% ACMCONF DOCUMENT CLASS

%    adapted from ARTICLE document style by Ken Traub

%    Hacked for [preprint] option by Olin Shivers 4/91

%    Fixed up for LaTeX version 2e [compatibility mode] by Peter Lee 10/9

%       (with help from Simon Peyton Jones)

%    Converted to a LaTeX2e document class by David A. Berson 11/94

%

% ARTICLE DOCUMENT STYLE -- Released 16 March 1988

%    for LaTeX version 2.09

% Copyright (C) 1988 by Leslie Lamport

% To do:

%  - Possibly move the commands related to 9pt size to a file size9.clo

%    and write the stuff to unpack both acmconf.cls and size9.clo files

%    from a single distribution file.

%%% ACMCONF is a document class for producing two-column camera-ready pages for

%%% ACM conferences, according to ACM specifications.  The main features of

%%% this class are:

%%%

%%% 1)  Two columns.

%%% 2)  Side and top margins of 4.5pc, bottom margin of 7.5pc, column gutter of

%%%     2pc, hence columns are 20pc wide and 54pc tall.  (6pc = 1in, approx)

%%% 3)  First page has title information, and an extra 4.5pc of space at the

%%%     bottom of the first column for the ACM copyright notice. (You must

%%%     use one of the commands \copyrightspace or \toappear{} to obtain this

%%%     space.)

%%% 4)  Text is 9pt on 10pt baselines; titles are 9pt bold sans-serif.

%%%     (The acmconf.sty from which acmconf.cls was derived actually uses

%%%     9pt bold roman for section titles.  Functionally, I have left this

%%%     as is.  I have added a commented out alternate defination of

%%%     \acmtitlestyle that uses sans-serif)  --DAB

%%%

%%% This document class supports a [preprint] class option that allows you

%%% to run off a copy for a preprint -- with page numbers, "to appear"

%%% information, and so forth. This is documented below.

%%% There are a few restrictions you must observe:

%%%

%%% 1)  You cannot change the font size; ACM wants you to use 9pt.

%%% 3)  You must start your paper with the \maketitle command.  Prior to the

%%%     \maketitle you must have \title and \author commands.  If you have a

%%%     \date command it will be ignored; no date appears on the paper, since

%%%     the proceedings will have a date on the front cover.

%%%     Optionally, you may have an \affiliation command with text, such

%%%     as company or university name and address, that will be centered

%%%     just below the author(s).

%%% 4)  Marginal paragraphs, tables of contents, lists of figures and tables,

%%%     and page headings are all forbidden.

%%% 5)  The `figure' environment will produce a figure one column wide; if you

%%%     want one that is two columns wide, use `figure*'.  Ditto for the

%%%     `table' and `table*' environments.

%%%

%%% Page Headings:

%%% Normally, \pagestyle commands are ignored --- pages have no headings or

%%% numbers. ACM will number the pages for you when they are inserted into the

%%% proceedings (you should put page numbers on the BACK of each page, though,

%%% in case someone drops your paper on the floor).

%%%

%%% If the [preprint] option is present, then \pagestyle commands are obeyed,

%%% and the default is \pagestyle{plain}. The [twoside] option is also

%%% useful when using headers.

%%%

%%% The [draft] and [final] options as used in the article class are also

%%% supported.

%%%

%%%

%%% Copyright Space:

%%% You leave space at the bottom of page 1/column 1 one with the

%%% \copyrightspace command.  Alternatively, you can use the

%%% \toappear{...} command.  Normally, this turns into an unnumbered

%%% footnote 4.5pc high.  If [preprint] is on, then this space is

%%% filled with the {...} text; otherwise, it's blank. You must put

%%% one of these commands in the text of page 1/column 1 *after* all the

%%% other footnotes that go on page1/column 1, of course.

%%%

%%% A typical usage looks like this:

%%%     \toappear{To appear in the Ninth AES Conference on Midevil Lithuanian

%%%               Embalming Technique, June 1991, Alfaretta, Georgia.

