xmls segmented heading inline links

1 files changed, 130 insertions, 76 deletions

diff --git a/org/meta_abstraction.org b/org/meta_abstraction.org
index 39bc9eb..2a447bc 100644
--- a/org/meta_abstraction.org
+++ b/org/meta_abstraction.org
@@ -183,8 +183,11 @@ ObjGenericComposite[] the_dom_tail_section;
 string[string] an_object, processing;
 string an_object_key;
 string[] anchor_tags;
+string anchor_tag;
 string anchor_tag_;
 string segment_anchor_tag_that_object_belongs_to;
+string lev_anchor_tag;
+string[][string] tag_assoc;
 string segment_anchor_tag_that_object_belongs_to_uri;
 /+ enum +/
 enum State { off, on }
@@ -412,7 +415,7 @@ 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, image_no_dimensions }
+enum sObj { content, anchor_tag, notes_reg, notes_star, links, image_no_dimensions }
 #+END_SRC
 
 *** scope
@@ -513,6 +516,7 @@ comp_obj_heading_.metainfo.ocn                                 = 0;
 comp_obj_heading_.metainfo.object_number_off                   = "";
 comp_obj_heading_.metainfo.object_number_type                  = 0;
 comp_obj_heading_.tags.segment_anchor_tag                      = "toc";
+comp_obj_heading_.tags.segment_anchor_tag_is                   = comp_obj_heading_.tags.segment_anchor_tag;
 comp_obj_heading_.metainfo.heading_lev_markup                  = 4;
 comp_obj_heading_.metainfo.heading_lev_collapsed               = 1;
 comp_obj_heading_.metainfo.parent_ocn                          = 1;
@@ -600,7 +604,7 @@ debug(srclines) {
 }
 #+END_SRC
 
-*** check whether object_number is on or turned off                 :ocn:
+*** check whether object_number is on or turned off                   :ocn:
 
