step1doc-reform_v0.0.1

14 files changed, 860 insertions, 543 deletions

diff --git a/lib/sdp/ao_abstract_doc_source.d b/lib/sdp/ao_abstract_doc_source.d
index 941c3f0..34e4072 100644
--- a/lib/sdp/ao_abstract_doc_source.d
+++ b/lib/sdp/ao_abstract_doc_source.d
@@ -1,29 +1,31 @@
-/*
+/+
   document abstraction
   ao_abstract_doc_source.d
-*/
++/
 mixin template SiSUdocAbstraction() {
-  class Abstraction {
-  /* abstract marked up document */
+  private:
+  struct Abstraction {
+    /+ ↓ abstract marked up document +/
     auto abstract_doc_source(char[][] markup_sourcefile_content) {
       /+ initialize +/
       mixin ObjectSetters;
       mixin AssertionsOnMarkupDocumentStructure;
       mixin AssertionsOnBlocks;
       mixin ScreenTxtColors;
-      auto rgx = new Rgx();
-      auto set_oa = new ObjectAbstractSet();
-      auto set_header = new HeaderDocMetadataMakeJson();
-      auto notesection = new NotesSection();
-      string[string][131072] contents_arbitrary_max_length_set; // 2000 pg * 50 lines == 100000
-      string[1024] notes;
+      auto rgx = Rgx();
+      auto set_oa = ObjectAbstractSet();
+      auto set_header = HeaderDocMetadataMakeJson();
+      auto notesection = NotesSection();
+      string[string][] contents;
+      mixin Structs;
       string notes_str;
       string[string] object, processing, head;
       string biblio_tag_name, biblio_tag_entry, book_idx_tmp, st;
-      string[1024] biblio_arr_json = biblio_entry_tags_jsonstr;
-      JSONValue[1024] bib_arr_json;
+      string[] biblio_arr_json;
+      JSONValue[] bib_arr_json;
       uint[string] line_occur;
-      uint counter, previous_count, count_biblio_entry, ocn, ocn_, verse_line, bib_entry, heading_pointer, notepoint;
+      uint counter, ocn, ocn_, verse_line, bib_entry, heading_pointer, notepoint, count_biblio_entry;
+      ulong previous_count;
       string indent_first, indent_second;
       string[][string][string] bookindex_unordered_hashes;
       bool bullet = true;
@@ -67,18 +69,18 @@ mixin template SiSUdocAbstraction() {
       auto str_h_4 = "^(none)";
       string content_non_header = "8";
       string node;
-      auto obj_im = new ObjInlineMarkup();
-      auto obj_att = new ObjAttrib();
-      auto object_citation_number = new OCNemitter();
+      auto obj_im = ObjInlineMarkup();
+      auto obj_att = ObjAttrib();
+      auto object_citation_number = OCNemitter();
       auto ft = flag_type.dup;
       int ocn_emit(int ocn_status_flag) {
         return object_citation_number.ocn_emitter(ocn_status_flag);
       }
-      auto bookindex_extract_hash = new BookIndexNuggetHash();
+      auto bookindex_extract_hash = BookIndexNuggetHash();
       string[][string][string] bkidx_hash(string bookindex, int ocn) {
         return bookindex_extract_hash.bookindex_nugget_hash(bookindex, ocn);
       }
-      auto node_construct = new NodeStructureMetadata();
+      auto node_construct = NodeStructureMetadata();
       string node_jstr(
         string lvn,
         int ocn_,
@@ -116,11 +118,20 @@ mixin template SiSUdocAbstraction() {
         "end"   : ""
       ];
       int tell_lo(string color, int ocn, in char[] line) {
-        writeln(scr_txt_marker[color], to!string(ocn), " ", to!string(line));
+        writefln(
+          "%s%s %s",
+          scr_txt_marker[color],
+          to!string(ocn),
+          to!string(line)
+        );
         return 0;
       }
       int tell_l(string color, in char[] line) {
-        writeln(scr_txt_marker[color], line);
+        writefln(
+          "%s%s",
+          scr_txt_marker[color],
+          line
+        );
         return 0;
       }
       scope(success) {
@@ -128,23 +139,26 @@ mixin template SiSUdocAbstraction() {
       scope(failure) {
       }
       scope(exit) {
-        destroy(contents_arbitrary_max_length_set);
+        destroy(contents);
         destroy(object);
         destroy(processing);
         destroy(biblio_arr_json);
       }
       auto dochead_make = parseJSON(header_make_jsonstr).object;
       auto dochead_metadata = parseJSON(header_metadata_jsonstr).object;
+      /+ ↓ loop markup document/text line by line +/
       foreach (line; markup_sourcefile_content) {
-      /* loop markup document/text line by line */
-        /* scope */
+        /+ ↓ markup document/text line by line +/
+        /+ scope +/
         scope(exit) {
         }
         scope(failure) {
-          writeln(__FILE__, ":", __LINE__, " failed here:");
-          writeln("  line: ", line);
-          writeln("  is  : ", object["is"]);
-          writeln("  node: ", node);
+          writefln(
+            "%s:%s failed here: \n  line: %s",
+            __FILE__,
+            __LINE__,
+            line,
+          );
         }
         line = replaceAll(line, rgx.true_dollar, "$$$$");
           // dollar represented as $$ needed to stop submatching on $
@@ -155,13 +169,17 @@ mixin template SiSUdocAbstraction() {
         }
         debug(srclines) {
           if (!line.empty) {                             // source lines, not empty
-            writeln(scr_txt_marker["green"], line);
+            writefln(
+              "%s%s",
+              scr_txt_marker["green"],
+              line
+            );
           }
         }
         if ((!line.empty) && (ft["ocn_status_multi_obj"] == 0)) {
-        /* not multi-line object, check whether ocn is on or turned off */
+        /+ not multi-line object, check whether ocn is on or turned off +/
           if (match(line, rgx.ocn_block_marks)) {
-          /* switch off ocn */
+          /+ switch off ocn +/
             if (match(line, rgx.ocn_off_block)) {
               ft["ocn_status_multi_obj"] = 1;
               debug(ocnoff) {
@@ -198,7 +216,7 @@ mixin template SiSUdocAbstraction() {
           }
         }
         if (ft["code"] == 1) {
-        /* block object: code */
+        /+ block object: code +/
           if (ft["curly_code"] == 1) {
             if (auto m = match(line, rgx.block_curly_code_close)) {
               debug(code) {                              // code (curly) close
@@ -229,26 +247,25 @@ mixin template SiSUdocAbstraction() {
             }
           }
         } else if (!match(line, rgx.regular_parse_skip)) {
-        /* object other than code block object (includes regular text paragraph) */
+        /+ object other than code block object (includes regular text paragraph) +/
           if (((match(line, rgx.heading_biblio)
           || (ft["heading_biblio"] == 1)))
           && (!match(line, rgx.heading))
           && (!match(line, rgx.comment))) {
-          /* within block object: biblio */
+          /+ within block object: biblio +/
             if (match(line, rgx.heading_biblio)) {
               ft["heading_biblio"] = 1;
             }
             if (empty(line) && (bib_entry == 0)) {
-              count_biblio_entry++;
+              ++count_biblio_entry;
+              biblio_arr_json ~= biblio_entry_tags_jsonstr;
               bib_entry = 1;
             }
             debug(biblio) {
-              writeln(
+              writefln(
+                "%s * %s %s",
                 scr_txt_color["yellow"],
-                "* ",
                 scr_txt_color["off"],
-                to!string(count_biblio_entry),
-                " ",
                 line
               );
             }
@@ -257,7 +274,7 @@ mixin template SiSUdocAbstraction() {
               bib_entry = 0;
               st=to!string(bt.captures[1]);
               biblio_tag_entry=to!string(bt.captures[2]);
-              JSONValue j = parseJSON(biblio_arr_json[count_biblio_entry]);
+              JSONValue j = parseJSON(biblio_arr_json[count_biblio_entry-1]); // core.exception.RangeError@lib/sdp/ao_abstract_doc_source.d(288): Range violation (LDC) [: same for 343], fix to subtract 1 done!
               if (match(st, rgx.biblio_abbreviations)) {
                 biblio_tag_name=biblio_tag_map[st];
               } else {
@@ -300,29 +317,28 @@ mixin template SiSUdocAbstraction() {
               auto s = to!string(j);
               s = j.toString();
               debug(biblio) {
-                writeln(
+                writefln(
+                  "%s* %s%s: %s\n%s",
                   scr_txt_color["red"],
-                  "* ",
                   scr_txt_color["off"],
                   biblio_tag_name,
-                  ": ",
-                  biblio_tag_entry
+                  biblio_tag_entry,
+                  j[biblio_tag_name]
                 );
-                writeln(biblio_arr_json[count_biblio_entry]);
                 writeln(j[biblio_tag_name], ":", j[biblio_tag_name]);
               }
-              biblio_arr_json[count_biblio_entry] = s;
+              biblio_arr_json[count_biblio_entry-1] = s;
               biblio_tag_entry="";
             }
           } else if (ft["poem"] == 1) {
-          /* within block object: poem */
+          /+ within block object: poem +/
             if (ft["curly_poem"] == 1) {
               if (auto m = match(line, rgx.block_curly_poem_close)) {
                 object["obj"]="verse"; // check that this is as you please
                 debug(poem) {                            // poem (curly) close
-                  writeln(
+                  writefln(
+                    "%s* [poem curly] %s%s",
                     scr_txt_color["red"],
-                    "* [poem curly] ",
                     scr_txt_color["off"],
                     line
                   );
@@ -332,10 +348,10 @@ mixin template SiSUdocAbstraction() {
                 }
                 debug(poem) {                            // poem (curly) close
                   writeln(__LINE__);
-                  writeln(
+                  writefln(
+                    "%s%s %s",
                     scr_txt_marker["fuchsia"],
                     ocn,
-                    " ",
                     line
                   );
                 }
@@ -354,7 +370,7 @@ mixin template SiSUdocAbstraction() {
                     obj_im.obj_inline_markup(object["is"], object["obj"]);
                   object["attrib"] =
                     obj_att.obj_attributes(object["is"], object["obj"], node);
-                  contents_arbitrary_max_length_set[counter] =
+                  contents ~=
                     set_oa.contents_block(
                       object["is"],
                       object["markup"],
@@ -386,10 +402,12 @@ mixin template SiSUdocAbstraction() {
                   verse_line=1;
                   object["obj"] = processing["verse"];
                   debug(poem) {                          // poem verse
-                    writeln(scr_txt_marker["green"],
-                    ocn,
-                    " curly\n",
-                    object["obj"]);
+                    writefln(
+                      "%s%s curly\n%s",
+                      scr_txt_marker["green"],
+                      ocn,
+                      object["obj"]
+                    );
                   }
                   processing.remove("verse");
                   object["is"] = "verse";
@@ -402,7 +420,7 @@ mixin template SiSUdocAbstraction() {
                   );
                   object["markup"] = obj_im.obj_inline_markup(object["is"], object["obj"]);
                   object["attrib"] = obj_att.obj_attributes(object["is"], object["obj"], node);
-                  contents_arbitrary_max_length_set[counter] =
+                  contents ~=
                     set_oa.contents_block(
                       object["is"],
                       object["markup"],
@@ -422,9 +440,9 @@ mixin template SiSUdocAbstraction() {
               if (auto m = match(line, rgx.block_tic_close)) { // tic_poem_close
                 object["obj"]="verse"; // check that this is as you please
                 debug(poem) {                            // poem (curly) close
-                  writeln(
+                  writefln(
+                    "%s* [poem tic] %s%s",
                     scr_txt_color["red"],
-                    "* [poem tic] ",
                     scr_txt_color["off"],
                     line
                   );
@@ -443,7 +461,7 @@ mixin template SiSUdocAbstraction() {
                     obj_im.obj_inline_markup(object["is"], object["obj"]);
                   object["attrib"] =
                     obj_att.obj_attributes(object["is"], object["obj"], node);
-                  contents_arbitrary_max_length_set[counter] =
+                  contents ~=
                     set_oa.contents_block(
                       object["is"],
                       object["markup"],
@@ -475,10 +493,12 @@ mixin template SiSUdocAbstraction() {
                   verse_line=1;
                   object["obj"] = processing["verse"];
                   debug(poem) {                            // poem (tic) close
-                    writeln(scr_txt_marker["green"],
-                    ocn,
-                    " tic\n",
-                    object["obj"]);
+                    writefln(
+                      "%s%s tic\n%s",
+                      scr_txt_marker["green"],
+                      ocn,