%%%               Also available as Technical Report CMU-CS-91-119,

%%%               Cranberry Melon School of Cucumber Science.}

%%% This will be included in the preprint, and left out of the conference

%%% version.

%%%

%%% Acmconf defines two useful conditionals.

%%% - \ifacmconf{true-stuff}{false-stuff}

%%%   expands to true-stuff.

%%% - \ifpreprint true-stuff \else else-stuff \fi

%%%   expands to true-stuff if the [preprint] option is being used,

%%%   otherwise it expands to else-stuff.

%%% \ifacmconf is a latex command; \ifpreprint is a real latex conditional.

%%%

%%% WARNING:

%%% Some dvi-ps converters heuristically allow chars to drift from their

%%% true positions a few pixels. This loses noticeably with the 9pt sans-serif

%%% bold font used for section headers. You turn this hackery off in our

%%% dvi-ps converters with the -e option:

%%%     dvips -e 0 foo.dvi >foo.ps

\NeedsTeXFormat{LaTeX2e}

\ProvidesClass{acmconf}[1994/11/27 Alternative LaTeX document class]

\typeout{Bugs to berson@cs.pitt.edu}

%

% Define the conditionals and command for the options.

%

\newif\if@acmconf\@acmconftrue

\long\def\ifacmconf#1#2{\if@acmconf#1\else#2\fi}

\newif\ifpreprint

%

% Declare and process the options

%

\DeclareOption{draft}{\PassOptionsToClass{draft}{article}}

\DeclareOption{final}{\PassOptionsToClass{final}{article}}

\DeclareOption{twocolumn}{\PassOptionsToClass{twocolumn}{article}}

\DeclareOption{twoside}{\PassOptionsToClass{twoside}{article}}

\DeclareOption{preprint}{\preprintfalse}

%\DeclareOption{preprint}{\preprinttrue}

%

% Let them off with just a warning for any other option

%

\DeclareOption*{\ClassWarningNoLine{acmconf}{Unknown option `\CurrentOption'}}

%\DeclareOption*{\ClassError{acmconf}

%   {The `\CurrentOption' option is not supported}

%   {Remove the `\CurrentOption' option from the

%    \protect\documentclass\space line.}}

\ExecuteOptions{twocolumn}

\ProcessOptions

%

% This class simply modifies a few behaviors of the article class,

% so load it now

%

\LoadClass{article}

%**********************************************************************

%

% The following commands would normally be in a file such as

% size9.clo for the article class.  Since the size isn't really an

% option, I include them here.  I have followed the order of the commands

% as found in size10.clo.

%

% I could test for the presence of % the file size9.clo and load it when

% availale, instead of executing these commands.