 #+name: abs_in_loop_body_00
 #+BEGIN_SRC d
@@ -688,6 +692,7 @@ if there is a glossary section you need to:
       comp_obj_heading_.metainfo.object_number_off     = "";
       comp_obj_heading_.metainfo.object_number_type    = 0;
       comp_obj_heading_.tags.segment_anchor_tag        = "_part_glossary";
+      comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup    = 1;
       comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
       comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -705,6 +710,7 @@ if there is a glossary section you need to:
       comp_obj_heading_.metainfo.object_number_off     = "";
       comp_obj_heading_.metainfo.object_number_type    = 0;
       comp_obj_heading_.tags.segment_anchor_tag        = "glossary";
+      comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup    = 4;
       comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
       comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -807,6 +813,7 @@ if there is a blurb section you need to:
       comp_obj_heading_.metainfo.object_number_off                   = "";
       comp_obj_heading_.metainfo.object_number_type                  = 0;
       comp_obj_heading_.tags.segment_anchor_tag                      = "_part_blurb";
+      comp_obj_heading_.tags.segment_anchor_tag_is                   = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup                  = 1;
       comp_obj_heading_.metainfo.heading_lev_collapsed               = 1;
       comp_obj_heading_.metainfo.parent_ocn                          = 1;
@@ -824,6 +831,7 @@ if there is a blurb section you need to:
       comp_obj_heading_.metainfo.object_number_off                   = "";
       comp_obj_heading_.metainfo.object_number_type                  = 0;
       comp_obj_heading_.tags.segment_anchor_tag                      = "blurb";
+      comp_obj_heading_.tags.segment_anchor_tag_is                   = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup                  = 4;
       comp_obj_heading_.metainfo.heading_lev_collapsed               = 2;
       comp_obj_heading_.metainfo.parent_ocn                          = 1;
@@ -844,6 +852,7 @@ if there is a blurb section you need to:
       comp_obj_heading_.metainfo.object_number_off     = "";
       comp_obj_heading_.metainfo.object_number_type    = 0;
       comp_obj_heading_.tags.segment_anchor_tag        = "blurb";
+      comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup    = an_object["lev_markup_number"].to!int;    // make int, remove need to conv
       comp_obj_heading_.metainfo.heading_lev_collapsed = an_object["lev_collapsed_number"].to!int; // make int, remove need to conv
       comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -1159,7 +1168,7 @@ if ((obj_type_status["heading"] == State.on)
   auto substantive_object_and_anchor_tags_tuple
     = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, _new_doc);
   an_object["substantive"] = substantive_object_and_anchor_tags_tuple[sObj.content];
-  anchor_tags = substantive_object_and_anchor_tags_tuple[sObj.anchor_tags];
+  anchor_tag = substantive_object_and_anchor_tags_tuple[sObj.anchor_tag];
   if (_new_doc) {
     cnt1 = 1;
     cnt2 = 1;
@@ -1168,13 +1177,17 @@ if ((obj_type_status["heading"] == State.on)
   }
   if (
     an_object["lev_markup_number"].to!int == 4
-    && anchor_tags.length > 0
+    && !(anchor_tag.empty)
   ) {
-    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];
+    segment_anchor_tag_that_object_belongs_to = anchor_tag;
+    lev_anchor_tag = anchor_tag;
+    tag_assoc[anchor_tag] = [segment_anchor_tag_that_object_belongs_to];
+    segment_anchor_tag_that_object_belongs_to_uri = anchor_tag ~ ".fnSuffix";
+    anchor_tag_ = anchor_tag;
   } else if (an_object["lev_markup_number"].to!int > 4) {
     segment_anchor_tag_that_object_belongs_to = anchor_tag_;
+    lev_anchor_tag = anchor_tag;
+    tag_assoc[anchor_tag] = [segment_anchor_tag_that_object_belongs_to];
     segment_anchor_tag_that_object_belongs_to_uri = anchor_tag_ ~ ".fnSuffix#" ~ obj_cite_digits.on.to!string;
   } else if (an_object["lev_markup_number"].to!int < 4) {
     string segn;
@@ -1205,7 +1218,7 @@ if ((obj_type_status["heading"] == State.on)
   bookindex_unordered_hashes
     = bookindex_extract_hash.bookindex_nugget_hash(an_object["bookindex_nugget"], obj_cite_digits, segment_anchor_tag_that_object_belongs_to);
   /+ (incrementally build toc) table of contents here! +/
-  _anchor_tag=to!string(obj_cite_digits.on);
+  _anchor_tag=obj_cite_digits.on.to!string;
   the_table_of_contents_section = obj_im.table_of_contents_gather_headings(
     an_object,
     conf_make_meta,
@@ -1225,6 +1238,8 @@ if ((obj_type_status["heading"] == State.on)
       an_object["lev_markup_number"],               // string
       an_object["lev_collapsed_number"],            // string
       segment_anchor_tag_that_object_belongs_to,    // string
+      lev_anchor_tag,                               // string
+      tag_assoc,
       obj_cite_digits,                              // OCNset
       cntr,                                         // int
       heading_ptr,                                  // int
@@ -1268,6 +1283,8 @@ if ((obj_type_status["heading"] == State.on)
     = node_construct.node_location_emitter(
       content_non_header,
       segment_anchor_tag_that_object_belongs_to,
+      lev_anchor_tag,
+      tag_assoc,
       obj_cite_digits,
       cntr,
       heading_ptr-1,
@@ -1276,14 +1293,14 @@ if ((obj_type_status["heading"] == State.on)