+                      object["obj"]
+                    );
                   }
                   processing.remove("verse");
                   object["is"] = "verse";
@@ -494,7 +514,7 @@ mixin template SiSUdocAbstraction() {
                     obj_im.obj_inline_markup(object["is"], object["obj"]);
                   object["attrib"] =
                     obj_att.obj_attributes(object["is"], object["obj"], node);
-                  contents_arbitrary_max_length_set[counter] =
+                  contents ~=
                     set_oa.contents_block(
                       object["is"],
                       object["markup"],
@@ -511,7 +531,7 @@ mixin template SiSUdocAbstraction() {
                 }
               }
             }
-          /* within block object: group */
+          /+ within block object: group +/
           } else if (ft["group"] == 1) {
             if (ft["curly_group"] == 1) {
               if (auto m = match(line, rgx.block_curly_group_close)) {
@@ -543,7 +563,7 @@ mixin template SiSUdocAbstraction() {
               }
             }
           } else if (ft["block"] == 1) {
-          /* within block object: block */
+          /+ within block object: block +/
             if (ft["curly_block"] == 1) {
               if (auto m = match(line, rgx.block_curly_block_close)) {
                 debug(block) {                           // block (curly) close
@@ -574,7 +594,7 @@ mixin template SiSUdocAbstraction() {
               }
             }
           } else if (ft["quote"] == 1) {
-          /* within block object: quote */
+          /+ within block object: quote +/
             if (ft["curly_quote"] == 1) {
               if (auto m = match(line, rgx.block_curly_quote_close)) {
                 debug(quote) {                           // quote (curly) close
@@ -605,7 +625,7 @@ mixin template SiSUdocAbstraction() {
               }
             }
           } else if (ft["table"] == 1) {
-          /* within block object: table */
+          /+ within block object: table +/
             if (ft["curly_table"] == 1) {
               if (auto m = match(line, rgx.block_curly_table_close)) {
                 debug(table) {                           // table (curly) close
@@ -636,7 +656,7 @@ mixin template SiSUdocAbstraction() {
               }
             }
           } else {
-          /* not within a block group */
+          /+ not within a block group +/
             assert(
               (ft["blocks"] == 0)
               || (ft["blocks"] == 2),
@@ -644,11 +664,11 @@ mixin template SiSUdocAbstraction() {
             );
             assertions_flag_types_block_status_none_or_closed(ft);
             if (auto m = match(line, rgx.block_curly_code_open)) {
-            /* curly code open */
+            /+ curly code open +/
               debug(code) {                              // code (curly) open
-                writeln(
+                writefln(
+                  "%s* [code curly] %s%s",
                   scr_txt_color["blue"],
-                  "* [code curly] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -657,7 +677,7 @@ mixin template SiSUdocAbstraction() {
               ft["code"] = 1;
               ft["curly_code"] = 1;
             } else if (auto m = match(line, rgx.block_curly_poem_open)) {
-            /* curly poem open */
+            /+ curly poem open +/
               object.remove("obj");
               object.remove("markup");
               object.remove("is");
@@ -665,9 +685,9 @@ mixin template SiSUdocAbstraction() {
               object.remove("bookindex");
               processing.remove("verse");
               debug(poem) {                              // poem (curly) open
-                writeln(
+                writefln(
+                  "%s* [poem curly] %s%s",
                   scr_txt_color["red"],
-                  "* [poem curly] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -678,11 +698,11 @@ mixin template SiSUdocAbstraction() {
               ft["poem"] = 1;
               ft["curly_poem"] = 1;
             } else if (auto m = match(line, rgx.block_curly_group_open)) {
-            /* curly group open */
+            /+ curly group open +/
               debug(group) {                             // group (curly) open
-                writeln(
+                writefln(
+                  "%s* [group curly] %s%s",
                   scr_txt_color["blue"],
-                  "* [group curly] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -691,11 +711,11 @@ mixin template SiSUdocAbstraction() {
               ft["group"] = 1;
               ft["curly_group"] = 1;
             } else if (auto m = match(line, rgx.block_curly_block_open)) {
-            /* curly block open */
+            /+ curly block open +/
               debug(block) {                             // block (curly) open
-                writeln(
+                writefln(
+                  "%s* [block curly] %s%s",
                   scr_txt_color["blue"],
-                  "* [block curly] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -704,11 +724,11 @@ mixin template SiSUdocAbstraction() {
               ft["block"] = 1;
               ft["curly_block"] = 1;
             } else if (auto m = match(line, rgx.block_curly_quote_open)) {
-            /* curly quote open */
+            /+ curly quote open +/
               debug(quote) {                             // quote (curly) open
-                writeln(
+                writefln(
+                  "%s* [quote curly] %s%s",
                   scr_txt_color["blue"],
-                  "* [quote curly] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -717,11 +737,11 @@ mixin template SiSUdocAbstraction() {
               ft["quote"] = 1;
               ft["curly_quote"] = 1;
             } else if (auto m = match(line, rgx.block_curly_table_open)) {
-            /* curly table open */
+            /+ curly table open +/
               debug(table) {                             // table (curly) open
-                writeln(
+                writefln(
+                  "%s* [table curly] %s%s",
                   scr_txt_color["blue"],
-                  "* [table curly] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -730,11 +750,11 @@ mixin template SiSUdocAbstraction() {
               ft["table"] = 1;
               ft["curly_table"] = 1;
             } else if (auto m = match(line, rgx.block_tic_code_open)) {
-            /* tic code open */
+            /+ tic code open +/
               debug(code) {                              // code (tic) open
-                writeln(
+                writefln(
+                  "%s* [code tic] %s%s",
                   scr_txt_color["blue"],
-                  "* [code tic] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -743,7 +763,7 @@ mixin template SiSUdocAbstraction() {
               ft["code"] = 1;
               ft["tic_code"] = 1;
             } else if (auto m = match(line, rgx.block_tic_poem_open)) {
-            /* tic poem open */
+            /+ tic poem open +/
               object.remove("obj");
               object.remove("markup");
               object.remove("is");
@@ -751,9 +771,9 @@ mixin template SiSUdocAbstraction() {
               object.remove("bookindex");
               processing.remove("verse");
               debug(poem) {                              // poem (tic) open
-                writeln(
+                writefln(
+                  "%s* [poem tic] %s%s",
                   scr_txt_color["red"],
-                  "* [poem tic] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -764,11 +784,11 @@ mixin template SiSUdocAbstraction() {
               ft["poem"] = 1;
               ft["tic_poem"] = 1;
             } else if (auto m = match(line, rgx.block_tic_group_open)) {
-            /* tic group open */
+            /+ tic group open +/
               debug(group) {                             // group (tic) open
-                writeln(
+                writefln(
+                  "%s* [group tic] %s%s",
                   scr_txt_color["blue"],
-                  "* [group tic] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -777,11 +797,11 @@ mixin template SiSUdocAbstraction() {
               ft["group"] = 1;
               ft["tic_group"] = 1;
             } else if (auto m = match(line, rgx.block_tic_block_open)) {
-            /* tic block open */
+            /+ tic block open +/
               debug(block) {                             // block (tic) open
-                writeln(
+                writefln(
+                  "%s* [block tic] %s%s",
                   scr_txt_color["blue"],
-                  "* [block tic] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -790,11 +810,11 @@ mixin template SiSUdocAbstraction() {
               ft["block"] = 1;
               ft["tic_block"] = 1;
             } else if (auto m = match(line, rgx.block_tic_quote_open)) {
-            /* tic quote open */
+            /+ tic quote open +/
               debug(quote) {                             // quote (tic) open
-                writeln(
+                writefln(
+                  "%s* [quote tic] %s%s",
                   scr_txt_color["blue"],
-                  "* [quote tic] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -803,11 +823,11 @@ mixin template SiSUdocAbstraction() {
               ft["quote"] = 1;
               ft["tic_quote"] = 1;
             } else if (auto m = match(line, rgx.block_tic_table_open)) {
-            /* tic table open */
+            /+ tic table open +/
               debug(table) {                             // table (tic) open
-                writeln(
+                writefln(
+                  "%s* [table tic] %s%s",
                   scr_txt_color["blue"],
-                  "* [table tic] ",
                   scr_txt_color["off"],
                   line
                 );
@@ -816,8 +836,8 @@ mixin template SiSUdocAbstraction() {
               ft["table"] = 1;
               ft["tic_table"] = 1;
             } else if (!line.empty) {
-            /* line not empty */
-            /* non blocks (headers, paragraphs) & closed blocks */
+            /+ line not empty +/
+            /+ non blocks (headers, paragraphs) & closed blocks +/
               assert(
                 !line.empty,
                 "line tested, line not empty surely"
@@ -840,11 +860,13 @@ mixin template SiSUdocAbstraction() {
                 );
               }
               if (auto m = match(line, rgx.book_index)) {
-              /* match book_index */
+              /+ match book_index +/
                 debug(bookindexmatch) {                       // book index
-                  writeln(
-                    scr_txt_color["blue"], "* [bookindex] ", scr_txt_color["off"],
-                    to!string(m.captures[1]), "\n"
+                  writefln(
+                    "%s* [bookindex] %s%s\n",
+                    scr_txt_color["blue"],
+                    scr_txt_color["off"],
+                    to!string(m.captures[1]),
                   );
                   // writeln(scr_txt_marker["blue"], to!string(m.captures[1]), "\n");
                 }
@@ -854,24 +876,24 @@ mixin template SiSUdocAbstraction() {
                 ft["book_index"] = 1;
                 book_idx_tmp = to!string(m.captures[1]);
                 debug(bookindexmatch) {                       // book index
-                  writeln(
+                  writefln(
+                    "%s* [bookindex] %s%s\n",
                     scr_txt_color["blue"],
-                    "* [bookindex] ",
                     scr_txt_color["off"],
-                    book_idx_tmp, "\n"
+                    book_idx_tmp,
                   );
                 }
               } else if (ft["book_index"] == 1 )  {
-              /* book_index flag set */
+              /+ book_index flag set +/
                 if (auto m = match(line, rgx.book_index_close))  {
                   ft["book_index"] = 0;
                   object["bookindex"] = book_idx_tmp ~ to!string(m.captures[1]);
                   debug(bookindexmatch) {                     // book index
-                    writeln(
+                    writefln(
+                      "%s* [bookindex] %s%s\n",
                       scr_txt_color["blue"],
-                      "* [bookindex] ",
                       scr_txt_color["off"],
-                      book_idx_tmp, "\n"
+                      book_idx_tmp,
                     );
                   }
                   book_idx_tmp = "";
@@ -879,14 +901,14 @@ mixin template SiSUdocAbstraction() {
                   book_idx_tmp ~= line;
                 }
               } else {
-              /* not book_index */
+              /+ not book_index +/
                 if (auto m = match(line, rgx.comment)) {
-                /* matched comment */
+                /+ matched comment +/
                   debug(comment) {
                     tell_l("blue", line);
                   }
                   object["obj"] ~= line ~= "\n";
-                  contents_arbitrary_max_length_set[counter] =
