cite_number)                           == int));
-        static assert(is(typeof(opt_action)                                == bool[string]));
-      }
-      mixin SiSUnode;
-      mixin InternalMarkup;
-      auto mkup = InlineMarkup();
-      string type_is;
-      string lev;
-      int heading_lev_markup, heading_lev_collapsed;
-      string attrib;
-      int[string] indent;
-      auto mainkeys =
-        bookindex_unordered_hashes.byKey.array.sort().release;
-      ObjGenericComposite[][string] bookindex_section;
-      ObjGenericComposite comp_obj_heading_, comp_obj_para;
-      auto node_para_int_ = node_metadata_para_int;
-      auto node_para_str_ = node_metadata_para_str;
-      if ((mainkeys.length > 0)
-      && (opt_action["backmatter"]
-      && opt_action["section_bookindex"])) {
-        string bi_tmp_seg, bi_tmp_scroll;
-        string[] bi_tmp_tags;
-        comp_obj_heading_                       = comp_obj_heading_.init;
-        comp_obj_heading_.use                   = "backmatter";
-        comp_obj_heading_.is_of                 = "para";
-        comp_obj_heading_.is_a                  = "heading";
-        comp_obj_heading_.text                  = "Book Index";
-        comp_obj_heading_.ocn                   = 0;
-        comp_obj_heading_.obj_cite_number       = "";
-        comp_obj_heading_.segment_anchor_tag    = "_part_book_index";
-        comp_obj_heading_.marked_up_level       = "B";
-        comp_obj_heading_.heading_lev_markup    = 1;
-        comp_obj_heading_.heading_lev_collapsed = 1;
-        comp_obj_heading_.parent_ocn            = 1;
-        comp_obj_heading_.parent_lev_markup     = 0;
-        comp_obj_heading.inline_links           = true;
-        bookindex_section["scroll"]             ~= comp_obj_heading_;
-        bookindex_section["seg"]                ~= comp_obj_heading_;
-        ++obj_cite_number;
-        ++mkn;
-        comp_obj_heading_                       = comp_obj_heading_.init;
-        comp_obj_heading_.use                   = "backmatter";
-        comp_obj_heading_.is_of                 = "para";
-        comp_obj_heading_.is_a                  = "heading";
-        comp_obj_heading_.text                  = "Index";
-        comp_obj_heading_.ocn                   = 0;
-        comp_obj_heading_.obj_cite_number       = "";
-        comp_obj_heading_.segment_anchor_tag    = "bookindex";
-        comp_obj_heading_.marked_up_level       = "1";
-        comp_obj_heading_.heading_lev_markup    = 4;
-        comp_obj_heading_.heading_lev_collapsed = 2;
-        comp_obj_heading_.parent_ocn            = 1;
-        comp_obj_heading_.parent_lev_markup     = 0;
-        comp_obj_heading.inline_links           = false;
-        comp_obj_heading_.anchor_tags           = ["bookindex"];
-        bookindex_section["scroll"]             ~= comp_obj_heading_;
-        bookindex_section["seg"]                ~= comp_obj_heading_;
-        ++obj_cite_number;
-        ++mkn;
-        import std.array : appender;
-        auto buffer = appender!(char[])();
-        string[dchar] transTable = [' ' : "_"];
-        foreach (mainkey; mainkeys) {
-          bi_tmp_tags = [""];
-          bi_tmp_scroll = "!{" ~ mainkey ~ "}! ";
-          buffer.clear();
-          bi_tmp_tags ~= translate(mainkey, transTable);
-          bi_tmp_seg = "!{" ~ mainkey ~ "}! ";
-          auto bkidx_lnk_seg(string locs) {
-            string markup = "";
-            if (auto m = locs.matchFirst(rgx.book_index_go_seg)) {
-              markup =
-                munge.url_links("{ " ~ m["link"] ~ " }"
-                ~ mkup.mark_internal_site_lnk ~ m["seg"] ~ ".fnSuffix"
-                ~ "#" ~ m["ocn"] ~ ", ");
-            } else {
-              writeln(__LINE__, ": ", locs);
-            }
-            return markup;
-          }
-          auto bkidx_lnk_scroll(string locs) {
-            string markup = "";
-            if (auto m = locs.matchFirst(rgx.book_index_go)) {
-              markup =
-                munge.url_links("{ " ~ m["link"] ~ " }"
-                ~ mkup.mark_internal_site_lnk
-                ~ "#" ~ m["ocn"] ~ ", ");
-            } else {
-              writeln(__LINE__, ": ", locs);
-            }
-            return markup;
-          }
-          foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
-            bi_tmp_scroll ~= bkidx_lnk_scroll(ref_);
-            bi_tmp_seg ~= bkidx_lnk_seg(ref_);
-          }
-          bi_tmp_scroll ~= " \\\\\n    ";