   auto substantive_obj_misc_tuple
     = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
   an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-  anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+  anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
   comp_obj_para                                             = comp_obj_para.init;
   comp_obj_para.metainfo.is_of_part                         = "body";
   comp_obj_para.metainfo.is_of_section                      = "body";
   comp_obj_para.metainfo.is_of_type                         = "para";
   comp_obj_para.metainfo.is_a                               = "para";
   comp_obj_para.text                                        = an_object["substantive"].to!string.strip;
-  comp_obj_para.tags.segment_anchor_tag                     = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+  comp_obj_para.tags.segment_anchor_tag_is                  = segment_anchor_tag_that_object_belongs_to;
   comp_obj_para.metainfo.ocn                                = obj_cite_digits.digit;
   comp_obj_para.metainfo.object_number_off                  = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
   comp_obj_para.metainfo.o_n_book_index                     = obj_cite_digits.bkidx;
@@ -1291,7 +1308,7 @@ if ((obj_type_status["heading"] == State.on)
   comp_obj_para.attrib.indent_hang                          = indent["hang_position"];
   comp_obj_para.attrib.indent_base                          = indent["base_position"];
   comp_obj_para.attrib.bullet                               = bullet;
-  comp_obj_para.tags.anchor_tags                            = anchor_tags;
+  comp_obj_para.tags.anchor_tags                            = [anchor_tag];
   comp_obj_para.has.inline_notes_reg                        = substantive_obj_misc_tuple[sObj.notes_reg];
   comp_obj_para.has.inline_notes_star                       = substantive_obj_misc_tuple[sObj.notes_star];
   comp_obj_para.has.inline_links                            = substantive_obj_misc_tuple[sObj.links];
@@ -1447,6 +1464,7 @@ if (biblio_ordered.length > 0) {
   comp_obj_heading_.metainfo.object_number_off     = "";
   comp_obj_heading_.metainfo.object_number_type    = 0;
   comp_obj_heading_.tags.segment_anchor_tag        = "_part_bibliography";
+  comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
   comp_obj_heading_.metainfo.heading_lev_markup    = 1;
   comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
   comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -1462,6 +1480,7 @@ if (biblio_ordered.length > 0) {
   comp_obj_heading_.metainfo.object_number_off     = "";
   comp_obj_heading_.metainfo.object_number_type    = 0;
   comp_obj_heading_.tags.segment_anchor_tag        = "bibliography";
+  comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
   comp_obj_heading_.metainfo.heading_lev_markup    = 4;
   comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
   comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -1518,7 +1537,7 @@ foreach (entry; biblio_ordered) {
   comp_obj_para.attrib.indent_hang            = 0;
   comp_obj_para.attrib.indent_base            = 1;
   comp_obj_para.attrib.bullet                 = bullet;
-  comp_obj_para.tags.anchor_tags              = anchor_tags;
+  comp_obj_para.tags.anchor_tags              = [anchor_tag];
   the_bibliography_section                    ~= comp_obj_para;
 }
 #+END_SRC
@@ -1601,6 +1620,7 @@ if (an_object["blurb_nugget"].length == 0) {
   comp_obj_para.metainfo.object_number_off         = "";
   comp_obj_para.metainfo.object_number_type        = 0;
   comp_obj_heading_.tags.segment_anchor_tag        = "";
+  comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
   comp_obj_heading_.metainfo.heading_lev_markup    = 1;
   comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
   comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -1638,7 +1658,7 @@ if (the_endnotes_section.length > 1) {
     "{ %s }%s%s%s",
     "Endnotes",
     mkup.mark_internal_site_lnk,
-    "endnotes",               // segment_anchor_tag_that_object_belongs_to
+    "endnotes",
     ".fnSuffix",
   );
   toc_txt_= munge.url_links(toc_txt_);
@@ -1651,7 +1671,7 @@ if (the_glossary_section.length > 1) {
     "{ %s }%s%s%s",
     "Glossary",
     mkup.mark_internal_site_lnk,
-    "glossary",               // segment_anchor_tag_that_object_belongs_to
+    "glossary",
     ".fnSuffix",
   );
   toc_txt_= munge.url_links(toc_txt_);
@@ -1673,7 +1693,7 @@ if (the_bibliography_section.length > 1){
     "{ %s }%s%s%s",
     "Bibliography",
     mkup.mark_internal_site_lnk,
-    "bibliography",           // segment_anchor_tag_that_object_belongs_to
+    "bibliography",
     ".fnSuffix",
   );
   toc_txt_= munge.url_links(toc_txt_);
@@ -1696,7 +1716,7 @@ if (the_bookindex_section["seg"].length > 1) {
     "{ %s }%s%s%s",
     "Book Index",
     mkup.mark_internal_site_lnk,
-    "bookindex",              // segment_anchor_tag_that_object_belongs_to
+    "bookindex",
     ".fnSuffix",
   );
   toc_txt_= munge.url_links(toc_txt_);
@@ -1720,7 +1740,7 @@ if (the_blurb_section.length > 1) {
     "{ %s }%s%s%s",
     "Blurb",
     mkup.mark_internal_site_lnk,
-    "blurb",                  // segment_anchor_tag_that_object_belongs_to
+    "blurb",
     ".fnSuffix",
   );
   toc_txt_= munge.url_links(toc_txt_);
@@ -1767,7 +1787,7 @@ the_document_head_section ~= the_document_body_section[0];
 the_document_body_section=the_document_body_section[1..$];
 #+END_SRC
 
