% \iffalse
%
% Copyright 2016, Association for Computing Machinery
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3 of this license or (at your option) any
% later version.
% The latest version of the license is in
%    http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of
% LaTeX version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Boris Veytsman,
% <borisv@lk.net>
%
% This work consists of the file acmart.dtx and the
% derived file acmart.cls, and
%
% \fi
%
%
%% \CharacterTable
%%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%%   Digits        \0\1\2\3\4\5\6\7\8\9
%%   Exclamation   \!     Double quote  \"     Hash (number) \#
%%   Dollar        \$     Percent       \%     Ampersand     \&
%%   Acute accent  \'     Left paren    \(     Right paren   \)
%%   Asterisk      \*     Plus          \+     Comma         \,
%%   Minus         \-     Point         \.     Solidus       \/
%%   Colon         \:     Semicolon     \;     Less than     \<
%%   Equals        \=     Greater than  \>     Question mark \?
%%   Commercial at \@     Left bracket  \[     Backslash     \\
%%   Right bracket \]     Circumflex    \^     Underscore    \_
%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%%   Right brace   \}     Tilde         \~}
%
%
% \MakeShortVerb{|}
% \GetFileInfo{acmart.dtx}
% \newcommand{\progname}[1]{\textsf{#1}}
% \title{\LaTeX{} Class for \emph{Association for Computing
% Machinery}\thanks{\copyright 2016, Association for Computing Machinery}}
% \author{Boris Veytsman\thanks{%
% \href{mailto:borisv@lk.net}{\texttt{borisv@lk.net}},
% \href{mailto:boris@varphi.com}{\texttt{boris@varphi.com}}}}
% \date{\filedate, \fileversion}
% \maketitle
% \begin{abstract}
%   This package provides a class for typesetting publications of
%   Association for Computing Machinery.
% \end{abstract}
% \tableofcontents
%
% \clearpage
%
%\section{Introduction}
%\label{sec:intro}
%
% Association for Computing Machinery is the world's largest
% educational and scientific computing society, which delivers
% resources that advance computing as a science and a
% profession\footnote{\url{http://www.acm.org/}}.  It was one of the
% earily adopters of \TeX\ for its typesetting.
%
% It provided several different classes for a number of journal and
% conference proceedings.  Unfortunately during the years since these
% classes were written, the code was patched many times, and the
% support of the different versions of the classes became difficult.
%
% This package provides the uniform interface for all ACM
% publications.  It is intended to replace all different classes and
% packages and provide an up to date \LaTeX\ package.
%
% The package uses only free \TeX\ packages and fonts included in \TeX
% Live, Mik\TeX\ and other popular \TeX\ distributions.  It is
% intended to be published in these distributions itself, which
% minimizes users' efforts in the installation and support of the
% package.
%
%  I am grateful to
%  Matthew Fluet, 
%  John Owens,
%  Craig Rodkin,
%  Bernard Rous,
%  David Shamma,
%  Stephen Spencer
%  and many others for their invaluable help.
%
% The development version of the package is available at
% \url{https://github.com/borisveytsman/acmart}. 
%
%\section{User's guide}
%\label{sec:ug}
%
%
%\subsection{Installation}
%\label{sec:ug_install}
%
% Most probably, you already have this package installed in your
% favorite \TeX\ distribution;  if not, you may want to upgrade.  You
% may need to upgrade it anyway since the package uses a number
% relatively recent packages, especially the ones related to the
% fonts.
%
% If you decide to install the package yourself, follow the standard
% rules:
% \begin{enumerate}
% \item Run \progname{latex} on |acmart.ins|.  This will produce the file
% |acmart.cls|.
% \item Put the file |acmart.cls| and the bibligoraphy files |*.bst|
%   to the places where \LaTeX{} can find them (see \cite{TeXFAQ} or
%   the documentation for your \TeX{} system).\label{item:install}
% \item Update the database of file names.  Again, see \cite{TeXFAQ}
% or the documentation for your \TeX{} system for the system-specific
% details.\label{item:update}
% \item The file |acmart.pdf| provides the documentation for the
% package (this is the file you are probably reading now).
% \end{enumerate}
% As an alternative to items~\ref{item:install} and~\ref{item:update}
% you can just put the files in the working directory where your
% |.tex| file is.
