0.9.3 start work on node pointers, a way to go

11 files changed, 465 insertions, 526 deletions

diff --git a/org/ao_abstract_doc_source.org b/org/ao_abstract_doc_source.org
index c5535fd..cec9f08 100644
--- a/org/ao_abstract_doc_source.org
+++ b/org/ao_abstract_doc_source.org
@@ -49,7 +49,7 @@ ObjComposite[] the_document_head_section, the_document_body_section, the_bibliog
 string[string] an_object, processing;
 string an_object_key;
 string[] anchor_tags;
-string segment_object_belongs_to;
+string segment_anchor_tag_that_object_belongs_to;
 auto set_abstract_object = ObjectAbstractSet();
 auto note_section = NotesSection();
 /+ enum +/
@@ -75,9 +75,12 @@ string biblio_entry_str_json;
 JSONValue[] bib_arr_json;
 int bib_entry;
 /+ counters +/
-long counter, previous_count, previous_length;
+long cntr, previous_count, previous_length;
 int[string] line_occur;
-int verse_line, heading_pointer;
+int verse_line, heading_ptr;
+string[] html_segnames=[];
+uint html_segnames_ptr=0;
+uint html_segnames_ptr_cntr=0;
 /+ paragraph attributes +/
 int[string] indent;
 bool bullet = true;
@@ -153,7 +156,7 @@ int[string] lv = [
   "h5" : State.off,
   "h6" : State.off,
   "h7" : State.off,
-  "lev_collapsed_number" : 0,
+  "lev_int_collapsed" : 0,
 ];
 int[string] collapsed_lev = [
   "h0" : State.off,
@@ -196,8 +199,8 @@ auto toc_head =
     0,                   // obj_cite_number
     ["toc"],             // anchor tag
     "1",                 // lev
-    4,                   // lev_markup_number
-    2,                   // lev_collapsed_number
+    4,                   // lev_int_markup
+    2,                   // lev_int_collapsed
   );
 the_table_of_contents_section = [
   "seg": [toc_head],
@@ -326,8 +329,8 @@ if there is a glossary section you need to:
           0,                // obj_cite_number
           [""],             // anchor tag
           "B",              // lev
-          1,                // lev_markup_number
-          1,                // lev_collapsed_number
+          1,                // lev_int_markup
+          1,                // lev_int_collapsed
         );
       the_glossary_section ~=
         set_abstract_object.contents_heading(
@@ -336,8 +339,8 @@ if there is a glossary section you need to:
           0,                // obj_cite_number
           ["glossary"],     // anchor tag
           "1",              // lev
-          4,                // lev_markup_number
-          2,                // lev_collapsed_number
+          4,                // lev_int_markup
+          2,                // lev_int_collapsed
         );
     // } else if (matchFirst(line, rgx.heading)) {
     //   _heading_matched_(line, line_occur, an_object, an_object_key, lv, collapsed_lev, type, dochead_meta_aa); // levels?
@@ -400,8 +403,8 @@ if there is a blurb section you need to:
           0,                // obj_cite_number
           [""],             // anchor tag
           "B",              // lev
-          1,                // lev_markup_number
-          1,                // lev_collapsed_number
+          1,                // lev_int_markup
+          1,                // lev_int_collapsed
         );
       the_blurb_section ~=
         set_abstract_object.contents_heading(
@@ -410,8 +413,8 @@ if there is a blurb section you need to:
           0,                // obj_cite_number
           ["blurb"],        // anchor tag
           "1",              // lev
-          4,                // lev_markup_number
-          2,                // lev_collapsed_number
+          4,                // lev_int_markup
+          2,                // lev_int_collapsed
         );
     } else if ((matchFirst(line, rgx.heading))
       && (opt_action_bool["backmatter"] && opt_action_bool["section_blurb"])) {
@@ -450,7 +453,7 @@ if there is a blurb section you need to:
 #+BEGIN_SRC d
 } else if (type["poem"] == TriState.on) {
   /+ within block object: poem +/
-  _poem_block_(line, an_object, type, counter, obj_cite_number_poem, dochead_make_aa);
+  _poem_block_(line, an_object, type, cntr, obj_cite_number_poem, dochead_make_aa);
   continue;
 #+END_SRC
 
@@ -585,7 +588,7 @@ if ((matchFirst(line, rgx.book_index))
       set_abstract_object.contents_comment(strip(an_object[an_object_key]));
     _common_reset_(line_occur, an_object, type);
     processing.remove("verse");
-    ++counter;
+    ++cntr;
 #+END_SRC
 
 ******** flag not set & line not exist: heading or para   :heading:paragraph:
@@ -666,7 +669,7 @@ _block_flag_line_empty_(
   bookindex_unordered_hashes,
   obj_cite_number,
   _node,
-  counter,
+  cntr,
   type,
   obj_cite_number_poem,
   dochead_make_aa
@@ -708,34 +711,40 @@ if ((type["heading"] == State.on)
   an_object["substantive"] = substantive_object_and_anchor_tags_tuple[0];
   anchor_tags = substantive_object_and_anchor_tags_tuple[1];
   if (to!int(an_object["lev_markup_number"]) == 4) {
-    segment_object_belongs_to = anchor_tags[0];
+    segment_anchor_tag_that_object_belongs_to = anchor_tags[0];
   } else if (to!int(an_object["lev_markup_number"]) < 4) {
-    segment_object_belongs_to = "";
+    segment_anchor_tag_that_object_belongs_to = "";
   }
   _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_object_belongs_to,
+    segment_anchor_tag_that_object_belongs_to,
     _anchor_tag,
     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++;
+  }
   _node =
     node_construct.node_emitter_heading(
       an_object["lev_markup_number"],
       an_object["lev_collapsed_number"],
-      segment_object_belongs_to,
+      segment_anchor_tag_that_object_belongs_to,
       obj_cite_number,
-      counter,
-      heading_pointer,
-      an_object["is"]
+      cntr,
+      heading_ptr,
+      an_object["is"],
+      html_segnames_ptr,
     ); // heading
   an_object["attrib"] =
     obj_att.obj_attributes(an_object["is"], an_object[an_object_key], _node);
-  ++heading_pointer;
+  ++heading_ptr;
   debug(segments) {
     writeln(an_object["lev_markup_number"]);
-    writeln(segment_object_belongs_to);
+    writeln(segment_anchor_tag_that_object_belongs_to);
   }
   the_document_body_section ~=
     set_abstract_object.contents_heading(
@@ -755,7 +764,7 @@ if ((type["heading"] == State.on)
   an_object.remove("lev");
   an_object.remove("lev_markup_number");
   processing.remove("verse");
-  ++counter;
+  ++cntr;
 #+END_SRC
 
 ******* paragraph object                                   :paragraph:object:
@@ -773,11 +782,11 @@ if ((type["heading"] == State.on)
   _node =
     node_construct.node_emitter(
       content_non_header,
-      segment_object_belongs_to,
+      segment_anchor_tag_that_object_belongs_to,
       obj_cite_number,
-      counter,
-      heading_pointer-1,
-      an_object["is"]
+      cntr,
+      heading_ptr-1,
+      an_object["is"],
     );
   auto substantive_object_and_anchor_tags_tuple =
     obj_im.obj_inline_markup_and_anchor_tags(an_object, an_object_key, dochead_make_aa); // ...
@@ -801,7 +810,7 @@ if ((type["heading"] == State.on)
   ];
   bullet = false;
   processing.remove("verse");
-  ++counter;
+  ++cntr;
 } else {
   assert(
     line == null,
@@ -825,7 +834,7 @@ if (the_document_body_section.length > 0) {
   && (the_document_body_section.length > previous_length)
 ) {
     if ((the_document_body_section[$-1].is_a == "heading")
-    && (the_document_body_section[$-1].heading_attrib.lev_markup_number < 5)) {
+    && (the_document_body_section[$-1].heading_attrib.lev_int_markup < 5)) {
       type["biblio_section"] = State.off;
       type["glossary_section"] = State.off;
       type["blurb_section"] = State.off;
@@ -838,8 +847,8 @@ if (the_document_body_section.length > 0) {
       previous_count=the_document_body_section.length -1;
       note_section.gather_notes_for_endnote_section(
         the_document_body_section,
-        segment_object_belongs_to,
-        the_document_body_section.length-1
+        segment_anchor_tag_that_object_belongs_to,
+        the_document_body_section.length-1,
       );
     }
   }
@@ -901,8 +910,8 @@ if (an_object["glossary_nugget"].length == 0) {
       0,                // obj_cite_number
       [""],             // anchor tag
       "B",              // lev
-      1,                // lev_markup_number
-      1,                // lev_collapsed_number
+      1,                // lev_int_markup
+      1,                // lev_int_collapsed
     );
 } else {
   writeln("gloss");
@@ -935,8 +944,8 @@ if (biblio_ordered.length > 0) {
       0,                // obj_cite_number
       [""],             // anchor tag
       "B",              // lev
-      1,                // lev_markup_number
-      1,                // lev_collapsed_number
+      1,                // lev_int_markup
+      1,                // lev_int_collapsed
     );
   the_bibliography_section ~=
     set_abstract_object.contents_heading(
@@ -945,8 +954,8 @@ if (biblio_ordered.length > 0) {
       0,                // obj_cite_number
       ["bibliography"], // anchor tag
       "1",              // lev
-      4,                // lev_markup_number
-      2,                // lev_collapsed_number
+      4,                // lev_int_markup
+      2,                // lev_int_collapsed
     );
 } else {
   the_bibliography_section ~=
@@ -956,8 +965,8 @@ if (biblio_ordered.length > 0) {
       0,                // obj_cite_number
       [""],             // anchor tag
       "B",              // lev
-      1,                // lev_markup_number
-      1,                // lev_collapsed_number
+      1,                // lev_int_markup
+      1,                // lev_int_collapsed
     );
 }
 #+END_SRC
@@ -1044,7 +1053,7 @@ auto bi_tuple =
   bi.bookindex_build_section(
     bookindex_unordered_hashes,
     obj_cite_number,
-    segment_object_belongs_to,
+    segment_anchor_tag_that_object_belongs_to,
     opt_action_bool,
   );
 static assert(!isTypeTuple!(bi_tuple));
@@ -1070,8 +1079,8 @@ if (an_object["blurb_nugget"].length == 0) {
       0,                // obj_cite_number
       [""],             // anchor tag
       "B",              // lev
-      1,                // lev_markup_number
-      1,                // lev_collapsed_number
+      1,                // lev_int_markup
+      1,                // lev_int_collapsed
     );
 } else {
   writeln("blurb");
@@ -1096,7 +1105,7 @@ if (the_endnotes_section["seg"].length > 1) {
   toc_txt_ = format(
     "{ %s }../%s.fn_suffix",
     "Endnotes",
-    "endnotes",            // segment_object_belongs_to
+    "endnotes",            // segment_anchor_tag_that_object_belongs_to
   );
   toc_txt_= munge.url_links(toc_txt_);
   the_table_of_contents_section["seg"] ~=
@@ -1130,7 +1139,7 @@ if (the_glossary_section.length > 1) {
   toc_txt_ = format(
     "{ %s }../%s.fn_suffixs",
     "Glossary",
-    "glossary",  // segment_object_belongs_to
+    "glossary",  // segment_anchor_tag_that_object_belongs_to
   );
   toc_txt_= munge.url_links(toc_txt_);
   the_table_of_contents_section["seg"] ~=
@@ -1162,7 +1171,7 @@ if (the_bibliography_section.length > 1){
   toc_txt_ = format(
     "{ %s }../%s.fn_suffix",
     "Bibliography",
-    "bibliography",        // segment_object_belongs_to
+    "bibliography",        // segment_anchor_tag_that_object_belongs_to
   );
   toc_txt_= munge.url_links(toc_txt_);
   the_table_of_contents_section["seg"] ~=
@@ -1194,7 +1203,7 @@ if (the_bookindex_section["seg"].length > 1) {
   toc_txt_ = format(
     "{ %s }../%s.fn_suffix",
     "Book Index",
-    "bookindex",          // segment_object_belongs_to
+    "bookindex",          // segment_anchor_tag_that_object_belongs_to
   );
   toc_txt_= munge.url_links(toc_txt_);
   the_table_of_contents_section["seg"] ~=
@@ -1228,7 +1237,7 @@ if (the_blurb_section.length > 1) {
   toc_txt_ = format(
     "{ %s }../%s.fn_suffix",
     "Blurb",
-    "blurb",                // segment_object_belongs_to
+    "blurb",                // segment_anchor_tag_that_object_belongs_to
   );
   toc_txt_= munge.url_links(toc_txt_);
   the_table_of_contents_section["seg"] ~=
@@ -1303,8 +1312,7 @@ destroy(the_bookindex_section);
 #+BEGIN_SRC d
