2024-04-25  Keith Marshall  <address@hidden>
 
         Add groff_toc.7 manual page.
 
         * man/groff_toc.7.man: New file.
         * Makefile.in (manpages): Add reference to...
         (groff_toc.7): ...this.
 
 2024-04-23  Keith Marshall  <address@hidden>
 
         Create example macros for groff_toc integration.
 
         * pdfroff.ms (XH-UPDATE-TOC, toc.outline, toc.refmark)
         (toc.pageref, toc.end): Factor out; relocate to, and include...
         * tmac/spdf-toc.tmac: ...this new file.
 
         * Makefile.in (pdfmark.pdf): Add dependency on...
         (spdf-toc.tmac): ...this.
 
 2024-04-19  Keith Marshall  <address@hidden>
 
         Reorganize manpage sources; add pdfroff.7
 
         * man: New directory; relocate...
         * pdfroff.1.man: ...this file, without change, to...
         * man/pdfroff.1.man: ...here.
 
         * man/pdfroff.7.man: New file.
 
         * Makefile.in [vpath] (%.man): Note change of directory.
         (all-manpages, all-pdf-manpages): New make goals; alias to...
         (manpages, pdf-manpages): ...these respectively; use them...
         (%:%.man, %.pdf:%.man): ...here, converting each of these normal
         pattern rules to static pattern rules, respectively.
         (manpage_update_script): Add translation for...
         (SITE_TMACDIR): ...this.
 
 2024-04-13  Keith Marshall  <address@hidden>
 
         Adopt standard man-pages(7) styling conventions.
 
         * tmac/anpdf.tmac [-dMF=R] (anpdf-ic): Kludge it, so that it
         is interpreted as if it were -dMF=B, when processed within...
         (MR): ...this macro's context.
 
         * pdfroff.1.man (pdfroff): Set all references in bold type.
         (awk, gawk, groff, gs, mawk, mktemp, nawk, sed, groff_tmac): add
         manual section references, as appropriate, and set all using...
         (MR): ...this; replicate all, as an enumerated list, under...
         (See also): ...this section heading.
         (-rCS, -rCT, -dMF) [\n(.g]: Preserve initial settings, on entry,
         and subsequently restore them, on exit; internally...
         (CS, CT): ...set both to one, for standards conformance.
         (MF): Keep initial setting, until TH has been evaluated, then
         set it to "B", for standard conformant evaluation of...
         (MR): ...this, on every occasion of its use.
 
 2024-04-11  Keith Marshall  <address@hidden>
 
         A minor pdfroff.1 manpage correction.
 
         * pdfroff.1.man (TH): s/groff/groff-pdfmark/
         (AUTHORS): Refer to author's "OSDN web-site", in preference
         to "OSDN site".
 
         * Makefile.in (MANPAGE_DATE): New user overridable variable,
         specifying the publication date for all generated manual pages;
         define it, by shell substitution, to reflect current date.
         (manpage_update_script): Use it, in substitution for...
         (MDATE): ...this field value.
 
 2024-04-11  Keith Marshall  <address@hidden>
 
         Revisit dynamic identifier names with invalid content.
 
         * tmac/pdfmark.tmac (pdf*href.format): Simplify change from
         2024-03-25; test identifier for validity, as "while" condition,
         then break loop if no matching macro identifier defined.
         (pdfbookmark, pdf*href, pdf*href-D, pdf*href-M, pdfnote): Use
         corresponding while loop control logic.
 
 2024-04-08  Keith Marshall  <address@hidden>
 
         Describe duplex printing layout adjustment techniques.
 
         * pdfmark.ms (Section 3.1.3, Section 4.2): Add content.
         (PO): Compute initial value, to balance left and right margins.
         [duplex] (PO): Tweak assignment syntax; add sanity checks.
         [duplex] (BT): Assign alternating PO, only as required.
         (PG-ADVANCE-TO-ODD): Simplify, and rename it as...
         (NEW-RECTO-PAGE): ...this; update references.
 
 2024-04-04  Keith Marshall  <address@hidden>
 
         Eliminate trailing white-space from document source.
 
         * pdfmark.ms pdfroff.sh tmac/pdfmark.tmac tmac/s.tmac
         * fdl/fdl-v1.3.txt fdl/Makefile.sub: Delete all extraneous
         white-space, where present, from the end of every input line.
 
 2024-03-25  Keith Marshall  <address@hidden>
 
         Avoid dynamic identifier names with invalid content.
 
         * tmac/pdfmark.tmac (pdf*href.format): Verify each potential
         formatting keyword, read from the input data stream, as a valid
         groff identifier, before attempting to match it.
 
 2023-12-17  Keith Marshall  <address@hidden>
 
         Designate the GNU Free Documentation License as invariant.
 
         * cover.ms (pub@licensing): Update grant of permissions to copy,
         distribute, and/or modify, to declare Appendix A, the content of
         which is the GNU Free Documentation License, as "invariant", thus
         forbidding its modification in any redistributed publication of
         the associated document.