%
%
% The class uses a number of other packages.  They are included in all
% major \TeX\ distributions (\TeX Live, Mac\TeX, Mik\TeX) of 2015 and
% later, so you probably have them installed.  Just in case here is
% the list of these packages:
% \begin{itemize}
% \item \textsl{algorithm2e}, \url{http://www.ctan.org/pkg/algorithm2e}
% \item \textsl{amscls}, \url{http://www.ctan.org/pkg/amscls}
% \item \textsl{amsfonts}, \url{http://www.ctan.org/pkg/amsfonts}
% \item \textsl{amsmath}, \url{http://www.ctan.org/pkg/amsmath}
% \item \textsl{booktabs}, \url{http://www.ctan.org/pkg/booktabs}
% \item \textsl{caption}, \url{http://www.ctan.org/pkg/caption}
% \item \textsl{comment}, \url{http://www.ctan.org/pkg/comment}
% \item \textsl{environ}, \url{http://www.ctan.org/pkg/environ}
% \item \textsl{fancyhdr}, \url{http://www.ctan.org/pkg/fancyhdr}
% \item \textsl{float}, \url{http://www.ctan.org/pkg/float}
% \item \textsl{fontaxes}, \url{http://www.ctan.org/pkg/fontaxes}
% \item \textsl{geometry}, \url{http://www.ctan.org/pkg/geometry}
% \item \textsl{graphics}, \url{http://www.ctan.org/pkg/graphics}
% \item \textsl{hyperref}, \url{http://www.ctan.org/pkg/hyperref}
% \item \textsl{ifluatex}, \url{http://www.ctan.org/pkg/ifluatex}
% \item \textsl{ifxetex}, \url{http://www.ctan.org/pkg/ifxetex}
% \item \textsl{inconsolata}, \url{http://www.ctan.org/pkg/inconsolata}
% \item \textsl{kastrup}, \url{http://www.ctan.org/pkg/kastrup}
% \item \textsl{libertine}, \url{http://www.ctan.org/pkg/libertine}
% \item \textsl{manyfoot}, \url{http://www.ctan.org/pkg/manyfoot}
% \item \textsl{microtype}, \url{http://www.ctan.org/pkg/microtype}
% \item \textsl{mptopdf}, \url{http://www.ctan.org/pkg/mptopdf}
% \item \textsl{ms}, \url{http://www.ctan.org/pkg/ms}
% \item \textsl{mweights}, \url{http://www.ctan.org/pkg/mweights}
% \item \textsl{natbib}, \url{http://www.ctan.org/pkg/natbib}
% \item \textsl{nccfoots}, \url{http://www.ctan.org/pkg/nccfoots}
% \item \textsl{newtx}, \url{http://www.ctan.org/pkg/newtx}
% \item \textsl{oberdiek}, \url{http://www.ctan.org/pkg/oberdiek}
% \item \textsl{pdftex-def}, \url{http://www.ctan.org/pkg/pdftex-def}
% \item \textsl{relsize}, \url{http://www.ctan.org/pkg/relsize}
% \item \textsl{setspace}, \url{http://www.ctan.org/pkg/setspace}
% \item \textsl{tools}, \url{http://www.ctan.org/pkg/tools}
% \item \textsl{totpages}, \url{http://www.ctan.org/pkg/totpages}
% \item \textsl{trimspaces}, \url{http://www.ctan.org/pkg/trimspaces}
% \item \textsl{upquote}, \url{http://www.ctan.org/pkg/upquote}
% \item \textsl{url}, \url{http://www.ctan.org/pkg/url}
% \item \textsl{xcolor}, \url{http://www.ctan.org/pkg/xcolor}
% \item \textsl{xkeyval}, \url{http://www.ctan.org/pkg/xkeyval}
% \end{itemize}
% 
%
%\subsection{Invocation and options}
%\label{sec:invocation}
%
% To use the class put in the premable of your document
% \begin{quote}
%   \cs{documentclass}\oarg{options}|{acmart}|
% \end{quote}
% There are several options corresponding to the type of the document and
% its general appearance.  They are described below.  Generally
% speaking, the options have |key=value| forms, for example
% \begin{verbatim}
% \documentclass[format=acmsmall, screen=true, review=false]{acmart}
% \end{verbatim}
%
%
% The option |format| describes the format of the output.  There are
% several possible values for this option, for example,
% \begin{verbatim}
%   \documentclass[format=acmtog]{acmart}
% \end{verbatim}
% Actually the words |format=| can be omitted, e.g.,
% \begin{verbatim}
%   \documentclass[acmtog, review=false]{acmart}
% \end{verbatim}
% The possible formats are listed in
% Table~\ref{tab:opts_format}.  Note that formats starting with |acm|
% are intended for journals and transactions, while formats starting
% with |sig| are intended for proceedings published as books.
%
% \begin{table}
%   \centering
%   \caption{The possible values for the \texttt{format} option}
%   \label{tab:opts_format}
%   \begin{tabularx}{\textwidth}{>{\ttfamily}lX}
%     \toprule
%     \normalfont Value & Meaning\\
%     \midrule
%     manuscript  & A manuscript. This is the default \\
%   acmsmall & Small single column format, used for CIE, CSUR, JACM, JDIQ, JEA, JERIC,
%            JETC, TAAS, TACCESS, TACO, TALG, TALLIP (formerly TALIP), TCPS,
%            TEAC, TECS, TIIS, TISSEC, TIST, TKDD, TMIS, TOCE, TOCHI, TOCL,
%            TOCS, TOCT, TODAES, TODS, TOIS, TOIT, TOMACS, TOMM (formerly
%            TOMCCAP), TOMPECS, TOMS, TOPC, TOPLAS, TOPS,
%            TOS, TOSEM, TOSN, TRETS,
%            TSAS, TSC, TSLP, TWEB\@. \\
%           acmlarge  & Large single column format, used for
%          JOCCH, TAP \\
%            acmtog   & Large double column format, used for
%          TOG\\
%           sigconf & Proceedings format for most of ACM
%          conferences (with the exceptions listed below)\\
%           siggraph & Proceedings format for SIGGRAPH and SIGGRAPH
%          Asia conferences, published in ACM Transactions on Graphics
%          journal issues \\
%            sigplan & Proceedings format for SIGPLAN conferences\\
%            sigchi  & Proceedings format for SIGCHI conferences\\
%           sigchi-a & Format for SIGCHI extended abstract\\
%   \bottomrule
%   \end{tabularx}
% \end{table}
%
% There are several Boolean options which can take |true| or |false|
% values.  They are listed in Table~\ref{tab:opts_bool}.  The words
% |=true| can be omitted when setting the Boolean option, so instead of
% |screen=true| one can write just |screen|, for example,
% \begin{verbatim}
% \documentcalss[acmsmall, screen, review]{acmart}
% \end{verbatim}
% The option
% |review| is useful when combined with the |manuscript| format
% option: it provides a version suitable for reviewers and
% copyeditors.  
%
% The option |screen| may in the future involve
% additional features  suitable for on-screen versions of the
% articles.  
% 
% The option |natbib| is used when the corresponding
% \BibTeX\ style is based on |natbib|.  
%
% The option |anonymous| is used
% for anonymous review process: all author information becomes
% obscured.  