-          bi_tmp_seg ~= " \\\\\n    ";
-          bookindex_unordered_hashes[mainkey].remove("_a");
-          auto subkeys =
-            bookindex_unordered_hashes[mainkey].byKey.array.sort().release;
-          foreach (subkey; subkeys) {
-            bi_tmp_scroll ~= subkey ~ ", ";
-            buffer.clear();
-            bi_tmp_tags ~= translate(subkey, transTable);
-            bi_tmp_seg ~= subkey ~ ", ";
-            foreach (ref_; bookindex_unordered_hashes[mainkey][subkey]) {
-              bi_tmp_scroll ~= bkidx_lnk_scroll(ref_);
-              bi_tmp_seg ~= bkidx_lnk_seg(ref_);
-            }
-            bi_tmp_scroll ~= " \\\\\n    ";
-            bi_tmp_seg ~= " \\\\\n    ";
-            ++skn;
-          }
-          bi_tmp_scroll                       = (bi_tmp_scroll).replaceFirst(rgx.trailing_linebreak, "");
-          bi_tmp_seg                          = (bi_tmp_seg).replaceFirst(rgx.trailing_linebreak, "");
-          comp_obj_para                       = comp_obj_para.init;
-          comp_obj_para.use                   = "backmatter";
-          comp_obj_para.is_of                 = "para";
-          comp_obj_para.is_a                  = "bookindex";
-          comp_obj_para.text                  = bi_tmp_scroll.to!string.strip;
-          comp_obj_para.ocn                   = obj_cite_number;
-          comp_obj_para.obj_cite_number       = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
-          comp_obj_para.anchor_tags           = bi_tmp_tags;
-          comp_obj_para.indent_hang           = 0;
-          comp_obj_para.indent_base           = 1;
-          comp_obj_para.bullet                = false;
-          comp_obj_para.inline_links          = true;
-          bookindex_section["scroll"]         ~= comp_obj_para;
-          comp_obj_para.text                  = bi_tmp_seg.to!string.strip;
-          bookindex_section["seg"]            ~= comp_obj_para;
-          ++obj_cite_number;
-          ++mkn;
-        }
-      } else {                              // no book index, (figure out what to do here)
-        comp_obj_heading_                       = comp_obj_heading_.init;
-        comp_obj_heading_.text                  = "(skip) there is no Book Index";
-        comp_obj_heading_.ocn                   = 0;
-        comp_obj_heading_.obj_cite_number       = "";
-        comp_obj_heading_.marked_up_level       = "B";
-        comp_obj_heading_.heading_lev_markup    = 1;
-        comp_obj_heading_.heading_lev_collapsed = 1;
-        comp_obj_heading_.parent_ocn            = 1;
-        comp_obj_heading_.parent_lev_markup     = 0;
-        bookindex_section["scroll"]             ~= comp_obj_heading_;
-        bookindex_section["seg"]                ~= comp_obj_heading_;
-      }
-      auto t = tuple(bookindex_section, obj_cite_number);
-      return t;
-    }
-  }
-  /+ +/
-  struct NotesSection {
-    string[string] object_notes;
-    int previous_count;
-    int mkn;
-    auto rgx = Rgx();
-    private auto gather_notes_for_endnote_section(
-      ObjGenericComposite[] contents_am,
-      string                segment_anchor_tag_that_object_belongs_to,
-      int                   cntr,
-    )
-    in {
-      assert((contents_am[cntr].is_a == "para")
-      || (contents_am[cntr].is_a == "heading")
-      || (contents_am[cntr].is_a == "quote")
-      || (contents_am[cntr].is_a == "group")
-      || (contents_am[cntr].is_a == "block")
-      || (contents_am[cntr].is_a == "verse"));
-      assert(cntr >= previous_count);
-      previous_count=cntr;
-      assert(
-        (contents_am[cntr].text).match(
-        rgx.inline_notes_delimiter_al_regular_number_note)
-      );
-    }
-    body {
-      mixin InternalMarkup;
-      auto mkup = InlineMarkup();
-      auto munge = ObjInlineMarkupMunge();
-      foreach(
-        m;
-        (contents_am[cntr].text).matchAll(
-          rgx.inline_notes_delimiter_al_regular_number_note
-        )
-      ) {
-        debug(endnotes_build) {
-          writeln(
-            "{^{", m.captures[1], ".}^}"
-            ~ mkup.mark_internal_site_lnk,
-            segment_anchor_tag_that_object_belongs_to,
-              ".fnSuffix#noteref_\n  ", m.captures[1], " ",
-            m.captures[2]); // sometimes need segment name (segmented html & epub)
-        }
-        // TODO NEXT you need anchor for segments at this point ->
-        object_notes["anchor"] ~= "note_" ~ m.captures[1] ~ "』";
-        object_notes["notes"] ~= (segment_anchor_tag_that_object_belongs_to.empty)
