OpTeX: the LuaTeX format based on Plain TeX and OPmac Author: Petr Olsak, This software is in public domain. See http://petr.olsak.net/optex Files: base/ ... basic set of macro files used when optex.fmt is generated and more basic macros loaded on demand during document processing. demo/ ... examples: short document: op-demo.tex, short letter: op-letter.tex, presentation slides: op-slides.tex. pkg/ ... external macros. Maybe, they can be created by other authors if the macro file conforms to the rules given in the section 2.2.5 in the OpTeX documentation. doc/ ... PDF version of the OpTeX documentation and sources. History: <0.18> Dec. 2020 Font support for next 9 families added. Font selection system improved. Documentation (especially about font selection system) corrected. Macros supporting key=value included to the format. \foreach macro improved. Concept of multilang in bib rewritten. \opwarning format changed (line numbers are printed too). Several bugs fixed. <0.17> Nov. 2020 optex.lua introduced (instead external ltluatex.lua) hyph.patterns are loaded directly by \patterns, not using lua code \commentchars introduced (comments which are able to interrupt verbatim mode) <0.16> Oct. 2020 callback.register_x introduced, namespaces for packages corrected kerkis and EBGaramond fontfiles added little corrections optex-math manual: Index added <0.15> Jun. 2020 Release for Overleaf - TL2020. More vertical space above in \chap and \secc. <0.14> Jun. 2020 Typeseting Math with OpTeX: new document added. Math macros corrected. In-line verbatim in section titles allowed. \eqbox implemented. "\mnote up", "\displaylines to" (new features implemented) <0.13> May 2020 \table have more features: \tabskip, \table to, \table pxto, \vspan The \eqalign reimplemented to be more flexible. The boundary character ":" introduced in the \table. \| undefined in 8bit math: bug fixed. \isnextchar: \let\tmp=#1 -> \let\tmp= #1 <0.12> May 2020 The external macro qrcode.opm introduced New directory structure: base/, demo/, pkg/, doc/ introduced. \load macro introduced \newif: bug fixed, other bug fixed. <0.11> Apr. 2020 \phi, \varpi in Unicode: bug fixed \mathstyles introduced. <0.10> Apr. 2020 Technical documentation added \_famdecl instedad \_fontdecl in font family files (incompatible change). <0.09> Syntax highlighting implemented. <0.08> \numberedpar implmented. \emergencystretch=20pt added as default. \inoval, \incircle, \clipinoval, \clipincircle imlemented. \puttext, \putpic x,y instead -y,x (incompatible change!) footnotes have separated color stack now. \fnotelinks implemented. Lists by \begitems...\enditems improved (\novspaces \_vspacehalf, \ilevel). <0.07> demos: op-letter.tex and op-slides.tex added. \inkinspic, \transformbox, \slides added. documentation improved and updated. <0.06> tables re-implemented, opmac-rest removed. footnotes, marginal notes reimplemented. sections.opm, graphics.opm, colors.opm, languages re-implemented Cite-bib re-implemented. Index, sorting re-implemented. <0.05> \boldmath reimplemented \fontcolor, \letterspacing implemented font catalogue improved <0.04> references.opl, hyperlinks.opl re-implemented. \fontfam, f-* rewritten: no usage of boundary "..." in \_fontnamegen \fnote{...} corrected: (parameter is not really parameter) verbatim.opl re-implemented + doc added file-ref.opl implemented (new \_Xrefversion{3}) bugfixing <0.03> optex-doc optex.1 included, verbatim.opm re-implmented, math-unicode implemented, usebib.opm + bib-style.opm included \catcodetable stack implemented bugfixing of macros. catcodes.opl: removed, one can use \catcodetable, ... primitives, pdfuni-string: lua code for lua5.3 fixed. <0.02> Released.