+                  contents ~=
                     set_oa.contents_comment(strip(object["obj"]));
                   object.remove("obj");
                   object.remove("markup");
@@ -905,7 +927,7 @@ mixin template SiSUdocAbstraction() {
                   ft["para"] = 0;
                   counter++;
                 } else if (auto m = match(line, rgx.header_make)) {
-                /* matched header_make */
+                /+ matched header_make +/
                   debug(header1) {                          // header
                     tell_l("yellow", line);
                   }
@@ -917,7 +939,7 @@ mixin template SiSUdocAbstraction() {
                   line_occur["header_make"]++;
                   object["obj"] ~= line ~= "\n";
                 } else if (auto m = match(line, rgx.header_metadata)) {
-                /* matched header_metadata */
+                /+ matched header_metadata +/
                   debug(header1) {                          // header
                     tell_l("yellow", line);
                   }
@@ -930,9 +952,9 @@ mixin template SiSUdocAbstraction() {
                   object["obj"] ~= line ~= "\n";
                 } else if (ft["header_make"] == 1
                 && (line_occur["header_make"] > 0)) {
-                /* header_make flag set */
+                /+ header_make flag set +/
                   if (auto m = match(line, rgx.header_sub)) {
-                  /* sub-header */
+                  /+ sub-header +/
                     debug(header1) {
                       tell_l("yellow", line);
                     }
@@ -941,9 +963,9 @@ mixin template SiSUdocAbstraction() {
                   }
                 } else if (ft["header_metadata"] == 1
                 && (line_occur["header_metadata"] > 0)) {
-                /* header_metadata flag set */
+                /+ header_metadata flag set +/
                   if (auto m = match(line, rgx.header_sub)) {
-                  /* sub-header */
+                  /+ sub-header +/
                     debug(header1) {
                       tell_l("yellow", line);
                     }
@@ -954,10 +976,10 @@ mixin template SiSUdocAbstraction() {
                 && (line_occur["heading"] == 0))
                 && ((ft["para"] == 0)
                 && (ft["heading"] == 0))) {
-                /* heading or para but neither flag nor line exists */
+                /+ heading or para but neither flag nor line exists +/
                   if ((to!string(dochead_make["make"]["headings"]).length > 2)
                   && (ft["make_headings"] == 0)) {
-                  /* headings found */
+                  /+ headings found +/
                     debug(headingsfound) {
                       writeln(dochead_make["make"]["headings"]);
                     }
@@ -1026,7 +1048,7 @@ mixin template SiSUdocAbstraction() {
                   && (line_occur["heading"] == 0))
                   && ((ft["para"] == 0)
                   && (ft["heading"] == 0))) {
-                  /* heading make set */
+                  /+ heading make set +/
                     if (match(line, rgx_h_B)) {
                       line = "B~ " ~ line;
                       debug(headingsfound) {
@@ -1071,7 +1093,7 @@ mixin template SiSUdocAbstraction() {
                     }
                   }
                   if (auto m = match(line, rgx.heading)) {
-                  /* heading match */
+                  /+ heading match +/
                     ft["heading"] = 1;
                     ft["header"] = 0;
                     ft["header_make"] = 0;
@@ -1194,7 +1216,7 @@ mixin template SiSUdocAbstraction() {
                       tell_l("yellow", strip(line));
                     }
                   } else if (line_occur["para"] == 0) {
-                  /* para matches */
+                  /+ para matches +/
                     if (auto m = match(line, rgx.para_indent)) {
                       debug(paraindent) {                    // para indent
                         tell_l("blue", line);
@@ -1241,7 +1263,7 @@ mixin template SiSUdocAbstraction() {
                     line_occur["para"]++;
                   }
                 } else if (line_occur["header_make"] > 0) {
-                /* header_make */
+                /+ header_make +/
                 // should be caught by sub-header
                   debug(header) {
                     tell_l("red", line);
@@ -1249,7 +1271,7 @@ mixin template SiSUdocAbstraction() {
                   object["obj"] ~= line ~= "\n";
                   line_occur["header_make"]++;
                 } else if (line_occur["header_metadata"] > 0) {
-                /* header_metadata */
+                /+ header_metadata +/
                 // should be caught by sub-header
                   debug(header) {                          // para
                     tell_l("red", line);
@@ -1257,14 +1279,14 @@ mixin template SiSUdocAbstraction() {
                   object["obj"] ~= line ~= "\n";
                   line_occur["header_metadata"]++;
                 } else if (line_occur["heading"] > 0) {
-                /* heading */
+                /+ heading +/
                   debug(heading) {                         // heading
                     tell_l("blue", line);
                   }
                   object["obj"] ~= line ~= "\n";
                   line_occur["heading"]++;
                 } else if (line_occur["para"] > 0) {
-                /* paragraph */
+                /+ paragraph +/
                   debug(para) {
                     tell_l("blue", line);
                   }
@@ -1273,7 +1295,7 @@ mixin template SiSUdocAbstraction() {
                 }
               }
             } else if (ft["blocks"] == 2) {
-            /* line empty, with blocks flag */
+            /+ line empty, with blocks flag +/
               assert(
                 line.empty,
                 "line should be empty"
@@ -1302,7 +1324,7 @@ mixin template SiSUdocAbstraction() {
                   obj_im.obj_inline_markup(object["is"], object["obj"]);
                 object["attrib"] =
                   obj_att.obj_attributes(object["is"], object["obj"], node);
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_block(
                     object["is"],
                     object["markup"],
@@ -1332,7 +1354,7 @@ mixin template SiSUdocAbstraction() {
                     heading_pointer-1,
                     object["is"]
                   );
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_block_ocn_string(
                     "poem",
                     "",
@@ -1366,7 +1388,7 @@ mixin template SiSUdocAbstraction() {
                   obj_im.obj_inline_markup(object["is"], object["obj"]);
                 object["attrib"] =
                   obj_att.obj_attributes(object["is"], object["obj"], node);
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_block(
                     object["is"],
                     object["markup"],
@@ -1399,7 +1421,7 @@ mixin template SiSUdocAbstraction() {
                   obj_im.obj_inline_markup(object["is"], object["obj"]);
                 object["attrib"] =
                   obj_att.obj_attributes(object["is"], object["obj"], node);
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_block(
                     object["is"],
                     object["markup"],
@@ -1432,7 +1454,7 @@ mixin template SiSUdocAbstraction() {
                   obj_im.obj_inline_markup(object["is"], object["obj"]);
                 object["attrib"] =
                   obj_att.obj_attributes(object["is"], object["obj"], node);
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_block(
                     object["is"],
                     object["markup"],
@@ -1466,7 +1488,7 @@ mixin template SiSUdocAbstraction() {
                   obj_im.obj_inline_markup(object["is"], object["obj"]);
                 object["attrib"] =
                   obj_att.obj_attributes(object["is"], object["obj"], node);
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_block(
                     object["is"],
                     object["markup"],
@@ -1484,8 +1506,8 @@ mixin template SiSUdocAbstraction() {
                 ft["quote"] = 0;
               }
             } else {
-            /* line empty */
-              /* line.empty, post contents, empty variables: */
+            /+ line empty +/
+              /+ line.empty, post contents, empty variables: +/
               assert(
                 line.empty,
                 "line should be empty"
@@ -1496,7 +1518,7 @@ mixin template SiSUdocAbstraction() {
               );
               if ((ft["header_make"] == 1)
               && (line_occur["header_make"] > 0)) {
-              /* header_make instructions (current line empty) */
+              /+ header_make instructions (current line empty) +/
                 auto dochead_metadata_and_make =
                   set_header.header_metadata_and_make_jsonstr(strip(object["obj"]), dochead_metadata, dochead_make);
                 static assert(!isTypeTuple!(dochead_metadata_and_make));
@@ -1517,7 +1539,7 @@ mixin template SiSUdocAbstraction() {
                 processing.remove("verse");
               } else if ((ft["header_metadata"] == 1)
               && (line_occur["header_metadata"] > 0)) {
-              /* header_metadata (current line empty) */
+              /+ header_metadata (current line empty) +/
                 auto dochead_metadata_and_make =
                   set_header.header_metadata_and_make_jsonstr(strip(object["obj"]), dochead_metadata, dochead_make);
                 static assert(!isTypeTuple!(dochead_metadata_and_make));
@@ -1540,7 +1562,7 @@ mixin template SiSUdocAbstraction() {
                 processing.remove("verse");
               } else if ((ft["heading"] == 1)
               && (line_occur["heading"] > 0)) {
-              /* heading object (current line empty) */
+              /+ heading object (current line empty) +/
                 ocn = ocn_emit(ft["ocn_status"]);
                 object["bookindex"] =
                   ("bookindex" in object) ? object["bookindex"] : "";
@@ -1561,7 +1583,7 @@ mixin template SiSUdocAbstraction() {
                 object["attrib"] =
                   obj_att.obj_attributes(object["is"], object["obj"], node);
                 heading_pointer++;
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_heading(
                     ft["ocn_status"],
                     object["markup"],
@@ -1593,7 +1615,7 @@ mixin template SiSUdocAbstraction() {
                 processing.remove("verse");
                 counter++;
               } else if ((ft["para"] == 1) && (line_occur["para"] > 0)) {
-              /* paragraph object (current line empty) */
+              /+ paragraph object (current line empty) +/
                 ocn = ocn_emit(ft["ocn_status"]);
                 object["bookindex"] =
                   ("bookindex" in object) ? object["bookindex"] : "";
@@ -1612,7 +1634,7 @@ mixin template SiSUdocAbstraction() {
                   obj_im.obj_inline_markup(object["is"], object["obj"]);
                 object["attrib"] =
                   obj_att.obj_attributes(object["is"], object["obj"], node);
-                contents_arbitrary_max_length_set[counter] =
+                contents ~=
                   set_oa.contents_para(
                     object["is"],
                     object["markup"],
@@ -1651,47 +1673,52 @@ mixin template SiSUdocAbstraction() {
             } // close else for line empty
           } // close else for not the above
         } // close after non code, other blocks or regular text
-        if (((contents_arbitrary_max_length_set[counter-1]["is"] == "para")
-        || (contents_arbitrary_max_length_set[counter-1]["is"] == "heading"))
+        if (((contents[$-1]["is"] == "para")
+        || (contents[$-1]["is"] == "heading"))
         && (counter-1 > previous_count)) {
-          if (match(contents_arbitrary_max_length_set[counter-1]["obj"],
+          if (match(contents[$-1]["obj"],
           rgx.inline_notes_delimiter_al_regular_number_note)) {
             // endnotes/ footnotes for
             // doc objects other than paragraphs & headings
             // various forms of grouped text
-            previous_count=counter-1;
-            notesection.gather_notes_for_endnote_section(contents_arbitrary_max_length_set, counter-1);
+            previous_count=contents.length -1;
+            notesection.gather_notes_for_endnote_section(
+              contents,
+              contents.length -1
+            );
           }
         }
-      } // closed: loop markup document/text line by line
-      /* post loop markup document/text */
+      } /+ ← closed: loop markup document/text line by line +/
+      /+ ↓ post loop markup document/text +/
       debug(objectrelated2) { // check
           tell_l("blue", line);
       }
-      /*
+      /+
         Backmatter:
         * endnotes
         * glossary
         * references / bibliography
         * book index
-      */
+      +/
       obj_im.obj_inline_markup("doc_end_reset", "");