-*** ↻ *LOOPs* _post main-loop loops_                                     :post:
+*** ↻ *LOOPs* _post main-loop loops_                                :loop:post:
 **** 1. ↻ _Loop as required_ (e.g. backmatter): loop up to lev4, extract html_segnames, set pointers
 
 this extra loop is used/needed to determine pre and (in particular) next segment
@@ -2207,7 +2227,7 @@ auto extract_images(S)(S content_block) {
   }
   return images_;
 }
-string[] segnames_0_4;
+string[] segnames_lv0_to_4;
 #+END_SRC
 
 ****** images: dimensions
@@ -2260,7 +2280,7 @@ foreach (ref obj; the_document_head_section) {
       writeln(obj.text);
     }
     if (obj.metainfo.heading_lev_markup <= 4) {
-      segnames_0_4 ~= obj.tags.segment_anchor_tag;
+      segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
     }
     if (obj.metainfo.heading_lev_markup == 0) {
       /+ TODO second hit (of two) with same assertion failure, check, fix and reinstate
@@ -2296,7 +2316,7 @@ if (the_table_of_contents_section["scroll"].length > 1) {
   foreach (ref obj; the_table_of_contents_section["scroll"]) {
     if (obj.metainfo.is_a == "heading") {
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
@@ -2325,7 +2345,7 @@ if (the_table_of_contents_section["scroll"].length > 1) {
         writeln(obj.text);
       }
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_next = html_segnames[obj.ptr.html_segnames + 1];
           assert(obj.tags.segment_anchor_tag == html_segnames[obj.ptr.html_segnames],
@@ -2357,7 +2377,7 @@ if (the_document_body_section.length > 1) {
         writeln(obj.text);
       }
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.lev4_subtoc = lev4_subtoc[obj.tags.segment_anchor_tag];
           obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
@@ -2408,7 +2428,7 @@ if (the_endnotes_section.length > 1) {
       obj_cite_digits = ocn_emit(OCNstatus.on);
       obj.metainfo.ocn = obj_cite_digits.digit;
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
           if (html_segnames.length > obj.ptr.html_segnames + 1) {
@@ -2450,7 +2470,7 @@ if (the_glossary_section.length > 1) {
       obj_cite_digits = ocn_emit(OCNstatus.on);
       obj.metainfo.ocn = obj_cite_digits.digit;
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
           if (html_segnames.length > obj.ptr.html_segnames + 1) {
@@ -2495,7 +2515,7 @@ if (the_bibliography_section.length > 1) {
       obj_cite_digits = ocn_emit(OCNstatus.on);
       obj.metainfo.ocn = obj_cite_digits.digit;
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
           if (html_segnames.length > obj.ptr.html_segnames + 1) {
@@ -2545,7 +2565,7 @@ if (the_bookindex_section["scroll"].length > 1) {
       obj_cite_digits = ocn_emit(OCNstatus.on);
       obj.metainfo.ocn = obj_cite_digits.on;
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
           if (html_segnames.length > obj.ptr.html_segnames + 1) {
@@ -2583,7 +2603,7 @@ if (the_bookindex_section["scroll"].length > 1) {
       }
       obj.metainfo.ocn = ++ocn_;
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
           if (html_segnames.length > obj.ptr.html_segnames + 1) {
@@ -2631,7 +2651,7 @@ if (the_blurb_section.length > 1) {
       obj_cite_digits = ocn_emit(OCNstatus.on);
       obj.metainfo.ocn = obj_cite_digits.on;
       if (obj.metainfo.heading_lev_markup <= 4) {
-        segnames_0_4 ~= obj.tags.segment_anchor_tag;
+        segnames_lv0_to_4 ~= obj.tags.segment_anchor_tag;
         if (obj.metainfo.heading_lev_markup == 4) {
           obj.tags.segname_prev = html_segnames[obj.ptr.html_segnames - 1];
           if (html_segnames.length > obj.ptr.html_segnames + 1) {
@@ -2862,7 +2882,7 @@ auto sequenced_document_keys = docSectKeysSeq!()(document_section_keys_sequenced
 
 #+name: abs_post
 #+BEGIN_SRC d
-auto segnames = html_segnames.dup;
+auto segnames_lv4 = html_segnames.dup;
 #+END_SRC
 
 *** clean out structure
@@ -2951,8 +2971,9 @@ debug(abstraction) {
 auto t = tuple(
   document_the,
   sequenced_document_keys,
-  segnames,
-  segnames_0_4,
+  segnames_lv4,
+  segnames_lv0_to_4,
+  tag_assoc,
   images,
 );
 return t;
@@ -3002,7 +3023,7 @@ auto _common_reset_(L,O,T)(
 }
 #+END_SRC
 
-*** check object_number status in document                          :ocn:
+*** check object_number status in document                            :ocn:
 