-        ? (munge.url_links(
-            "{^{" ~ m.captures[1] ~ ".}^}#noteref_"
-            ~ m.captures[1]) ~ " "
-            ~ m.captures[2] ~ "』"
-          )
-        : (munge.url_links(
-            "{^{" ~ m.captures[1] ~ ".}^}"
-             ~ mkup.mark_internal_site_lnk
-             ~ segment_anchor_tag_that_object_belongs_to
-             ~ ".fnSuffix#noteref_"
-             ~ m.captures[1]) ~ " "
-             ~ m.captures[2] ~ "』"
-          );
-      }
-      return object_notes;
-    }
-    private auto gathered_notes()
-    in {
-    }
-    body {
-      string[][string] endnotes_;
-      if (object_notes.length > 1) {
-        endnotes_["notes"] = (object_notes["notes"].split(rgx.break_string))[0..$-1];
-        endnotes_["anchor"] = (object_notes["anchor"].split(rgx.break_string))[0..$-1];
-      } else {
-        endnotes_["notes"] = [];
-        endnotes_["anchor"] = [];
-      }
-      return endnotes_;
-    }
-    private auto endnote_objects(
-      int            obj_cite_number,
-      bool[string]   opt_action,
-    )
-    in {
-    }
-    body {
-      mixin SiSUnode;
-      ObjGenericComposite[] the_endnotes_section;
-      auto endnotes_ = gathered_notes();
-      string type_is;
-      string lev, lev_markup_number, lev_collapsed_number;
-      string attrib;
-      int[string] indent;
-      ObjGenericComposite comp_obj_heading_;
-      if ((endnotes_["notes"].length > 0)
-      && (opt_action["backmatter"] && opt_action["section_endnotes"])) {
-        comp_obj_heading_                       = comp_obj_heading_.init;
-        comp_obj_heading_.use                   = "backmatter";
-        comp_obj_heading_.is_of                 = "para";
-        comp_obj_heading_.is_a                  = "heading";
-        comp_obj_heading_.text                  = "Endnotes";
-        comp_obj_heading_.ocn                   = 0;
-        comp_obj_heading_.obj_cite_number       = "";
-        comp_obj_heading_.segment_anchor_tag    = "_part_endnotes";
-        comp_obj_heading_.marked_up_level       = "B";
-        comp_obj_heading_.heading_lev_markup    = 1;
-        comp_obj_heading_.heading_lev_collapsed = 1;
-        comp_obj_heading_.parent_ocn            = 1;
-        comp_obj_heading_.parent_lev_markup     = 0;
-        the_endnotes_section                    ~= comp_obj_heading_;
-        ++obj_cite_number;
-        ++mkn;
-        comp_obj_heading_                       = comp_obj_heading_.init;
-        comp_obj_heading_.use                   = "backmatter";
-        comp_obj_heading_.is_of                 = "para";
-        comp_obj_heading_.is_a                  = "heading";
-        comp_obj_heading_.text                  = "Endnotes";
-        comp_obj_heading_.ocn                   = 0;
-        comp_obj_heading_.obj_cite_number       = "";
-        comp_obj_heading_.segment_anchor_tag    = "endnotes";
-        comp_obj_heading_.marked_up_level       = "1";
-        comp_obj_heading_.heading_lev_markup    = 4;
-        comp_obj_heading_.heading_lev_collapsed = 2;
-        comp_obj_heading_.parent_ocn            = 1;
-        comp_obj_heading_.parent_lev_markup     = 0;
-        comp_obj_heading_.anchor_tags           = ["endnotes"];
-        the_endnotes_section                    ~= comp_obj_heading_;
-        ++obj_cite_number;
-        ++mkn;
-      } else {
-        comp_obj_heading_                       = comp_obj_heading_.init;
-        comp_obj_heading_.use                   = "empty";
-        comp_obj_heading_.is_of                 = "para";
-        comp_obj_heading_.is_a                  = "heading";
-        comp_obj_heading_.text                  = "(skip) there are no Endnotes";
-        comp_obj_heading_.ocn                   = 0;
-        comp_obj_heading_.obj_cite_number       = "";
-        comp_obj_heading_.marked_up_level       = "B";
-        comp_obj_heading_.heading_lev_markup    = 1;
-        comp_obj_heading_.heading_lev_collapsed = 1;
-        comp_obj_heading_.parent_ocn            = 1;
-        comp_obj_heading_.parent_lev_markup     = 0;
-        the_endnotes_section                    ~= comp_obj_heading_;
-      }
-      if (opt_action["backmatter"] && opt_action["section_endnotes"]) {
-        ObjGenericComposite comp_obj_endnote_;
-        comp_obj_endnote_                       = comp_obj_endnote_.init;
-        comp_obj_endnote_.use                   = "backmatter";
-        comp_obj_endnote_.is_of                 = "para";