       auto en_tuple = notesection.endnote_objects(ocn);
       static assert(!isTypeTuple!(en_tuple));
       auto endnotes = en_tuple[0];
       ocn = en_tuple[1];
       debug(endnotes) {
-        writeln(__LINE__, " ", endnotes.length);
+        writefln(
+          "%s %s",
+          __LINE__,
+          endnotes.length
+        );
         foreach (n; endnotes) {
           writeln(n);
         }
       }
-      auto contents = contents_arbitrary_max_length_set[0..counter].dup;
-      auto biblio_unsorted_incomplete = biblio_arr_json[0..count_biblio_entry].dup;
-      // destroy(biblio_arr_json);
-      auto biblio = new Bibliography();
-      auto biblio_ordered = biblio.bibliography(biblio_unsorted_incomplete);
-      auto bi = new BookIndexReportSection();
+      auto biblio_unsorted_incomplete = biblio_arr_json.dup;
+      auto biblio = Bibliography();
+      auto biblio_ordered = biblio.bibliography(biblio_unsorted_incomplete, bib_arr_json);
+      auto bi = BookIndexReportSection();
       auto bi_tuple =
         bi.bookindex_build_section(bookindex_unordered_hashes, ocn);
       static assert(!isTypeTuple!(bi_tuple));
@@ -1739,10 +1766,10 @@ mixin template SiSUdocAbstraction() {
               spc="";
               break;
             }
-            writeln(
-              spc, "* ", " ",
+            writefln(
+              "%s*  $s\n            %s",
+              spc,
               strip(o["obj"]),
-              "\n            ",
               o["attrib"]
             );
             // tell_l("yellow", spc, strip(o["obj"]));
diff --git a/lib/sdp/ao_assertions.d b/lib/sdp/ao_assertions.d
index 8cdbc87..2aa2c1d 100644
--- a/lib/sdp/ao_assertions.d
+++ b/lib/sdp/ao_assertions.d
@@ -1,7 +1,7 @@
-/*
+/+
   assertions
   ao_assertions.d
-*/
++/
 mixin template AssertionsOnMarkupDocumentStructure() {
   auto assertions_doc_structure(string[string] object, uint[string] lv) {
     if (lv["h3"] > 0) {
@@ -107,7 +107,7 @@ mixin template AssertionsOnMarkupDocumentStructure() {
         assert(lv["h5"] == 0);
         assert(lv["h6"] == 0);
         assert(lv["h7"] == 0);
-      } else {
+      } else {  // (lv["h0"] >0)
         assert(lv["h0"] == 0,"error should not enter level A a second time");
       }
       break;
diff --git a/lib/sdp/ao_defaults.d b/lib/sdp/ao_defaults.d
index 50c1b09..166871b 100644
--- a/lib/sdp/ao_defaults.d
+++ b/lib/sdp/ao_defaults.d
@@ -1,7 +1,7 @@
-/*
+/+
   defaults
   ao_defaults.d
-*/
++/
 template SiSUheader() {
   auto header_make_jsonstr = `{
     "make": {
@@ -165,7 +165,7 @@ template SiSUheader() {
   auto config_jsonstr = `{
   }`;
 }
-/* regex flags */
+/+ regex flags +/
 template SiSUrgxInitFlags() {
   int[string] flag_type = [
     "make_headings"        : 0,
@@ -247,8 +247,76 @@ template SiSUbiblio() {
   ]; // is: book, article, magazine, newspaper, blog, other
 }
 template InternalMarkup() {
-  class InternalMarkup {
+  struct InternalMarkup {
     auto en_a_o = "【"; auto en_a_c = "】";
     auto en_b_o = "〖"; auto en_b_c = "〗";
+    // auto segname_prefix_auto_num_extract = "c";
+    // auto segname_prefix_auto_num_provide = "s";
+    // auto segname_prefix_auto_num_other = "x";
+    // auto ocn_id_char = "";                                              //'o'; now as before; remove for html5
+    // auto note = "note_";
+    // auto note_ref = "noteref_";
+    // auto note_astx = "note_astx_";
+    // auto note_ref_astx = "noteref_astx_";
+    // auto note_plus = "note_plus_";
+    // auto note_ref_plus = "noteref_plus_";
+    // auto meta_o = "〔@"; auto meta_c = "〕";
+    // auto lv_o_0 = 0;
+    // auto lv_o_1 = 1;
+    // auto lv_o_2 = 2;
+    // auto lv_o_3 = 3;
+    // auto lv_o_4 = 4;
+    // auto lv_o_5 = 5;
+    // auto lv_o_6 = 6;
+    // auto lv_o_7 = 7;
+    // auto lv_o_8 = 8;
+    // auto lv_o_9 = 9;
+    // auto lv_o = "〔"; auto lv_c = "〕";
+    // auto bl_o = "〔"; auto bl_c = "〕";          // block text mark
+    // auto gr_o = "〔"; auto gr_c = "〕";          // group text mark #REPLACE & RETIRE
+    // auto id_o = "〔"; auto id_c = "〕";          // object id mark
+    // auto tc_o = "『"; auto tc_c = "』";          // table row mark #Mx[:tc_c]="』\n"
+    // auto tc_p = "┆'"
+    // auto pa_o = "〔"; auto pa_c = "〕";          // affects paragraph mark
+    // auto mk_o = "〔"; auto mk_c = "〕";          // generic mark
+    // auto gl_o = "〔"; auto gl_c = "〕";          // glyph
+    // auto fa_o = "〔"; auto fa_o_c = "¤"; auto fa_c_o = "¤"; auto fa_c = "〕";
+    // auto idx_o = "▩"; auto idx_c = "▩";
+    // auto nbsp = "░";                                              // '▭ '
+    // auto br_line = "╱";                                              // lB ▌  9612 ┘ ¶
+    // auto br_nl = "╲";                                              // lB ▌ 』  ┘
+    // auto br_paragraph = "█";                                              // FB █  9608 # PP ∥  8741 #▐  #'┘' #'¶' #FB █  9608  lB ▌  9612   RB ▐  9616
+    // auto br_obj = "break_obj";
+    // auto br_page_line = "▭";
+    // auto br_page = "┼";
+    // auto br_page_new = "╋";
+    // auto lnk_o = "⌠";          lnk_c = "⌡";           // '⌈' '⌋' '⌠' '⌡' #Mx[:lnk_o= '◁'; Mx[:lnk_c= '▷' #‹ ›
+    // auto url_o = "◘"; auto url_c = "◙";
+    // auto rel_o = "⌈"; auto rel_c = "⌋";
+    // auto tag_o = "⌊"; auto tag_c = "⌉";
+    // auto sm_set_o = "◢"; auto sm_set_c = "◣";
+    // auto sm_subset_o = "◢"; auto sm_subset_c = "◣";
+    // auto vline = "┆";                                              //   ¦ |
+    // auto src_bold_o = "!{"; auto src_bold_c = "}!";
+    // auto src_italics_o = "/{"; auto src_italics_c = "}/";
+    // auto src_underscore_o = "_{"; auto src_underscore_c = "}_";
+    // auto src_cite_o = ""{"; auto src_cite_c = "}"";
+    // auto src_insert_o = "+{"; auto src_insert_c = "}+";
+    // auto src_strike_o = "-{"; auto src_strike_c = "}-";
+    // auto src_superscript_o = "^{"; auto src_superscript_c = "}^";
+    // auto src_subscript_o = ";{"; auto src_subscript_c = "}'"
+    // auto src_hilite_o = "*{"; auto src_hilite_c = "}*";
+    // auto src_monospace_o = "#{"; auto src_monospace_c = "}#";
+    // auto srcrgx_bold_o = "\\!\\{";  auto srcrgx_bold_c = "\\}\\!";
+    // auto srcrgx_italics_o = "\\/\\{";  auto srcrgx_italics_c = "\\}\\/";
+    // auto srcrgx_underscore_o = "_\\{"; auto srcrgx_underscore_c = "\\}_";
+    // auto srcrgx_cite_o = "\"\\{"; auto srcrgx_cite_c = "\\}\"";
+    // auto srcrgx_insert_o = "\\+\\{";  auto srcrgx_insert_c = "\\}\\+";
+    // auto srcrgx_strike_o = "\\-\\{";  auto srcrgx_strike_c = "\\}\\-";
+    // auto srcrgx_superscript_o = "\\^\\{";  auto srcrgx_superscript_c = "\\}\\^";
+    // auto srcrgx_subscript_o = ",\\{"; auto srcrgx_subscript_c = "\\},";
+    // auto srcrgx_hilite_o = "\\*\\{";  auto srcrgx_hilite_c = "\\}\\*";
+    // auto srcrgx_monospace_o = "\\#\\{";  auto srcrgx_monospace_c = "\\}\\#";
+    // ⊹
   }
 }
diff --git a/lib/sdp/ao_emitter.d b/lib/sdp/ao_emitter.d
index c9b1a7e..7ed9fa8 100644
--- a/lib/sdp/ao_emitter.d
+++ b/lib/sdp/ao_emitter.d
@@ -1,10 +1,10 @@
-/*
+/+
   emitters
   ao_emitters.d
-*/
++/
 mixin template Emitters() {
   mixin InternalMarkup;
-  class CLI {
+  struct CLI {
     string[string] extract_actions(string cmdlnins, string[string] actions)
     in { }
     body {
@@ -18,7 +18,8 @@ mixin template Emitters() {
       return actions;
     }
   }
-  class OCNemitter : AssertOCN {
+  struct OCNemitter {
+  // class OCNemitter : AssertOCN {
     int ocn, ocn_;
     int ocn_emitter(int ocn_status_flag)
     in { assert(ocn_status_flag <= 2); }
@@ -28,17 +29,19 @@ mixin template Emitters() {
       } else {
         ocn=0;
       }
+      assert(ocn >= 0);
       return ocn;
     }
     invariant() {
     }
   }
-  class ObjAttributes {
+  struct ObjAttributes {
+  // class ObjAttributes : AssertObjAttributes {
     string[string] obj_txt;
     string para_and_blocks(string obj_txt_in)
     in { }
     body {
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
       obj_txt["munge"]=obj_txt_in;
       if (match(obj_txt_in, rgx.para_bullet)) {
         obj_txt["attrib"] =" \"bullet\": \"true\","
@@ -81,6 +84,7 @@ mixin template Emitters() {
       obj_txt["attrib"] = " \"use\": \"content\","
       ~ " \"of\": \"para\","
       ~ " \"is\": \"heading\"";
+      // obj_txt["struct"]=;
       return obj_txt["attrib"];
     }
     invariant() {
@@ -185,7 +189,8 @@ mixin template Emitters() {
     invariant() {
     }
   }
-  class ObjInlineMarkupMunge {
+  struct ObjInlineMarkupMunge {
+  // struct ObjInlineMarkupMunge : AssertObjInlineMarkup {
     string[string] obj_txt;
     int n_foot, n_foot_reg, n_foot_sp_asterisk, n_foot_sp_plus;
     string obj_txt_out, tail, note;
@@ -198,8 +203,8 @@ mixin template Emitters() {
     private auto object_notes_(string obj_txt_in)
     in { }
     body {
-      auto rgx = new Rgx();
-      auto mkup = new InternalMarkup();
+      auto rgx = Rgx();
+      auto mkup = InternalMarkup();
       obj_txt_out = "";
       tail = "";
       obj_txt_in = replaceAll(
@@ -237,6 +242,11 @@ mixin template Emitters() {
             (mkup.en_a_o ~ to!string(n_foot))
           );
           tail = m.post;
+          // if (!empty(m.post)) {
+          //   tail = m.post;
+          // } else {
+          //   tail = "";
+          // }
         }
       } else {
         obj_txt_out = obj_txt_in;
@@ -257,7 +267,7 @@ mixin template Emitters() {
     string para(string obj_txt_in)
     in { }
     body {
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
       obj_txt["munge"]=obj_txt_in;
       obj_txt["munge"]=replaceFirst(obj_txt["munge"], rgx.para_attribs, "");
       obj_txt["munge"]=replaceFirst(obj_txt["munge"], rgx.ocn_off_all, "");
@@ -273,7 +283,7 @@ mixin template Emitters() {
     string heading(string obj_txt_in)
     in { }
     body {
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
       obj_txt["munge"]=obj_txt_in;
       obj_txt["munge"]=replaceFirst(obj_txt["munge"], rgx.heading, "");
       obj_txt["munge"]=replaceFirst(obj_txt["munge"], rgx.ocn_off_all, "");
@@ -364,8 +374,9 @@ mixin template Emitters() {
     invariant() {
     }
   }
-  class ObjInlineMarkup : AssertObjInlineMarkup {
-    auto munge = new ObjInlineMarkupMunge();
+  struct ObjInlineMarkup {
+  // struct ObjInlineMarkup : AssertObjInlineMarkup {
+    auto munge = ObjInlineMarkupMunge();
     string[string] obj_txt;
     string obj_inline_markup(string obj_is_, string obj_raw)
     in { }
@@ -419,13 +430,17 @@ mixin template Emitters() {
     invariant() {
     }
   }
-  class ObjAttrib : AssertObjAttrib {
-    auto attrib = new ObjAttributes();
+  struct ObjAttrib {
+  // struct ObjAttrib : AssertObjAttrib {
+  // auto sink = appender!(char[])();
+    auto attrib = ObjAttributes();
     string[string] obj_attrib;
     string obj_attributes(string obj_is_, string obj_raw, string node)
     in { }
     body {
+      // string s = "{ \"language\": \"D\", \"rating\": 3.14, \"code\": \"42\" }";
       scope(exit) {
+        // destroy(obj_is_);
         destroy(obj_raw);
         destroy(node);
       }
@@ -493,20 +508,24 @@ mixin template Emitters() {
       obj_attrib["json"] = oa_j.toString();
       debug(structattrib) {
         if (oa_j["is"].str() == "heading") {
+          // writeln(__LINE__);
           writeln(obj_attrib["json"]);
+          // writeln(node);
           writeln(
             "is: ", oa_j["is"].str(),
             "; ocn: ", oa_j["ocn"].integer()
           );
         }
       }
+      // obj_attrib["json"]="{}";
       return obj_attrib["json"];
     }
     invariant() {
     }
   }
-  class HeaderDocMetadataMakeJson {
-    auto rgx = new Rgx();
+  struct HeaderDocMetadataMakeJson {
+  // class HeaderMetadataMakeHash : AssertHeaderMetadataMakeJson {
+    auto rgx = Rgx();
     string hm, hs;
     auto header_metadata_and_make_jsonstr(
       string header,
@@ -678,6 +697,15 @@ mixin template Emitters() {
                   case "links":
                     destroy(hm);
                     destroy(hs);
+                    // if (match(hs, rgx.subhead_links)) {
+                    //   if (dochead_metadata[hm][hs].type() == JSON_TYPE.STRING) {
+                    //     dochead_metadata[hm][hs].str = to!string(s.captures[2]);
+                    //   }
+                    // } else {
+                    //   writeln("not a valid header type:", hm, ":", hs);
+                    //   destroy(hm);
+                    //   destroy(hs);
+                    // }
                     break;
                   default:
                     break;
@@ -694,9 +722,12 @@ mixin template Emitters() {
       static assert(!isTypeTuple!(t));
       return t;
     }
+    // invariant() {
+    // }
   }
   class HeaderMetadataMakeHash {
-    auto rgx = new Rgx();
+  // class HeaderMetadataMakeHash : AssertHeaderMetadataMakeHash {
+    auto rgx = Rgx();
     string header_main;
     string[string] head;
     string[string] header_topic_hash(string header)
@@ -743,7 +774,8 @@ mixin template Emitters() {
     invariant() {
     }
   }
-  class BookIndexNuggetHash : AssertBookIndexNuggetHash {