 auto t = tuple(
   document_the,
-  bookindex_unordered_hashes,
-  biblio_ordered
+  html_segnames,
 );
 return t;
 #+END_SRC
@@ -1825,7 +1833,7 @@ void _poem_block_(
   char[] line,
   ref string[string] an_object,
   ref int[string] type,
-  ref long counter,
+  ref long cntr,
   string[string] obj_cite_number_poem,
   string[string][string] dochead_make_aa,
 ) {
@@ -1872,7 +1880,7 @@ void _poem_block_(
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
       }
       obj_cite_number_poem["end"] =
         to!string(obj_cite_number);
@@ -1903,10 +1911,10 @@ void _poem_block_(
         an_object["is"] = "verse";
         _node = node_construct.node_emitter(
           content_non_header,
-          segment_object_belongs_to,
+          segment_anchor_tag_that_object_belongs_to,
           obj_cite_number,
-          counter,
-          heading_pointer-1,
+          cntr,
+          heading_ptr-1,
           an_object["is"]
         );
         auto substantive_object_and_anchor_tags_tuple =
@@ -1924,7 +1932,7 @@ void _poem_block_(
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
       }
     }
   } else if (type["tic_poem"] == TriState.on) {
@@ -1962,7 +1970,7 @@ void _poem_block_(
         obj_cite_number_poem["end"] = to!string(obj_cite_number);
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
       }
       type["blocks"] = TriState.closing;
       type["poem"] = TriState.closing;
@@ -1992,10 +2000,10 @@ void _poem_block_(
         _node =
           node_construct.node_emitter(
             content_non_header,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             obj_cite_number,
-            counter,
-            heading_pointer-1,
+            cntr,
+            heading_ptr-1,
             an_object["is"]
           );
         auto substantive_object_and_anchor_tags_tuple =
@@ -2013,7 +2021,7 @@ void _poem_block_(
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
       }
     }
   }
@@ -2195,7 +2203,7 @@ void _block_flag_line_empty_(
   ref string[][string][string] bookindex_unordered_hashes,
   ref int obj_cite_number,
   ref string _node,
-  ref long counter,
+  ref long cntr,
   ref int[string] type,
   string[string] obj_cite_number_poem,
   string[string][string] dochead_make_aa,
@@ -2221,10 +2229,10 @@ void _block_flag_line_empty_(
     _node =
       node_construct.node_emitter(
         content_non_header,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
         obj_cite_number,
-        counter,
-        heading_pointer-1,
+        cntr,
+        heading_ptr-1,
         an_object["is"]
       );
     auto substantive_object_and_anchor_tags_tuple =
@@ -2242,7 +2250,7 @@ void _block_flag_line_empty_(
       );
     object_reset(an_object);
     processing.remove("verse");
-    ++counter;
+    ++cntr;
     type["blocks"] = TriState.off;
     type["code"] = TriState.off;
   } else if (type["poem"] == TriState.closing) {
@@ -2254,10 +2262,10 @@ void _block_flag_line_empty_(
     _node =
       node_construct.node_emitter(
         content_non_header,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
         obj_cite_number,
-        counter,
-        heading_pointer-1,
+        cntr,
+        heading_ptr-1,
         an_object["is"]
       );
     the_document_body_section ~=
@@ -2282,10 +2290,10 @@ void _block_flag_line_empty_(
     _node =
       node_construct.node_emitter(
         content_non_header,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
         obj_cite_number,
-        counter,
-        heading_pointer-1,
+        cntr,
+        heading_ptr-1,
         an_object["is"]
       );
     auto substantive_object_and_anchor_tags_tuple =
@@ -2303,7 +2311,7 @@ void _block_flag_line_empty_(
       );
     object_reset(an_object);
     processing.remove("verse");
-    ++counter;
+    ++cntr;
     type["blocks"] = TriState.off;
     type["table"] = TriState.off;
   } else if (type["group"] == TriState.closing) {
@@ -2317,10 +2325,10 @@ void _block_flag_line_empty_(
     _node =
       node_construct.node_emitter(
         content_non_header,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
         obj_cite_number,
-        counter,
-        heading_pointer-1,
+        cntr,
+        heading_ptr-1,
         an_object["is"]
       );
     auto substantive_object_and_anchor_tags_tuple =
@@ -2338,7 +2346,7 @@ void _block_flag_line_empty_(
       );
     object_reset(an_object);
     processing.remove("verse");
-    ++counter;
+    ++cntr;
     type["blocks"] = TriState.off;
     type["group"] = TriState.off;
   } else if (type["block"] == TriState.closing) {
@@ -2351,10 +2359,10 @@ void _block_flag_line_empty_(
     _node =
       node_construct.node_emitter(
         content_non_header,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
         obj_cite_number,
-        counter,
-        heading_pointer-1,
+        cntr,
+        heading_ptr-1,
         an_object["is"]
        );
     auto substantive_object_and_anchor_tags_tuple =
@@ -2372,7 +2380,7 @@ void _block_flag_line_empty_(
       );
     object_reset(an_object);
     processing.remove("verse");
-    ++counter;
+    ++cntr;
     type["blocks"] = TriState.off;
     type["block"] = TriState.off;
   } else if (type["quote"] == TriState.closing) {
@@ -2386,10 +2394,10 @@ void _block_flag_line_empty_(
     _node =
       node_construct.node_emitter(
         content_non_header,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
         obj_cite_number,
-        counter,
-        heading_pointer-1,
+        cntr,
+        heading_ptr-1,
         an_object["is"]
       );
     auto substantive_object_and_anchor_tags_tuple =
@@ -2407,7 +2415,7 @@ void _block_flag_line_empty_(
       );
     object_reset(an_object);
     processing.remove("verse");
-    ++counter;
+    ++cntr;
     type["blocks"] = TriState.off;
     type["quote"] = TriState.off;
   }
@@ -3184,7 +3192,7 @@ struct ObjInlineMarkup {
   auto table_of_contents_gather_headings(
     string[string] obj_,
     string[string][string] dochead_make_aa,
-    string segment_object_belongs_to,
+    string segment_anchor_tag_that_object_belongs_to,
     string _anchor_tag,
     ObjComposite[][string] the_table_of_contents_section,
   )
@@ -3279,7 +3287,7 @@ struct ObjInlineMarkup {
       toc_txt_ = format(
         "{ %s }../%s.fn_suffix",
         heading_toc_,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
       );
       toc_txt_= munge.url_links(toc_txt_);
       indent=[
@@ -3300,7 +3308,7 @@ struct ObjInlineMarkup {
       toc_txt_ = format(
         "{ %s }../%s.fn_suffix#%s",
         heading_toc_,
-        segment_object_belongs_to,
+        segment_anchor_tag_that_object_belongs_to,
         _anchor_tag,
       );
       toc_txt_= munge.url_links(toc_txt_);
@@ -3816,10 +3824,10 @@ struct ObjAttributes {
       oa_j.object["obj_cite_number"] = node_j["obj_cite_number"];
       oa_j.object["lev_markup_number"] = node_j["lev_markup_number"];
       oa_j.object["lev_collapsed_number"] = node_j["lev_collapsed_number"];
-      oa_j.object["heading_pointer"] =
-        node_j["heading_pointer"]; // check
-      oa_j.object["doc_object_pointer"] =
-        node_j["doc_object_pointer"]; // check
+      oa_j.object["heading_ptr"] =
+        node_j["heading_ptr"]; // check
+      oa_j.object["doc_object_ptr"] =
+        node_j["doc_object_ptr"]; // check
     }
     oa_j.object["parent_obj_cite_number"] = node_j["parent_obj_cite_number"];
     oa_j.object["parent_lev_markup_number"] = node_j["parent_lev_markup_number"];
@@ -3994,12 +4002,12 @@ struct BookIndexReportSection {
   auto bookindex_build_section(
     string[][string][string] bookindex_unordered_hashes,
     int                      obj_cite_number,
-    string                   segment_object_belongs_to,
+    string                   segment_anchor_tag_that_object_belongs_to,
     bool[string]             opt_action_bool,
   ) {
     string type;
     string lev;
-    int lev_markup_number, lev_collapsed_number;
+    int lev_int_markup, lev_int_collapsed;
     string attrib;
     int[string] indent;
     auto set_abstract_object = ObjectAbstractSet();
@@ -4011,8 +4019,8 @@ struct BookIndexReportSection {
       string bi_tmp_seg, bi_tmp_scroll;
       attrib="";
       lev="B";
-      lev_markup_number=1;
-      lev_collapsed_number=1;
+      lev_int_markup=1;
+      lev_int_collapsed=1;
       bookindex_section["scroll"] ~=
         set_abstract_object.contents_heading(
           "Book Index",
@@ -4020,8 +4028,8 @@ struct BookIndexReportSection {
           obj_cite_number,
           [],
           to!string(lev),
-          lev_markup_number,
-          lev_collapsed_number
+          lev_int_markup,
+          lev_int_collapsed
         );
       bookindex_section["seg"] ~=
         set_abstract_object.contents_heading(
@@ -4030,16 +4038,16 @@ struct BookIndexReportSection {
           obj_cite_number,
           [],
           to!string(lev),
-          lev_markup_number,
-          lev_collapsed_number
+          lev_int_markup,
+          lev_int_collapsed
         );
       ++obj_cite_number;
       ++mkn;
       // 1~ Index
       attrib="";
       lev="1";
-      lev_markup_number=4;
-      lev_collapsed_number=2;
+      lev_int_markup=4;
+      lev_int_collapsed=2;
       bookindex_section["scroll"] ~=
         set_abstract_object.contents_heading(
           "Index",
@@ -4047,8 +4055,8 @@ struct BookIndexReportSection {
           obj_cite_number,
           ["book_index"],
           to!string(lev),
-          lev_markup_number,
-          lev_collapsed_number
+          lev_int_markup,
+          lev_int_collapsed
         );
       bookindex_section["seg"] ~=
         set_abstract_object.contents_heading(
@@ -4057,8 +4065,8 @@ struct BookIndexReportSection {
           obj_cite_number,
           ["book_index"],
           to!string(lev),
-          lev_markup_number,
-          lev_collapsed_number
+          lev_int_markup,
+          lev_int_collapsed
         );
       ++obj_cite_number;
       ++mkn;
@@ -4068,9 +4076,9 @@ struct BookIndexReportSection {
         foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
           auto go = replaceAll(ref_, rgx.book_index_go, "$1");
           bi_tmp_scroll ~= munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ");
-          bi_tmp_seg ~= (segment_object_belongs_to.empty)
+          bi_tmp_seg ~= (segment_anchor_tag_that_object_belongs_to.empty)
           ? munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ")
-          : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
+          : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_anchor_tag_that_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
         }
         bi_tmp_scroll ~= " \\\\\n    ";
         bi_tmp_seg ~= " \\\\\n    ";
@@ -4083,9 +4091,9 @@ struct BookIndexReportSection {
           foreach (ref_; bookindex_unordered_hashes[mainkey][subkey]) {
             auto go = replaceAll(ref_, rgx.book_index_go, "$1");
             bi_tmp_scroll ~= munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ");
-            bi_tmp_seg ~= (segment_object_belongs_to.empty)
+            bi_tmp_seg ~= (segment_anchor_tag_that_object_belongs_to.empty)
             ? munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ")
-            : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
+            : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_anchor_tag_that_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
           }
           bi_tmp_scroll ~= " \\\\\n    ";
           bi_tmp_seg ~= " \\\\\n    ";
@@ -4171,20 +4179,20 @@ struct NotesSection {
 #+BEGIN_SRC d
   private auto gather_notes_for_endnote_section(
     ObjComposite[] contents_am,
-    string         segment_object_belongs_to,
-    ulong          counter,
+    string         segment_anchor_tag_that_object_belongs_to,
+    ulong          cntr,
   )
   in {
     // endnotes/ footnotes for
     // doc objects other than paragraphs & headings
     // various forms of grouped text
-    assert((contents_am[counter].is_a == "para")