%
% \begin{table}
%   \centering
%   \caption{Boolean options}
%   \label{tab:opts_bool}
%   \begin{tabularx}{\textwidth}{>{\ttfamily}l>{\ttfamily}lX}
%     \toprule
%     \normalfont Option & \normalfont Default & Meaning\\
%     \midrule
%     review & false & A review version: lines are numbered,
%     hyperlinks are colored\\
%     screen & false & A screen version: hyperlinks are colored\\
%     natbib & false & Whether to use |natbib| package (see
%     Section~\ref{sec:ug_bibliography})\\
%     anonymous & false & Whether to make author(s) anonymous\\
%     authorversion & false & Whether to generate a special
%     version for authors' personal use or posting (see
%     Section~\ref{sec:ug_topmatter})\\ 
%     \bottomrule
%   \end{tabularx}
% \end{table}
%
%
%
%\subsection{Topmatter commands}
%\label{sec:ug_topmatter}
%
% A number of commands set up \emph{top matter} information, or, in
% the computer science jargon, \emph{metadata} for the article.  They
% establish the publication name, article title, authors, doi and
% other data.  Some of these commands, like \cs{title} or \cs{author},
% should be put by the authors.  Others, like \cs{acmVolume} or
% \cs{acmDOI}---by the editors.  Below we describe these commands and
% mention who should issue them.  These macros should be used
% \emph{before} the \cs{maketitle} command.  Note that in the previous
% versions of ACM classes some of these commands should be used before
% \cs{maketitle}, and some after it. Now they all must be used before
% \cs{maketitle}.
%
%
% The class internally loads |amsart| class, so many top matter
% commands are inherited from |amsart|~\cite{Downes04:amsart}.
%
% \DescribeMacro{\acmJournal}%
% The macro \cs{acmJournal}\marg{shortName} sets the name of the
% journal or transaction for journals and transactions.  The argument
% is the short name of the publication \emph{in uppercase}, for
% example,
% \begin{verbatim}
% \acmJournal{TOMS}
% \end{verbatim}
% The currently recognized journals are listed in
% Table~\ref{tab:pubs}.  Note that conference proceedings published in
% \emph{book} form do not set this macro.
%
% \begin{table}
%   \centering
%   \caption{ACM publications and arguments of the \cs{acmJournal}
%   command}\footnotesize
%   \label{tab:pubs}
%   \begin{tabularx}{\textwidth}{>{\ttfamily}lX}
%     \toprule
%     \normalfont Abbreviation & Publication \\
%     \midrule
%     CIE & ACM Computers in Entertainment \\
%     CSUR & ACM Computing Surveys\\
%     JACM &  Journal of the ACM \\
%     JDIQ & ACM Journal of Data and Information Quality \\
%     JEA & ACM Journal of Experimental Algorithmics \\
%     JERIC & ACM Journal of Educational Resources in Computing\\
%     JETC & ACM Journal on Emerging Technologies in Computing Systems \\
%     JOCCH & ACM Journal on Computing and Cultural Heritage \\
%     TAAS & ACM Transactions on Autonomous and Adaptive Systems\\
%     TACCESS & ACM Transactions on Accessible Computing\\
%     TACO & ACM Transactions on Architecture and Code Optimization \\
%     TALG & ACM Transactions on Algorithms \\
%     TALLIP & ACM Transactions on Asian and Low-Resource Language
%     Information Processing\\
%     TAP & ACM Transactions on Applied Perception \\
%     TCPS & ACM Transactions on Cyber-Physical Systems\\
%     TEAC & ACM Transactions on Economics and Computation\\
%     TECS & ACM Transactions on Embedded Computing Systems \\
%     TIIS & ACM Transactions on Interactive Intelligent Systems\\
%     TISSEC & ACM Transactions on Information and System Security\\
%     TIST & ACM Transactions on Intelligent Systems and Technology \\
%     TKDD & ACM Transactions on Knowledge Discovery from Data\\
%     TMIS & ACM Transactions on Management Information Systems\\
%     TOCE & ACM Transactions on Computing Education\\
%     TOCHI & ACM Transactions on Computer-Human Interaction\\
%     TOCL & ACM Transactions on Computational Logic\\
%     TOCS & ACM Transactions on Computer Systems  \\
%     TOCT & ACM Transactions on Computation Theory  \\
%     TODAES & ACM Transactions on Design Automation of Electronic Systems\\
%     TODS & ACM Transactions on Database Systems\\
%     TOG & ACM Transactions on Graphics\\
%     TOIS & ACM Transactions on Information Systems\\
%     TOIT & ACM Transactions on Internet Technology\\
%     TOMACS & ACM Transactions on Modeling and Computer Simulation \\
%     TOMM  & ACM Transactions on Multimedia Computing, Communications
%     and Applications \\
%     TOMPECS & ACM Transactions on Modeling and Performance Evaluation
%     of Computing Systems\\
%     TOMS & ACM Transactions on Mathematical Software\\
%     TOPC & ACM Transactions on Parallel Computing\\
%     TOPLAS & ACM Transactions on Programming Languages and Systems\\
%     TOPS & ACM Transactions on Privacy and Security\\
%     TOS & ACM Transactions on Storage\\
%     TOSEM & ACM Transactions on Software Engineering and Methodology\\
%     TOSN & ACM Transactions on Sensor Networks\\
%     TRETS & ACM Transactions on Reconfigurable Technology and Systems\\
%     TSAS & ACM Transactions on Spatial Algorithms and Systems\\
%     TSC & ACM Transactions on Social Computing\\
%     TSLP & ACM Transactions on Speech and Language Processing \\
%     TWEB & ACM Transactions on the Web\\
%   \bottomrule
%   \end{tabularx}
% \end{table}
%
% It is expected that this command is inserted by the author of the
% manuscript when she decides to which journal to submit the
% manuscript.
%
% \DescribeMacro{\acmConference}%
% The macro
% \cs{acmConference}\oarg{short name}\marg{name}\marg{date}\marg{venue} is
% used for conference proceedings published in the book form.  The
% arguments are the following:
% \begin{description}
% \item[short name:] the abbreviated name of the conference (optional).
% \item[name:] the name of the conference \emph{or} the name of the
% book as set by the editor.
% \item[date:] the date(s) of the conference.
% \item[venue:] the place of the conference.