+  struct BookIndexNuggetHash {
+  // class BookIndexNuggetHash : AssertBookIndexNuggetHash {
     string main_term, sub_term, sub_term_bits;
     uint ocn_offset, ocn_endpoint;
     string[] ocns;
@@ -751,9 +783,19 @@ mixin template Emitters() {
     string[][string][string] hash_nugget;
     string[] bi_main_terms_split_arr;
     string[][string][string] bookindex_nugget_hash(string bookindex, int ocn)
-    in { }
+    in {
+      debug(bookindexraw) {
+        mixin ScreenTxtColors;
+        if (!bookindex.empty) {
+          writeln(
+            scr_txt_color["blue"], "* [bookindex] ", scr_txt_color["off"],
+            "[", to!string(ocn), "] ", bookindex
+          );
+        }
+      }
+    }
     body {
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
       if (!bookindex.empty) {
         auto bi_main_terms_split_arr =
           split(bookindex, rgx.bi_main_terms_split);
@@ -796,15 +838,18 @@ mixin template Emitters() {
               ocns=null;
             }
           }
+          // ocns=null;
         }
       }
       hash_nugget = bi;
+      // bi=null; // bi.init; // use to empty for each next object; else, harvest hashes at the end of the document
       return hash_nugget;
     }
     invariant() {
     }
   }
-  class BookIndexReport {
+  struct BookIndexReport {
+  // class BookIndexReport : AssertBookIndexReport {
     int mkn, skn;
     auto bookindex_report_sorted(
       string[][string][string] bookindex_unordered_hashes
@@ -822,13 +867,15 @@ mixin template Emitters() {
               to!string(bookindex_unordered_hashes[mainkey][subkey])
             );
           }
+          // bookindex_the[mkn][mainkey][skn][subkey] ~= (bookindex_unordered_hashes[mainkey][subkey]);
           skn++;
         }
         mkn++;
       }
+      // return bookindex_the;
     }
   }
-  class BookIndexReportIndent {
+  struct BookIndexReportIndent {
     int mkn, skn;
     auto bookindex_report_indented(
       string[][string][string] bookindex_unordered_hashes
@@ -848,16 +895,17 @@ mixin template Emitters() {
               bookindex_unordered_hashes[mainkey][subkey]
             ));
           }
+          // bookindex_the[mkn][mainkey][skn][subkey] ~= (bookindex_unordered_hashes[mainkey][subkey]);
           skn++;
         }
         mkn++;
       }
     }
   }
-  class BookIndexReportSection {
+  struct BookIndexReportSection {
     mixin ObjectSetters;
     int mkn, skn;
-    auto rgx = new Rgx();
+    auto rgx = Rgx();
     auto bookindex_write_section(
       string[][string][string] bookindex_unordered_hashes
     ) {
@@ -894,19 +942,20 @@ mixin template Emitters() {
       string attrib;
       string indent_first;
       string indent_second;
-      auto set_oa = new ObjectAbstractSet();
+      auto set_oa = ObjectAbstractSet();
       auto mainkeys =
         bookindex_unordered_hashes.byKey.array.sort().release;
       string bi_tmp;
-      string[string][1024] bookindex_arbitrary_max_length_set;
+      string[string][] bookindex;
       writeln(mainkeys.length);
+      // B~ Book Index
       type_heading=1;
       bi_tmp = "Book Index";
       attrib="";
       lev="B";
       lvn="1";
       lcn="1";
-      bookindex_arbitrary_max_length_set[mkn] =
+      bookindex ~=
         set_oa.contents_heading(
           type_heading,
           bi_tmp,
@@ -918,13 +967,14 @@ mixin template Emitters() {
         );
       ocn++;
       mkn++;
+      // 1~ Index
       type_heading=1;
       bi_tmp = "Index";
       attrib="";
       lev="1";
       lvn="4";
       lcn="2";
-      bookindex_arbitrary_max_length_set[mkn] =
+      bookindex ~=
         set_oa.contents_heading(
           type_heading,
           bi_tmp,
@@ -938,6 +988,7 @@ mixin template Emitters() {
       mkn++;
       foreach (mainkey; mainkeys) {
         bi_tmp = "!{" ~ mainkey ~ "}! ";
+        // bi_tmp = "_0_1 !{" ~ mainkey ~ "}! ";
         foreach (ref_; bookindex_unordered_hashes[mainkey]["_a"]) {
           auto go = replaceAll(ref_, rgx.book_index_go, "$1");
           bi_tmp ~= " {" ~ ref_ ~ "}#" ~ go ~ ", ";
@@ -961,7 +1012,7 @@ mixin template Emitters() {
         indent_first = "0";
         indent_second = "1";
         attrib="";
-        bookindex_arbitrary_max_length_set[mkn] =
+        bookindex ~=
           set_oa.contents_para(
             type,
             bi_tmp,
@@ -974,8 +1025,6 @@ mixin template Emitters() {
         ocn++;
         mkn++;
       }
-      auto bookindex =
-        bookindex_arbitrary_max_length_set[0..mkn].dup;
       auto t = tuple(bookindex, ocn);
       return t;
     }
@@ -985,7 +1034,8 @@ mixin template Emitters() {
       auto mainkeys =
         bookindex_unordered_hashes.byKey.array.sort().release;
       string bi_tmp;
-      string[1024] bookindex_arbitrary_max_length_set;
+      string[] bookindex;
+      // int bi_num;
       writeln(mainkeys.length);
       foreach (mainkey; mainkeys) {
         bi_tmp = "_0_1 !{" ~ mainkey ~ "}! ";
@@ -999,6 +1049,7 @@ mixin template Emitters() {
           bookindex_unordered_hashes[mainkey].byKey.array.sort().release;
         foreach (subkey; subkeys) {
           bi_tmp ~= subkey ~ ", ";
+          // bi_tmp ~= "  " ~ subkey ~ ", ";
           foreach (ref_; bookindex_unordered_hashes[mainkey][subkey]) {
             auto go = replaceAll(ref_, rgx.book_index_go, "$1");
             bi_tmp ~= " {" ~ ref_ ~ "}#" ~ go ~ ", ";
@@ -1007,23 +1058,21 @@ mixin template Emitters() {
           skn++;
         }
         bi_tmp = replaceFirst(bi_tmp, rgx.trailing_linebreak, "");
-        bookindex_arbitrary_max_length_set[mkn] = bi_tmp;
+        bookindex ~= bi_tmp;
         mkn++;
       }
-      auto bookindex =
-        bookindex_arbitrary_max_length_set[0..mkn].dup;
       return bookindex;
     }
   }
-  class NotesSection {
+  struct NotesSection {
     mixin ObjectSetters;
     string object_notes;
-    int previous_count;
+    ulong previous_count;
     int mkn;
-    auto rgx = new Rgx();
+    auto rgx = Rgx();
     private auto gather_notes_for_endnote_section(
-      string[string][131072] contents_arbitrary_max_length_set,
-      int counter
+      string[string][] contents_arbitrary_max_length_set,
+      ulong counter
     )
     in {
       // endnotes/ footnotes for
@@ -1046,6 +1095,7 @@ mixin template Emitters() {
           writeln(
             "{^{", m.captures[1], ".}^}#noteref_", m.captures[1], " ",
             m.captures[2]); // sometimes need segment name (segmented html & epub)
+          // writeln("{^{", m.captures[1], ".}^}#", contents_arbitrary_max_length_set[counter]["ocn"], " ", m.captures[2]);
         }
         object_notes ~=
           "{^{" ~ m.captures[1] ~ ".}^}#noteref_" ~
@@ -1067,21 +1117,23 @@ mixin template Emitters() {
     in {
     }
     body {
-      auto set_oa = new ObjectAbstractSet();
-      string[string][1024] endnotes_arbitrary_max_length_set;
+      auto set_oa = ObjectAbstractSet();
+      string[string][] endnotes;
       auto endnotes_ = gathered_notes();
+      // auto endnotes_ = (split(object_notes, rgx.break_string))[0..$-1];
       string type;
       int type_heading;
       string lev, lvn, lcn;
       string attrib;
       string indent_first;
       string indent_second;
+      // B~ Endnotes
       type_heading=1;
       attrib="";
       lev="B";
       lvn="1";
       lcn="1";
-      endnotes_arbitrary_max_length_set[mkn] =
+      endnotes ~=
         set_oa.contents_heading(
           type_heading,
           "Endnotes",
@@ -1093,12 +1145,13 @@ mixin template Emitters() {
         );
       ocn++;
       mkn++;
+      // 1~ Endnotes
       type_heading=1;
       attrib="";
       lev="1";
       lvn="4";
       lcn="2";
-      endnotes_arbitrary_max_length_set[mkn] =
+      endnotes ~=
         set_oa.contents_heading(
           type_heading,
           "Endnotes",
@@ -1116,7 +1169,7 @@ mixin template Emitters() {
         indent_first = "0";
         indent_second = "0";
         attrib="";
-        endnotes_arbitrary_max_length_set[mkn] =
+        endnotes ~=
           set_oa.contents_para(
             type,
             endnote,
@@ -1129,28 +1182,27 @@ mixin template Emitters() {
         ocn++;
         mkn++;
       }
-      auto endnotes =
-        endnotes_arbitrary_max_length_set[0..mkn].dup;
       auto t = tuple(endnotes, ocn);
       return t;
     }
   }
-  class Bibliography {
-    public JSONValue[] bibliography(string[] biblio_unsorted_incomplete)
+  struct Bibliography {
+    public JSONValue[] bibliography(ref string[] biblio_unsorted_incomplete, ref JSONValue[] bib_arr_json)
     in { }
     body {
       JSONValue[] biblio_unsorted =
-        biblio_unsorted_complete(biblio_unsorted_incomplete);
+        biblio_unsorted_complete(biblio_unsorted_incomplete, bib_arr_json);
       JSONValue[] biblio_sorted = biblio_sort(biblio_unsorted);
       biblio_debug(biblio_sorted);
       return biblio_sorted;
     }
     final private JSONValue[] biblio_unsorted_complete(
-      string[] biblio_unordered
+      string[] biblio_unordered,
+      ref JSONValue[] bib_arr_json
     ) {
-      JSONValue[1024] bib_arr_json;
-      int count_biblio_entry;
-      count_biblio_entry=0;
+      // JSONValue[] bib_arr_json;
+      // int count_biblio_entry;
+      // count_biblio_entry=0; // watch
       foreach (bibent; biblio_unordered) {
         // update bib to include deemed_author, needed for:
         // sort_bibliography_array_by_deemed_author_year_title
@@ -1169,12 +1221,15 @@ mixin template Emitters() {
              "; "  ~
              j["fulltitle"].str
           );
+          // bib[count_biblio_entry] = j.toString();
         }
-        bib_arr_json[count_biblio_entry] = j;
-        count_biblio_entry++;
+        bib_arr_json ~= j;
+        // count_biblio_entry++;
+        // bib_arr_json[count_biblio_entry] = j;
+        // count_biblio_entry++;
       }
       JSONValue[] biblio_unsorted_array_of_json_objects =
-        bib_arr_json[0..(count_biblio_entry)].dup;
+        bib_arr_json.dup;
       return biblio_unsorted_array_of_json_objects;
     }
     final private JSONValue[] biblio_sort(JSONValue[] biblio_unordered) {
@@ -1187,6 +1242,7 @@ mixin template Emitters() {
         foreach (j; biblio_sorted) {
           if (!empty(j["fulltitle"].str)) {
             writeln(j["sortby_deemed_author_year_title"]);
+            // writeln(j["deemed_author"], " (", j["author"], ") ",  j["fulltitle"]);
           }
         }
       }
@@ -1202,7 +1258,8 @@ mixin template Emitters() {
       }
     }
   }
-  class NodeStructureMetadata : AssertNodeJSON {
+  struct NodeStructureMetadata {
+  // class NodeStructureMetadata : AssertNodeJSON {
     int lv, lv0, lv1, lv2, lv3, lv4, lv5, lv6, lv7;
     uint ocn;
     uint[string] p_; // p_ parent_
@@ -1215,9 +1272,16 @@ mixin template Emitters() {
       string is_
     )
     in {
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
+      assert(is_ != "heading");
+      assert(to!int(ocn_) >= 0);
     }
     body {
+      // scope(failure) {
+      //   writeln(__FILE__, ":", __LINE__, " failed here:");
+      //   writeln("  is  : ", is_);
+      //   writeln("  node: ", node);
+      // }
       assert(is_ != "heading"); // should not be necessary
       assert(to!int(ocn_) >= 0); // should not be necessary
       uint ocn=to!uint(ocn_);
@@ -1239,6 +1303,18 @@ mixin template Emitters() {
         ", \"parent_lvn\": " ~ to!string(p_["lvn"]) ~
         " }"
       );
+      debug(node) {
+        mixin ScreenTxtColors;
+        if (match(lvn, rgx.levels_numbered_headings)) {
+          writeln(scr_txt_marker["yellow"], to!string(node));
+        } else {
+          writeln(scr_txt_marker["white"], to!string(node));
+        }
+      }
+      JSONValue j = parseJSON(node);
+      assert(j["parent_lvn"].integer >= 4);
+      assert(j["parent_lvn"].integer <= 7);
+      assert(j["parent_ocn"].integer >= 0);
       return node;
     }
     invariant() {
@@ -1252,9 +1328,28 @@ mixin template Emitters() {
       string is_
     )
     in {
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
+      assert(is_ == "heading");
+      assert(to!uint(ocn_) >= 0);
+      assert(
+        match(lvn, rgx.levels_numbered),
+        ("not a valid heading level: " ~ lvn ~ " at " ~ to!string(ocn_))
+      );
+      // assert(to!uint(ocn_) >= 0);
+      if (match(lvn, rgx.levels_numbered)) {
+        if (to!uint(lvn) == 0) {
+          assert(to!uint(ocn_) == 1);
+          // writeln(lvn);
+        }
+      }
     }
     body {
+      // scope(failure) {
+      //   writeln(__FILE__, ":", __LINE__, " failed here:");
+      //   writeln("  is  : ", is_);
+      //   writeln("  node: ", node);
+      // }
+      auto rgx = Rgx();
       uint ocn=to!uint(ocn_);
       switch (lvn) { // switch (to!string(lv)) {
       case "0":
@@ -1306,6 +1401,15 @@ mixin template Emitters() {
         p_["lvn"] = 6; p_["ocn"] = lv6;
         break;
       default:
+        // if (lv7 > 0) {
+        //   p_["lvn"] = 7; p_["ocn"] = lv7;
+        // } else if (lv6 > 0) {
+        //   p_["lvn"] = 6; p_["ocn"] = lv6;
+        // } else if (lv5 > 0) {
+        //   p_["lvn"] = 5; p_["ocn"] = lv5;