 #+name: abs_functions_ocn_status
 #+BEGIN_SRC d
@@ -3760,7 +3781,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
           auto substantive_obj_misc_tuple
             = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
           an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-          anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+          anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
           comp_obj_block                               = comp_obj_block.init;
           comp_obj_block.metainfo.is_of_part           = "body";
           comp_obj_block.metainfo.is_of_section        = "body";
@@ -3768,7 +3789,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
           comp_obj_block.metainfo.is_a                 = "verse";
           comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
           comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-          comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+          comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
           comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
           comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
           comp_obj_block.text                          = an_object["substantive"];
@@ -3810,6 +3831,8 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
         auto comp_obj_location = node_construct.node_location_emitter(
           content_non_header,
           segment_anchor_tag_that_object_belongs_to,
+          lev_anchor_tag,
+          tag_assoc,
           obj_cite_digits,
           cntr,
           heading_ptr-1,
@@ -3818,7 +3841,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
         auto substantive_obj_misc_tuple
           = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
         an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-        anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+        anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
         comp_obj_block                               = comp_obj_block.init;
         comp_obj_block.metainfo.is_of_part           = "body";
         comp_obj_block.metainfo.is_of_section        = "body";
@@ -3826,7 +3849,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
         comp_obj_block.metainfo.is_a                 = "verse";
         comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
         comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-        comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+        comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
         comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
         comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
         comp_obj_block.text                          = an_object["substantive"];
@@ -3861,7 +3884,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
         auto substantive_obj_misc_tuple
           = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
         an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-        anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+        anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
         comp_obj_block                               = comp_obj_block.init;
         comp_obj_block.metainfo.is_of_part           = "body";
         comp_obj_block.metainfo.is_of_section        = "body";
@@ -3869,7 +3892,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
         comp_obj_block.metainfo.is_a                 = "verse";
         comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
         comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-        comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+        comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
         comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
         comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
         comp_obj_block.text                          = an_object["substantive"];
@@ -3911,6 +3934,8 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
           = node_construct.node_location_emitter(
             content_non_header,
             segment_anchor_tag_that_object_belongs_to,
+            lev_anchor_tag,
+            tag_assoc,
             obj_cite_digits,
             cntr,
             heading_ptr-1,
@@ -3919,7 +3944,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
         auto substantive_obj_misc_tuple
           = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
         an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-        anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+        anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
         comp_obj_block                               = comp_obj_block.init;
         comp_obj_block.metainfo.is_of_part           = "body";
         comp_obj_block.metainfo.is_of_section        = "body";
@@ -3927,7 +3952,7 @@ void _poem_block_(L,O,T,C,N,CMM,Ts)(
         comp_obj_block.metainfo.is_a                 = "verse";
         comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
         comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-        comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+        comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
         comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
         comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
         comp_obj_block.text                          = an_object["substantive"];
@@ -4055,6 +4080,8 @@ void _table_closed_make_special_notation_table_(N,CMM)(
       = node_construct.node_location_emitter(
         content_non_header,
         segment_anchor_tag_that_object_belongs_to,
+        lev_anchor_tag,
+        tag_assoc,
         obj_cite_digits,
         cntr,
         heading_ptr-1,
@@ -4066,7 +4093,7 @@ void _table_closed_make_special_notation_table_(N,CMM)(
     an_object["substantive"]                     = substantive_obj_misc_tuple[sObj.content];
     comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
     comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+    comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
     comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
     comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
     comp_obj_block                               = table_instructions(comp_obj_block, an_object["table_head"]);
@@ -4129,6 +4156,8 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
       = node_construct.node_location_emitter(
         content_non_header,
         segment_anchor_tag_that_object_belongs_to,
+        lev_anchor_tag,
+        tag_assoc,
         obj_cite_digits,
         cntr,
         heading_ptr-1,
@@ -4137,7 +4166,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     auto substantive_obj_misc_tuple
       = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
     an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-    anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+    anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
     comp_obj_block                               = comp_obj_block.init;
     comp_obj_block.metainfo.is_of_part           = "body";
     comp_obj_block.metainfo.is_of_section        = "body";
@@ -4145,7 +4174,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     comp_obj_block.metainfo.is_a                 = "quote";
     comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
     comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+    comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
     comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
     comp_obj_block.metainfo.object_number_type   = obj_cite_digit_type;
     comp_obj_block.text                          = an_object["substantive"];
@@ -4179,6 +4208,8 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
       = node_construct.node_location_emitter(
         content_non_header,
         segment_anchor_tag_that_object_belongs_to,
+        lev_anchor_tag,
+        tag_assoc,
         obj_cite_digits,
         cntr,
         heading_ptr-1,
@@ -4187,7 +4218,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     auto substantive_obj_misc_tuple
       = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
     an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-    anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+    anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
     comp_obj_block                               = comp_obj_block.init;
     comp_obj_block.metainfo.is_of_part           = "body";
     comp_obj_block.metainfo.is_of_section        = "body";
@@ -4195,7 +4226,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     comp_obj_block.metainfo.is_a                 = "group";
     comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
     comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+    comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
     comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
     comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
     comp_obj_block.text                          = an_object["substantive"];
@@ -4229,6 +4260,8 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
       = node_construct.node_location_emitter(
         content_non_header,
         segment_anchor_tag_that_object_belongs_to,
+        lev_anchor_tag,
+        tag_assoc,
         obj_cite_digits,
         cntr,
         heading_ptr-1,
@@ -4244,7 +4277,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     comp_obj_block.metainfo.is_a                 = "block";
     comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
     comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+    comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
     comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
     comp_obj_block.metainfo.object_number_type   = obj_cite_digit_type;
     comp_obj_block.text                          = an_object["substantive"];
@@ -4277,6 +4310,8 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
       = node_construct.node_location_emitter(
         content_non_header,
         segment_anchor_tag_that_object_belongs_to,
+        lev_anchor_tag,
+        tag_assoc,
         obj_cite_digits,
         cntr,
         heading_ptr-1,
@@ -4318,6 +4353,8 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
       = node_construct.node_location_emitter(
         content_non_header,
         segment_anchor_tag_that_object_belongs_to,
+        lev_anchor_tag,
+        tag_assoc,
         obj_cite_digits,
         cntr,
         heading_ptr-1,
@@ -4326,7 +4363,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     auto substantive_obj_misc_tuple
       = obj_im.obj_inline_markup_and_anchor_tags_and_misc(an_object, an_object_key, conf_make_meta, false);
     an_object["substantive"] = substantive_obj_misc_tuple[sObj.content];
-    anchor_tags = substantive_obj_misc_tuple[sObj.anchor_tags];
+    anchor_tag = substantive_obj_misc_tuple[sObj.anchor_tag];
     comp_obj_code                                = comp_obj_code.init;
     comp_obj_code.metainfo.is_of_part            = "body";
     comp_obj_code.metainfo.is_of_section         = "body";
@@ -4334,7 +4371,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     comp_obj_code.metainfo.is_a                  = "code";
     comp_obj_code.metainfo.ocn                   = obj_cite_digits.on;
     comp_obj_code.metainfo.object_number_off     = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_code.tags.segment_anchor_tag        = segment_anchor_tag_that_object_belongs_to.to!string;
+    comp_obj_code.tags.segment_anchor_tag_is     = segment_anchor_tag_that_object_belongs_to;
     comp_obj_code.metainfo.o_n_book_index        = obj_cite_digits.bkidx;
     comp_obj_code.metainfo.object_number_type    = obj_cite_digits.type;
     comp_obj_code.text                           = an_object["substantive"];
@@ -4369,6 +4406,8 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
       = node_construct.node_location_emitter(
         content_non_header,
         segment_anchor_tag_that_object_belongs_to,
+        lev_anchor_tag,
+        tag_assoc,
         obj_cite_digits,
         cntr,
         heading_ptr-1,
@@ -4380,7 +4419,7 @@ void _block_flag_line_empty_(B,N,CMM,Ts)(
     comp_obj_block                               = comp_obj_block.init;
     comp_obj_block.metainfo.ocn                  = obj_cite_digits.on;
     comp_obj_block.metainfo.object_number_off    = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
-    comp_obj_block.tags.segment_anchor_tag       = segment_anchor_tag_that_object_belongs_to.to!string; // TODO
+    comp_obj_block.tags.segment_anchor_tag_is    = segment_anchor_tag_that_object_belongs_to;
     comp_obj_block.metainfo.o_n_book_index       = obj_cite_digits.bkidx;
     comp_obj_block.metainfo.object_number_type   = obj_cite_digits.type;
     comp_obj_block                               = table_instructions(comp_obj_block, an_object["table_head"]);
@@ -5337,7 +5376,7 @@ static struct ObjInlineMarkupMunge {
             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) ~ " ")
+              (mkup.en_a_o ~ n_foot.to!string ~ " ")
             ) ~ "\n";
           } else {
             obj_txt_out ~= n.hit.to!string ~ "\n";
@@ -5659,7 +5698,6 @@ static struct ObjInlineMarkup {
   static auto rgx = Rgx();
   static auto munge = ObjInlineMarkupMunge();
   string[string] obj_txt;
-  static string[] anchor_tags_ = [];
   static string anchor_tag = "";
 #+END_SRC
 