-    || (contents_am[counter].is_a == "heading")
-    || (contents_am[counter].is_a == "group"));
-    assert(counter >= previous_count);
-    previous_count=counter;
+    assert((contents_am[cntr].is_a == "para")
+    || (contents_am[cntr].is_a == "heading")
+    || (contents_am[cntr].is_a == "group"));
+    assert(cntr >= previous_count);
+    previous_count=cntr;
     assert(
-      match(contents_am[counter].object,
+      match(contents_am[cntr].object,
       rgx.inline_notes_delimiter_al_regular_number_note)
     );
   }
@@ -4193,24 +4201,24 @@ struct NotesSection {
     foreach(
       m;
       matchAll(
-        contents_am[counter].object,
+        contents_am[cntr].object,
         rgx.inline_notes_delimiter_al_regular_number_note
       )
     ) {
       debug(endnotes_build) {
         writeln(
-          "{^{", m.captures[1], ".}^}../", segment_object_belongs_to, ".fn_suffix#noteref_\n  ", m.captures[1], " ",
+          "{^{", m.captures[1], ".}^}../", segment_anchor_tag_that_object_belongs_to, ".fn_suffix#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["seg"] ~= (segment_object_belongs_to.empty)
+      object_notes["seg"] ~= (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] ~ ".}^}../" ~ segment_object_belongs_to ~ ".fn_suffix#noteref_" ~
+          "{^{" ~ m.captures[1] ~ ".}^}../" ~ segment_anchor_tag_that_object_belongs_to ~ ".fn_suffix#noteref_" ~
           m.captures[1]) ~ " " ~ m.captures[2] ~ "』"
         );
       object_notes["scroll"] ~=
@@ -4391,11 +4399,11 @@ struct Bibliography {
       writeln("json:                ", bib_arr_json.length);
       writeln("unsorted:            ", biblio_unsorted.length);
       writeln("sorted:              ", biblio_sorted__.length);
-      int counter;
+      int cntr;
       int[7] x;
-      while (counter < x.length) {
-        writeln(counter, ": ", biblio_sorted__[counter]["fulltitle"]);
-        counter++;
+      while (cntr < x.length) {
+        writeln(cntr, ": ", biblio_sorted__[cntr]["fulltitle"]);
+        cntr++;
       }
     }
     return biblio_sorted__;
@@ -4499,9 +4507,9 @@ struct NodeStructureMetadata {
   string node_emitter(
     string lev_markup_number,
     string segment_anchor_tag,
-    int obj_cite_number_,
-    long counter_,
-    int pointer_,
+    int    obj_cite_number_,
+    long   cntr_,
+    int    ptr_,
     string is_
   )
   in {
@@ -4527,20 +4535,20 @@ struct NodeStructureMetadata {
       p_["obj_cite_number"] = lv4;
     }
     _node=("{ " ~
-      "\"is\": \"" ~ is_ ~ "\"" ~
-      ", \"heading_pointer\": " ~ to!string(pointer_) ~
-      ", \"doc_object_pointer\": " ~ to!string(counter_) ~
-      ", \"obj_cite_number\": " ~ to!string(obj_cite_number_) ~
-      ", \"segment_anchor_tag\": \"" ~ segment_anchor_tag ~ "\"" ~
-      ", \"parent_obj_cite_number\": " ~ to!string(p_["obj_cite_number"]) ~
+      "\"is\": \""                       ~ is_ ~ "\"" ~
+      ", \"heading_ptr\": "          ~ to!string(ptr_) ~
+      ", \"doc_object_ptr\": "       ~ to!string(cntr_) ~
+      ", \"obj_cite_number\": "          ~ to!string(obj_cite_number_) ~
+      ", \"segment_anchor_tag\": \""     ~ segment_anchor_tag ~ "\"" ~
+      ", \"parent_obj_cite_number\": "   ~ to!string(p_["obj_cite_number"]) ~
       ", \"parent_lev_markup_number\": " ~ to!string(p_["lev_markup_number"]) ~
       " }"
     );
     debug(node) {
       if (match(lev_markup_number, rgx.levels_numbered_headings)) {
-        writeln("* ", to!string(_node));
+        writeln("x ", to!string(_node));
       } else {
-        writeln("* ", to!string(_node));
+        writeln("- ", to!string(_node));
       }
     }
     JSONValue j = parseJSON(_node);
@@ -4561,10 +4569,11 @@ struct NodeStructureMetadata {
     string lev_markup_number,
     string lev_collapsed_number,
     string segment_anchor_tag,
-    int obj_cite_number_,
-    long counter_,
-    int pointer_,
-    string is_
+    int    obj_cite_number_,
+    long   cntr_,
+    int    ptr_,
+    string is_,
+    uint html_segnames_ptr,
   )
   in {
     auto rgx = Rgx();
@@ -4583,15 +4592,15 @@ struct NodeStructureMetadata {
   body {
     auto rgx = Rgx();
     int obj_cite_number = to!int(obj_cite_number_);
-    switch (lev_markup_number) { // switch (to!string(lv)) {
-    case "0":
+    switch (to!int(lev_markup_number)) { // switch (to!string(lv)) {
+    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":
+    case 1:
       lv = DocStructMarkupHeading.h_sect_B;
       lv1 = obj_cite_number;
       lv2=0; lv3=0; lv4=0; lv5=0; lv6=0; lv7=0;
@@ -4599,7 +4608,7 @@ struct NodeStructureMetadata {
         DocStructMarkupHeading.h_sect_A;
       p_["obj_cite_number"] = lv0;
       break;
-    case "2":
+    case 2:
       lv = DocStructMarkupHeading.h_sect_C;
       lv2 = obj_cite_number;
       lv3=0; lv4=0; lv5=0; lv6=0; lv7=0;
@@ -4607,7 +4616,7 @@ struct NodeStructureMetadata {
         DocStructMarkupHeading.h_sect_B;
       p_["obj_cite_number"] = lv1;
       break;
-    case "3":
+    case 3:
       lv = DocStructMarkupHeading.h_sect_D;
       lv3=obj_cite_number;
       lv4=0; lv5=0; lv6=0; lv7=0;
@@ -4615,7 +4624,7 @@ struct NodeStructureMetadata {
         DocStructMarkupHeading.h_sect_C;
       p_["obj_cite_number"] = lv2;
       break;
-    case "4":
+    case 4:
       lv = DocStructMarkupHeading.h_text_1;
       lv4 = obj_cite_number;
       lv5=0; lv6=0; lv7=0;
@@ -4637,7 +4646,7 @@ struct NodeStructureMetadata {
         p_["obj_cite_number"] = lv0;
       }
       break;
-    case "5":
+    case 5:
       lv = DocStructMarkupHeading.h_text_2;
       lv5 = obj_cite_number;
       lv6=0; lv7=0;
@@ -4645,7 +4654,7 @@ struct NodeStructureMetadata {
         DocStructMarkupHeading.h_text_1;
       p_["obj_cite_number"] = lv4;
       break;
-    case "6":
+    case 6:
       lv = DocStructMarkupHeading.h_text_3;
       lv6 = obj_cite_number;
       lv7=0;
@@ -4653,7 +4662,7 @@ struct NodeStructureMetadata {
         DocStructMarkupHeading.h_text_2;
       p_["obj_cite_number"] = lv5;
       break;
-    case "7":
+    case 7:
       lv = DocStructMarkupHeading.h_text_4;
       lv7 = obj_cite_number;
       p_["lev_markup_number"] =
@@ -4664,15 +4673,16 @@ struct NodeStructureMetadata {
       break;
     }
     _node=("{ " ~
-      "\"is\": \"" ~ is_ ~ "\"" ~
-      ", \"heading_pointer\": " ~ to!string(pointer_) ~
-      ", \"doc_object_pointer\": " ~ to!string(counter_) ~
-      ", \"obj_cite_number\": " ~ to!string(obj_cite_number_) ~
-      ",  \"lev_markup_number\": " ~ to!string(lev_markup_number) ~
-      ",  \"lev_collapsed_number\": " ~ to!string(lev_collapsed_number) ~
-      ", \"segment_anchor_tag\": \"" ~ segment_anchor_tag ~ "\"" ~
-      ", \"parent_obj_cite_number\": " ~ to!string(p_["obj_cite_number"]) ~
-      ", \"parent_lev_markup_number\": " ~ to!string(p_["lev_markup_number"]) ~
+      "\"is\": \""                             ~ is_ ~ "\"" ~
+      ", \"heading_ptr\": "                ~ to!string(ptr_) ~
+      ", \"doc_object_ptr\": "             ~ to!string(cntr_) ~
+      ", \"html_segnames_ptr\": \""        ~ ((lev_markup_number == "4") ? (to!string(html_segnames_ptr)) : "") ~ "\"" ~
+      ", \"obj_cite_number\": "                ~ to!string(obj_cite_number_) ~
+      ", \"lev_markup_number\": "              ~ to!string(lev_markup_number) ~
+      ", \"lev_collapsed_number\": "           ~ to!string(lev_collapsed_number) ~
+      ", \"segment_anchor_tag\": \""           ~ segment_anchor_tag ~ "\"" ~
+      ", \"parent_obj_cite_number\": "         ~ to!string(p_["obj_cite_number"]) ~
+      ", \"parent_lev_markup_number\": "       ~ to!string(p_["lev_markup_number"]) ~
       " }"
     );
     debug(heading) {
@@ -4680,11 +4690,9 @@ struct NodeStructureMetadata {
         writeln("* ", to!string(_node));
       }
     }
-    debug(node) {
+    debug(nodeheading) {
       if (match(lev_markup_number, rgx.levels_numbered_headings)) {
         writeln("* ", to!string(_node));
-      } else {
-        writeln("* ", to!string(_node));
       }
     }
     JSONValue j = parseJSON(_node);
@@ -4948,9 +4956,14 @@ set abstracted objects for downstream processing
 #+name: ao_structs_init
 #+BEGIN_SRC d
 struct HeadingAttrib {
-  string lev                  = "9";
-  int lev_markup_number       = 9;
-  int lev_collapsed_number    = 9;
+  string lev                            = "9";
+  int    lev_int_markup                 = 9;
+  int    lev_int_collapsed              = 9;
+  int[]  closes_lev_collapsed           = []; // TODO track
+  int[]  closes_lev_markup              = []; // TODO track
+  int    array_ptr                  = 0;
+// heading segments, 1~ lev4:
+  int    heading_array_ptr_segments = 0; // TODO
 }
 #+END_SRC
 
@@ -4988,10 +5001,22 @@ struct Comment {
 #+name: ao_structs_init
 #+BEGIN_SRC d
 struct Node {
-  int ocn                     = 0;
-  int parent_lev              = 0;
-  int parent_ocn              = 0;
-  string node                 = "";
+  int ocn                            = 0;
+  string seg_anchor_tag              = "";
+// parent
+  int parent_lev_int_markup          = 0;
+  int parent_ocn                     = 0;
+  int[] ancestors                    = []; // TODO track
+// heading:
+  int heading_lev_int_markup         = 0;
+  int heading_lev_int_collapsed      = 0;
+  int[] heading_closes_lev_collapsed = []; // TODO track
+  int[] heading_closes_lev_markup    = []; // TODO track
+  int heading_array_ptr          = 0;
+// heading segments, 1~ lev4:
+  int heading_array_ptr_segments = 0; // TODO
+// node info json string:
+  string node                        = "";
 }
 #+END_SRC
 
@@ -5047,8 +5072,8 @@ auto contents_heading(
   in int obj_cite_number,
   in string[] tags,
   in string lev,
-  in int lev_markup_number,
-  in int lev_collapsed_number,
+  in int lev_int_markup,
+  in int lev_int_collapsed,
 ) {
   ObjComposite object_set;
   object_set.use                                 = "content";
@@ -5058,9 +5083,8 @@ auto contents_heading(
   object_set.obj_cite_number                     = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
   object_set.anchor_tags                         ~= tags;
   object_set.heading_attrib.lev                  = lev;
-  object_set.heading_attrib.lev_markup_number    = lev_markup_number;
-  object_set.heading_attrib.lev_collapsed_number = lev_collapsed_number;
-  // object_set.node_structure.node               = _node;
+  object_set.heading_attrib.lev_int_markup       = lev_int_markup;
+  object_set.heading_attrib.lev_int_collapsed    = lev_int_collapsed;
   return object_set;
 }
 #+END_SRC
@@ -5075,7 +5099,7 @@ auto contents_para(
   in string attrib,
   in int obj_cite_number,
   in int[string] indent,
-  in bool bullet
+  in bool bullet,
 ) {
   ObjComposite object_set;
   object_set.use                      = "content";
@@ -5101,7 +5125,7 @@ auto contents_toc(
   in string attrib,
   in int obj_cite_number,
   in int[string] indent,
-  in bool bullet
+  in bool bullet,
 ) {
   ObjComposite object_set;
   object_set.use                      = "content";
@@ -5149,7 +5173,7 @@ auto contents_block(
   in string type,
   in string object,
   in string attrib,
-  in int obj_cite_number
+  in int obj_cite_number,
 ) {
   ObjComposite object_set;
   object_set.use                 = "content";
@@ -5170,7 +5194,7 @@ auto contents_block_code(
   in string type,
   in string object,
   in string attrib_language_syntax,
-  in int obj_cite_number
+  in int obj_cite_number,
 ) {
   ObjComposite object_set;
   object_set.use                 = "content";
diff --git a/org/ao_output_debugs.org b/org/ao_output_debugs.org
index 5349200..c576264 100644
--- a/org/ao_output_debugs.org
+++ b/org/ao_output_debugs.org
@@ -24,36 +24,6 @@ auto markup = InlineMarkup();
 string key;
 #+END_SRC
 
-** book index (sort &) report                                        :report:
-
-#+name: book_index_sorted_report
-#+BEGIN_SRC d
-struct BookIndexReport {
-  int mkn, skn;
-  auto bookindex_report_sorted(
-    string[][string][string] bookindex_unordered_hashes
-  ) {
-    auto mainkeys=bookindex_unordered_hashes.byKey.array.