+        // } else {
+        //   p_["lvn"] = 4; p_["ocn"] = lv4;
+        // }
         break;
       }
       node=("{ " ~
@@ -1319,6 +1423,54 @@ mixin template Emitters() {
         ", \"parent_lvn\": " ~ to!string(p_["lvn"]) ~
         " }"
       );
+      debug(heading) {
+        mixin ScreenTxtColors;
+        if (match(lvn, rgx.levels_numbered_headings)) {
+          writeln(scr_txt_marker["yellow"], to!string(node));
+        }
+      }
+      debug(node) {
+        mixin ScreenTxtColors;
+        if (match(lvn, rgx.levels_numbered_headings)) {
+          writeln(scr_txt_marker["yellow"], to!string(node));
+        } else {
+          writeln(scr_txt_marker["white"], to!string(node));
+        }
+      }
+      JSONValue j = parseJSON(node);
+      assert(j["parent_lvn"].integer <= 7);
+      assert(j["parent_ocn"].integer >= 0);
+      if (match(lvn, rgx.levels_numbered_headings)) {
+        assert(j["lvn"].integer <= 7);
+        assert(j["ocn"].integer >= 0);
+        if (j["parent_lvn"].integer > 0) {
+          assert(j["parent_lvn"].integer < j["lvn"].integer);
+          if (j["ocn"].integer != 0) {
+            assert(j["parent_ocn"].integer < j["ocn"].integer);
+          }
+        }
+        if (j["lvn"].integer == 0) {
+          assert(j["parent_lvn"].integer == 0);
+        } else if  (j["lvn"].integer == 1) {
+          assert(j["parent_lvn"].integer == 0);
+        } else if  (j["lvn"].integer == 2) {
+          assert(j["parent_lvn"].integer == 1);
+        } else if  (j["lvn"].integer == 3) {
+          assert(j["parent_lvn"].integer == 2);
+        } else if  (j["lvn"].integer == 4) {
+          assert(j["parent_lvn"].integer <= 3);
+        } else if  (j["lvn"].integer == 5) {
+          assert(j["parent_lvn"].integer == 4);
+        } else if  (j["lvn"].integer == 6) {
+          assert(j["parent_lvn"].integer == 5);
+        } else if  (j["lvn"].integer == 7) {
+          assert(j["parent_lvn"].integer == 6);
+        } else if  (j["lvn"].integer == 8) {
+          // writeln(j["parent_lvn"].integer);
+          // assert(j["parent_lvn"].integer >= 4);
+          // assert(j["parent_lvn"].integer <= 7);
+        }
+      }
       return node;
     }
     invariant() {
diff --git a/lib/sdp/ao_interface.d b/lib/sdp/ao_interface.d
deleted file mode 100644
index b50bee7..0000000
--- a/lib/sdp/ao_interface.d
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
-  interface
-  ao_interface.d
-*/
-mixin template Interfaces() {
-  interface AssertOCN {
-    int ocn_emitter(int ocn_status_flag)
-      in { assert(ocn_status_flag <= 2); }
-      out(ocn) { assert(ocn >= 0); }
-  }
-  interface AssertObjInlineMarkup {
-    string obj_inline_markup(string obj_raw, string obj_type_)
-      in {
-      }
-      out(inline_markup) {
-      }
-  }
-  interface AssertObjAttrib {
-    string obj_attributes(string obj_raw, string node, string obj_type_)
-      in {
-      }
-      out(obj_attrib_json) {
-      }
-  }
-  interface AssertBookIndexNuggetHash {
-    string[][string][string] bookindex_nugget_hash(string bookindex, int ocn)
-      in {
-        debug(bookindexraw) {
-          mixin ScreenTxtColors;
-          if (!bookindex.empty) {
-            writeln(
-              scr_txt_color["blue"], "* [bookindex] ", scr_txt_color["off"],
-              "[", to!string(ocn), "] ", bookindex
-            );
-          }
-        }
-      }
-      out(hash_nugget) {
-      }
-  }
-  interface AssertBookIndexReport {
-    string[][string][][string][] bookindex_nugget_hash(string[][string][string] bookindex_unordered_hashes)
-      in {
-      }
-  }
-  interface AssertNodeJSON {
-    string node_emitter(
-      string lvn,
-      int ocn_,
-      int counter_,
-      int pointer_,
-      string is_
-    )
-    in {
-      auto rgx = new Rgx();
-      assert(is_ != "heading");
-      assert(to!int(ocn_) >= 0);
-    }
-    out(node) {
-      debug(node) {
-        mixin ScreenTxtColors;
-        if (match(lvn, rgx.levels_numbered_headings)) {
-          writeln(scr_txt_marker["yellow"], to!string(node));
-        } else {
-          writeln(scr_txt_marker["white"], to!string(node));
-        }
-      }
-      JSONValue j = parseJSON(node);
-      assert(j["parent_lvn"].integer >= 4);
-      assert(j["parent_lvn"].integer <= 7);
-      assert(j["parent_ocn"].integer >= 0);
-    }
-    string node_emitter_heading(
-      string lvn,
-      string lcn,
-      int ocn_,
-      int counter_,
-      int pointer_,
-      string is_
-    )
-    in {
-      auto rgx = new Rgx();
-      assert(is_ == "heading");
-      assert(to!uint(ocn_) >= 0);
-      assert(
-        match(lvn, rgx.levels_numbered),
-        ("not a valid heading level: " ~ lvn ~ " at " ~ to!string(ocn_))
-      );
-      if (match(lvn, rgx.levels_numbered)) {
-        if (to!uint(lvn) == 0) {
-          assert(to!uint(ocn_) == 1);
-        }
-      }
-    }
-    out(node) {
-      auto rgx = new Rgx();
-      debug(heading) {
-        mixin ScreenTxtColors;
-        if (match(lvn, rgx.levels_numbered_headings)) {
-          writeln(scr_txt_marker["yellow"], to!string(node));
-        }
-      }
-      debug(node) {
-        mixin ScreenTxtColors;
-        if (match(lvn, rgx.levels_numbered_headings)) {
-          writeln(scr_txt_marker["yellow"], to!string(node));
-        } else {
-          writeln(scr_txt_marker["white"], to!string(node));
-        }
-      }
-      JSONValue j = parseJSON(node);
-      assert(j["parent_lvn"].integer <= 7);
-      assert(j["parent_ocn"].integer >= 0);
-      if (match(lvn, rgx.levels_numbered_headings)) {
-        assert(j["lvn"].integer <= 7);
-        assert(j["ocn"].integer >= 0);
-        if (j["parent_lvn"].integer > 0) {
-          assert(j["parent_lvn"].integer < j["lvn"].integer);
-          if (j["ocn"].integer != 0) {
-            assert(j["parent_ocn"].integer < j["ocn"].integer);
-          }
-        }
-        if (j["lvn"].integer == 0) {
-          assert(j["parent_lvn"].integer == 0);
-        } else if  (j["lvn"].integer == 1) {
-          assert(j["parent_lvn"].integer == 0);
-        } else if  (j["lvn"].integer == 2) {
-          assert(j["parent_lvn"].integer == 1);
-        } else if  (j["lvn"].integer == 3) {
-          assert(j["parent_lvn"].integer == 2);
-        } else if  (j["lvn"].integer == 4) {
-          assert(j["parent_lvn"].integer <= 3);
-        } else if  (j["lvn"].integer == 5) {
-          assert(j["parent_lvn"].integer == 4);
-        } else if  (j["lvn"].integer == 6) {
-          assert(j["parent_lvn"].integer == 5);
-        } else if  (j["lvn"].integer == 7) {
-          assert(j["parent_lvn"].integer == 6);
-        } else if  (j["lvn"].integer == 8) {
-        }
-      }
-    }
-  }
-}
diff --git a/lib/sdp/ao_object_setter.d b/lib/sdp/ao_object_setter.d
index ff76143..ce4611d 100644
--- a/lib/sdp/ao_object_setter.d
+++ b/lib/sdp/ao_object_setter.d
@@ -1,10 +1,21 @@
-/*
+/+
   object setter
   ao_object_setter.d
-*/
++/
 mixin template ObjectSetters() {
-  class ObjectAbstractSet {
+  struct ObjectAbstractSet {
     import std.conv : to;
+    mixin Structs;
+    ObjComposite contents_comment_new(in string object) {
+      ObjComposite object_set;
+      object_set.use                  = "comment";
+      object_set.of                   = "comment";
+      object_set.is_a                 = "comment";
+      object_set.object               = object;
+      // does not have .attrib;
+      // does not have .ocn
+      return object_set;
+    }
     string[string] contents_comment(in string object) {
       string[string] object_set;
       object_set["use"]           = "comment";
@@ -13,6 +24,28 @@ mixin template ObjectSetters() {
       object_set["obj"]           = object;
       return object_set;
     }
+    ObjComposite contents_heading_new(
+      in int type,
+      in string object,
+      in string attrib,
+      in int ocn,
+      in string lev,
+      in string lvn,
+      in string lcn,
+    ) {
+      ObjComposite object_set;
+      object_set.use                  = "content";
+      object_set.of                   = "para";
+      object_set.is_a                 = "heading";
+      object_set.object               = object;
+      object_set.ocn                  = (ocn==0) ? "" : to!string(ocn);
+      object_set.attrib               = attrib;
+      object_set.heading.type         = to!string(type);
+      object_set.heading.lev          = to!string(lev);
+      object_set.heading.lvn          = to!string(lvn);
+      object_set.heading.lcn          = to!string(lcn);
+      return object_set;
+    }
     string[string] contents_heading(
       in int type,
       in string object,
@@ -35,8 +68,29 @@ mixin template ObjectSetters() {
       object_set["attrib"]        = attrib;
       return object_set;
     }
+    ObjComposite contents_para_new(
+      in string is_a,
+      in string object,
+      in string attrib,
+      in int ocn,
+      in string indent_first,
+      in string indent_second,
+      in bool bullet
+    ) {
+      ObjComposite object_set;
+      object_set.use                 = "content";
+      object_set.of                  = "para";
+      object_set.is_a                = "heading";
+      object_set.object              = object;
+      object_set.ocn                 = (ocn==0) ? "" : to!string(ocn);
+      object_set.attrib              = attrib;
+      object_set.para.indent_first        = indent_first;
+      object_set.para.indent_second       = indent_second;
+      object_set.para.bullet              = to!string(bullet);
+      return object_set;
+    }
     string[string] contents_para(
-      in string type,
+      in string is_a,
       in string object,
       in string attrib,
       in int ocn,
@@ -47,7 +101,7 @@ mixin template ObjectSetters() {
       string[string] object_set;
       object_set["use"]           = "content";
       object_set["of"]            = "para";
-      object_set["is"]            = type;
+      object_set["is"]            = is_a;
       object_set["obj"]           = object;
       object_set["ocn"]           = (ocn==0) ? "" : to!string(ocn);
       object_set["indent_first"]  = indent_first;
@@ -56,6 +110,22 @@ mixin template ObjectSetters() {
       object_set["attrib"]        = attrib;
       return object_set;
     }
+    ObjComposite contents_block_new(
+      in string type,
+      in string object,
+      in string attrib,
+      in int ocn
+    ) {
+      ObjComposite object_set;
+      // does not have .attrib;
+      object_set.use                 = "content";
+      object_set.of                  = "block";
+      object_set.is_a                = type;
+      object_set.object              = object;
+      object_set.ocn                 = (ocn==0) ? "" : to!string(ocn);
+      object_set.attrib              = attrib;
+      return object_set;
+    }
     string[string] contents_block(
       in string type,
       in string object,
@@ -71,6 +141,22 @@ mixin template ObjectSetters() {
       object_set["attrib"]        = attrib;
       return object_set;
     }
+    ObjComposite contents_block_ocn_string_new(
+      in string type,
+      in string object,
+      in string ocn,
+      in string node
+    ) {
+      ObjComposite object_set;
+      object_set.use                 = "content";
+      object_set.of                  = "block";
+      object_set.is_a                = type;
+      object_set.object              = object;
+      object_set.ocn                 = ocn;
+      object_set.block_ocn_string.node  = node;
+      // object_set.attrib              = attrib;
+      return object_set;
+    }
     string[string] contents_block_ocn_string(
       in string type,
       in string object,
diff --git a/lib/sdp/ao_output_debugs.d b/lib/sdp/ao_output_debugs.d
index c6bdfe1..d2c2c73 100644
--- a/lib/sdp/ao_output_debugs.d
+++ b/lib/sdp/ao_output_debugs.d
@@ -1,9 +1,9 @@
-/*
+/+
   output debugs
   ao_output_debugs.d
-*/
++/
 template SiSUoutputDebugs() {
-  class SDPoutputDebugs {
+  struct SDPoutputDebugs {
     auto abstract_doc_source_debugs(
       string[string][] contents,
       JSONValue[string] docmake,
@@ -15,13 +15,19 @@ template SiSUoutputDebugs() {
     ) {
       mixin RgxInit;
       mixin ScreenTxtColors;
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
       debug(parent) {
-        writeln(__FILE__, ":", __LINE__);
+        writefln(
+          "%s:%s",
+          __FILE__,
+          __LINE__,
+        );
         foreach (obj; contents) {
           if (obj["use"] == "content") {
             if (obj["is"] == "heading") {
-              writeln(scr_txt_marker["cyan"],
+              writefln(
+                "%s%s node: %s heading: %s %s",
+                scr_txt_marker["cyan"],
                 obj["ocn"],
                 " node: ", obj["node"],
                 " heading: ", obj["lvn"],
@@ -32,15 +38,38 @@ template SiSUoutputDebugs() {
           }
         }
       }
+      debug(dumpdoc) {
+        writefln(
+          "%s\n%s:%s",
+          "-------------------------------",
+          __FILE__,
+          __LINE__,
+        );
+        foreach (obj; contents) {