% \end{description}
% Examples:
% \begin{verbatim}
% \acmConference[TD'15]{Technical Data Conference}{November
% 12--16}{Dallas, TX, USA}
% \acmConference{SA'15 Art Papers}{November 02--06, 2015}{Kobe, Japan}
% \end{verbatim}
%
%
% Normally this command is entered either by the editor or by the typesetter.
%
% \DescribeMacro{\title}
% The command |\title|, as in \progname{amsart} class, has two arguments:  one
% optional, and one mandatory:
% \begin{flushleft}
%   |\title[|\meta{ShortTitle}|]{|\meta{FullTitle}|}|
% \end{flushleft}
% The mandatory argument is the full title of the article.  The
% optional argument, if present, defines the shorter version of the
% title for running heads.  If the optional argument is absent, the
% full title is used instead.
%
% It is expected that this command is inserted by the author of the
% manuscript.
%
% \DescribeMacro{\subtitle}%
% Besides title, ACM classes allow subtitle, set with the
% \cs{subtitle}\marg{subtitle} macro.
%
% \DescribeMacro{\author}%
% \DescribeMacro{\affiliation}%
% \DescribeMacro{\email}%
% The interface for specifying the authors and their affiliations is
% close the the one of \progname{amsart}~\cite{instr-l} (and different
% from the standard \LaTeX).  For each author a separate command
% |\author| should be used, followed by |\affliation| and |\email|.
% If several authors share affiliations, in journal formats like
% |acmsmall| or |acmlarge| one may put the
% affiliation after all these authors, for example:
% \begin{verbatim}
% \author{A. U. Thor}
% \email{author@nsw.au.edu}
% \affiliation{University of New South Wales}
% \author{A. N. Other}
% \author{C. O. Respondent}
% \affiliation{University of Pennsylvania}
% \end{verbatim}
% In the cases of overlapping affiliations it is advisable to repeat
% the full list, for example,
% \begin{verbatim}
% \author{A. U. Thor}
% \affiliation{University of New South Wales, Australia}
% \email{author@nsw.edu.au}
% \author{A. N. Other}
% \affiliation{University of Pennsylvania, USA and University of New South
% Wales, Australia}
% \email{other@upenn.edu}
% \end{verbatim}
% For \emph{conferences} the affiliations should \emph{always} be
% repeated, even if they are shared between the authors.
%
% Note that old ACM conference formats did not allow for more than six
% authors and required some efforts from the authors to achieve
% alignment.  The new format is much better in this.
%
%
%
% It is expected that these commands are inserted by the author of the
% manuscript.
%
% \DescribeMacro{\thanks}
% Like \progname{amsart} (and unlike standard \LaTeX{}),
% we allow |\thanks| only \emph{outside} of
% commands |\title| and |\author|.  Example:
% \begin{verbatim}
% \thanks{This work is supported by the Widget Corporation Grant
% \#312-001.\\
% Author's address: D. Pineo, Kingsbury Hall, 33 Academic Way, Durham,
% N.H. 03824; email: dspineo@comcast.net; Colin Ware, Jere A. Chase
% Ocean Engineering Lab, 24 Colovos Road, Durham, NH 03824; email:
% cware@ccom.unh.edu;
% Sean Fogarty, (Current address) NASA Ames Research Center, Moffett
% Field, California 94035.}
% \end{verbatim}
%
% It is expected that this command is inserted by the author of the
% manuscript.
%
% \DescribeMacro{\titlenote}%
% \DescribeMacro{\subtitlenote}%
% \DescribeMacro{\authornote}%
% While the command \cs{thanks} generates a note without footnote
% mark, sometimes the authors might need notes more tightly connected
% to the title, subtitle or author.  The commands \cs{titlenote},
% \cs{subtitlenote} and \cs{authornote} that follow the corresponding
% commands (\cs{title}, \cs{subtitle} and \cs{author}) generate such
% notes, for example
% \begin{verbatim}
% \title{This is a title}
% \titlenote{This is a titlenote}
% \author{A. U. Thor}
% \authornote{This is an authornote}
% \end{verbatim}
%
%
% \DescribeMacro{\acmVolume}%
% \DescribeMacro{\acmNumber}%
% \DescribeMacro{\acmArticle}%
% \DescribeMacro{\acmYear}%
% \DescribeMacro{\acmMonth}%
% The macros \cs{acmVolume}, \cs{acmNumber}, \cs{acmArticle},
% \cs{acmYear} and \cs{acmMonth} are inserted by the editor and set
% the journal volume, issue, article number, year and month
% corrspondingly.  The arguments of all these commands, including
% \cs{acmMonth} is numerical, including \cs{acmMonth}, for example,
% \begin{verbatim}
% \acmVolume{9}
% \acmNumber{4}
% \acmArticle{39}
% \acmYear{2010}
% \acmMonth{3}
% \end{verbatim}
%
% \DescribeMacro{\acmArticleSeq}%
% The articles in the same issue of a journal have \emph{sequential
% number}.  It is used to position black blob in same formats.  By
% default it is the same as article number, but the command
% \cs{acmArticleSeq}\marg{n} can be used to change it:
% \begin{verbatim}
% \acmArticle{39}   % The sequence number will be 39 by default
% \acmArticleSeq{5} % We rededine it to 5
% \end{verbatim}
%
%
%
% \DescribeMacro{\acmPrice}%
% The macro \cs{acmPrice}\marg{price} sets the price for the article
% (by default 15.00), for example,
% \begin{verbatim}
% \acmPrice{25.00}
% \end{verbatim}
%
%
% \DescribeMacro{\acmISBN}%
% Book-like volumes have ISBN numbers attached to them.  The macro
% \cs{acmISBN}\marg{ISBN} sets it.  Normally it is set by the
% typesetter, for example,
% \begin{verbatim}
% \acmISBN{978-1-4503-3916-2}
% \end{verbatim}
%
%
% \DescribeMacro{\acmDOI}%
% The macro \cs{acmDOI}\marg{DOI} sets the DOI number of the article, for
% example,
% \begin{verbatim}
% \acmDOI{10.1145/9999997.9999999}
% \end{verbatim}
% It is normally set by the typesetter.