-      sort!("toLower(a) < toLower(b)", SwapStrategy.stable).release;
-    foreach (mainkey; mainkeys) {
-      auto subkeys=bookindex_unordered_hashes[mainkey].byKey.array.
-        sort!("toLower(a) < toLower(b)", SwapStrategy.stable).release;
-      foreach (subkey; subkeys) {
-        debug(bookindex) {
-          writeln(
-            mainkey, ": ",
-            subkey, ": ",
-            to!string(bookindex_unordered_hashes[mainkey][subkey])
-          );
-        }
-        ++skn;
-      }
-      ++mkn;
-    }
-  }
-}
-#+END_SRC
-
 ** (parent)                                                          :parent:
 
 #+name: ao_output_debugs
@@ -72,7 +42,7 @@ debug(parent) {
             "%s node: %s heading: %s %s",
             obj.obj_cite_number,
             obj.node,
-            obj.lev_markup_number,
+            obj.lev_int_markup,
             obj.object,
           );
         }
@@ -395,12 +365,12 @@ debug(headermakejson) {
     "%s\n%s\n%s",
     "document header, metadata & make instructions:",
     dochead_meta,
-    pointer_head_main,
+    ptr_head_main,
   );
-  foreach (main_header; pointer_head_main) {
+  foreach (main_header; ptr_head_main) {
     switch (main_header) {
     case "make":
-      foreach (sub_header; pointer_head_sub_make) {
+      foreach (sub_header; ptr_head_sub_make) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -427,12 +397,12 @@ debug(headermetadatajson) {
     "%s\n%s\n%s",
     "document header, metadata & make instructions:",
     dochead_meta,
-    pointer_head_main,
+    ptr_head_main,
   );
-  foreach (main_header; pointer_head_main) {
+  foreach (main_header; ptr_head_main) {
     switch (main_header) {
     case "creator":
-      foreach (sub_header; pointer_head_sub_creator) {
+      foreach (sub_header; ptr_head_sub_creator) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -444,7 +414,7 @@ debug(headermetadatajson) {
       }
       break;
     case "title":
-      foreach (sub_header; pointer_head_sub_title) {
+      foreach (sub_header; ptr_head_sub_title) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -456,7 +426,7 @@ debug(headermetadatajson) {
       }
       break;
     case "rights":
-      foreach (sub_header; pointer_head_sub_rights) {
+      foreach (sub_header; ptr_head_sub_rights) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -468,7 +438,7 @@ debug(headermetadatajson) {
       }
       break;
     case "date":
-      foreach (sub_header; pointer_head_sub_date) {
+      foreach (sub_header; ptr_head_sub_date) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -480,7 +450,7 @@ debug(headermetadatajson) {
       }
       break;
     case "original":
-      foreach (sub_header; pointer_head_sub_original) {
+      foreach (sub_header; ptr_head_sub_original) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -492,7 +462,7 @@ debug(headermetadatajson) {
       }
       break;
     case "classify":
-      foreach (sub_header; pointer_head_sub_classify) {
+      foreach (sub_header; ptr_head_sub_classify) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -504,7 +474,7 @@ debug(headermetadatajson) {
       }
       break;
     case "identifier":
-      foreach (sub_header; pointer_head_sub_identifier) {
+      foreach (sub_header; ptr_head_sub_identifier) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -516,7 +486,7 @@ debug(headermetadatajson) {
       }
       break;
     case "notes":
-      foreach (sub_header; pointer_head_sub_notes) {
+      foreach (sub_header; ptr_head_sub_notes) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -528,7 +498,7 @@ debug(headermetadatajson) {
       }
       break;
     case "publisher":
-      foreach (sub_header; pointer_head_sub_publisher) {
+      foreach (sub_header; ptr_head_sub_publisher) {
         if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
           writefln(
             "%s:%s: %s",
@@ -546,39 +516,6 @@ debug(headermetadatajson) {
 }
 #+END_SRC
 
-** (bookindex)                                                    :bookindex:
-
-#+name: ao_output_debugs
-#+BEGIN_SRC d
-debug(bookindex) {
-  writefln(
-    "%s\n%s:%s",
-    "-------------------------------",
-    __FILE__,
-    __LINE__,
-  );
-  auto bookindex = BookIndexReport();
-  bookindex.bookindex_report_sorted(bookindex_unordered_hashes);
-}
-#+END_SRC
-
-*** biblio (biblio)
-
-#+name: ao_output_debugs
-#+BEGIN_SRC d
-
-debug(biblio) {
-  foreach (entry; biblio) {
-    writefln(
-      "%s; (%s)",
-      entry["sortby_deemed_author_year_title"],
-      entry["author"],
-    );
-  }
-}
-
-#+END_SRC
-
 ** anchor tags
 
 #+name: ao_output_debugs
@@ -616,7 +553,7 @@ debug(heading) {                         // heading
   foreach (k; document_section_keys_sequenced["seg"]) {
     foreach (o; contents[k]) {
       if (o.is_a == "heading") {
-        switch (o.heading_attrib.lev_markup_number) {
+        switch (o.heading_attrib.lev_int_markup) {
         case 0:
           spc="";
           break;
@@ -652,8 +589,8 @@ debug(heading) {                         // heading
           "%s* %s\n                (markup level: %s; collapsed level: %s)",
           spc,
           strip(o.object),
-          o.heading_attrib.lev_markup_number,
-          o.heading_attrib.lev_collapsed_number
+          o.heading_attrib.lev_int_markup,
+          o.heading_attrib.lev_int_collapsed
         );
       }
     }
@@ -901,8 +838,7 @@ template SiSUoutputDebugs() {
     auto abstract_doc_source_debugs(S)(
       auto ref const S         contents,
       string[][string]         document_section_keys_sequenced,
-      string[][string][string] bookindex_unordered_hashes,      // redundant, consider
-      JSONValue[]              biblio,                          // redundant, consider
+      string[]                 html_segnames,
       string[string][string]   dochead_make,
       string[string][string]   dochead_meta,
       string                   fn_src,
diff --git a/org/output.org b/org/output.org
index b77c2dd..8331a59 100644
--- a/org/output.org
+++ b/org/output.org
@@ -38,12 +38,12 @@ auto html_heading(O)(
   ¶",
   obj.obj_cite_number,
   obj.obj_cite_number,
-  obj.heading_attrib.lev_markup_number,
+  obj.heading_attrib.lev_int_markup,
   obj.is_a,
   obj.obj_cite_number,
   obj.obj_cite_number,
   obj.object,
-  obj.heading_attrib.lev_markup_number
+  obj.heading_attrib.lev_int_markup
   );
   return o;
 }
@@ -1618,6 +1618,7 @@ template SiSUoutputHub() {
     void hub(S)(
       auto ref const S         contents,
       string[][string]         document_section_keys_sequenced,
+      string[]                 html_segnames,
       string[string][string]   dochead_make,
       string[string][string]   dochead_meta,
       string                   fn_src,
diff --git a/org/sdp.org b/org/sdp.org
index a016400..a8e8724 100644
--- a/org/sdp.org
+++ b/org/sdp.org
@@ -24,7 +24,7 @@ struct Version {
   int minor;
   int patch;
 }
-enum ver = Version(0, 9, 2);
+enum ver = Version(0, 9, 3);
 #+END_SRC
 
 * sdp.d   sisu document parser                                       :sdp.d:
@@ -377,8 +377,7 @@ string[string][string] dochead_meta = header_make_and_meta_tuple[1];
 auto t = abs.abstract_doc_source(content_body, dochead_make, dochead_meta, opt_action_bool);
 static assert(!isTypeTuple!(t));
 auto doc_ao_contents = t[0]; // head ~ toc ~ contents ~ endnotes_seg ~ glossary ~ bibliography ~ bookindex ~blurb;
-auto doc_ao_bookindex_unordered_hashes = t[1]; // redundant?
-auto doc_ao_biblio = t[2];                     // redundant?
+auto doc_html_segnames = t[1];
 #+END_SRC
 
 **** document section keys view
@@ -442,8 +441,7 @@ debug(checkdoc) {
   dbg.abstract_doc_source_debugs(
     doc_ao_contents,
     document_section_keys_sequenced,
-    doc_ao_bookindex_unordered_hashes, // redundant?
-    doc_ao_biblio,                     // redundant?
+    doc_html_segnames,
     dochead_make,
     dochead_meta,
     fn_src,
@@ -460,6 +458,7 @@ debug(checkdoc) {
 output.hub(
   doc_ao_contents,
   document_section_keys_sequenced,
+  doc_html_segnames,
   dochead_make,
   dochead_meta,
   fn_src,
@@ -481,7 +480,7 @@ scope(exit) {
   destroy(content_body);
   destroy(t);
   destroy(doc_ao_contents);
-  destroy(doc_ao_biblio);
+  destroy(doc_html_segnames);
   destroy(fn_src);
 }
 #+END_SRC
diff --git a/src/sdp.d b/src/sdp.d
index 9f98716..8b376e6 100755
--- a/src/sdp.d
+++ b/src/sdp.d
@@ -213,8 +213,7 @@ void main(string[] args) {
       auto t = abs.abstract_doc_source(content_body, dochead_make, dochead_meta, opt_action_bool);
       static assert(!isTypeTuple!(t));
       auto doc_ao_contents = t[0]; // head ~ toc ~ contents ~ endnotes_seg ~ glossary ~ bibliography ~ bookindex ~blurb;
-      auto doc_ao_bookindex_unordered_hashes = t[1]; // redundant?