-        comp_obj_endnote_.is_a                  = "endnote";
-        comp_obj_endnote_.ocn                   = 0;
-        comp_obj_heading_.obj_cite_number       = "";
-        comp_obj_endnote_.indent_hang           = 0;
-        comp_obj_endnote_.indent_base           = 0;
-        comp_obj_endnote_.bullet                = false;
-        foreach (i, endnote; endnotes_["notes"]) {
-          auto     m                            = endnote.matchFirst(rgx.note_ref);
-          string   notenumber                   = m.captures[1].to!string;
-          string   anchor_tag                   = "note_" ~ notenumber;
-          comp_obj_endnote_.anchor_tags         = [ endnotes_["anchor"][i] ];
-          comp_obj_endnote_.inline_links        = true;
-          comp_obj_endnote_.text                = endnote.strip;
-          the_endnotes_section                  ~= comp_obj_endnote_;
-        }
-      }
-      auto t = tuple(the_endnotes_section, obj_cite_number);
-      return t;
-    }
-  }
-  /+ +/
-  struct Bibliography {
-    public JSONValue[] _bibliography_(Bi,BJ)(
-      return ref Bi biblio_unsorted_incomplete,
-      return ref BJ bib_arr_json
-    )
-    in {
-      debug(asserts) {
-        static assert(is(typeof(biblio_unsorted_incomplete) == string[]));
-        static assert(is(typeof(bib_arr_json)               == JSONValue[]));
-      }
-   }
-    body {
-      JSONValue[] biblio_unsorted =
-        _biblio_unsorted_complete_(biblio_unsorted_incomplete, bib_arr_json);
-      biblio_arr_json = [];
-      biblio_unsorted_incomplete = [];
-      JSONValue[] biblio_sorted__ = biblio_sort(biblio_unsorted);
-      biblio_debug(biblio_sorted__);
-      debug(biblio0) {
-        writeln("---");
-        writeln("unsorted incomplete: ", biblio_unsorted_incomplete.length);
-        writeln("json:                ", bib_arr_json.length);
-        writeln("unsorted:            ", biblio_unsorted.length);
-        writeln("sorted:              ", biblio_sorted__.length);
-        int cntr;
-        int[7] x;
-        while (cntr < x.length) {
-          writeln(cntr, ": ", biblio_sorted__[cntr]["fulltitle"]);
-          cntr++;
-        }
-      }
-      return biblio_sorted__;
-    }
-    final private JSONValue[] _biblio_unsorted_complete_(Bi,BJ)(
-      Bi            biblio_unordered,
-      return ref BJ bib_arr_json
-    ) {
-      debug(asserts) {
-        static assert(is(typeof(biblio_unordered) == string[]));
-        static assert(is(typeof(bib_arr_json)     == JSONValue[]));
-      }
-      foreach (bibent; biblio_unordered) {
-        /+ update bib to include deemed_author, needed for:
-          sort_bibliography_array_by_deemed_author_year_title
-          either: sort on multiple fields, or; create such sort field
-        +/
-        JSONValue j = parseJSON(bibent);
-        if (!empty(j["fulltitle"].str)) {
-          if (!empty(j["author_raw"].str)) {
-            j["deemed_author"]=j["author_arr"][0];
-          } else if (!empty(j["editor_raw"].str)) {
-            j["deemed_author"]=j["editor_arr"][0];
-          }
-          j["sortby_deemed_author_year_title"] = (
-            j["deemed_author"].str ~
-             "; " ~
-             j["year"].str ~
-             "; "  ~
-             j["fulltitle"].str
-          );
-        }
-        bib_arr_json ~= j;
-      }
-      JSONValue[] biblio_unsorted_array_of_json_objects =
-        bib_arr_json.dup;
-        destroy(bib_arr_json);
-      return biblio_unsorted_array_of_json_objects;
-    }
-    final private JSONValue[] biblio_sort(BJ)(BJ biblio_unordered) {
-      debug(asserts) {
-        static assert(is(typeof(biblio_unordered) == JSONValue[]));
-      }
-      JSONValue[] biblio_sorted_;
-      biblio_sorted_ =
-        sort!((a, b){
-          return ((a["sortby_deemed_author_year_title"].str) < (b["sortby_deemed_author_year_title"].str));
-        })(biblio_unordered).array;
-      debug(bibliosorted) {
-        foreach (j; biblio_sorted_) {
-          if (!empty(j["fulltitle"].str)) {
-            writeln(j["sortby_deemed_author_year_title"]);
-          }
-        }
-      }
-      return biblio_sorted_;
-    }
-    void biblio_debug(BJ)(BJ biblio_sorted) {
-      debug(asserts) {
-        static assert(is(typeof(biblio_sorted) == JSONValue[]));
-      }
-      debug(biblio0) {
-        foreach (j; biblio_sorted) {
-          if (!empty(j["fulltitle"].str)) {
-            writeln(j["sortby_deemed_author_year_title"]);
