%%%%%% example of use:
% \input model
% \totalpages=5 % if you want the total number of pages to appear in the heading
% \centerline{title}
% \centerline{authors names}
% \endoftitle
% rest of paper
% \endofpaper\end


\newdimen\fullhsize     \fullhsize=42truepc
\newdimen\fullvsize     \fullvsize=52truepc
\newdimen\colhsize      \colhsize=20truepc
\newdimen\topvsize      \topvsize=10truepc % this number can be changed
\newdimen\shortvsize    
\newif\iftitlepage      \titlepagetrue
\newbox\leftcolumn      \newbox\rightcolumn     \newbox\topcolumn
\newcount\totalpages    \totalpages=0   % specify this if you want page numbers
\output{
\iftitlepage
        \if T\column
                \global\shortvsize=\fullvsize
                \global\advance\shortvsize by -\topvsize
                \global\hsize\colhsize  \global\vsize\shortvsize
                \global\setbox\topcolumn=\columnbox 
                \global\let\column=L
        \else   \if L\column
                        \global\setbox\leftcolumn=\columnbox
                        \global\let\column=R
                \else   \shipout\vbox to \fullvsize{\pagenumberbox
                                \box\topcolumn
                                \vss
                                \hbox to \fullhsize{\box\leftcolumn
                                        \hfill\columnbox}}
                        \advancepageno
                        \global\let\column=L
                        \global\titlepagefalse
                        \global\vsize=\fullvsize
                \fi
        \fi
\else   \if L\column
                \global\setbox\leftcolumn=\columnbox
                \global\let\column=R
        \else   \shipout\vbox to \fullvsize{\pagenumberbox
                        \hbox to\fullhsize{\box\leftcolumn
                                \hfill\columnbox}}
                \advancepageno
                \global\let\column=L
        \fi
\fi}

\def\columnbox{\leftline{\pagebody}}

\def\pagenumberbox{\baselineskip0pt\lineskip0pt
        \vbox to 0pt{\vss\hbox to \fullhsize{\hfil\tenrm
          Page \folio\ifnum\totalpages>0\ of \number\totalpages.\fi\hfil}
         \vskip1pc}}

\let\column=T
\vsize=\topvsize        \hsize=\fullhsize

\def\endoftitle{\par\vfill\eject}

\def\endofpaper{\par\vfill\supereject\if R\column \null\vfill\eject\fi}

% 8 point footnotes
\catcode`@=11 % allow at signs in following entry
\def\vfootnote#1{\insert\footins\bgroup
  \eightpoint
  \interlinepenalty\interfootnotelinepenalty
  \splittopskip\ht\strutbox % top baseline for broken footnotes
  \splitmaxdepth\dp\strutbox \floatingpenalty\@MM
  \leftskip\z@skip \rightskip\z@skip \spaceskip\z@skip \xspaceskip\z@skip
  \textindent{#1}\footstrut\futurelet\next\fo@t}
\catcode`@=12 % at signs are no longer letters

\def\eightpoint{\let\rm=\eightrm
\setbox\strutbox=\hbox{\vrule height7pt depth2pt width0pt}%
\rm\baselineskip=9pt}
\font\eightrm=cmr8

\def\eatone#1{}

% \unnumberedfootnote{...text...} gives an unnumbered footnote
% \footnote{symbol/number}{...text...} gives a labelled footnote
\def\unnumberedfootnote{\footnote{\eatone}}


% \acmpermission puts the ACM permission text in a unnumbered footnote
\def\acmpermission{\unnumberedfootnote{Permission to copy without fee all or
  part of this material is granted provided that the copies are not made
  or distributed for direct commercial advantage, the ACM copyright notice
  and the title of the publication and its date appear, and notice is
  given that copying is by permission of the Association of Computing
  Machinery.
To copy otherwise, or to republish, requires a fee and/or
  specific permission.}}