-      auto doc_ao_biblio = t[2];                     // redundant?
+      auto doc_html_segnames = t[1];
       string[][string] document_section_keys_sequenced = [
         "seg": [
            "head",
@@ -266,8 +265,7 @@ void main(string[] args) {
         dbg.abstract_doc_source_debugs(
           doc_ao_contents,
           document_section_keys_sequenced,
-          doc_ao_bookindex_unordered_hashes, // redundant?
-          doc_ao_biblio,                     // redundant?
+          doc_html_segnames,
           dochead_make,
           dochead_meta,
           fn_src,
@@ -278,6 +276,7 @@ void main(string[] args) {
       output.hub(
         doc_ao_contents,
         document_section_keys_sequenced,
+        doc_html_segnames,
         dochead_make,
         dochead_meta,
         fn_src,
@@ -293,7 +292,7 @@ void main(string[] args) {
         destroy(content_body);
         destroy(t);
         destroy(doc_ao_contents);
-        destroy(doc_ao_biblio);
+        destroy(doc_html_segnames);
         destroy(fn_src);
       }
     } else {
diff --git a/src/sdp/ao_abstract_doc_source.d b/src/sdp/ao_abstract_doc_source.d
index cc39ea1..7dbc573 100644
--- a/src/sdp/ao_abstract_doc_source.d
+++ b/src/sdp/ao_abstract_doc_source.d
@@ -22,7 +22,7 @@ template SiSUdocAbstraction() {
     string[string] an_object, processing;
     string an_object_key;
     string[] anchor_tags;
-    string segment_object_belongs_to;
+    string segment_anchor_tag_that_object_belongs_to;
     auto set_abstract_object = ObjectAbstractSet();
     auto note_section = NotesSection();
     /+ enum +/
@@ -48,9 +48,12 @@ template SiSUdocAbstraction() {
     JSONValue[] bib_arr_json;
     int bib_entry;
     /+ counters +/
-    long counter, previous_count, previous_length;
+    long cntr, previous_count, previous_length;
     int[string] line_occur;
-    int verse_line, heading_pointer;
+    int verse_line, heading_ptr;
+    string[] html_segnames=[];
+    uint html_segnames_ptr=0;
+    uint html_segnames_ptr_cntr=0;
     /+ paragraph attributes +/
     int[string] indent;
     bool bullet = true;
@@ -122,7 +125,7 @@ template SiSUdocAbstraction() {
         "h5" : State.off,
         "h6" : State.off,
         "h7" : State.off,
-        "lev_collapsed_number" : 0,
+        "lev_int_collapsed" : 0,
       ];
       int[string] collapsed_lev = [
         "h0" : State.off,
@@ -165,8 +168,8 @@ template SiSUdocAbstraction() {
           0,                   // obj_cite_number
           ["toc"],             // anchor tag
           "1",                 // lev
-          4,                   // lev_markup_number
-          2,                   // lev_collapsed_number
+          4,                   // lev_int_markup
+          2,                   // lev_int_collapsed
         );
       the_table_of_contents_section = [
         "seg": [toc_head],
@@ -262,8 +265,8 @@ template SiSUdocAbstraction() {
                     0,                // obj_cite_number
                     [""],             // anchor tag
                     "B",              // lev
-                    1,                // lev_markup_number
-                    1,                // lev_collapsed_number
+                    1,                // lev_int_markup
+                    1,                // lev_int_collapsed
                   );
                 the_glossary_section ~=
                   set_abstract_object.contents_heading(
@@ -272,8 +275,8 @@ template SiSUdocAbstraction() {
                     0,                // obj_cite_number
                     ["glossary"],     // anchor tag
                     "1",              // lev
-                    4,                // lev_markup_number
-                    2,                // lev_collapsed_number
+                    4,                // lev_int_markup
+                    2,                // lev_int_collapsed
                   );
               // } else if (matchFirst(line, rgx.heading)) {
               //   _heading_matched_(line, line_occur, an_object, an_object_key, lv, collapsed_lev, type, dochead_meta_aa); // levels?
@@ -323,8 +326,8 @@ template SiSUdocAbstraction() {
                     0,                // obj_cite_number
                     [""],             // anchor tag
                     "B",              // lev
-                    1,                // lev_markup_number
-                    1,                // lev_collapsed_number
+                    1,                // lev_int_markup
+                    1,                // lev_int_collapsed
                   );
                 the_blurb_section ~=
                   set_abstract_object.contents_heading(
@@ -333,8 +336,8 @@ template SiSUdocAbstraction() {
                     0,                // obj_cite_number
                     ["blurb"],        // anchor tag
                     "1",              // lev
-                    4,                // lev_markup_number
-                    2,                // lev_collapsed_number
+                    4,                // lev_int_markup
+                    2,                // lev_int_collapsed
                   );
               } else if ((matchFirst(line, rgx.heading))
                 && (opt_action_bool["backmatter"] && opt_action_bool["section_blurb"])) {
@@ -366,7 +369,7 @@ template SiSUdocAbstraction() {
             continue;
           } else if (type["poem"] == TriState.on) {
             /+ within block object: poem +/
-            _poem_block_(line, an_object, type, counter, obj_cite_number_poem, dochead_make_aa);
+            _poem_block_(line, an_object, type, cntr, obj_cite_number_poem, dochead_make_aa);
             continue;
           /+ within block object: group +/
           } else if (type["group"] == TriState.on) {
@@ -444,7 +447,7 @@ template SiSUdocAbstraction() {
                     set_abstract_object.contents_comment(strip(an_object[an_object_key]));
                   _common_reset_(line_occur, an_object, type);
                   processing.remove("verse");
-                  ++counter;
+                  ++cntr;
                 } else if (((line_occur["para"] == State.off)
                 && (line_occur["heading"] == State.off))
                 && ((type["para"] == State.off)
@@ -503,7 +506,7 @@ template SiSUdocAbstraction() {
                 bookindex_unordered_hashes,
                 obj_cite_number,
                 _node,
-                counter,
+                cntr,
                 type,
                 obj_cite_number_poem,
                 dochead_make_aa
@@ -534,34 +537,40 @@ template SiSUdocAbstraction() {
                 an_object["substantive"] = substantive_object_and_anchor_tags_tuple[0];
                 anchor_tags = substantive_object_and_anchor_tags_tuple[1];
                 if (to!int(an_object["lev_markup_number"]) == 4) {
-                  segment_object_belongs_to = anchor_tags[0];
+                  segment_anchor_tag_that_object_belongs_to = anchor_tags[0];
                 } else if (to!int(an_object["lev_markup_number"]) < 4) {
-                  segment_object_belongs_to = "";
+                  segment_anchor_tag_that_object_belongs_to = "";
                 }
                 _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_object_belongs_to,
+                  segment_anchor_tag_that_object_belongs_to,
                   _anchor_tag,
                   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++;
+                }
                 _node =
                   node_construct.node_emitter_heading(
                     an_object["lev_markup_number"],
                     an_object["lev_collapsed_number"],
-                    segment_object_belongs_to,
+                    segment_anchor_tag_that_object_belongs_to,
                     obj_cite_number,
-                    counter,
-                    heading_pointer,
-                    an_object["is"]
+                    cntr,
+                    heading_ptr,
+                    an_object["is"],
+                    html_segnames_ptr,
                   ); // heading
                 an_object["attrib"] =
                   obj_att.obj_attributes(an_object["is"], an_object[an_object_key], _node);
-                ++heading_pointer;
+                ++heading_ptr;
                 debug(segments) {
                   writeln(an_object["lev_markup_number"]);
-                  writeln(segment_object_belongs_to);
+                  writeln(segment_anchor_tag_that_object_belongs_to);
                 }
                 the_document_body_section ~=
                   set_abstract_object.contents_heading(
@@ -581,7 +590,7 @@ template SiSUdocAbstraction() {
                 an_object.remove("lev");
                 an_object.remove("lev_markup_number");
                 processing.remove("verse");
-                ++counter;
+                ++cntr;
               } else if ((type["para"] == State.on) && (line_occur["para"] > State.off)) {
                 /+ paragraph object (current line empty) +/
                 obj_cite_number = obj_cite_number_emit(type["obj_cite_number_status"]);
@@ -593,11 +602,11 @@ template SiSUdocAbstraction() {
                 _node =
                   node_construct.node_emitter(
                     content_non_header,
-                    segment_object_belongs_to,
+                    segment_anchor_tag_that_object_belongs_to,
                     obj_cite_number,
-                    counter,
-                    heading_pointer-1,
-                    an_object["is"]
+                    cntr,
+                    heading_ptr-1,
+                    an_object["is"],
                   );
                 auto substantive_object_and_anchor_tags_tuple =
                   obj_im.obj_inline_markup_and_anchor_tags(an_object, an_object_key, dochead_make_aa); // ...