%
%
% \DescribeMacro{\acmBadgeR}%
% \DescribeMacro{\acmBadgeL}%
% Some conference articles get special distinction, for example, the
% artifact evaluation for PPoPP~2016
% (see~\url{http://ctuning.org/ae/ppopp2016.html}).  These articles
% display special badges supplied by the conference organizers.  The
% class provides commands to add these badges:
% \cs{acmBadgeR}\oarg{url}\marg{graphics} and 
% \cs{acmBadgeL}\oarg{url}\marg{graphics}.  The first command puts the
% badge to the right of the title, and the second one---to the left.
% The exception is the |sigchi-a| mode for SIGCHI Extended abstract,
% which puts the badges on the left margin.  The argument have the
% following meaning: \oarg{url}, if provided, sets the link to the
% badge authority in the screen version, while \marg{graphics} sets
% the graphics file with the badge image.  The file must be a cropped
% square, which is scaled to a standard size in the output.  For
% example, if the badge image is |ae-logo.pdf|, the command is
% \begin{verbatim}
% \acmBadgeR[http://ctuning.org/ae/ppopp2016.html]{ae-logo}
% \end{verbatim}
% 
%
%
% \DescribeMacro{\startPage}%
% The macro \cs{startPage}\marg{page} sets the first page of the
% article in the journal or book.  It is used by the typesetter.
%
%
% \DescribeMacro{\terms}%
% \DescribeMacro{\keywords}%
% The macros \cs{terms}\marg{term, term,\ldots} and
% \cs{keywords}\marg{keyword, keyword,\ldots} set the main terms and
% the additional keywords for the article.  Term and keywords must be
% separated by commas, for example,
% \begin{verbatim}
% \terms{wireless, interference}
% \keywords{wireless sensor networks, media access control,
% multi-channel, radio interference, time synchronization}
% \end{verbatim}
%
% \DescribeEnv{CCSXML}%
% \DescribeMacro{\ccsdesc}%
% ACM publications are classified according to the ACM Computing
% Classification Scheme (CCS).  CCS codes are used both in the typeset
% version of the publications \emph{and}  in the metadata in the various
% databases.  Therefore you need to provide both \TeX\ commands and XML
% metadata with the paper.
%
% The tool at \url{http://dl.acm.org/ccs.cfm} can be used to generate
% CCS codes.  After you select the topics, click on ``Generate CCS
% codes'' to get the result like the following:
% \begin{verbatim}
% \begin{CCSXML}
% <ccs2012>
%  <concept>
%   <concept_id>10010520.10010553.10010562</concept_id>
%   <concept_desc>Computer systems organization~Embedded systems</concept_desc>
%   <concept_significance>500</concept_significance>
%  </concept>
%  <concept>
%   <concept_id>10010520.10010575.10010755</concept_id>
%   <concept_desc>Computer systems organization~Redundancy</concept_desc>
%   <concept_significance>300</concept_significance>
%  </concept>
%  <concept>
%   <concept_id>10010520.10010553.10010554</concept_id>
%   <concept_desc>Computer systems organization~Robotics</concept_desc>
%   <concept_significance>100</concept_significance>
%  </concept>
%  <concept>
%   <concept_id>10003033.10003083.10003095</concept_id>
%   <concept_desc>Networks~Network reliability</concept_desc>
%   <concept_significance>100</concept_significance>
%  </concept>
% </ccs2012>
% \end{CCSXML}
%
% \ccsdesc[500]{Computer systems organization~Embedded systems}
% \ccsdesc[300]{Computer systems organization~Redundancy}
% \ccsdesc{Computer systems organization~Robotics}
% \ccsdesc[100]{Networks~Network reliability}
% \end{verbatim}
%
% You need to just copy this code and paste it in your paper anywhere
% before \verb|\maketitle|.
%
% \DescribeMacro{\setcopyright}
% There are several possibilities for the copyright of the papers
% published by ACM: the authors may transfer the rights to ACM, license
% them to ACM, some or all authors might be employees of the US or
% Canada Government, etc.  Accordingly the command
% \verb|\setcopyright{...}| is introduced.  Its argument is the
% copyright status of the paper, for example,
% \verb|\setcopyright{acmcopyright}|.  The possible values for this
% command are listed in Table~\ref{tab:setcopyright}.
%
% \begin{table}
%   \centering
%   \caption{Parameters for \texttt{\textbackslash setcopyright} command}
%   \label{tab:setcopyright}
%   \begin{tabularx}{\textwidth}{lX}
%     \toprule
%     Parameter & Meaning\\
%     \midrule
%     \texttt{none} & The copyright and permission information is not
%     typeset (this is the option for some ACM conferences). \\
%     \texttt{acmcopyright} & The authors transfer the copyright to ACM
%     (the ``traditional''   choice).\\
%     \texttt{acmlicensed} &  The authors retain the copyright but
%     license the publication rights  to ACM\@.  \\
%     \texttt{rightsretained} & The authors retain the copyright and
%     publication rights to  themselves or somebody else.  \\
%     \texttt{usgov} & All the authors are employees of the US
%     Government. \\
%     \texttt{usgovmixed} & Some  authors are employees of the US
%     Government. \\
%     \texttt{cagov} & All the authors are employees of the Canadian
%     Government. \\
%     \texttt{cagovmixed} & Some  authors are employees of the Canadian
%     Government. \\
%     \bottomrule
%   \end{tabularx}
% \end{table}
% The ACM submission software should generate the right command for you
% to paste into your file.
%
%
% \DescribeMacro{\copyrightyear}%
% Each copyright statement must have the year of copyright.  By
% default it is the same as \cs{acmYear}, but you can override this
% decision using the macro \cs{copyrightyear}, e.g.,
% \begin{verbatim}
% \acmYear{2016}
% \copyrightyear{2015}
% \end{verbatim}
%
% There is a special case for a personal copy that the authors may be
% allowed to generate for their use or a posting on a personal site
% (check the instructions for the specific journal or conference for
% the details).  The document option |authorversion=true| produces the
% special form of the copyright statement for this case.  Note that
% you still need the \cs{setcopyright} command and (optionally)
% \cs{copyrightyear} command to tell \TeX\ about the copyright owner and
% year.  Also, you should be aware that due to the different sizes of
% the permssion blocks for the printed version and authors' version
% the page breaks might be different between them.