-          }
-        }
-      }
-    }
-  }
-  /+ +/
-  struct NodeStructureMetadata {
-    int lv, lv0, lv1, lv2, lv3, lv4, lv5, lv6, lv7;
-    int obj_cite_number;
-    int[string] p_; // p_ parent_
-    auto rgx = Rgx();
-    ObjGenericComposite node_location_emitter(Lv,Ta,N,C,P,I)(
-      Lv lev_markup_number,
-      Ta segment_anchor_tag,
-      N  obj_cite_number_,
-      C  cntr_,
-      P  ptr_,
-      I  is_
-    )
-    in {
-      debug(asserts) {
-        static assert(is(typeof(lev_markup_number)  == string));
-        static assert(is(typeof(segment_anchor_tag) == string));
-        static assert(is(typeof(obj_cite_number_)   == int));
-        static assert(is(typeof(cntr_)              == int));
-        static assert(is(typeof(ptr_)               == int));
-        static assert(is(typeof(is_)                == string));
-      }
-      assert(is_ != "heading");
-      assert(obj_cite_number_.to!int >= 0);
-    }
-    body {
-      assert(is_ != "heading"); // should not be necessary
-      assert(obj_cite_number_.to!int >= 0); // should not be necessary
-      int obj_cite_number = obj_cite_number_.to!int;
-      if (lv7 > State.off) {
-        p_["lev_markup_number"] = DocStructMarkupHeading.h_text_4;
-        p_["obj_cite_number"] = lv7;
-      } else if (lv6 > State.off) {
-        p_["lev_markup_number"] = DocStructMarkupHeading.h_text_3;
-        p_["obj_cite_number"] = lv6;
-      } else if (lv5 > State.off) {
-        p_["lev_markup_number"] = DocStructMarkupHeading.h_text_2;
-        p_["obj_cite_number"] = lv5;
-      } else {
-        p_["lev_markup_number"] = DocStructMarkupHeading.h_text_1;
-        p_["obj_cite_number"] = lv4;
-      }
-      ObjGenericComposite comp_obj_location;
-      comp_obj_location                       = comp_obj_location.init;
-      comp_obj_location.is_a                  = is_;
-      comp_obj_location.ocn                   = obj_cite_number_;
-      comp_obj_location.segment_anchor_tag    = segment_anchor_tag.to!string;
-      comp_obj_location.parent_ocn            = p_["obj_cite_number"];
-      comp_obj_location.parent_lev_markup     = p_["lev_markup_number"];
-      debug(node) {
-        if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-          writeln("x ", _node.to!string);
-        } else {
-          writeln("- ", _node.to!string);
-        }
-      }
-      assert(comp_obj_location.parent_lev_markup >= 4);
-      assert(comp_obj_location.parent_lev_markup <= 7);
-      assert(comp_obj_location.parent_ocn >= 0);
-      return comp_obj_location;
-    }
-    invariant() {
-    }
-    ObjGenericComposite node_emitter_heading(T,L,Lm,Lc,Ta,N,C,P,LA,I,PSn,fNr,fNs,fL)(
-      T   _text,
-      L   lev,
-      Lm  lev_markup_number,
-      Lc  lev_collapsed_number,
-      Ta  segment_anchor_tag,
-      N   obj_cite_number_,
-      C   cntr_,
-      P   ptr_,
-      LA  lv_ancestors,
-      I   is_,
-      PSn html_segnames_ptr,
-      fNr flag_notes_reg,
-      fNs flag_notes_star,
-      fL  flag_links,
-    )
-    in {
-      debug(asserts) {
-        static assert(is(typeof(_text)                == string));
-        static assert(is(typeof(lev)                  == string));
-        static assert(is(typeof(lev_markup_number)    == string));
-        static assert(is(typeof(lev_collapsed_number) == string));
-        static assert(is(typeof(segment_anchor_tag)   == string));
-        static assert(is(typeof(obj_cite_number_)     == int));
-        static assert(is(typeof(cntr_)                == int));
-        static assert(is(typeof(ptr_)                 == int));
-        static assert(is(typeof(lv_ancestors)         == string[]));
-        static assert(is(typeof(is_)                  == string));
-        static assert(is(typeof(html_segnames_ptr)    == int));
-      }
-      assert(is_ == "heading");
-      assert(to!int(obj_cite_number_) >= 0);
-      assert(
-        lev_markup_number.match(rgx.levels_numbered),
-        ("not a valid heading level: " ~ lev_markup_number ~ " at " ~ obj_cite_number_.to!string)
-      );
-      if (lev_markup_number.match(rgx.levels_numbered)) {
-        if (lev_markup_number.to!int == 0) {
-          assert(obj_cite_number_.to!int == 1);
-        }
-      }
-    }
-    body {
-      int obj_cite_number = obj_cite_number_.to!int;
-      switch (lev_markup_number.to!int) {
-      case 0:
-        lv = DocStructMarkupHeading.h_sect_A;
-        lv0 = obj_cite_number;
-        lv1=0; lv2=0; lv3=0; lv4=0; lv5=0; lv6=0; lv7=0;