@@ -5685,7 +5723,7 @@ static struct ObjInlineMarkup {
     ? obj_txt["munge"]
     : obj_txt["munge"].strip;
     if (_new_doc) {
-      anchor_tags_ = [];
+      anchor_tag = "";
     }
     auto x = munge.init;
     bool[string] obj_notes_and_links;
@@ -5702,7 +5740,6 @@ static struct ObjInlineMarkup {
       obj_txt["munge"]=_make_segment_anchor_tags_if_none_provided(obj_txt["munge"], obj_["lev"], _new_doc);
       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"]);
       }
@@ -5748,13 +5785,13 @@ static struct ObjInlineMarkup {
     }
     auto t = tuple(
       obj_txt["munge"],
-      anchor_tags_,
+      anchor_tag,
       obj_notes_and_links["notes_reg"],
       obj_notes_and_links["notes_star"],
       obj_notes_and_links["links"],
       obj_notes_and_links["image_no_dimensions"],
     );
-    anchor_tags_=[];
+    anchor_tag = "";
     return t;
   }
   invariant() {
@@ -6089,7 +6126,8 @@ private:
             rgx.heading_marker_missing_tag,
             "$1~" ~ m.captures[1].toLower ~ "_"  ~ m.captures[2] ~ " ");
           if (auto n = munge_.match(rgx.heading_anchor_tag_plus_colon)) {
-            auto tag_remunge_ = n.captures[2].replaceAll(rgx.heading_marker_tag_has_colon, "..");
+            auto tag_remunge_ = n.captures[2]
+              .replaceAll(rgx.heading_marker_tag_has_colon, "..");
             munge_=(munge_).replaceFirst(rgx.heading_anchor_tag_plus_colon, n.captures[1] ~ tag_remunge_ ~ " ");
           }
         } else if (auto m = munge_.match(rgx.heading_extract_unnamed_anchor_tag)) {
@@ -6562,7 +6600,8 @@ struct BookIndexNuggetHash {
           main_term = m.captures[1].strip;
           object_number_offset = m.captures[2].to!int;
           object_number_endpoint=(obj_cite_digits.on + object_number_offset);
-          object_numbers ~= (obj_cite_digits.on.to!string ~ "-" ~ to!string(object_number_endpoint)
+          object_numbers ~= (obj_cite_digits.on.to!string
+          ~ "-" ~ object_number_endpoint.to!string
           ~ ":" ~ segment_anchor_tag);
         } else {
           main_term = bi_main_term_and_rest[0].strip;
@@ -6581,11 +6620,12 @@ struct BookIndexNuggetHash {
               sub_term = m.captures[1].strip;
               object_number_offset = m.captures[2].to!int;
               object_number_endpoint=(obj_cite_digits.on + object_number_offset);
-              object_numbers ~= (obj_cite_digits.on.to!string ~ " - " ~ to!string(object_number_endpoint)
+              object_numbers ~= (obj_cite_digits.on.to!string
+              ~ " - " ~ object_number_endpoint.to!string
               ~ ":" ~ segment_anchor_tag);
             } else {
               sub_term = sub_terms_bits.strip;
-              object_numbers ~= to!string(obj_cite_digits.on)
+              object_numbers ~= obj_cite_digits.on.to!string
               ~ ":" ~ segment_anchor_tag;
             }
             if (!empty(sub_term)) {
@@ -6727,6 +6767,7 @@ struct BookIndexReportSection {
       comp_obj_heading_.metainfo.object_number_off     = "";
       comp_obj_heading_.metainfo.object_number_type    = 0;
       comp_obj_heading_.tags.segment_anchor_tag        = "_part_book_index";
+      comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup    = 1;
       comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
       comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -6745,6 +6786,7 @@ struct BookIndexReportSection {
       comp_obj_heading_.metainfo.object_number_off     = "";
       comp_obj_heading_.metainfo.object_number_type    = 0;
       comp_obj_heading_.tags.segment_anchor_tag        = "bookindex";
+      comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup    = 4;
       comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
       comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -6979,6 +7021,7 @@ struct NotesSection {
       comp_obj_heading_.metainfo.object_number_off     = "";
       comp_obj_heading_.metainfo.object_number_type    = 0;
       comp_obj_heading_.tags.segment_anchor_tag        = "_part_endnotes";
+      comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup    = 1;
       comp_obj_heading_.metainfo.heading_lev_collapsed = 1;
       comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -6995,6 +7038,7 @@ struct NotesSection {
       comp_obj_heading_.metainfo.object_number_off     = "";
       comp_obj_heading_.metainfo.object_number_type    = 0;
       comp_obj_heading_.tags.segment_anchor_tag        = "endnotes";
+      comp_obj_heading_.tags.segment_anchor_tag_is     = comp_obj_heading_.tags.segment_anchor_tag;
       comp_obj_heading_.metainfo.heading_lev_markup    = 4;
       comp_obj_heading_.metainfo.heading_lev_collapsed = 2;
       comp_obj_heading_.metainfo.parent_ocn            = 1;
@@ -7205,9 +7249,11 @@ struct NodeStructureMetadata {
 