%
% \DescribeEnv{abstract}%
% The environment |abstract| must \emph{precede} \cs{maketitle}
% command.  Again, this is different from the standard \LaTeX.
%
%
% \DescribeEnv{teaserfigure}%
% A special kind of figure is used for many two-column conference
% proceedings.  This figure is placed just after the authors, but
% before the main text.  The environment |teaserfigure| is used for these
% figures.  This environment must be used \emph{before}
% \cs{maketitle}, for example,
% \begin{verbatim}
% \begin{teaserfigure}
%   \includegraphics[width=\textwidth]{sampleteaser}
%   \caption{This is a teaser}
%   \label{fig:teaser}
% \end{teaserfigure}
% \end{verbatim}
%
%
% \DescribeMacro{\settopmatter}%
% Some information in the top matter is printed for certain journals
% or proceedings and suppressed for others.  You may override these
% defaults using the command \cs{settopmatter}\marg{settings}.  The
% settings and their meanings are listed in
% Table~\ref{tab:settopmatter}.  For example,
% \begin{verbatim}
% \settopmatter{printbib=false, printccs=true}
% \end{verbatim}
%
%
% \begin{table}
%   \centering
%   \caption{Settings for \cs{settopmatter} command}
%   \label{tab:settopmatter}
%   \begin{tabularx}{\textwidth}{llX}
%     \toprule
%     Parameter & Values & Meaning\\
%     \midrule
%     printccs & true/false & Whether to print CCS categories\\
%     printbib & true/false & Whether to print ACM bibliographic
%     entry\\
%     \bottomrule
%   \end{tabularx}
% \end{table}
%
%
% \DescribeMacro{\received}%
% The command \cs{received}\oarg{stage}\marg{date} sets the history of
% the publication.  The \oarg{stage} argument is optional; the default
% is |Received| for the first date and |revised| for the subsequent
% ones.  For example
% \begin{verbatim}
% \received{February 2007}
% \received[revised]{March 2009}
% \received[accepted]{June 2009}
% \end{verbatim}
%
%
% \DescribeMacro{\maketitle}%
% The macro \cs{maketitle} must be the last command in the top matter
% group:  i.e., it must follow the commands defined in this section.
%
%
% \DescribeMacro{\shortauthors}%
% \emph{After} the command \cs{maketitle} the macro \cs{shortauthors}
% stores the names of the authors for the running head.  You may
% redefine it if the list of author's name is too long, e.g.,
% \begin{verbatim}
% \maketitle
% \renewcommand{\shortauthors}{Zhou et. al.}
% \end{verbatim}
%
%
%\subsection{Algorithms}
%\label{sec:ug_algorithms}
%
% There now several good packages for typesetting
% algorithms~\cite{Fiorio15, Brito09, Heinz15}, and the authors are
% now free to choose their favorite one.
%
%
%
%\subsection{Figures and tables}
%\label{sec:ug_floats}
%
% New ACM styles use the standard \LaTeX\ interface for figures and
% tables.  There are some important items to be aware of, however.
%
% \begin{enumerate}
% \item The captions for figures must be entered \emph{after} the
% figure bodies, and for the tables \emph{before} the table bodies.
% \item ACM uses the standard types for figures and types and adds
% several new ones.  In total there are follwing types:
% \begin{description}
% \item[figure, table:] a standard figure or table, taking full text
% width in one-column formats and one column in two-column formats.
% \item[figure*, table*] in two-column formats, a special figure or
% table taking full text width.
% \item[teaserfigure:] a special figure before \cs{maketitle}.
% \item[sidebar, marginfigure, margintable:] in the |sigchi-a| format,
%   special sidebars, tables and figures on the margin.
% \end{description}
%
% \item Accordingly, when scaling the images, one should use the
% following sizes:
% \begin{enumerate}
% \item For |figure| in one-column mode, |figure*| in two-column mode
%   or |teaserfigure|---\cs{textwidth} (in the one-column you can also
%   use \cs{columnwidth}, which coincides with \cs{textwidth} in this
%   case).
% \item For |figure| in two-column mode---\cs{columnwidth}.
% \item For |marginfigure|--\cs{marginparwidth}.
% \item For |figure*| in SIGCHI Extended
% abstracts---\cs{fulltextwidth}.
% \end{enumerate}
%
% \end{enumerate}
%
% It is strongly recommended to use the package booktabs~\cite{Fear05}
% and follow its main principles of typography with respect to tables:
% \begin{enumerate}
% \item Never, ever use vertical rules.
% \item Never use double rules.
% \end{enumerate}
% It is also a good idea not to overuse horizontal rules.
%
% For table \emph{footnotes} you have several options described in TeX
% FAQ~\cite{TeXFAQ}. The simplest one is to use \cs{minipage}
% environment:
% \begin{verbatim}
% \begin{table}
% \caption{Simulation Configuration}
% \label{tab:conf}
% \begin{minipage}{\columnwidth}
% \begin{center}
% \begin{tabular}{ll}
%   \toprule
%   TERRAIN\footnote{This is a table footnote. This is a
%     table footnote. This is a table footnote.}   &
%     (200\,m$\times$200\,m) Square\\
%   Node Number     & 289\\
%   Node Placement  & Uniform\\
%   Application     & Many-to-Many/Gossip CBR Streams\\
%   Payload Size    & 32 bytes\\
%   Routing Layer   & GF\\
%   MAC Layer       & CSMA/MMSN\\
%   Radio Layer     & RADIO-ACCNOISE\\
%   Radio Bandwidth & 250Kbps\\
%   Radio Range     & 20m--45m\\
%   \bottomrule
% \end{tabular}
% \end{center}
% \bigskip
% \footnotesize\emph{Source:} This is a table
%  sourcenote. This is a table sourcenote. This is a table
%  sourcenote.