-        p_["lev_markup_number"] = 0;
-        p_["obj_cite_number"] = 0;
-        break;
-      case 1:
-        lv = DocStructMarkupHeading.h_sect_B;
-        lv1 = obj_cite_number;
-        lv2=0; lv3=0; lv4=0; lv5=0; lv6=0; lv7=0;
-        p_["lev_markup_number"] =
-          DocStructMarkupHeading.h_sect_A;
-        p_["obj_cite_number"] = lv0;
-        break;
-      case 2:
-        lv = DocStructMarkupHeading.h_sect_C;
-        lv2 = obj_cite_number;
-        lv3=0; lv4=0; lv5=0; lv6=0; lv7=0;
-        p_["lev_markup_number"] =
-          DocStructMarkupHeading.h_sect_B;
-        p_["obj_cite_number"] = lv1;
-        break;
-      case 3:
-        lv = DocStructMarkupHeading.h_sect_D;
-        lv3=obj_cite_number;
-        lv4=0; lv5=0; lv6=0; lv7=0;
-        p_["lev_markup_number"] =
-          DocStructMarkupHeading.h_sect_C;
-        p_["obj_cite_number"] = lv2;
-        break;
-      case 4:
-        lv = DocStructMarkupHeading.h_text_1;
-        lv4 = obj_cite_number;
-        lv5=0; lv6=0; lv7=0;
-        if (lv3 > State.off) {
-          p_["lev_markup_number"] =
-            DocStructMarkupHeading.h_sect_D;
-          p_["obj_cite_number"] = lv3;
-        } else if (lv2 > State.off) {
-          p_["lev_markup_number"] =
-            DocStructMarkupHeading.h_sect_C;
-          p_["obj_cite_number"] = lv2;
-        } else if (lv1 > State.off) {
-          p_["lev_markup_number"] =
-            DocStructMarkupHeading.h_sect_B;
-          p_["obj_cite_number"] = lv1;
-        } else {
-          p_["lev_markup_number"] =
-            DocStructMarkupHeading.h_sect_A;
-          p_["obj_cite_number"] = lv0;
-        }
-        break;
-      case 5:
-        lv = DocStructMarkupHeading.h_text_2;
-        lv5 = obj_cite_number;
-        lv6=0; lv7=0;
-        p_["lev_markup_number"] =
-          DocStructMarkupHeading.h_text_1;
-        p_["obj_cite_number"] = lv4;
-        break;
-      case 6:
-        lv = DocStructMarkupHeading.h_text_3;
-        lv6 = obj_cite_number;
-        lv7=0;
-        p_["lev_markup_number"] =
-          DocStructMarkupHeading.h_text_2;
-        p_["obj_cite_number"] = lv5;
-        break;
-      case 7:
-        lv = DocStructMarkupHeading.h_text_4;
-        lv7 = obj_cite_number;
-        p_["lev_markup_number"] =
-          DocStructMarkupHeading.h_text_3;
-        p_["obj_cite_number"] = lv6;
-        break;
-      default:
-        break;
-      }
-      ObjGenericComposite _comp_obj_heading_;
-      _comp_obj_heading_                           = _comp_obj_heading_.init;
-      _comp_obj_heading_.use                       = "body";
-      _comp_obj_heading_.is_of                     = "para";
-      _comp_obj_heading_.is_a                      = "heading";
-      _comp_obj_heading_.text                      = _text.to!string.strip;
-      _comp_obj_heading_.ocn                       = obj_cite_number_;
-      _comp_obj_heading_.obj_cite_number           = (obj_cite_number==0) ? "" : obj_cite_number.to!string;
-      _comp_obj_heading_.segment_anchor_tag        = segment_anchor_tag.to!string;
-      _comp_obj_heading_.marked_up_level           = lev;
-      _comp_obj_heading_.heading_lev_markup        = (!(lev_markup_number.empty) ? lev_markup_number.to!int : 0);
-      _comp_obj_heading_.heading_lev_collapsed     = (!(lev_collapsed_number.empty) ? lev_collapsed_number.to!int : 0);
-      _comp_obj_heading_.parent_ocn                = p_["obj_cite_number"];
-      _comp_obj_heading_.parent_lev_markup         = p_["lev_markup_number"];
-      _comp_obj_heading_.heading_ancestors_text    = lv_ancestors;
-      _comp_obj_heading_.ptr_doc_object            = cntr_;
-      _comp_obj_heading_.ptr_html_segnames         = ((lev_markup_number == "4") ? html_segnames_ptr : 0);
-      _comp_obj_heading_.ptr_heading               = ptr_;
-      _comp_obj_heading_.inline_notes_reg          = flag_notes_reg;
-      _comp_obj_heading_.inline_notes_star         = flag_notes_star;
-      _comp_obj_heading_.inline_links              = flag_links;
-      debug(node) {
-        if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-          writeln("* ", _node.to!string);
-        }
-      }
-      debug(nodeheading) {
-        if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-          writeln("* ", _node.to!string);
-        }
-      }
-      assert(_comp_obj_heading_.parent_lev_markup <= 7);
-      assert(_comp_obj_heading_.parent_ocn >= 0);