 #+name: meta_emitters_metadata
 #+BEGIN_SRC d
-  ObjGenericComposite node_location_emitter(Lv,Ta,N,C,P,I)(
+  ObjGenericComposite node_location_emitter(Lv,Tg,La,Ta,N,C,P,I)(
     Lv lev_markup_number,
-    Ta segment_anchor_tag,
+    Tg segment_anchor_tag,
+    La lev_anchor_tag,
+    Ta tag_assoc,
     N  obj_cite_digits,
     C  cntr_,
     P  ptr_,
@@ -7246,6 +7292,8 @@ struct NodeStructureMetadata {
     comp_obj_location.metainfo.is_a               = is_;
     comp_obj_location.metainfo.ocn                = obj_cite_digits.on;
     comp_obj_location.tags.segment_anchor_tag     = segment_anchor_tag.to!string;
+    comp_obj_location.tags.segment_anchor_tag_is  = comp_obj_location.tags.segment_anchor_tag;
+    comp_obj_location.tags.heading_lev_anchor_tag = lev_anchor_tag;
     comp_obj_location.metainfo.parent_ocn         = p_["object_number"];
     comp_obj_location.metainfo.parent_lev_markup  = p_["lev_markup_number"];
     debug(_node) {
@@ -7268,11 +7316,13 @@ struct NodeStructureMetadata {
 