+          if (obj["use"] == "content") {
+            writefln(
+              "[%s][%s]\n%s",
+              obj["ocn"],
+              obj["is"],
+              obj["obj"]
+            );
+          }
+        }
+      }
       debug(objects) {
-        writeln("-------------------------------");
-        writeln(__FILE__, ":", __LINE__);
+        writefln(
+          "%s\n%s:%s",
+          "-------------------------------",
+          __FILE__,
+          __LINE__,
+        );
         foreach (obj; contents) {
           if (obj["use"] == "content") {
-            writeln(
+            writefln(
+              "%s* [%s][%s] %s%s",
               scr_txt_color["green"],
-              "* [", obj["ocn"], "]",
-              "[", obj["is"], "] ",
+              obj["ocn"],
+              obj["is"],
               scr_txt_color["off"],
               obj["obj"]
             );
@@ -48,17 +77,21 @@ template SiSUoutputDebugs() {
         }
       }
       debug(headermakejson) {
-        writeln("document header, metadata & make instructions:");
-        writeln(dochead);
-        writeln(pointer_head_main);
+        writefln(
+          "%s\n%s\n%s",
+          "document header, metadata & make instructions:",
+          dochead,
+          pointer_head_main,
+        );
         foreach (main_header; pointer_head_main) {
           switch (main_header) {
           case "make":
             foreach (sub_header; pointer_head_sub_make) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(
-                  main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -70,16 +103,21 @@ template SiSUoutputDebugs() {
         }
       }
       debug(headermetadatajson) {
-        writeln("document header, metadata & make instructions:");
-        writeln(dochead);
-        writeln(pointer_head_main);
+        writefln(
+          "%s\n%s\n%s",
+          "document header, metadata & make instructions:",
+          dochead,
+          pointer_head_main,
+        );
         foreach (main_header; pointer_head_main) {
           switch (main_header) {
           case "creator":
             foreach (sub_header; pointer_head_sub_creator) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -88,8 +126,10 @@ template SiSUoutputDebugs() {
           case "title":
             foreach (sub_header; pointer_head_sub_title) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -98,8 +138,10 @@ template SiSUoutputDebugs() {
           case "rights":
             foreach (sub_header; pointer_head_sub_rights) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -108,8 +150,10 @@ template SiSUoutputDebugs() {
           case "date":
             foreach (sub_header; pointer_head_sub_date) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -118,8 +162,10 @@ template SiSUoutputDebugs() {
           case "original":
             foreach (sub_header; pointer_head_sub_original) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -128,8 +174,10 @@ template SiSUoutputDebugs() {
           case "classify":
             foreach (sub_header; pointer_head_sub_classify) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -138,8 +186,10 @@ template SiSUoutputDebugs() {
           case "identifier":
             foreach (sub_header; pointer_head_sub_identifier) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -148,8 +198,10 @@ template SiSUoutputDebugs() {
           case "notes":
             foreach (sub_header; pointer_head_sub_notes) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -158,8 +210,10 @@ template SiSUoutputDebugs() {
           case "publisher":
             foreach (sub_header; pointer_head_sub_publisher) {
               if (to!string(dochead[main_header][sub_header]).length > 2) {
-                writeln(main_header, ":",
-                  sub_header, ": ",
+                writefln(
+                  "%s:%s: %s",
+                  main_header,
+                  sub_header,
                   dochead[main_header][sub_header]
                 );
               }
@@ -171,9 +225,13 @@ template SiSUoutputDebugs() {
         }
       }
       debug(bookindex) {
-        writeln("-------------------------------");
-        writeln(__FILE__, ":", __LINE__);
-        auto bookindex = new BookIndexReport();
+        writefln(
+          "%s\n%s:%s",
+          "-------------------------------",
+          __FILE__,
+          __LINE__,
+        );
+        auto bookindex = BookIndexReport();
         bookindex.bookindex_report_sorted(bookindex_unordered_hashes);
       }
       debug(summary) {
@@ -190,28 +248,39 @@ template SiSUoutputDebugs() {
           }
         }
         debug(headings) {
-          writeln("-------------------------------");
-          writeln(__FILE__, ":", __LINE__);
+          writefln(
+            "%s\n%s:%s",
+            "-------------------------------",
+            __FILE__,
+            __LINE__,
+          );
           foreach (obj; contents) {
             if (obj["is"] == "heading") {
-              writeln(
+              writefln(
+                "%s%s~ [%s] %s",
                 scr_txt_marker["yellow"],
-                obj["lev"], "~ ",
-                "[", obj["ocn"], "] ",
+                obj["lev"],
+                obj["ocn"],
+                // "[", obj["is"], "] ",
                 obj["obj"]
               );
             }
           }
         }
-        writeln(
+        writefln(
+          "%s%s%s\n%s\n%s%s\n%s%s\n%s%s\n%s:%s",
           scr_txt_color["green"],
           "-------------------------------",
           scr_txt_color["off"],
-          "\n", fn_src,
-          "\nlength contents array: ", contents.length,
-          "\nlast ocn: ", check["last_ocn"],
-          "\nlength bookindex: ", bookindex_unordered_hashes.length,
-          "\n", __FILE__, ":", __LINE__,
+          fn_src,
+          "length contents array: ",
+          contents.length,
+          "last ocn: ",
+          check["last_ocn"],
+          "length bookindex: ",
+          bookindex_unordered_hashes.length,
+          __FILE__,
+          __LINE__,
         );
         debug(checkdoc) {
           if (auto mfn=match(fn_src, rgx.src_fn)) {
diff --git a/lib/sdp/ao_read_markup_source.d b/lib/sdp/ao_read_markup_source.d
index 1c574ea..6eaecbe 100644
--- a/lib/sdp/ao_read_markup_source.d
+++ b/lib/sdp/ao_read_markup_source.d
@@ -1,10 +1,10 @@
-/*
+/+
   read markup source
   ao_read_markup_source.d
-*/
++/
 mixin template SiSUmarkupRaw() {
-  class MarkupRaw {
-    auto rgx = new Rgx();
+  struct MarkupRaw {
+    auto rgx = Rgx();
     final private string markupSourceString(in char[] fn_src) {
       enforce(
         exists(fn_src)!=0,
diff --git a/lib/sdp/ao_rgx.d b/lib/sdp/ao_rgx.d
index 7050d25..4c36ff9 100644
--- a/lib/sdp/ao_rgx.d
+++ b/lib/sdp/ao_rgx.d
@@ -1,10 +1,10 @@
-/*
+/+
   regex
   ao_rgx.d
-*/
++/
 mixin template RgxInit() {
-  class Rgx {
-    /* misc */
+  struct Rgx {
+    /+ misc +/
     static flag_action               = ctRegex!(`^(--[a-z][a-z0-9-]+)$`);
     static flag_action_str           = ctRegex!(` (--[a-z][a-z0-9-]+)`);
     static src_pth                   = ctRegex!(`^([a-zA-Z0-9._-]+/)*([a-zA-Z0-9._-]+[.]ss[tm])$`);
@@ -25,19 +25,19 @@ mixin template RgxInit() {
     static levels_markup             = ctRegex!(`^[A-D1-4]$`);
     static levels_numbered           = ctRegex!(`^[0-9]$`);
     static levels_numbered_headings  = ctRegex!(`^[0-7]$`);
-    /* insert markup file */
+    /+ insert markup file +/
     static insert_src_fn_ssi_or_sst  = ctRegex!(`^<<\s*(?P<path>[a-zA-Z0-9._-]+/)*(?P<filename>[a-zA-Z0-9._-]+[.]ss[ti])$`);
     // static insert_ssi_or_sst_fn      = ctRegex!(`^<<\s*[a-zA-Z0-9._-]+[.]ss[ti]`);
-    /* comments */
+    /+ comments +/
     static comment                   = ctRegex!(`^%+ `);
-    /* header */
+    /+ header +/
     static header                    = ctRegex!(`^@([a-z_]+):(?:\s|$)`);
     static header_make               = ctRegex!(`^@(make):(?:\s|$)`);
     static header_metadata           = ctRegex!(`^@([a-z_]+):(?:\s|$)`);
     static header_sub                = ctRegex!(`^[ ]+:([a-z_]+):\s`);
     static head_main                 = ctRegex!(`^@([a-z_]+):\s*(.*)`, "m");
     static head_sub                  = ctRegex!(`^[ ]*:([a-z_]+):\s+(.+)`, "m");
-    /* heading & paragraph operators */
+    /+ heading & paragraph operators +/
     static heading            = ctRegex!(`^:?([A-D1-4])[~]([a-z0-9_.-]*[?]?) `);
     static heading_marker     = ctRegex!(`^:?([A-D1-4])[~]`);
     static heading_title      = ctRegex!(`^:?[A-D1-4][~][a-z0-9_.-]*[?]?\s+(.+?)$`);
@@ -49,7 +49,7 @@ mixin template RgxInit() {
     static para_indent        = ctRegex!(`^_([1-9]) `);
     static para_indent_hang   = ctRegex!(`^_([0-9])_([0-9]) `);
     static para_attribs       = ctRegex!(`^_(([0-9])(_([0-9]))?|_([1-9])?[*]) `);
-    /* blocked markup tics */
+    /+ blocked markup tics +/
     static block_tic_code_open       = ctRegex!("^`{3} (code)");
     static block_tic_poem_open       = ctRegex!("^`{3} (poem)");
     static block_tic_group_open      = ctRegex!("^`{3} (group)");
@@ -57,7 +57,7 @@ mixin template RgxInit() {
     static block_tic_quote_open      = ctRegex!("^`{3} (quote)");
     static block_tic_table_open      = ctRegex!("^`{3} (table)");
     static block_tic_close           = ctRegex!("^(`{3})$","m");
-    /* blocked markup curly */
+    /+ blocked markup curly +/
     static block_curly_code_open     = ctRegex!(`^(code[{].*?$)`);
     static block_curly_code_close    = ctRegex!(`^([}]code)`);
     static block_curly_poem_open     = ctRegex!(`^(poem[{].*?$)`);
@@ -70,7 +70,7 @@ mixin template RgxInit() {
     static block_curly_quote_close   = ctRegex!(`^([}]quote)`);
     static block_curly_table_open    = ctRegex!(`^(table[{].*?$)`);
     static block_curly_table_close   = ctRegex!(`^([}]table)`);
-    /* inline markup font face mod */
+    /+ inline markup font face mod +/
     static inline_emphasis           = ctRegex!(`\*\{(?P<text>.+?)\}\*`);
     static inline_bold               = ctRegex!(`!\{(?P<text>.+?)\}!`);
     static inline_italics            = ctRegex!(`/\{(?P<text>.+?)\}/`);
@@ -79,7 +79,7 @@ mixin template RgxInit() {
     static inline_strike             = ctRegex!(`-\{(?P<text>.+?)\}-`);
     static inline_insert             = ctRegex!(`\+\{(?P<text>.+?)\}\+`);
     static inline_mono               = ctRegex!(`#\{(?P<text>.+?)\}#`);
-    /* inline markup footnotes */
+    /+ inline markup footnotes +/
     static true_dollar                           = ctRegex!(`\$`, "gm");
     static inline_notes_al                       = ctRegex!(`【(?:[*+]\s+|\s*)(.+?)】`, "mg");
     static inline_notes_al_gen                   = ctRegex!(`【.+?】`, "m");
@@ -106,23 +106,23 @@ mixin template RgxInit() {
     static inline_text_and_note_square_sp        = ctRegex!(`(.+?)~\[[*+]+\s+(.+?)\]~`, "mg");
     static inline_text_and_note_square           = ctRegex!(`(.+?)~\[\s*(.+?)\]~`, "mg");
     static inline_note_square_delimiters         = ctRegex!(`(~\[\s*)(.+?)(\]~)`, "mg");
-    /* inline markup book index */
+    /+ inline markup book index +/
     static book_index                = ctRegex!(`^=\{\s*(.+?)\}$`, "m");
     static book_index_open           = ctRegex!(`^=\{\s*([^}]+?)$`);
     static book_index_close          = ctRegex!(`^(.*?)\}$`, "m"); // strip
-    /* no ocn object */
+    /+ no ocn object +/
     static ocn_off                   = ctRegex!(`~#$`, "m");
     static ocn_off_dh                = ctRegex!(`-#$`, "m");
     static ocn_off_all               = ctRegex!(`[~-]#$`, "m");
-    /* no ocn block */
+    /+ no ocn block +/
     static ocn_off_block             = ctRegex!(`^--~#$`);
     static ocn_off_block_dh          = ctRegex!(`^---#$`);
     static ocn_off_block_close       = ctRegex!(`^--\+#$`);
     // static auto_ocn_ignore           = ctRegex!(`^[+~*$-]{3,}$`); // reminder
     static ocn_block_marks           = ctRegex!(`^--[+~-]#$`);
-    /* ignore outside code blocks */
+    /+ ignore outside code blocks +/
     static regular_parse_skip        = ctRegex!(`^(--[+~-]#|-[\\]{2}-|=[.\\]{2}=)$`); // not structural info
-    /* line & page breaks */
+    /+ line & page breaks +/
     static break_line_within_object  = ctRegex!(`[\\]{2}( |$)`);
     // static break_line_break_within_object  = ctRegex!(`( |^)[\\]{2}( |$)`);
     static break_page                = ctRegex!(`^-[\\]{2}-$`);
@@ -131,9 +131,9 @@ mixin template RgxInit() {
     static break_string              = ctRegex!(`』`);
     // ancestry, parent
     static parent                    = ctRegex!(`([0-7]):([0-9]+)`);
-    /* json */
+    /+ json +/
     static tailing_comma             = ctRegex!(`,$`, "m");
-    /* head */
+    /+ head +/
     static main_headers              = ctRegex!(`^(?:creator|title|rights|date|original|classify|identifier|notes|publisher|make|links)$`, "m");
     static subhead_creator           = ctRegex!(`^(?:author|translator|illustrator)$`, "m");
     static subhead_title             = ctRegex!(`^(?:main|sub(?:title)?|full|language|edition|note)$`, "m");
@@ -145,10 +145,10 @@ mixin template RgxInit() {