@@ -621,7 +630,7 @@ template SiSUdocAbstraction() {
                 ];
                 bullet = false;
                 processing.remove("verse");
-                ++counter;
+                ++cntr;
               } else {
                 assert(
                   line == null,
@@ -640,7 +649,7 @@ template SiSUdocAbstraction() {
           && (the_document_body_section.length > previous_length)
         ) {
             if ((the_document_body_section[$-1].is_a == "heading")
-            && (the_document_body_section[$-1].heading_attrib.lev_markup_number < 5)) {
+            && (the_document_body_section[$-1].heading_attrib.lev_int_markup < 5)) {
               type["biblio_section"] = State.off;
               type["glossary_section"] = State.off;
               type["blurb_section"] = State.off;
@@ -653,8 +662,8 @@ template SiSUdocAbstraction() {
               previous_count=the_document_body_section.length -1;
               note_section.gather_notes_for_endnote_section(
                 the_document_body_section,
-                segment_object_belongs_to,
-                the_document_body_section.length-1
+                segment_anchor_tag_that_object_belongs_to,
+                the_document_body_section.length-1,
               );
             }
           }
@@ -698,8 +707,8 @@ template SiSUdocAbstraction() {
             0,                // obj_cite_number
             [""],             // anchor tag
             "B",              // lev
-            1,                // lev_markup_number
-            1,                // lev_collapsed_number
+            1,                // lev_int_markup
+            1,                // lev_int_collapsed
           );
       } else {
         writeln("gloss");
@@ -722,8 +731,8 @@ template SiSUdocAbstraction() {
             0,                // obj_cite_number
             [""],             // anchor tag
             "B",              // lev
-            1,                // lev_markup_number
-            1,                // lev_collapsed_number
+            1,                // lev_int_markup
+            1,                // lev_int_collapsed
           );
         the_bibliography_section ~=
           set_abstract_object.contents_heading(
@@ -732,8 +741,8 @@ template SiSUdocAbstraction() {
             0,                // obj_cite_number
             ["bibliography"], // anchor tag
             "1",              // lev
-            4,                // lev_markup_number
-            2,                // lev_collapsed_number
+            4,                // lev_int_markup
+            2,                // lev_int_collapsed
           );
       } else {
         the_bibliography_section ~=
@@ -743,8 +752,8 @@ template SiSUdocAbstraction() {
             0,                // obj_cite_number
             [""],             // anchor tag
             "B",              // lev
-            1,                // lev_markup_number
-            1,                // lev_collapsed_number
+            1,                // lev_int_markup
+            1,                // lev_int_collapsed
           );
       }
       string out_;
@@ -783,7 +792,7 @@ template SiSUdocAbstraction() {
         bi.bookindex_build_section(
           bookindex_unordered_hashes,
           obj_cite_number,
-          segment_object_belongs_to,
+          segment_anchor_tag_that_object_belongs_to,
           opt_action_bool,
         );
       static assert(!isTypeTuple!(bi_tuple));
@@ -803,8 +812,8 @@ template SiSUdocAbstraction() {
             0,                // obj_cite_number
             [""],             // anchor tag
             "B",              // lev
-            1,                // lev_markup_number
-            1,                // lev_collapsed_number
+            1,                // lev_int_markup
+            1,                // lev_int_collapsed
           );
       } else {
         writeln("blurb");
@@ -823,7 +832,7 @@ template SiSUdocAbstraction() {
         toc_txt_ = format(
           "{ %s }../%s.fn_suffix",
           "Endnotes",
-          "endnotes",            // segment_object_belongs_to
+          "endnotes",            // segment_anchor_tag_that_object_belongs_to
         );
         toc_txt_= munge.url_links(toc_txt_);
         the_table_of_contents_section["seg"] ~=
@@ -857,7 +866,7 @@ template SiSUdocAbstraction() {
         toc_txt_ = format(
           "{ %s }../%s.fn_suffixs",
           "Glossary",
-          "glossary",  // segment_object_belongs_to
+          "glossary",  // segment_anchor_tag_that_object_belongs_to
         );
         toc_txt_= munge.url_links(toc_txt_);
         the_table_of_contents_section["seg"] ~=
@@ -889,7 +898,7 @@ template SiSUdocAbstraction() {
         toc_txt_ = format(
           "{ %s }../%s.fn_suffix",
           "Bibliography",
-          "bibliography",        // segment_object_belongs_to
+          "bibliography",        // segment_anchor_tag_that_object_belongs_to
         );
         toc_txt_= munge.url_links(toc_txt_);
         the_table_of_contents_section["seg"] ~=
@@ -921,7 +930,7 @@ template SiSUdocAbstraction() {
         toc_txt_ = format(
           "{ %s }../%s.fn_suffix",
           "Book Index",
-          "bookindex",          // segment_object_belongs_to
+          "bookindex",          // segment_anchor_tag_that_object_belongs_to
         );
         toc_txt_= munge.url_links(toc_txt_);
         the_table_of_contents_section["seg"] ~=
@@ -955,7 +964,7 @@ template SiSUdocAbstraction() {
         toc_txt_ = format(
           "{ %s }../%s.fn_suffix",
           "Blurb",
-          "blurb",                // segment_object_belongs_to
+          "blurb",                // segment_anchor_tag_that_object_belongs_to
         );
         toc_txt_= munge.url_links(toc_txt_);
         the_table_of_contents_section["seg"] ~=
@@ -1010,8 +1019,7 @@ template SiSUdocAbstraction() {
       ];
       auto t = tuple(
         document_the,
-        bookindex_unordered_hashes,
-        biblio_ordered
+        html_segnames,
       );
       return t;
       /+ post loop markup document/text ↑ +/
@@ -1400,7 +1408,7 @@ template SiSUdocAbstraction() {
       char[] line,
       ref string[string] an_object,
       ref int[string] type,
-      ref long counter,
+      ref long cntr,
       string[string] obj_cite_number_poem,
       string[string][string] dochead_make_aa,
     ) {
@@ -1447,7 +1455,7 @@ template SiSUdocAbstraction() {
               );
             object_reset(an_object);
             processing.remove("verse");
-            ++counter;
+            ++cntr;
           }
           obj_cite_number_poem["end"] =
             to!string(obj_cite_number);
@@ -1478,10 +1486,10 @@ template SiSUdocAbstraction() {
             an_object["is"] = "verse";
             _node = node_construct.node_emitter(
               content_non_header,
-              segment_object_belongs_to,
+              segment_anchor_tag_that_object_belongs_to,
               obj_cite_number,
-              counter,
-              heading_pointer-1,
+              cntr,
+              heading_ptr-1,
               an_object["is"]
             );
             auto substantive_object_and_anchor_tags_tuple =
@@ -1499,7 +1507,7 @@ template SiSUdocAbstraction() {
               );
             object_reset(an_object);
             processing.remove("verse");
-            ++counter;
+            ++cntr;
           }
         }
       } else if (type["tic_poem"] == TriState.on) {
@@ -1537,7 +1545,7 @@ template SiSUdocAbstraction() {
             obj_cite_number_poem["end"] = to!string(obj_cite_number);
             object_reset(an_object);
             processing.remove("verse");
-            ++counter;
+            ++cntr;
           }
           type["blocks"] = TriState.closing;
           type["poem"] = TriState.closing;
@@ -1567,10 +1575,10 @@ template SiSUdocAbstraction() {
             _node =
               node_construct.node_emitter(
                 content_non_header,
-                segment_object_belongs_to,
+                segment_anchor_tag_that_object_belongs_to,
                 obj_cite_number,
-                counter,
-                heading_pointer-1,
+                cntr,
+                heading_ptr-1,
                 an_object["is"]
               );
             auto substantive_object_and_anchor_tags_tuple =
@@ -1588,7 +1596,7 @@ template SiSUdocAbstraction() {
               );
             object_reset(an_object);
             processing.remove("verse");
-            ++counter;
+            ++cntr;
           }
         }
       }
@@ -1740,7 +1748,7 @@ template SiSUdocAbstraction() {
       ref string[][string][string] bookindex_unordered_hashes,
       ref int obj_cite_number,
       ref string _node,
-      ref long counter,
+      ref long cntr,
       ref int[string] type,
       string[string] obj_cite_number_poem,
       string[string][string] dochead_make_aa,
@@ -1766,10 +1774,10 @@ template SiSUdocAbstraction() {
         _node =
           node_construct.node_emitter(
             content_non_header,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             obj_cite_number,
-            counter,
-            heading_pointer-1,
+            cntr,
+            heading_ptr-1,
             an_object["is"]
           );
         auto substantive_object_and_anchor_tags_tuple =
@@ -1787,7 +1795,7 @@ template SiSUdocAbstraction() {
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
         type["blocks"] = TriState.off;
         type["code"] = TriState.off;
       } else if (type["poem"] == TriState.closing) {
@@ -1799,10 +1807,10 @@ template SiSUdocAbstraction() {
         _node =
           node_construct.node_emitter(
             content_non_header,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             obj_cite_number,
-            counter,
-            heading_pointer-1,
+            cntr,
+            heading_ptr-1,
             an_object["is"]
           );
         the_document_body_section ~=
@@ -1827,10 +1835,10 @@ template SiSUdocAbstraction() {
         _node =
           node_construct.node_emitter(
             content_non_header,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             obj_cite_number,
-            counter,
-            heading_pointer-1,
+            cntr,
+            heading_ptr-1,
             an_object["is"]
           );
         auto substantive_object_and_anchor_tags_tuple =
@@ -1848,7 +1856,7 @@ template SiSUdocAbstraction() {
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
         type["blocks"] = TriState.off;
         type["table"] = TriState.off;
       } else if (type["group"] == TriState.closing) {
@@ -1862,10 +1870,10 @@ template SiSUdocAbstraction() {
         _node =
           node_construct.node_emitter(
             content_non_header,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             obj_cite_number,
-            counter,
-            heading_pointer-1,
+            cntr,
+            heading_ptr-1,
             an_object["is"]
           );
         auto substantive_object_and_anchor_tags_tuple =
@@ -1883,7 +1891,7 @@ template SiSUdocAbstraction() {
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
         type["blocks"] = TriState.off;
         type["group"] = TriState.off;
       } else if (type["block"] == TriState.closing) {
@@ -1896,10 +1904,10 @@ template SiSUdocAbstraction() {
         _node =
           node_construct.node_emitter(
             content_non_header,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             obj_cite_number,
-            counter,
-            heading_pointer-1,
+            cntr,
+            heading_ptr-1,
             an_object["is"]
            );
         auto substantive_object_and_anchor_tags_tuple =
@@ -1917,7 +1925,7 @@ template SiSUdocAbstraction() {
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
         type["blocks"] = TriState.off;
         type["block"] = TriState.off;
       } else if (type["quote"] == TriState.closing) {
@@ -1931,10 +1939,10 @@ template SiSUdocAbstraction() {
         _node =
           node_construct.node_emitter(
             content_non_header,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             obj_cite_number,
-            counter,
-            heading_pointer-1,
+            cntr,
+            heading_ptr-1,
             an_object["is"]
           );
         auto substantive_object_and_anchor_tags_tuple =
@@ -1952,7 +1960,7 @@ template SiSUdocAbstraction() {
           );
         object_reset(an_object);
         processing.remove("verse");
-        ++counter;
+        ++cntr;
         type["blocks"] = TriState.off;
         type["quote"] = TriState.off;
       }
@@ -2667,7 +2675,7 @@ template SiSUdocAbstraction() {
       auto table_of_contents_gather_headings(
         string[string] obj_,
         string[string][string] dochead_make_aa,
-        string segment_object_belongs_to,
+        string segment_anchor_tag_that_object_belongs_to,
         string _anchor_tag,
         ObjComposite[][string] the_table_of_contents_section,
       )
@@ -2762,7 +2770,7 @@ template SiSUdocAbstraction() {
           toc_txt_ = format(
             "{ %s }../%s.fn_suffix",
             heading_toc_,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
           );
           toc_txt_= munge.url_links(toc_txt_);
           indent=[
@@ -2783,7 +2791,7 @@ template SiSUdocAbstraction() {
           toc_txt_ = format(
             "{ %s }../%s.fn_suffix#%s",
             heading_toc_,