%
%  \emph{Note:} This is a table footnote.
% \end{minipage}
% \end{table}
% \end{verbatim}
%
% \DescribeEnv{sidebar}%
% \DescribeEnv{marginfigure}%
% \DescribeEnv{margintable}%
% SIGCHI extended abstract extensively uses margin space.  The package
% provides three environments for this with option captions:
% \begin{description}
% \item[sidebar:] textual information on the margin
% \item[marginfigure:] a figure on the margin
% \item[margintable:] a table on the margin
% \end{description}
%
%
%\subsection{Theorems}
%\label{sec:ug_theorems}
%
% ACM classes define two theorem styles and several pre-defined
% theorem environments:
% \begin{description}
% \item[acmplain:] this is  the style used for
% |theorem|,
% |conjecture|,
% |proposition|,
% |lemma|,
% |corollary|, and
% \item[acmdefinition:] this is the style used for |example| and
% |definition|.
% \end{description}
%
%
%
%\subsection{Online-only and offline-only material}
%\label{sec:ug_screen}
%
% \DescribeEnv{printonly}%
% \DescribeEnv{screenonly}%
% Some supplementary material in ACM publication is put online, but
% not in the printed version.  The text inside the environment
% |screenonly| will be typeset only when the option |screen| (see
% Section~\ref{sec:invocation}) is set to |true|.  Conversely, the
% text inside the environment |printonly| is typset only when this
% option is set to |false|.  For example
% \begin{verbatim}
% \section{Supplementary materials}
%
% \begin{printonly}
%   This section is included in the online version of the paper.
% \end{printonly}
%
% \begin{screenonly}
%   (The actual section).
% \end{screenonly}
%
% \end{verbatim}
%
%
%
%\subsection{Note about anonymous mode}
%\label{sec:ug_anonymous}
%
% \DescribeEnv{anonsuppress}%
% When the option |anonymous| is selected, \TeX\ suppresses author
% information (including number of authors) for a blind review.
% However, sometimes the information identifying the authors may be
% present in the body of the paper, for example, in the
% acknowledgements.  The environment |anonsuppress| is used to
% suppress such information, for example
% \begin{verbatim}
% \section*{Acknowledgements}
% \begin{anonsuppress}
%   The authors wish to thank Prof. C.~O.~Lleague for her generous
%   advices and the Society for Development of Oort Cloud for the
%   financial support.
% \end{anonsuppress}
% \end{verbatim}
% 
%
%\subsection{Bibliography}
%\label{sec:ug_bibliography}
%
% The Boolean option |natbib| selects whether to use |natbib| package
% for bibliography.  If you use |natbib|, then commands like
% \cs{citep} and \cs{citeauthor} are automatically supported.  You may
% customize \cs{natbib} using \cs{setcitestyle} command, for example,
% \begin{verbatim}
% \setcitestyle{numbers,sort&compress}
% \end{verbatim}
% 
%
% ACM journals use |natbib| and the style
% |ACM-Reference-Format-Journals|.
%
% Most ACM conference proceedings do \emph{not} use |natbib|.
% SIGGRAPH conferences use |acmsiggraph| style.  SIGCHI conferences
% use |SIGCHI-Reference-Format| style.  The other conferences employ
% one of the four styles:
% \begin{enumerate}
% \item acm-abbrv
% \item acm-alpha
% \item acm-plain
% \item acm-unsrt
% \end{enumerate}
% The author should consult specific instructions about the
% style to choose.
%
%
%
%\subsection{Colors}
%\label{sec:ug_colors}
%
% While printed ACM publications are usually black and white, screen
% mode allows the use of colors.  The ACM classes pre-define several
% colors according to~\cite{ACMIdentityStandards}:  |ACMBlue|,
% |ACMYellow|, |ACMOrange|, |ACMRed|, |ACMLightBlue|, |ACMGreen|,
% |ACMPurple|, |ACMDarkBlue|.  You can use them in the color
% assignments.
%
%
% \StopEventually{
% \clearpage
% \bibliography{acmart}
% \bibliographystyle{unsrt}}
%
% \clearpage
%
%
%\section{Implementation}
%\label{sec:impl}
%
%\subsection{Identification}
%\label{sec:ident}
%
% We start with the declaration who we are.  Most |.dtx| files put
% driver code in a separate driver file |.drv|.  We roll this code into the
% main file, and use the pseudo-guard |<gobble>| for it.