 #+name: meta_emitters_metadata
 #+BEGIN_SRC d
-  ObjGenericComposite node_emitter_heading(T,Lm,Lc,Ta,N,C,P,LA,I,PSn,fNr,fNs,fL)(
+  ObjGenericComposite node_emitter_heading(T,Lm,Lc,TaB,TaL,TA,N,C,P,LA,I,PSn,fNr,fNs,fL)(
     T   _text,
     Lm  lev_markup_number,
     Lc  lev_collapsed_number,
-    Ta  segment_anchor_tag,
+    TaB segment_anchor_tag_that_object_belongs_to,
+    TaL lev_anchor_tag,
+    TA  tag_assoc,
     N   obj_cite_digits,
     C   cntr_,
     P   ptr_,
@@ -7285,17 +7335,17 @@ struct NodeStructureMetadata {
   )
   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_digits.on)   == int));
-      static assert(is(typeof(cntr_)                == int));
-      static assert(is(typeof(ptr_)                 == int));
-      static assert(is(typeof(lv_ancestors_txt)     == string[]));
-      static assert(is(typeof(is_)                  == string));
-      static assert(is(typeof(html_segnames_ptr)    == int));
+      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_that_object_belongs_to) == string));
+      static assert(is(typeof(obj_cite_digits.on)                        == int));
+      static assert(is(typeof(cntr_)                                     == int));
+      static assert(is(typeof(ptr_)                                      == int));
+      static assert(is(typeof(lv_ancestors_txt)                          == string[]));
+      static assert(is(typeof(is_)                                       == string));
+      static assert(is(typeof(html_segnames_ptr)                         == int));
     }
     assert(is_ == "heading");
     assert((obj_cite_digits.on).to!int >= 0);
@@ -7407,7 +7457,9 @@ struct NodeStructureMetadata {
     _comp_obj_heading_.metainfo.ocn                     = obj_cite_digits.on;
     _comp_obj_heading_.metainfo.object_number_off       = (obj_cite_digits.off==0)   ? "" : obj_cite_digits.off.to!string;
     _comp_obj_heading_.metainfo.object_number_type      = obj_cite_digits.type;
-    _comp_obj_heading_.tags.segment_anchor_tag          = segment_anchor_tag.to!string;
+    _comp_obj_heading_.tags.segment_anchor_tag          = segment_anchor_tag_that_object_belongs_to;
+    _comp_obj_heading_.tags.heading_lev_anchor_tag      = lev_anchor_tag;
+    _comp_obj_heading_.tags.segment_anchor_tag_is       = segment_anchor_tag_that_object_belongs_to;
     _comp_obj_heading_.metainfo.heading_lev_markup      = (!(lev_markup_number.empty) ? lev_markup_number.to!int : 0);
     _comp_obj_heading_.metainfo.heading_lev_collapsed   = (!(lev_collapsed_number.empty) ? lev_collapsed_number.to!int : 0);
     _comp_obj_heading_.metainfo.parent_ocn              = p_["object_number"];
@@ -7848,6 +7900,8 @@ struct DocObj_Pointer_ {
 struct DocObj_Tags_ {
   string[]               heading_ancestors_text              = [ "", "", "", "", "", "", "", "", ]; // TODO redundant? see markedup and collapsed ancestors DONE
   string                 segment_anchor_tag                  = "";
+  string                 segment_anchor_tag_is               = "";
+  string                 heading_lev_anchor_tag              = "";
   string                 segname_prev                        = "";
   string                 segname_next                        = "";
   string[]               lev4_subtoc                         = [];