-            segment_object_belongs_to,
+            segment_anchor_tag_that_object_belongs_to,
             _anchor_tag,
           );
           toc_txt_= munge.url_links(toc_txt_);
@@ -3178,10 +3186,10 @@ template SiSUdocAbstraction() {
           oa_j.object["obj_cite_number"] = node_j["obj_cite_number"];
           oa_j.object["lev_markup_number"] = node_j["lev_markup_number"];
           oa_j.object["lev_collapsed_number"] = node_j["lev_collapsed_number"];
-          oa_j.object["heading_pointer"] =
-            node_j["heading_pointer"]; // check
-          oa_j.object["doc_object_pointer"] =
-            node_j["doc_object_pointer"]; // check
+          oa_j.object["heading_ptr"] =
+            node_j["heading_ptr"]; // check
+          oa_j.object["doc_object_ptr"] =
+            node_j["doc_object_ptr"]; // check
         }
         oa_j.object["parent_obj_cite_number"] = node_j["parent_obj_cite_number"];
         oa_j.object["parent_lev_markup_number"] = node_j["parent_lev_markup_number"];
@@ -3318,12 +3326,12 @@ template SiSUdocAbstraction() {
       auto bookindex_build_section(
         string[][string][string] bookindex_unordered_hashes,
         int                      obj_cite_number,
-        string                   segment_object_belongs_to,
+        string                   segment_anchor_tag_that_object_belongs_to,
         bool[string]             opt_action_bool,
       ) {
         string type;
         string lev;
-        int lev_markup_number, lev_collapsed_number;
+        int lev_int_markup, lev_int_collapsed;
         string attrib;
         int[string] indent;
         auto set_abstract_object = ObjectAbstractSet();
@@ -3335,8 +3343,8 @@ template SiSUdocAbstraction() {
           string bi_tmp_seg, bi_tmp_scroll;
           attrib="";
           lev="B";
-          lev_markup_number=1;
-          lev_collapsed_number=1;
+          lev_int_markup=1;
+          lev_int_collapsed=1;
           bookindex_section["scroll"] ~=
             set_abstract_object.contents_heading(
               "Book Index",
@@ -3344,8 +3352,8 @@ template SiSUdocAbstraction() {
               obj_cite_number,
               [],
               to!string(lev),
-              lev_markup_number,
-              lev_collapsed_number
+              lev_int_markup,
+              lev_int_collapsed
             );
           bookindex_section["seg"] ~=
             set_abstract_object.contents_heading(
@@ -3354,16 +3362,16 @@ template SiSUdocAbstraction() {
               obj_cite_number,
               [],
               to!string(lev),
-              lev_markup_number,
-              lev_collapsed_number
+              lev_int_markup,
+              lev_int_collapsed
             );
           ++obj_cite_number;
           ++mkn;
           // 1~ Index
           attrib="";
           lev="1";
-          lev_markup_number=4;
-          lev_collapsed_number=2;
+          lev_int_markup=4;
+          lev_int_collapsed=2;
           bookindex_section["scroll"] ~=
             set_abstract_object.contents_heading(
               "Index",
@@ -3371,8 +3379,8 @@ template SiSUdocAbstraction() {
               obj_cite_number,
               ["book_index"],
               to!string(lev),
-              lev_markup_number,
-              lev_collapsed_number
+              lev_int_markup,
+              lev_int_collapsed
             );
           bookindex_section["seg"] ~=
             set_abstract_object.contents_heading(
@@ -3381,8 +3389,8 @@ template SiSUdocAbstraction() {
               obj_cite_number,
               ["book_index"],
               to!string(lev),
-              lev_markup_number,
-              lev_collapsed_number
+              lev_int_markup,
+              lev_int_collapsed
             );
           ++obj_cite_number;
           ++mkn;
@@ -3392,9 +3400,9 @@ template SiSUdocAbstraction() {
             foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
               auto go = replaceAll(ref_, rgx.book_index_go, "$1");
               bi_tmp_scroll ~= munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ");
-              bi_tmp_seg ~= (segment_object_belongs_to.empty)
+              bi_tmp_seg ~= (segment_anchor_tag_that_object_belongs_to.empty)
               ? munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ")
-              : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
+              : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_anchor_tag_that_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
             }
             bi_tmp_scroll ~= " \\\\\n    ";
             bi_tmp_seg ~= " \\\\\n    ";
@@ -3407,9 +3415,9 @@ template SiSUdocAbstraction() {
               foreach (ref_; bookindex_unordered_hashes[mainkey][subkey]) {
                 auto go = replaceAll(ref_, rgx.book_index_go, "$1");
                 bi_tmp_scroll ~= munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ");
-                bi_tmp_seg ~= (segment_object_belongs_to.empty)
+                bi_tmp_seg ~= (segment_anchor_tag_that_object_belongs_to.empty)
                 ? munge.url_links(" {" ~ ref_ ~ "}#" ~ go ~ ", ")
-                : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
+                : munge.url_links(" {" ~ ref_ ~ "}../" ~ segment_anchor_tag_that_object_belongs_to ~ ".fn_suffix#" ~ go ~ ", ");
               }
               bi_tmp_scroll ~= " \\\\\n    ";
               bi_tmp_seg ~= " \\\\\n    ";
@@ -3477,20 +3485,20 @@ template SiSUdocAbstraction() {
       auto rgx = Rgx();
       private auto gather_notes_for_endnote_section(
         ObjComposite[] contents_am,
-        string         segment_object_belongs_to,
-        ulong          counter,
+        string         segment_anchor_tag_that_object_belongs_to,
+        ulong          cntr,
       )
       in {
         // endnotes/ footnotes for
         // doc objects other than paragraphs & headings
         // various forms of grouped text
-        assert((contents_am[counter].is_a == "para")
-        || (contents_am[counter].is_a == "heading")
-        || (contents_am[counter].is_a == "group"));
-        assert(counter >= previous_count);
-        previous_count=counter;
+        assert((contents_am[cntr].is_a == "para")
+        || (contents_am[cntr].is_a == "heading")
+        || (contents_am[cntr].is_a == "group"));
+        assert(cntr >= previous_count);
+        previous_count=cntr;
         assert(
-          match(contents_am[counter].object,
+          match(contents_am[cntr].object,
           rgx.inline_notes_delimiter_al_regular_number_note)
         );
       }
@@ -3499,24 +3507,24 @@ template SiSUdocAbstraction() {
         foreach(
           m;
           matchAll(
-            contents_am[counter].object,
+            contents_am[cntr].object,
             rgx.inline_notes_delimiter_al_regular_number_note
           )
         ) {
           debug(endnotes_build) {
             writeln(
-              "{^{", m.captures[1], ".}^}../", segment_object_belongs_to, ".fn_suffix#noteref_\n  ", m.captures[1], " ",
+              "{^{", m.captures[1], ".}^}../", segment_anchor_tag_that_object_belongs_to, ".fn_suffix#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["seg"] ~= (segment_object_belongs_to.empty)
+          object_notes["seg"] ~= (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] ~ ".}^}../" ~ segment_object_belongs_to ~ ".fn_suffix#noteref_" ~
+              "{^{" ~ m.captures[1] ~ ".}^}../" ~ segment_anchor_tag_that_object_belongs_to ~ ".fn_suffix#noteref_" ~
               m.captures[1]) ~ " " ~ m.captures[2] ~ "』"
             );
           object_notes["scroll"] ~=
@@ -3666,11 +3674,11 @@ template SiSUdocAbstraction() {
           writeln("json:                ", bib_arr_json.length);
           writeln("unsorted:            ", biblio_unsorted.length);
           writeln("sorted:              ", biblio_sorted__.length);
-          int counter;
+          int cntr;
           int[7] x;
-          while (counter < x.length) {
-            writeln(counter, ": ", biblio_sorted__[counter]["fulltitle"]);
-            counter++;
+          while (cntr < x.length) {
+            writeln(cntr, ": ", biblio_sorted__[cntr]["fulltitle"]);
+            cntr++;
           }
         }
         return biblio_sorted__;
@@ -3737,9 +3745,9 @@ template SiSUdocAbstraction() {
       string node_emitter(
         string lev_markup_number,
         string segment_anchor_tag,
-        int obj_cite_number_,
-        long counter_,
-        int pointer_,
+        int    obj_cite_number_,
+        long   cntr_,
+        int    ptr_,
         string is_
       )
       in {
@@ -3765,20 +3773,20 @@ template SiSUdocAbstraction() {
           p_["obj_cite_number"] = lv4;
         }
         _node=("{ " ~
-          "\"is\": \"" ~ is_ ~ "\"" ~
-          ", \"heading_pointer\": " ~ to!string(pointer_) ~
-          ", \"doc_object_pointer\": " ~ to!string(counter_) ~
-          ", \"obj_cite_number\": " ~ to!string(obj_cite_number_) ~
-          ", \"segment_anchor_tag\": \"" ~ segment_anchor_tag ~ "\"" ~
-          ", \"parent_obj_cite_number\": " ~ to!string(p_["obj_cite_number"]) ~
+          "\"is\": \""                       ~ is_ ~ "\"" ~
+          ", \"heading_ptr\": "          ~ to!string(ptr_) ~
+          ", \"doc_object_ptr\": "       ~ to!string(cntr_) ~
+          ", \"obj_cite_number\": "          ~ to!string(obj_cite_number_) ~
+          ", \"segment_anchor_tag\": \""     ~ segment_anchor_tag ~ "\"" ~
+          ", \"parent_obj_cite_number\": "   ~ to!string(p_["obj_cite_number"]) ~
           ", \"parent_lev_markup_number\": " ~ to!string(p_["lev_markup_number"]) ~
           " }"
         );
         debug(node) {
           if (match(lev_markup_number, rgx.levels_numbered_headings)) {
-            writeln("* ", to!string(_node));
+            writeln("x ", to!string(_node));
           } else {
-            writeln("* ", to!string(_node));
+            writeln("- ", to!string(_node));
           }
         }
         JSONValue j = parseJSON(_node);
@@ -3793,10 +3801,11 @@ template SiSUdocAbstraction() {
         string lev_markup_number,
         string lev_collapsed_number,
         string segment_anchor_tag,
-        int obj_cite_number_,
-        long counter_,
-        int pointer_,
-        string is_
+        int    obj_cite_number_,
+        long   cntr_,
+        int    ptr_,
+        string is_,
+        uint html_segnames_ptr,
       )
       in {
         auto rgx = Rgx();
@@ -3815,15 +3824,15 @@ template SiSUdocAbstraction() {
       body {
         auto rgx = Rgx();
         int obj_cite_number = to!int(obj_cite_number_);
-        switch (lev_markup_number) { // switch (to!string(lv)) {
-        case "0":
+        switch (to!int(lev_markup_number)) { // switch (to!string(lv)) {
+        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":
+        case 1:
           lv = DocStructMarkupHeading.h_sect_B;
           lv1 = obj_cite_number;
           lv2=0; lv3=0; lv4=0; lv5=0; lv6=0; lv7=0;
@@ -3831,7 +3840,7 @@ template SiSUdocAbstraction() {
             DocStructMarkupHeading.h_sect_A;
           p_["obj_cite_number"] = lv0;
           break;
-        case "2":
+        case 2:
           lv = DocStructMarkupHeading.h_sect_C;
           lv2 = obj_cite_number;
           lv3=0; lv4=0; lv5=0; lv6=0; lv7=0;
@@ -3839,7 +3848,7 @@ template SiSUdocAbstraction() {
             DocStructMarkupHeading.h_sect_B;
           p_["obj_cite_number"] = lv1;
           break;
-        case "3":
+        case 3:
           lv = DocStructMarkupHeading.h_sect_D;
           lv3=obj_cite_number;
           lv4=0; lv5=0; lv6=0; lv7=0;
@@ -3847,7 +3856,7 @@ template SiSUdocAbstraction() {
             DocStructMarkupHeading.h_sect_C;
           p_["obj_cite_number"] = lv2;
           break;
-        case "4":
+        case 4:
           lv = DocStructMarkupHeading.h_text_1;
           lv4 = obj_cite_number;
           lv5=0; lv6=0; lv7=0;
@@ -3869,7 +3878,7 @@ template SiSUdocAbstraction() {
             p_["obj_cite_number"] = lv0;
           }
           break;
-        case "5":
+        case 5:
           lv = DocStructMarkupHeading.h_text_2;
           lv5 = obj_cite_number;
           lv6=0; lv7=0;
@@ -3877,7 +3886,7 @@ template SiSUdocAbstraction() {
             DocStructMarkupHeading.h_text_1;
           p_["obj_cite_number"] = lv4;
           break;
-        case "6":
+        case 6:
           lv = DocStructMarkupHeading.h_text_3;
           lv6 = obj_cite_number;
           lv7=0;
@@ -3885,7 +3894,7 @@ template SiSUdocAbstraction() {
             DocStructMarkupHeading.h_text_2;
           p_["obj_cite_number"] = lv5;
           break;
-        case "7":
+        case 7:
           lv = DocStructMarkupHeading.h_text_4;
           lv7 = obj_cite_number;
           p_["lev_markup_number"] =
@@ -3896,15 +3905,16 @@ template SiSUdocAbstraction() {
           break;
         }
         _node=("{ " ~
-          "\"is\": \"" ~ is_ ~ "\"" ~
-          ", \"heading_pointer\": " ~ to!string(pointer_) ~
-          ", \"doc_object_pointer\": " ~ to!string(counter_) ~
-          ", \"obj_cite_number\": " ~ to!string(obj_cite_number_) ~
-          ",  \"lev_markup_number\": " ~ to!string(lev_markup_number) ~
-          ",  \"lev_collapsed_number\": " ~ to!string(lev_collapsed_number) ~
-          ", \"segment_anchor_tag\": \"" ~ segment_anchor_tag ~ "\"" ~
-          ", \"parent_obj_cite_number\": " ~ to!string(p_["obj_cite_number"]) ~