-      if (lev_markup_number.match(rgx.levels_numbered_headings)) {
-        assert(_comp_obj_heading_.heading_lev_markup <= 7);
-        assert(_comp_obj_heading_.ocn >= 0);
-        if (_comp_obj_heading_.parent_lev_markup > 0) {
-          assert(_comp_obj_heading_.parent_lev_markup < _comp_obj_heading_.heading_lev_markup);
-          if (_comp_obj_heading_.ocn != 0) {
-            assert(_comp_obj_heading_.parent_ocn < _comp_obj_heading_.ocn);
-          }
-        }
-        if (_comp_obj_heading_.heading_lev_markup == 0) {
-          assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_sect_B) {
-          assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_A);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_sect_C) {
-          assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_B);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_sect_D) {
-          assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_sect_C);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_1) {
-          assert(_comp_obj_heading_.parent_lev_markup <= DocStructMarkupHeading.h_sect_D);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_2) {
-          assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_text_1);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_3) {
-          assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_text_2);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_4) {
-          assert(_comp_obj_heading_.parent_lev_markup == DocStructMarkupHeading.h_text_3);
-        } else if  (_comp_obj_heading_.heading_lev_markup == DocStructMarkupHeading.h_text_5) {
-        }
-      }
-      return _comp_obj_heading_;
-    }
-    invariant() {
-    }
-  }
-  /+ abstraction functions emitters ↑ +/
-  /+ ↓ abstraction functions assertions +/
-  auto assertions_doc_structure(O,Lv)(
-    O  an_object,
-    Lv lv
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(an_object) == string[string]));
-      static assert(is(typeof(lv)        == int[string]));
-    }
-    if (lv["h3"] > State.off) {
-      assert(lv["h0"] > State.off);
-      assert(lv["h1"] > State.off);
-      assert(lv["h2"] > State.off);
-    } else if (lv["h2"] > State.off) {
-      assert(lv["h0"] > State.off);
-      assert(lv["h1"] > State.off);
-      assert(lv["h3"] == State.off);
-    } else if (lv["h1"] > State.off) {
-      assert(lv["h0"] > State.off);
-      assert(lv["h2"] == State.off);
-      assert(lv["h3"] == State.off);
-    } else if (lv["h0"] > State.off) {
-      assert(lv["h1"] == State.off);
-      assert(lv["h2"] == State.off);
-      assert(lv["h3"] == State.off);
-    } else {
-      assert(lv["h0"] == State.off);
-      assert(lv["h1"] == State.off);
-      assert(lv["h2"] == State.off);
-      assert(lv["h3"] == State.off);
-    }
-    if (lv["h7"] > State.off) {
-      assert(lv["h4"] > State.off);
-      assert(lv["h5"] > State.off);
-      assert(lv["h6"] > State.off);
-    } else if (lv["h6"] > State.off) {
-      assert(lv["h4"] > State.off);
-      assert(lv["h5"] > State.off);
-      assert(lv["h7"] == State.off);
-    } else if (lv["h5"] > State.off) {
-      assert(lv["h4"] > State.off);
-      assert(lv["h6"] == State.off);
-      assert(lv["h7"] == State.off);
-    } else if (lv["h4"] > State.off) {
-      assert(lv["h5"] == State.off);
-      assert(lv["h6"] == State.off);
-      assert(lv["h7"] == State.off);
-    } else {
-      assert(lv["h4"] == State.off);
-      assert(lv["h5"] == State.off);
-      assert(lv["h6"] == State.off);
-      assert(lv["h7"] == State.off);
-    }
-    if (lv["h0"] == State.off) {
-      assert(lv["h1"] == State.off);
-      assert(lv["h2"] == State.off);
-      assert(lv["h3"] == State.off);
-      assert(lv["h4"] == State.off);
-      assert(lv["h5"] == State.off);
-      assert(lv["h6"] == State.off);
-      assert(lv["h7"] == State.off);
-    }
-    if (lv["h1"] == State.off) {
-      assert(lv["h2"] == State.off);
-      assert(lv["h3"] == State.off);
-    }
-    if (lv["h2"] == State.off) {
-      assert(lv["h3"] == State.off);
-    }
-    if (lv["h3"] == State.off) {
-    }
-    if (lv["h4"] == State.off) {
-      assert(lv["h5"] == State.off);
-      assert(lv["h6"] == State.off);
-      assert(lv["h7"] == State.off);
-    }
-    if (lv["h5"] == State.off) {
-      assert(lv["h6"] == State.off);
-      assert(lv["h7"] == State.off);
-    }
-    if (lv["h6"] == State.off) {
-      assert(lv["h7"] == State.off);
-    }
-    if (lv["h7"] == State.off) {
-    }
