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path: root/macros/lamstex/inputs/letter.st
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\catcode`\@=11
\let\alloc@\alloc@@

\expandafter\let\csname HL@1\endcsname=\relax
\expandafter\let\csname hl@1\endcsname=\relax

\let\tocfile=\undefined
\let\indexfile=\undefined
\let\indexproofing=\undefined
\let\idefine=\undefined
\let\iabbrev=\undefined
\def"{\Err@{\string" for index marking not used in this style}}
\let\title=\undefined
\let\endtitle=\undefined
\let\author=\undefined
\let\endauthor=\undefined
\let\affil=\undefined
\let\endaffil=\undefined
\let\maketitle=\undefined

\r@ggedbottomtrue
\interlinepenalty=1000
\hsize=6.25truein
\vsize=8.9truein
\parindent=0pt
\parskip=0pt

\def\listbi@{\penalty50 \bigskip}

\let\addressee@=\empty
\let\Date@=\empty
\let\Date@@=\empty
\nopagenumbers
\newif\ifheadline@
\headline@true
\newif\ifNoHead@
\def\noheading{\global\headline@false}
\def\NoHeadings{\global\NoHead@true}

\headline={%
 \ifheadline@
  \ifnum\pageno>\@ne
   \tenrm\frenchspacing To \addressee@\hfil\Date@@\hfil Page \folio
  \else\hfil\fi
 \else\hfil\fi}

\def\beginlinemode@{\endmode@
 \begingroup\obeylines\def\endmode@{\par\endgroup}}
\def\beginparmode@{\endmode@
 \begingroup\parskip\medskipamount\def\endmode@{\par\endgroup}}
\let\endmode@\par

\newdimen\longindentation
\longindentation=4truein
\newbox\returnbox@
\newbox\Returnbox@
\newif\ifreturn@

\let\letter=\relax

\def\return{\return@true\beginlinemode@\getreturnbox@}
{\obeylines%
 \gdef\getreturnbox@%
  {\global\setbox\returnbox@\vbox\bgroup\raggedright%
   \leftskip\longindentation\everypar{\hangindent2em}%
   \def\endmode@{\egroup\endgroup}}}

\def\Return{\begingroup\obeylines\getReturnbox@}
{\obeylines%
 \gdef\getReturnbox@%
  {\global\setbox\Returnbox@\vbox\bgroup\raggedright%
   \leftskip\longindentation\everypar{\hangindent2em}}}
\def\endReturn{\egroup\endgroup}

\def\Signoff{\begingroup\obeylines\Signoff@}
{\obeylines%
 \long\gdef\Signoff@#1\endSignoff{\gdef\signoff{#1}\endgroup}}

\def\date#1{\def\Date@{\hbox to \hsize{\hskip\longindentation
 \ignorespaces#1\unskip\hfil}}\def\Date@@{\ignorespaces#1\unskip}}

\date\today

\newbox\addressbox@
\def\address{\beginlinemode@\getaddress@}
{\obeylines\gdef\getaddress@ #1
  #2
  {#1\gdef\addressee@{#2}%
   \global\setbox\addressbox@\vbox to1truein\bgroup
   \frenchspacing\raggedright%
   \hsize\longindentation\everypar{\hangindent2em}#2
   \def\endmode@{\vfil\egroup\endgroup\makeheading@}}}

\newif\iffoldlines@
\def\foldlines{\global\foldlines@true}

\def\makeheading@{\hrule height\z@\nobreak\vskip3truein
 \iffoldlines@
  \hbox to \hsize{\hfil\rlap{\hskip40pt
   \vrule\width.15truecm\height.4truept\depth\z@}}
  \vskip-.4truept
 \fi
 \vskip-3truein
 \nointerlineskip
 \vbox to 1.5truein{\vskip0pt plus.1fil
  \ifreturn@\box\returnbox@\else\copy\Returnbox@\fi
  \vskip 0pt plus .2fil
  \Date@
  \vskip 0pt plus .4fil}
 \nointerlineskip
 \vbox to 1truein{\vskip 0pt plus .3fil
  \box\addressbox@
 \vskip 0pt plus .7fil}
 \bigskip
 \frenchspacing
 \global\everypar{\global\everypar{\nonfrenchspacing\global\everypar{}}}}

\def\salute{\beginparmode@}

\def\closing{\beginlinemode@\getclosing@}
{\obeylines\gdef\getclosing@ #1
  #2
  {#1\nobreak\bigskip\leftskip\longindentation#2
    \nobreak\bigskip\bigskip\bigskip %
    \def
    {\endgraf\nobreak}}}

\def\annotations
 {\beginlinemode@\nobreak\bigskip\def\par{\endgraf\nobreak}\obeylines\par}

\newif\iffirstpar@

\def\cc
 {\beginlinemode@\firstpar@true\nobreak\bigskip\def\par{\endgraf\nobreak}%
  \everypar{\iffirstpar@\global\firstpar@false\else
   \hphantom{cc\colon@\space}\fi}%
  \obeylines\par cc\colon@\space\ignorespaces}

\def\encl
 {\beginlinemode@\firstpar@true\nobreak\bigskip\def\par{\endgraf\nobreak}%
  \everypar{\iffirstpar@\global\firstpar@false\else
   \hphantom{encl\colon@\space}\fi}%
  \obeylines\par encl\colon@\space\ignorespaces}

\def\ps{\beginparmode@\nobreak
  \interlinepenalty5000 \def\par{\endgraf\penalty5000 }}

\def\endletter{\endmode@\par\vfill\break
  \def\addressee@{}\ifNoHead@\else\global
  \headline@true\fi\return@false\pageno\@ne}

\def\alloc@#1#2#3#4#5{\global\advance\count1#1by\@ne
 \ch@ck#1#4#2\allocationnumber=\count1#1
 \global#3#5=\allocationnumber
 \wlog{\string#5=\string#2\the\allocationnumber}}

\catcode`\@=\active