%

%

% Set the font sizes and spacing

%

\renewcommand\baselinestretch{1}

\renewcommand\normalsize{%

   \@setfontsize\normalsize\@ixpt\@xpt 

   \abovedisplayskip 9\p@ \@plus2\p@ \@minus4.5\p@%

   \abovedisplayshortskip  \z@ \@plus3\p@%

   \belowdisplayshortskip  5.4\p@ \@plus3\p@ \@minus3\p@%

   \belowdisplayskip \abovedisplayskip

   \let\@listi\@listI}

\normalsize

\renewcommand\small{%

   \@setfontsize\small\@viiipt{9}%

   \abovedisplayskip 7.6\p@ \@plus 3\p@ \@minus 4\p@%

   \abovedisplayshortskip \z@ \@plus2\p@%

   \belowdisplayshortskip 3.6\p@ \@plus2\p@ \@minus 2\p@

   \def\@listi{\leftmargin\leftmargini

                \topsep 4\p@ \@plus 2\p@ \@minus 2\p@

                \parsep 2\p@ \@plus 1\p@ \@minus 1\p@

                \itemsep \parsep}

   \belowdisplayskip \abovedisplayskip

}

\renewcommand\footnotesize{%

   \@setfontsize\footnotesize\@viipt{8}

   \abovedisplayskip 6.4\p@ \@plus 2\p@ \@minus 4\p@%

   \abovedisplayshortskip \z@ \@plus 1\p@%

   \belowdisplayshortskip 2.7\p@ \@plus 1\p@ \@minus 2\p@

   \def\@listi{\leftmargin\leftmargini

               \topsep 3\p@ \@plus 1\p@ \@minus 1\p@

               \parsep 2\p@ \@plus 1\p@ \@minus 1\p@

               \itemsep \parsep}%

   \belowdisplayskip \abovedisplayskip

}

\renewcommand\scriptsize{\@setfontsize\scriptsize\@viipt{8pt}}

\renewcommand\tiny{\@setfontsize\tiny\@vpt{6pt}}

\renewcommand\large{\@setfontsize\large\@xipt{13.6\p@}}

\renewcommand\Large{\@setfontsize\Large\@xiipt{14\p@}}

\renewcommand\LARGE{\@setfontsize\LARGE\@xivpt{18\p@}}

\renewcommand\huge{\@setfontsize\huge\@xviipt{22\p@}}

\renewcommand\Huge{\@setfontsize\Huge\@xxpt{25\p@}}

\setlength\parindent{13.5\p@}    % This is what normally used for one

                                 % column.  Should it be 1em for us?

\setlength\headheight{0\p@}

\setlength\headsep{0\p@}

\setlength\headheight{0\p@}

\setlength\headsep{0\p@}

\setlength\footskip{30\p@}

%

% There was no \topskip or \@maxdepth in the original acmconf.sty.

% Thus, we inherit 

%\topskip 10pt 

%\maxdepth .5\topskip

% from size10.clo loaded via article.cls

%

\setlength\textwidth{42pc}

\setlength\textheight{650\p@}

\setlength\oddsidemargin{4.5pc}

\addtolength\oddsidemargin{-1in}    % Correct for LaTeX gratuittousness

\setlength\evensidemargin{4.5pc}

\addtolength\evensidemargin{-1in}   % Correct for LaTeX gratuittousness

\setlength\marginparwidth{0\p@}     % Margin pars are not allowed.

\setlength\marginparsep{11\p@}

\setlength\marginparpush{5\p@}

\setlength\topmargin{4.5pc}

\addtolength\topmargin{-1in}         % Correct for LaTeX gratuitousness

%

% I wonder if these next three lines should only be executed if

% the preprint option is in effect?  -- DAB

%

%% Must redefine the top margin so there's room for headers and

%% page numbers if you are using the preprint option. Footers

%% are OK as is. Olin.

\addtolength\topmargin{-37\p@} % Leave 37pt above text for headers

\setlength\headheight{12\p@}

\setlength\headsep{25\p@}

\setlength\footnotesep{5.6\p@}

\setlength{\skip\footins}{8.1\p@ \@plus 4\p@ \@minus 2\p@}

\setlength\floatsep{11\p@ \@plus 2\p@ \@minus 2\p@}

\setlength\textfloatsep{18\p@ \@plus 2\p@ \@minus 4\p@}

\setlength\intextsep{11\p@ \@plus 2\p@ \@minus 2\p@}

\setlength\dblfloatsep{11\p@ \@plus 2\p@ \@minus 2\p@}

\setlength\dbltextfloatsep{18\p@ \@plus 2\p@ \@minus 4\p@}

%

% These values will be inherited from the default size10.clo file

% included when we load the base article class.  I include them

% here for completeness in case we split out the size9.clo file someday.