-          ", \"parent_lev_markup_number\": " ~ to!string(p_["lev_markup_number"]) ~
+          "\"is\": \""                             ~ is_ ~ "\"" ~
+          ", \"heading_ptr\": "                ~ to!string(ptr_) ~
+          ", \"doc_object_ptr\": "             ~ to!string(cntr_) ~
+          ", \"html_segnames_ptr\": \""        ~ ((lev_markup_number == "4") ? (to!string(html_segnames_ptr)) : "") ~ "\"" ~
+          ", \"obj_cite_number\": "                ~ to!string(obj_cite_number_) ~
+          ", \"lev_markup_number\": "              ~ to!string(lev_markup_number) ~
+          ", \"lev_collapsed_number\": "           ~ to!string(lev_collapsed_number) ~
+          ", \"segment_anchor_tag\": \""           ~ segment_anchor_tag ~ "\"" ~
+          ", \"parent_obj_cite_number\": "         ~ to!string(p_["obj_cite_number"]) ~
+          ", \"parent_lev_markup_number\": "       ~ to!string(p_["lev_markup_number"]) ~
           " }"
         );
         debug(heading) {
@@ -3912,11 +3922,9 @@ template SiSUdocAbstraction() {
             writeln("* ", to!string(_node));
           }
         }
-        debug(node) {
+        debug(nodeheading) {
           if (match(lev_markup_number, rgx.levels_numbered_headings)) {
             writeln("* ", to!string(_node));
-          } else {
-            writeln("* ", to!string(_node));
           }
         }
         JSONValue j = parseJSON(_node);
diff --git a/src/sdp/ao_object_setter.d b/src/sdp/ao_object_setter.d
index 844af9b..35ca768 100644
--- a/src/sdp/ao_object_setter.d
+++ b/src/sdp/ao_object_setter.d
@@ -6,9 +6,14 @@
 template ObjectSetter() {
   /+ structs +/
   struct HeadingAttrib {
-    string lev                  = "9";
-    int lev_markup_number       = 9;
-    int lev_collapsed_number    = 9;
+    string lev                            = "9";
+    int    lev_int_markup                 = 9;
+    int    lev_int_collapsed              = 9;
+    int[]  closes_lev_collapsed           = []; // TODO track
+    int[]  closes_lev_markup              = []; // TODO track
+    int    array_ptr                  = 0;
+  // heading segments, 1~ lev4:
+    int    heading_array_ptr_segments = 0; // TODO
   }
   struct ParaAttrib {
     int indent_start            = 0;
@@ -22,10 +27,22 @@ template ObjectSetter() {
     // no .attrib and no .obj_cite_number
   }
   struct Node {
-    int ocn                     = 0;
-    int parent_lev              = 0;
-    int parent_ocn              = 0;
-    string node                 = "";
+    int ocn                            = 0;
+    string seg_anchor_tag              = "";
+  // parent
+    int parent_lev_int_markup          = 0;
+    int parent_ocn                     = 0;
+    int[] ancestors                    = []; // TODO track
+  // heading:
+    int heading_lev_int_markup         = 0;
+    int heading_lev_int_collapsed      = 0;
+    int[] heading_closes_lev_collapsed = []; // TODO track
+    int[] heading_closes_lev_markup    = []; // TODO track
+    int heading_array_ptr          = 0;
+  // heading segments, 1~ lev4:
+    int heading_array_ptr_segments = 0; // TODO
+  // node info json string:
+    string node                        = "";
   }
   struct ObjComposite {
     string use                  = "";
@@ -59,8 +76,8 @@ template ObjectSetter() {
       in int obj_cite_number,
       in string[] tags,
       in string lev,
-      in int lev_markup_number,
-      in int lev_collapsed_number,
+      in int lev_int_markup,
+      in int lev_int_collapsed,
     ) {
       ObjComposite object_set;
       object_set.use                                 = "content";
@@ -70,9 +87,8 @@ template ObjectSetter() {
       object_set.obj_cite_number                     = (obj_cite_number==0) ? "" : to!string(obj_cite_number);
       object_set.anchor_tags                         ~= tags;
       object_set.heading_attrib.lev                  = lev;
-      object_set.heading_attrib.lev_markup_number    = lev_markup_number;
-      object_set.heading_attrib.lev_collapsed_number = lev_collapsed_number;
-      // object_set.node_structure.node               = _node;
+      object_set.heading_attrib.lev_int_markup       = lev_int_markup;
+      object_set.heading_attrib.lev_int_collapsed    = lev_int_collapsed;
       return object_set;
     }
     auto contents_para(
@@ -81,7 +97,7 @@ template ObjectSetter() {
       in string attrib,
       in int obj_cite_number,
       in int[string] indent,
-      in bool bullet
+      in bool bullet,
     ) {
       ObjComposite object_set;
       object_set.use                      = "content";
@@ -101,7 +117,7 @@ template ObjectSetter() {
       in string attrib,
       in int obj_cite_number,
       in int[string] indent,
-      in bool bullet
+      in bool bullet,
     ) {
       ObjComposite object_set;
       object_set.use                      = "content";
@@ -137,7 +153,7 @@ template ObjectSetter() {
       in string type,
       in string object,
       in string attrib,
-      in int obj_cite_number
+      in int obj_cite_number,
     ) {
       ObjComposite object_set;
       object_set.use                 = "content";
@@ -152,7 +168,7 @@ template ObjectSetter() {
       in string type,
       in string object,
       in string attrib_language_syntax,
-      in int obj_cite_number
+      in int obj_cite_number,
     ) {
       ObjComposite object_set;
       object_set.use                 = "content";
diff --git a/src/sdp/ao_output_debugs.d b/src/sdp/ao_output_debugs.d
index 3c3b101..c6e8ac7 100644
--- a/src/sdp/ao_output_debugs.d
+++ b/src/sdp/ao_output_debugs.d
@@ -6,8 +6,7 @@ template SiSUoutputDebugs() {
     auto abstract_doc_source_debugs(S)(
       auto ref const S         contents,
       string[][string]         document_section_keys_sequenced,
-      string[][string][string] bookindex_unordered_hashes,      // redundant, consider
-      JSONValue[]              biblio,                          // redundant, consider
+      string[]                 html_segnames,
       string[string][string]   dochead_make,
       string[string][string]   dochead_meta,
       string                   fn_src,
@@ -18,30 +17,7 @@ template SiSUoutputDebugs() {
       auto rgx = Rgx();
       auto markup = InlineMarkup();
       string key;
-      struct BookIndexReport {
-        int mkn, skn;
-        auto bookindex_report_sorted(
-          string[][string][string] bookindex_unordered_hashes
-        ) {
-          auto mainkeys=bookindex_unordered_hashes.byKey.array.
-            sort!("toLower(a) < toLower(b)", SwapStrategy.stable).release;
-          foreach (mainkey; mainkeys) {
-            auto subkeys=bookindex_unordered_hashes[mainkey].byKey.array.
-              sort!("toLower(a) < toLower(b)", SwapStrategy.stable).release;
-            foreach (subkey; subkeys) {
-              debug(bookindex) {
-                writeln(
-                  mainkey, ": ",
-                  subkey, ": ",
-                  to!string(bookindex_unordered_hashes[mainkey][subkey])
-                );
-              }
-              ++skn;
-            }
-            ++mkn;
-          }
-        }
-      }
+      
       debug(parent) {
         writefln(
           "%s:%s",
@@ -56,7 +32,7 @@ template SiSUoutputDebugs() {
                   "%s node: %s heading: %s %s",
                   obj.obj_cite_number,
                   obj.node,
-                  obj.lev_markup_number,
+                  obj.lev_int_markup,
                   obj.object,
                 );
               }
@@ -251,12 +227,12 @@ template SiSUoutputDebugs() {
           "%s\n%s\n%s",
           "document header, metadata & make instructions:",
           dochead_meta,
-          pointer_head_main,
+          ptr_head_main,
         );
-        foreach (main_header; pointer_head_main) {
+        foreach (main_header; ptr_head_main) {
           switch (main_header) {
           case "make":
-            foreach (sub_header; pointer_head_sub_make) {
+            foreach (sub_header; ptr_head_sub_make) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -277,12 +253,12 @@ template SiSUoutputDebugs() {
           "%s\n%s\n%s",
           "document header, metadata & make instructions:",
           dochead_meta,
-          pointer_head_main,
+          ptr_head_main,
         );
-        foreach (main_header; pointer_head_main) {
+        foreach (main_header; ptr_head_main) {
           switch (main_header) {
           case "creator":
-            foreach (sub_header; pointer_head_sub_creator) {
+            foreach (sub_header; ptr_head_sub_creator) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -294,7 +270,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "title":
-            foreach (sub_header; pointer_head_sub_title) {
+            foreach (sub_header; ptr_head_sub_title) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -306,7 +282,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "rights":
-            foreach (sub_header; pointer_head_sub_rights) {
+            foreach (sub_header; ptr_head_sub_rights) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -318,7 +294,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "date":
-            foreach (sub_header; pointer_head_sub_date) {
+            foreach (sub_header; ptr_head_sub_date) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -330,7 +306,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "original":
-            foreach (sub_header; pointer_head_sub_original) {
+            foreach (sub_header; ptr_head_sub_original) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -342,7 +318,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "classify":
-            foreach (sub_header; pointer_head_sub_classify) {
+            foreach (sub_header; ptr_head_sub_classify) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -354,7 +330,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "identifier":
-            foreach (sub_header; pointer_head_sub_identifier) {
+            foreach (sub_header; ptr_head_sub_identifier) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -366,7 +342,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "notes":
-            foreach (sub_header; pointer_head_sub_notes) {
+            foreach (sub_header; ptr_head_sub_notes) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -378,7 +354,7 @@ template SiSUoutputDebugs() {
             }
             break;
           case "publisher":
-            foreach (sub_header; pointer_head_sub_publisher) {
+            foreach (sub_header; ptr_head_sub_publisher) {
               if (to!string(dochead_meta[main_header][sub_header]).length > 2) {
                 writefln(
                   "%s:%s: %s",
@@ -394,27 +370,6 @@ template SiSUoutputDebugs() {
           }
         }
       }
-      debug(bookindex) {
-        writefln(
-          "%s\n%s:%s",
-          "-------------------------------",
-          __FILE__,
-          __LINE__,
-        );
-        auto bookindex = BookIndexReport();
-        bookindex.bookindex_report_sorted(bookindex_unordered_hashes);
-      }
-      
-      debug(biblio) {
-        foreach (entry; biblio) {
-          writefln(
-            "%s; (%s)",
-            entry["sortby_deemed_author_year_title"],
-            entry["author"],
-          );
-        }
-      }
-      
       debug(anchor) {
         writefln(
           "%s\n%s:%s",
@@ -442,7 +397,7 @@ template SiSUoutputDebugs() {
         foreach (k; document_section_keys_sequenced["seg"]) {
           foreach (o; contents[k]) {
             if (o.is_a == "heading") {
-              switch (o.heading_attrib.lev_markup_number) {
+              switch (o.heading_attrib.lev_int_markup) {
               case 0:
                 spc="";
                 break;
@@ -478,8 +433,8 @@ template SiSUoutputDebugs() {
                 "%s* %s\n                (markup level: %s; collapsed level: %s)",
                 spc,
                 strip(o.object),
-                o.heading_attrib.lev_markup_number,
-                o.heading_attrib.lev_collapsed_number
+                o.heading_attrib.lev_int_markup,
+                o.heading_attrib.lev_int_collapsed
               );
             }
           }
diff --git a/src/sdp/output_html.d b/src/sdp/output_html.d
index c20d6ef..3767d5a 100644
--- a/src/sdp/output_html.d
+++ b/src/sdp/output_html.d
@@ -14,12 +14,12 @@ template SiSUoutputHTML() {
       ¶",
       obj.obj_cite_number,
       obj.obj_cite_number,
-      obj.heading_attrib.lev_markup_number,
+      obj.heading_attrib.lev_int_markup,
       obj.is_a,
       obj.obj_cite_number,
       obj.obj_cite_number,
       obj.object,
-      obj.heading_attrib.lev_markup_number
+      obj.heading_attrib.lev_int_markup
       );
       return o;
     }
diff --git a/src/sdp/output_hub.d b/src/sdp/output_hub.d
index bdb8480..7235619 100644
--- a/src/sdp/output_hub.d
+++ b/src/sdp/output_hub.d
@@ -7,6 +7,7 @@ template SiSUoutputHub() {
     void hub(S)(
       auto ref const S         contents,
       string[][string]         document_section_keys_sequenced,
+      string[]                 html_segnames,
       string[string][string]   dochead_make,
       string[string][string]   dochead_meta,
       string                   fn_src,
diff --git a/views/version.txt b/views/version.txt
index 58c4aa4..22af559 100644
--- a/views/version.txt
+++ b/views/version.txt
@@ -4,4 +4,4 @@ struct Version {
   int minor;
   int patch;
 }
-enum ver = Version(0, 9, 2);
+enum ver = Version(0, 9, 3);