%% This is part of the OpTeX project, see http://petr.olsak.net/optex

\_codedecl \report {Basic styles of OpTeX <2021-03-10>} % preloaded in format

   \_doc -----------------------------
   We define auxiliary macro first (used by the \^`\address` macro)
   \nl
   The `{`\`\boxlines` `<line-1><eol><line-2><eol>...<line-n><eol>}`
   returns to the outer vertical mode a box with `<line-1>`, next box with
   `<line-2>` etc. Each box has its natural width. This is reason why we cannot
   use paragraph mode where each resulting box has the width `\hsize`.
   The `<eol>` is set active and `\everypar` starts `\hbox{` and active <eol>
   closes this `\hbox` by `}`.
   \_cod -----------------------------

\_def\_boxlines{%
   \_def\_boxlinesE{\_ifhmode\_egroup\_empty\_fi}%
   \_def\_nl{\_boxlinesE}%
   \_bgroup \_lccode`\~=`\^^M\_lowercase{\_egroup\_let~}\_boxlinesE
   \_everypar{\_setbox0=\_lastbox\_endgraf
      \_hbox\_bgroup \_catcode`\^^M=13 \_let\_par=\_nl \_aftergroup\_boxlinesC}%
}
\_def\_boxlinesC{\_futurelet\_next\_boxlinesD}
\_def\_boxlinesD{\_ifx\_next\_empty\_else\_ea\_egroup\_fi}

\_public \boxlines ;

   \_doc -----------------------------
   The \`\report` style initialization macro is defined here.
   \_cod -----------------------------

\_def\_report{
   \_typosize[11/13.2]
   \_vsize=\_dimexpr \_topskip + 52\_baselineskip \_relax % added 2020-03-28
   \_let\_titfont=\_chapfont
   \_titskip=3ex
   \_eoldef\_author##1{\_removelastskip\_bigskip
      {\_leftskip=0pt plus1fill \_rightskip=\_leftskip \_it \_noindent ##1\_par}\_nobreak\_bigskip
   }
   \_public \author ;
   \_parindent=1.2em \_iindent=\_parindent \_ttindent=\_parindent
   \_footline={\_global\_footline={\_hss\_rmfixed\_folio\_hss}}
}

   \_doc -----------------------------
   The \`\letter` style initialization macro is defined here.

   The `\letter` defines \`\address` and \`\subject` macros.

   See the files `demo/op-letter-*.tex` for usage examples.
   \_cod -----------------------------

\_def\_letter{
   \_def\_address{\_vtop\_bgroup\_boxlines \_parskip=0pt \_let\_par=\_egroup}
   \_def\_subject{{\_bf \_mtext{subj}: }}
   \_public \address \subject ;
   \_typosize[11/14]
   \_vsize=\_dimexpr \_topskip + 49\_baselineskip \_relax % added 2020-03-28
   \_parindent=0pt
   \_parskip=\_medskipamount
   \_nopagenumbers
}
\_public \letter \report ;

   \_doc -----------------------------
   The \`\slides` macro reads macro file `slides.opm`, see the section~\ref[slides].
   \_cod -----------------------------

\_def\_slides{\_par
  \_opinput{slides.opm}
  \_adef*{\_relax\_ifmmode*\_else\_ea\_startitem\_fi}
}
\_public \slides ;

\_endcode % -------------------------------------

2021-03-10 \ifmmode* added to \adef*
2020-03-28 released