%   --DAB

\setlength\@fptop{0\p@ \@plus 1fil}

\setlength\@fpsep{8\p@ \@plus 2fil}

\setlength\@fpbot{0\p@ \@plus 1fil}

\setlength\@dblfptop{0\p@ \@plus 1fil}

\setlength\@dblfpsep{8\p@ \@plus 2fil}

\setlength\@dblfpbot{0\p@ \@plus 1fil}

\setlength\partopsep{2\p@ \@plus 1\p@ \@minus 1\p@}

%

% I think that all of these should be renewcommands.  I also think

% that \setlength should be used.  But, they are not in the size10.clo

% file that I am following.   --DAB

%

\renewcommand\@listI{\leftmargin\leftmargini 

                     \parsep 3.6\p@ \@plus 2\p@ \@minus 1\p@%

                     \topsep 7.2\p@ \@plus 2\p@ \@minus 4\p@%

                     \itemsep 3.6\p@ \@plus 2\p@ \@minus 1\p@}

\let\@listi\@listI

\@listi

\def\@listii {\leftmargin\leftmarginii

              \labelwidth\leftmarginii

              \advance\labelwidth-\labelsep

              \topsep 3.6\p@ \@plus 2\p@ \@minus 1\p@

              \parsep 1.8\p@ \@plus 0.9\p@ \@minus 0.9\p@

              \itemsep \parsep}

\def\@listiii{\leftmargin\leftmarginiii

              \labelwidth\leftmarginiii

              \advance\labelwidth-\labelsep

              \topsep 1.8\p@ plus 0.9\p@ minus 0.9\p@

              \parsep \z@

              \partopsep 1\p@ plus 0\p@ minus 1\p@

              \itemsep \topsep}

\def\@listiv {\leftmargin\leftmarginiv

              \labelwidth\leftmarginiv

              \advance\labelwidth-\labelsep}

\def\@listv  {\leftmargin\leftmarginv

              \labelwidth\leftmarginv

              \advance\labelwidth-\labelsep}

\def\@listvi {\leftmargin\leftmarginvi

              \labelwidth\leftmarginvi

              \advance\labelwidth-\labelsep}

%

% End of the "size9.clo" commands

%**********************************************************************

%

% here's a few things that I didn't find in either article.cls or

% size10.clo, so I left them here.  --DAB

%

\setlength\columnsep{2pc}          %    Space between columns

\setlength\columnseprule{0\p@}     %    Width of rule between columns.

\hfuzz 1pt               % Allow some variation in column width, otherwise it's

                         % too hard to typeset in narrow columns.

%**********************************************************************

%

% Now we get on with overriding things found in article.cls

%

\setlength\parindent{13.5\p@}

%

% This command is used to format section headings.  The format is the only

% thing that differs between these section commands and the ones in

% article.cls.

%

% Although the original documentation says that sans-serif is supposed to be

% used for section titles, the file as I received uses roman.  The

% commented out line implements sans-serif.  Be sure to comment out the

% \bfseries line if you switch.

%   --DAB

%

\newcommand\@acmtitlestyle{\normalsize\bfseries}

%\newcommand\@acmtitlestyle{\normalsize\sffamily}

\renewcommand\section{\@startsection {section}{1}{\z@}%

                                     {-3.5ex \@plus -1ex \@minus -.2ex}%

                                     {2.3ex \@plus .2ex}%

                                     {\@acmtitlestyle}}

\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%

                                       {-3.25ex \@plus -1ex \@minus -.2ex}%

                                       {1.5ex \@plus .2ex}%

                                       {\@acmtitlestyle}}

\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%

                                          {-3.25ex \@plus -1ex \@minus -.2ex}%

                                          {1.5ex \@plus .2ex}%

                                          {\@acmtitlestyle}}

\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}%

                                      {3.25ex \@plus 1ex \@minus .2ex}%

                                      {-1em}%

                                      {\@acmtitlestyle}}

\renewcommand\subparagraph{\@startsection{subparagraph}{4}{\parindent}%

                                         {3.25ex \@plus 1ex \@minus .2ex}%

                                         {-1em}%

                                         {\@acmtitlestyle}}

\setcounter{secnumdepth}{3}

\setlength\arraycolsep{4.5\p@}

\setlength\tabcolsep{5.4\p@}

\setlength\doublerulesep{1.8\p@}

\setlength\fboxsep{2.7\p@}

\setlength\fboxrule{.4\p@}

\def\tableofcontents{\ClassError{acmconf}%

  {\protect\tableofcontents: Tables of contents are not allowed in the `acmconf' document class}%