-    switch ((an_object["lev"]).to!string) {
-    case "A":
-      if (lv["h0"] == State.off) {
-        assert(lv["h1"] == State.off);
-        assert(lv["h2"] == State.off);
-        assert(lv["h3"] == State.off);
-        assert(lv["h4"] == State.off);
-        assert(lv["h5"] == State.off);
-        assert(lv["h6"] == State.off);
-        assert(lv["h7"] == State.off);
-      } else {                       // (lv["h0"] > State.off)
-        assert(lv["h0"] == State.off,"error should not enter level A a second time");
-      }
-      break;
-    case "B":
-      if (lv["h1"] == State.off) {
-        assert(lv["h0"] > State.off);
-        assert(lv["h2"] == State.off);
-        assert(lv["h3"] == State.off);
-      } else {                       // (lv["h1"] > State.off)
-        assert(lv["h0"] > State.off);
-        assert(lv["h1"] > State.off);
-      }
-      break;
-    case "C":
-      if (lv["h2"] == State.off) {
-        assert(lv["h0"] > State.off);
-        assert(lv["h1"] > State.off);
-        assert(lv["h3"] == State.off);
-      } else {                       // (lv["h2"] > State.off)
-        assert(lv["h0"] > State.off);
-        assert(lv["h1"] > State.off);
-        assert(lv["h2"] > State.off);
-      }
-      break;
-    case "D":
-      if (lv["h3"] == State.off) {
-        assert(lv["h0"] > State.off);
-        assert(lv["h1"] > State.off);
-        assert(lv["h2"] > State.off);
-      } else {                      // (lv["h3"] > State.off)
-        assert(lv["h0"] > State.off);
-        assert(lv["h1"] > State.off);
-        assert(lv["h2"] > State.off);
-        assert(lv["h3"] > State.off);
-      }
-      break;
-    case "1":
-      if (lv["h4"] == State.off) {
-        assert(lv["h0"] > State.off);
-      } else {                      // (lv["h4"] > State.off)
-        assert(lv["h0"] > State.off);
-        assert(lv["h4"] > State.off);
-      }
-      break;
-    case "2":
-      if (lv["h5"] == State.off) {
-        assert(lv["h0"] > State.off);
-        assert(lv["h4"] > State.off);
-      } else {                      // (lv["h5"] > State.off)
-        assert(lv["h0"] > State.off);
-        assert(lv["h4"] > State.off);
-        assert(lv["h5"] > State.off);
-      }
-      break;
-    case "3":
-      if (lv["h6"] == State.off) {
-        assert(lv["h0"] > State.off);
-        assert(lv["h4"] > State.off);
-        assert(lv["h5"] > State.off);
-      } else {                      // (lv["h6"] > State.off)
-        assert(lv["h0"] > State.off);
-        assert(lv["h4"] > State.off);
-        assert(lv["h5"] > State.off);
-        assert(lv["h6"] > State.off);
-      }
-      break;
-    case "4":
-      if (lv["h7"] == State.off) {
-        assert(lv["h0"] > State.off);
-        assert(lv["h4"] > State.off);
-        assert(lv["h5"] > State.off);
-        assert(lv["h6"] > State.off);
-      } else {                      // (lv["h7"] > State.off)
-        assert(lv["h0"] > State.off);
-        assert(lv["h4"] > State.off);
-        assert(lv["h5"] > State.off);
-        assert(lv["h6"] > State.off);
-        assert(lv["h7"] > State.off);
-      }
-      break;
-    default:
-      break;
-    }
-  }
-  auto assertions_flag_types_block_status_none_or_closed(T)(T type) {
-    debug(asserts) {
-      static assert(is(typeof(type) == int[string]));
-    }
-    assert(
-      (type["code"] == TriState.off)
-      || (type["code"] == TriState.closing),
-      "code block status: off or closing");
-    assert(
-      (type["poem"] == TriState.off)
-      || (type["poem"] == TriState.closing),
-      "poem status: off or closing");
-    assert(
-      (type["table"] == TriState.off)
-      || (type["table"] == TriState.closing),
-      "table status: off or closing");
-    assert(
-      (type["group"] == TriState.off)
-      || (type["group"] == TriState.closing),
-      "group block status: off or closing");
-    assert(
-      (type["block"] == TriState.off)
-      || (type["block"] == TriState.closing),
-      "block status: off or closing");
-  }
-  /+ abstraction functions assertions ↑ +/
-} /+ ← closed: template SiSUdocAbstraction +/
-template docSectKeysSeq() {
-  auto docSectKeysSeq(string[][string] document_section_keys_sequenced) {
-    struct doc_sect_keys_seq {
-      auto seg() {
-        return document_section_keys_sequenced["seg"];
-      }
-      auto scroll() {
-        return document_section_keys_sequenced["scroll"];
-      }
-    }
-    return doc_sect_keys_seq();
-  }
-}