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% Save file as: MULTICOLS.STY Source: FILESERV@SHSU.BITNET
% multicols.sty version 1.0
% Allows for multiple column typesetting
% From TUGboat, voulme 10 (1989), No. 3
%
% Frank Mittelback
% Electronic Data Systems
% (Deutschland) GmbH
% Eisenstrasse 56
% D-6090 Russelsheim
% Federal Republic of Germany
% Bitnet: pzf5hz@drueds2
%
% Variables:
% \premulticols - If the space left on the page is less than this, a new
% page is started before the multiple columns. Otherwise, a \vskip
% of \multicolsep is added.
% \postmulticols - analogous to \premulticols
% \columnseprule - the width of the rule separating the columns.
%
% Commands:
% \raggedcolumns - don't align bottom lines of columns
% \flushcolumns - align bottom lines (default)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\@ifundefined{mult@cols}{}{\endinput}
\def\multicols#1{\col@number#1\relax
\ifnum\col@number<\@ne
\@warning{Using '\number\col@number' columns doesn't seem a good idea.^^J
I therefore use two columns instead}%
\col@number\tw@ \fi
\@ifnextchar[\mult@cols{\mult@cols[]}}
\def\mult@cols[#1]{\@ifnextchar[%
{\mult@@cols{#1}}%
{\mult@@cols{#1}[\premulticols]}}
\def\mult@@cols#1[#2]{%
\enough@room#2%
#1\par\addvspace\multicolsep
\begingroup
\prepare@multicols\ignorespaces}
\def\enough@room#1{\par \penalty\z@
\page@free \pagegoal
\advance \page@free -\pagetotal
\ifdim \page@free <#1\newpage \fi}
\def\prepare@multicols{%
\output{\global\setbox\partial@page
\vbox{\unvbox\@cclv}}\eject
\vbadness9999 \hbadness5000
\tolerance\multicoltolerance
\doublecol@number\col@number
\multiply\doublecol@number\tw@
\advance\baselineskip\multicolbaselineskip
\advance\@colroom-\ht\partial@page
\vsize\col@number\@colroom
\advance\vsize\c@collectmore\baselineskip
\hsize\columnwidth \advance\hsize\columnsep
\advance\hsize-\col@number\columnsep
\divide\hsize\col@number
\linewidth\hsize
\output{\multi@columnout}%
\multiply\count\footins\col@number
\multiply\skip \footins\col@number
\reinsert@footnotes}
\def\endmulticols{\par\penalty\z@
\output{\balance@columns}\eject
\endgroup \reinsert@footnotes
\global\c@unbalance\z@
\enough@room\postmulticols
\addvspace\multicolsep}
\newcount\c@unbalance \c@unbalance = 0
\newcount\c@collectmore \c@collectmore = 0
\newcount\col@number
\newcount\doublecol@number
\newcount\multicoltolerance \multicoltolerance = 9999
\newdimen\page@free
\newdimen\premulticols \premulticols = 50pt
\newdimen\postmulticols \postmulticols = 20pt
\newskip\multicolsep \multicolsep = 12pt plus 4pt minus 3pt
\newskip\multicolbaselineskip \multicolbaselineskip=0pt
\newbox\partial@page
\def\process@cols#1#2{\count@#1\relax
\loop #2%
\advance\count@\tw@
\ifnum\count@<\doublecol@number
\repeat}
\def\page@sofar{\unvbox\partial@page
\process@cols\z@{\wd\count@\hsize}%
\hbox to\textwidth{%
\process@cols\tw@{\box\count@
\hss\vrule\@width\columnseprule\hss}%
\box\z@}}
\def\reinsert@footnotes{\ifvoid\footins\else
\insert\footins{\unvbox\footins}\fi}
\def\multi@columnout{%
\ifnum\outputpenalty <-\@Mi
\speci@ls \else
\splittopskip\topskip
\splitmaxdepth\maxdepth
\dimen@\@colroom
\divide\skip\footins\col@number
\ifvoid\footins \else
\advance\dimen@-\skip\footins
\advance\dimen@-\ht\footins \fi
\process@cols\tw@{\setbox\count@
\vsplit\@cclv to\dimen@}%
\setbox\z@\vsplit\@cclv to\dimen@
\ifvoid\@cclv \else
\unvbox\@cclv
\penalty\outputpenalty
\fi
\setbox\@cclv\vbox{\page@sofar}%
\@makecol\@outputpage
\global\@colroom\@colht
\process@deferreds
\global\vsize\col@number\@colroom
\global\advance\vsize
\c@collectmore\baselineskip
\multiply\skip\footins\col@number\fi}
\def\speci@ls{%
\typeout{floats and marginpars not allowed inside `multicols' environment}%
\unvbox\@cclv\reinsert@footnotes
\gdef\@currlist{}}
\def\process@deferreds{%
\@floatplacement
\begingroup
\let\@tempb\@deferlist
\gdef\@deferlist{}%
\let\@elt\@scolelt
\@tempb \endgroup}
\newif\ifshr@nking
\def\raggedcolumns{%
\@bsphack\shr@nkingtrue\@esphack}
\def\flushcolumns{%
\@bsphack\shr@nkingfale\@esphack}
\def\balance@columns{%
\splittopskip\topskip
\splitmaxdepth\maxdepth
\setbox\z@\vbox{\unvbox\@cclv}\dimen@\ht\z@
\advance\dimen@\col@number\topskip
\advance\dimen@-\col@number\baselineskip
\divide\dimen@\col@number
\advance\dimen@\c@unbalance\baselineskip
{\vbadness\@M \loop
{\process@cols\@ne{\global\setbox\count@\box\voidb@x}}%
\global\setbox\@ne\copy\z@
{\process@cols\thr@@{\global\setbox\count@\vsplit\@ne to\dimen@}}%
\ifshr@nking \global\setbox\thr@@\vbox{\unvbox\thr@@}%
\fi
\ifdim\ht\@ne >\ht\thr@@
\global\advance\dimen@\p@
\repeat}%
\dimen@\ht\thr@@
\process@cols\z@{\@tempcnta\count@
\advance\@tempcnta\@ne
\setbox\count@\vtop to\dimen@
{\unvbox\@tempcnta
\ifshr@nking\vfill\fi}}%
\global\vsize\@colroom
\global\advance\vsize\ht\partial@page
\page@sofar}
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