  {Remove the \protect\tableofcontents\space command from the file}}

\def\listoffigures{\ClassError{acmconf}%

  {\protect\listoffigures: Lists of figures are not allowed in the `acmconf' document class}%

  {Remove the \protect\listoffigures\space command from the file}}

\def\listoftables{\ClassError{acmconf}%

   {\protect\listoftables: Lists of tables are not allowed in the `acmconf' document class}%

   {Remove the \protect\listoftables\space command from the file}}

\let\l@table\l@figure

%

% Added \@makefntext definition so that the mark would not over print

% the beginning of the \thanks text.  --DAB

%

\def\maketitle{\par

 \begingroup

   \def\thefootnote{\fnsymbol{footnote}}%

   \def\@makefnmark{\hbox to 0pt{$\m@th^{\@thefnmark}$\hss}}%

   \long\def\@makefntext##1{\parindent 1em\noindent

               \hbox to1.8em{\hss$\m@th^{\@thefnmark}$}##1}%

   \if@twocolumn

     \twocolumn[\@maketitle]

     \else \newpage

     \global\@topnum\z@        % Prevents figures from going at top of page.

     \@maketitle \fi

   \thispagestyle{plain}\@thanks  % UE: Changed {empty} to {plain}

 \endgroup

 \setcounter{footnote}{0}

 \let\maketitle\relax

 \let\@maketitle\relax

 \gdef\@thanks{}\gdef\@author{}\gdef\@title{}\gdef\@affili{}\let\thanks\relax}

%

% extra declarations needed for our version of @maketitle

%

\newbox\@acmtitlebox

\gdef\affili{}

\def\affiliation#1{\gdef\affili{#1}}

%

% The modified @maketitle

%

\def\@maketitle{\newpage

 \null

 \setbox\@acmtitlebox\vbox{%

   \vskip 2em                 % Vertical space above title.

   \begin{center}

    {\LARGE \@title \par}     % Title set in \LARGE size.

    \vskip 1.5em                % Vertical space after title.

    {\large                        % each author set in \large, in a

     \lineskip .5em           % tabular environment

     \begin{tabular}[t]{c}\@author

     \end{tabular}\par}

     \vskip 1em

     \begin{center}

       {\large \affili}

     \end{center}

     \vskip 1.5em              % Vertical space after author.

   \end{center}}

 \dimen0=\ht\@acmtitlebox

 \advance\dimen0 by -13.5pc\relax

 \unvbox\@acmtitlebox

 \ifdim\dimen0<0.0pt\relax\vskip-\dimen0\fi}

\long\def\unmarkedfootnote#1{{\long\def\@makefntext##1{##1}\footnotetext{#1}}}

%% Use one of \copyrightspace or \toappear{To appear in the ACM ...}

\def\copyrightspace{\unmarkedfootnote{\vrule height 4.5pc

                                             width  0in depth 0in}}

%% \small is bigger than \footnotesize.

\def\toappear#1%

    {\ifpreprint \unmarkedfootnote{\vrule height 2.25pc%

                                          depth  2.25pc width 0in%

                                   \parbox{2.8in}{\small #1}}%

     \else \copyrightspace \fi}

%\def\marginpar{\ClassError{acmconf}%

%   {The \protect\marginpar command is not allowed in the `acmconf' document class}%

%   {Remove the \protect\marginpar\space command from the file}}

\mark{{}{}}   % Initializes TeX's marks

%% Headings are ignored unless the [preprint] option is in force.

\ifpreprint\else % preprint off -- all \pagestyle commands ==> \pagestyle{empty}.

%  \let\ps@plain\ps@empty  % UE: Commented this line out

  \let\ps@headings\ps@empty

  \let\ps@myheadings\ps@empty

\fi

\raggedbottom               % Ragged bottom

\endinput

%%

%% End of file `acmconf.cls'.