     static subhead_notes             = ctRegex!(`^(?:abstract|description)$`, "m");
     static subhead_publisher         = ctRegex!(`^(?:name)$`, "m");
     static subhead_make              = ctRegex!(`^(?:cover_image|home_button_image|home_button_text|footer|headings|num_top|breaks|substitute|bold|italics|emphasis|texpdf_font|css)$`, "m");
-    /* biblio tags */
+    /+ biblio tags +/
     static biblio_tags               = ctRegex!(`^(is|au|author_raw|author|author_arr|editor_raw|ed|editor_arr|ti|title|subtitle|fulltitle|lng|language|trans|src|jo|journal|in|vol|volume|edn|edition|yr|year|pl|place|pb|pub|publisher|url|pg|pages|note|short_name|id):\s+(.+)`);
     static biblio_abbreviations      = ctRegex!(`^(au|ed|ti|lng|jo|vol|edn|yr|pl|pb|pub|pg|pgs|sn)$`);
-    /* bookindex split */
+    /+ bookindex split +/
     static bi_main_terms_split       = ctRegex!(`\s*;\s*`);
     static bi_main_term_plus_rest_split = ctRegex!(`\s*:\s*`);
     static bi_sub_terms_plus_ocn_offset_split = ctRegex!(`\s*\|\s*`);
diff --git a/lib/sdp/ao_scan_inserts.d b/lib/sdp/ao_scan_inserts.d
index 54abb8f..f70b2e7 100644
--- a/lib/sdp/ao_scan_inserts.d
+++ b/lib/sdp/ao_scan_inserts.d
@@ -3,20 +3,16 @@
   ao_inserts.d
 +/
 mixin template SiSUdocInserts() {
-  class Inserts {
+  private:
+  struct Inserts {
     auto scan_subdoc_source(
-      char[][] markup_sourcefile_insert_content, string fn_src, int add
+      char[][] markup_sourcefile_insert_content,
+      string fn_src
     ) {
-      char[][100000] cont_arbitrary_max_length_set_;
-      auto ft0 = flag_type.dup;
+      char[][] contents_insert;
       auto ft1 = flag_type.dup;
-      string[string] processing;
-      uint[string] line_occur;
-      auto obj_im = new ObjInlineMarkup();
-      auto obj_att = new ObjAttrib();
-      int[string] counter; counter["add"]=0;
       mixin ScreenTxtColors;
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
       int tell_l(string color, in char[] line) {
         writeln(scr_txt_marker[color], line);
         return 0;
@@ -30,44 +26,36 @@ mixin template SiSUdocInserts() {
           if (auto m = match(line, rgx.block_curly_code_close)) {
             ft1["curly_code"] = 0;
           }
-          cont_arbitrary_max_length_set_[counter["add"]] = line;
-          ++counter["add"]; ++add;
+          contents_insert ~= line;
         } else if (auto m = match(line, rgx.block_curly_code_open)) {
           ft1["curly_code"] = 1;
           ft1["header_make"] = 0;
           ft1["header_metadata"] = 0;
-          cont_arbitrary_max_length_set_[counter["add"]] = line;
-          ++counter["add"]; ++add;
+          contents_insert ~= line;
         } else if (ft1["tic_code"] == 1) {
           ft1["header_make"] = 0;
           ft1["header_metadata"] = 0;
           if (auto m = match(line, rgx.block_tic_close)) {
             ft1["tic_code"] = 0;
           }
-          cont_arbitrary_max_length_set_[counter["add"]] = line;
-          ++counter["add"]; ++add;
+          contents_insert ~= line;
         } else if (auto m = match(line, rgx.block_tic_code_open)) {
           ft1["tic_code"] = 1;
           ft1["header_make"] = 0;
           ft1["header_metadata"] = 0;
-          cont_arbitrary_max_length_set_[counter["add"]] = line;
-          ++counter["add"]; ++add;
+          contents_insert ~= line;
         } else if (
-          (ft1["header_make"] == 1) && (line_occur["header_make"] > 0)
+          (ft1["header_make"] == 1)
           && match(line, rgx.header_sub)
         ) {
             ft1["header_make"] = 1;
             ft1["header_metadata"] = 0;
-            ++line_occur["header_make"];
-            ++counter["add"];
         } else if (
-          (ft1["header_metadata"] == 1) && (line_occur["header_metadata"] > 0)
+          (ft1["header_metadata"] == 1)
           && match(line, rgx.header_sub)
         ) {
             ft1["header_metadata"] = 1;
             ft1["header_make"] = 0;
-            ++line_occur["header_metadata"];
-            ++counter["add"];
         } else if (auto m = match(line, rgx.insert_src_fn_ssi_or_sst)) {
           ft1["header_make"] = 0;
           ft1["header_metadata"] = 0;
@@ -75,7 +63,7 @@ mixin template SiSUdocInserts() {
           auto insert_sub_pth = m.captures[1];
           auto fn_src_insert =
             (markup_src_file_path ~ insert_sub_pth ~ insert_fn);
-          auto raw = new MarkupRaw();
+          auto raw = MarkupRaw();
           auto markup_sourcesubfile_insert_content =
             raw.markupInsertSourceContentRawLineArray(fn_src_insert);
           debug(insert) {                              // insert file
@@ -87,7 +75,7 @@ mixin template SiSUdocInserts() {
               markup_sourcesubfile_insert_content.length
             );
           }
-          auto ins = new Inserts();
+          auto ins = Inserts();
           /+
             1. load file,
             2. read lines;
@@ -100,24 +88,19 @@ mixin template SiSUdocInserts() {
         } else {
           ft1["header_make"] = 0;
           ft1["header_metadata"] = 0;
-          cont_arbitrary_max_length_set_[counter["add"]] = line;
-          ++counter["add"]; ++add;
+          contents_insert ~= line;
         }
       } // end src subdoc (inserts) loop
-      auto contents_ = cont_arbitrary_max_length_set_[0 .. counter["add"]].dup;
-      auto t = tuple(contents_, add);
-      return t;
+      return contents_insert;
     }
-    auto scan_doc_source(char[][] markup_sourcefile_content, string fn_src) {
-      char[][100000] cont_arbitrary_max_length_set; // 2000 pg * 50 lines
-      string[string] processing;
-      uint[string] line_occur;
-      auto obj_im = new ObjInlineMarkup();
-      auto obj_att = new ObjAttrib();
+    auto scan_doc_source(
+      char[][] markup_sourcefile_content,
+      string fn_src
+    ) {
+      char[][] contents;
       auto ft = flag_type.dup;
-      int add;
       mixin ScreenTxtColors;
-      auto rgx = new Rgx();
+      auto rgx = Rgx();
       int tell_l(string color, in char[] line) {
         writeln(scr_txt_marker[color], line);
         return 0;
@@ -131,49 +114,42 @@ mixin template SiSUdocInserts() {
           if (auto m = match(line, rgx.block_curly_code_close)) {
             ft["curly_code"] = 0;
           }
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
+          contents ~= line;
         } else if (auto m = match(line, rgx.block_curly_code_open)) {
           ft["curly_code"] = 1;
           ft["header_make"] = 0;
           ft["header_metadata"] = 0;
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
+          contents ~= line;
         } else if (ft["tic_code"] == 1) {
           ft["header_make"] = 0;
           ft["header_metadata"] = 0;
           if (auto m = match(line, rgx.block_tic_close)) {
             ft["tic_code"] = 0;
           }
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
+          contents ~= line;
         } else if (auto m = match(line, rgx.block_tic_code_open)) {
           ft["tic_code"] = 1;
           ft["header_make"] = 0;
           ft["header_metadata"] = 0;
-          cont_arbitrary_max_length_set[add] = line;
-        } else if ((ft["header_make"] == 1)
-        && (line_occur["header_make"] > 0)
-        && match(line, rgx.header_sub)) {
-          ++line_occur["header_make"];
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
-        } else if ((ft["header_metadata"] == 1)
-        && (line_occur["header_metadata"] > 0)
-        && match(line, rgx.header_sub)) {
-          ++line_occur["header_metadata"];
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
+          contents ~= line;
+        } else if (
+          (ft["header_make"] == 1)
+          && match(line, rgx.header_sub)
+        ) {
+          contents ~= line;
+        } else if (
+          (ft["header_metadata"] == 1)
+          && match(line, rgx.header_sub)
+        ) {
+          contents ~= line;
         } else if (auto m = match(line, rgx.header_make)) {
           ft["header_make"] = 1;
-          ++line_occur["header_make"];
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
+          ft["header_metadata"] = 0;
+          contents ~= line;
         } else if (auto m = match(line, rgx.header_metadata)) {
+          ft["header_make"] = 0;
           ft["header_metadata"] = 1;
-          ++line_occur["header_metadata"];
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
+          contents ~= line;
         } else if (auto m = match(line, rgx.insert_src_fn_ssi_or_sst)) {
           ft["header_make"] = 0;
           ft["header_metadata"] = 0;
@@ -181,7 +157,7 @@ mixin template SiSUdocInserts() {
           auto insert_sub_pth = m.captures[1];
           auto fn_src_insert =
             (markup_src_file_path ~ insert_sub_pth ~ insert_fn);
-          auto raw = new MarkupRaw();
+          auto raw = MarkupRaw();
           auto markup_sourcefile_insert_content =
             raw.markupInsertSourceContentRawLineArray(fn_src_insert);
           debug(insert) {                              // insert file
@@ -192,15 +168,12 @@ mixin template SiSUdocInserts() {
               markup_sourcefile_insert_content.length
             );
           }
-          auto ins = new Inserts();
-          auto t = ins.scan_subdoc_source(
-            markup_sourcefile_insert_content, to!string(fn_src_insert), add
+          auto ins = Inserts();
+          auto contents_insert = ins.scan_subdoc_source(
+            markup_sourcefile_insert_content,
+            to!string(fn_src_insert)
           );
-          static assert(!isTypeTuple!(t));
-          auto tmparr = t[0];
-          auto addsub = t[1];
-          cont_arbitrary_max_length_set[add .. addsub-1] = tmparr[0 .. $-1];
-          add=addsub;
+          contents ~= contents_insert;
           /+
             1. load file,
             2. read lines;
@@ -213,15 +186,12 @@ mixin template SiSUdocInserts() {
         } else {
           ft["header_make"] = 0;
           ft["header_metadata"] = 0;
-          cont_arbitrary_max_length_set[add] = line;
-          ++add;
+          contents ~= line;
         }
       } // end src doc loop
-      auto contents = cont_arbitrary_max_length_set[0..add].dup;
       debug(insert) {                              // insert file
         writeln(__LINE__);
         writeln(contents.length);
-        writeln(add);
       }
       return contents;
     }
diff --git a/lib/sdp/ao_structs.d b/lib/sdp/ao_structs.d
new file mode 100644
index 0000000..0aeb235
--- /dev/null
+++ b/lib/sdp/ao_structs.d
@@ -0,0 +1,43 @@
+/+
+  structs
+  ao_structs.d
++/
+/+ structs +/
+
+mixin template Structs() {
+  struct ObjHeading {
+    string type;
+    string lev;
+    string lvn;
+    string lcn;
+  }
+  struct ObjPara {
+    string indent_first;
+    string indent_second;
+    string bullet;
+  }
+  struct ObjComment {
+    // does not have .attrib;
+    // does not have .ocn
+  }
+  struct ObjBlock {
+  }
+  struct ObjBlockOcnString {
+    // does not have .attrib;
+    string node;
+  }
+  struct ObjComposite {
+    // size_t id;
+    string use;
+    string of;
+    string is_a;
+    string object;
+    string ocn;
+    string attrib;
+    // int ocn;
+    ObjHeading heading;
+    ObjPara para;
+    ObjBlock block;
+    ObjBlockOcnString block_ocn_string;
+  }
+}
diff --git a/lib/sdp/ao_utils.d b/lib/sdp/ao_utils.d
index 20e8988..e5245dd 100644
--- a/lib/sdp/ao_utils.d
+++ b/lib/sdp/ao_utils.d
@@ -1,7 +1,7 @@
-/*
+/+
   utils
   ao_util.d
-*/
++/
 mixin template ScreenTxtColors() {
   string[string] scr_txt_color = [
     "off"           : "\033[0m",
diff --git a/lib/sdp/compile_time_info.d b/lib/sdp/compile_time_info.d
new file mode 100644
index 0000000..e541113
--- /dev/null
+++ b/lib/sdp/compile_time_info.d
@@ -0,0 +1,38 @@
+/+
+  compile_time_info
+  compile_time_info.d
++/
+mixin template CompileTimeInfo() {
+  version(Windows) {
+    pragma(msg, "[ Windows compilation ]");
+    enum os = "Windows";
+  } else version(OSX) {
+    pragma(msg, "[ Mac OS X POSIX System compilation ]");
+    enum os = "OSX";
+  } else version(linux) {
+    pragma(msg, "[ Linux POSIX System compilation ]");
+    enum os = "Linux";
+  } else version(FreeBSD) {
+    pragma(msg, "[ FreeBSD POSIX System compilation ]");
+    enum os = "FreeBSD";
+  } else version(OpenBSD) {
+    pragma(msg, "[ OpenBSD POSIX System compilation ]");
+    enum os = "OpenBSD";
+  } else version(NetBSD) {
+    pragma(msg, "[ NetBSD POSIX System compilation ]");
+    enum os = "NetBSD";
+  } else version(DragonFlyBSD) {
+    pragma(msg, "[ DragonFlyBSD POSIX System compilation ]");
+    enum os = "DragonFlyBSD";
+  } else version(POSIX) {
+    pragma(msg, "[ POSIX System compilation ]");
+    enum os = "POSIX";
+  } else {
+    static assert(0, "OS not listed");
+  }
+  version(D_LP64) {
+    enum bits = "64 bit";
+  } else {
+    enum bits = "32 bit";
+  }
+}
diff --git a/lib/sdp/version.txt b/lib/sdp/version.txt
new file mode 100644
index 0000000..f4dde1a
--- /dev/null
+++ b/lib/sdp/version.txt
@@ -0,0 +1,8 @@
+/+ obt - org generated file +/
+// [used by rdmd]
+struct Version {
+  int major;
+  int minor;
+  int patch;
+}
+enum ver = Version(1, 0, 0);