%    \begin{macrocode}
%<class>\NeedsTeXFormat{LaTeX2e}
%<*gobble>
\ProvidesFile{acmart.dtx}
%</gobble>
%<class>\ProvidesClass{acmart}
[2016/05/18 v1.09 Typesetting articles for Association of
Computing Machinery]
%    \end{macrocode}
%
% \changes{v1.00}{2016/04/14}{First released version}
% \changes{v1.01}{2016/04/18}{Defined ACM colors}
% \changes{v1.01}{2016/04/18}{Changed hyperref colors in screen mode
% (closes \url{https://github.com/borisveytsman/acmart/issues/1})}
% \changes{v1.01}{2016/04/18}{Set headheight to 1pc for all formats
% (closes \url{https://github.com/borisveytsman/acmart/issues/5})}
% \changes{v1.02}{2016/04/21}{Documentation changes
% (closes \url{https://github.com/borisveytsman/acmart/issues/13})}
% \changes{v1.02}{2016/04/21}{Added TOPS and TSC
% (closes \url{https://github.com/borisveytsman/acmart/issues/12})}
% \changes{v1.03}{2016/04/22}{Added authorversion option
% (closes \url{https://github.com/borisveytsman/acmart/issues/9})}
% \changes{v1.03}{2016/04/22}{Added anonsuppress environment}
% \changes{v1.04}{2016/04/26}{Updated bibliography for siggraph}
% \changes{v1.05}{2016/04/27}{Patched \cs{setcitestyle} command;
% closes \url{https://github.com/borisveytsman/acmart/issues/19}}
% \changes{v1.05}{2016/04/27}{Added processing doi numbers for
% acmsiggraph and doi numbers for sigproc.bib}
% \changes{v1.08}{2016/05/13}{SIGPLAN reformatting by Matthew Fluet}
% \changes{v1.08}{2016/05/13}{Typos corrected (Tobias Pape)}
% \changes{v1.09}{2016/05/18}{Revert SIGPLAN caption rules}
%
%
% And the driver code:
%    \begin{macrocode}
%<*gobble>
\documentclass{ltxdoc}
\usepackage{array,booktabs,amsmath,graphicx,fancyvrb,tabularx}
\usepackage[tt=false]{libertine}
\usepackage[varqu]{zi4}
\usepackage[libertine]{newtxmath}
\usepackage[tableposition=top]{caption}
\usepackage{hypdoc}
\PageIndex
\CodelineIndex
\RecordChanges
\EnableCrossrefs
\begin{document}
  \DocInput{acmart.dtx}
\end{document}
%</gobble>
%<*class>
\def\@classname{acmart}
%    \end{macrocode}
%
% \subsection{Options}
% \label{sec:options}
%
% We need |xkeyval| since some of our options may have values:
%    \begin{macrocode}
\RequirePackage{xkeyval}
%    \end{macrocode}
%
% \begin{macro}{format}
%   The possible formats
%    \begin{macrocode}
\define@choicekey*+{acmart.cls}{format}[\ACM@format\ACM@format@nr]{%
  manuscript, acmsmall, acmlarge, acmtog, sigconf, siggraph,
  sigplan, sigchi, sigchi-a}[manuscript]{}{%
  \ClassError{\@classname}{The option format must be manuscript,
    acmsmall, acmlarge, acmtog, sigconf, siggraph,
    sigplan, sigchi or sigchi-a}}
\def\@DeclareACMFormat#1{\DeclareOptionX{#1}{\setkeys{acmart.cls}{format=#1}}}
\@DeclareACMFormat{manuscript}
\@DeclareACMFormat{acmsmall}
\@DeclareACMFormat{acmlarge}
\@DeclareACMFormat{acmtog}
\@DeclareACMFormat{sigconf}
\@DeclareACMFormat{siggraph}
\@DeclareACMFormat{sigplan}
\@DeclareACMFormat{sigchi}
\@DeclareACMFormat{sigchi-a}
\ExecuteOptionsX{format}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@ACM@screen}
%   Whether we use screen mode
%    \begin{macrocode}
\define@boolkey+{acmart.cls}[@ACM@]{screen}[true]{%
  \if@ACM@screen
    \PackageInfo{\@classname}{Using screen mode}%
  \else
    \PackageInfo{\@classname}{Not using screen mode}%
  \fi}{\PackageError{\@classname}{Option screen can be either true or
    false}}
\ExecuteOptionsX{screen=false}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\if@ACM@review}
%   Whether we use review mode
%    \begin{macrocode}
\define@boolkey+{acmart.cls}[@ACM@]{review}[true]{%
  \if@ACM@review
    \PackageInfo{\@classname}{Using review mode}%
  \else
    \PackageInfo{\@classname}{Not using review mode}%
  \fi}{\PackageError{\@classname}{Option review can be either true or
    false}}
\ExecuteOptionsX{review=false}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@ACM@authorversion}
% \changes{v1.03}{2016/04/22}{Added macro}
%   Whether we use author's version
%    \begin{macrocode}
\define@boolkey+{acmart.cls}[@ACM@]{authorversion}[true]{%
  \if@ACM@authorversion
    \PackageInfo{\@classname}{Using authorversion mode}%
  \else
    \PackageInfo{\@classname}{Not using authorversion mode}%
  \fi}{\PackageError{\@classname}{Option authorversion can be either true or
    false}}
\ExecuteOptionsX{authorversion=false}
%    \end{macrocode}
%
% \end{macro}
%
%
%
% \begin{macro}{\if@ACM@natbib}
%   Whether we use natbib mode
%    \begin{macrocode}
\define@boolkey+{acmart.cls}[@ACM@]{natbib}[true]{%
  \if@ACM@natbib
    \PackageInfo{\@classname}{Using natbib mode}%
  \else
    \PackageInfo{\@classname}{Not using natbib mode}%
  \fi}{\PackageError{\@classname}{Option natbib can be either true or
    false}}
\ExecuteOptionsX{natbib=false}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\if@ACM@anonymous}
%   Whether we use anonymous mode
%    \begin{macrocode}
\define@boolkey+{acmart.cls}[@ACM@]{anonymous}[true]{%
  \if@ACM@anonymous
    \PackageInfo{\@classname}{Using anonymous mode}%
  \else
    \PackageInfo{\@classname}{Not using anonymous mode}%
  \fi}{\PackageError{\@classname}{Option anonymous can be either true or
    false}}
\ExecuteOptionsX{anonymous=false}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\ACM@fontsize}
%   The font size to pass to the base class
%    \begin{macrocode}
\def\ACM@fontsize{}
\DeclareOptionX{9pt}{\edef\ACM@fontsize{\CurrentOption}}
\DeclareOptionX{10pt}{\edef\ACM@fontsize{\CurrentOption}}
\DeclareOptionX{11pt}{\edef\ACM@fontsize{\CurrentOption}}
\DeclareOptionX{12pt}{\edef\ACM@fontsize{\CurrentOption}}
%    \end{macrocode}
%
% \end{macro}
%
%
% \changes{v1.01}{2016/04/18}{Explicitly put draft option
% (closes \url{https://github.com/borisveytsman/acmart/issues/4})}
%
%    \begin{macrocode}
\DeclareOptionX{draft}{\PassOptionsToClass{\CurrentOption}{amsart}}
\DeclareOptionX{*}{\PassOptionsToClass{\CurrentOption}{amsart}}
\ProcessOptionsX
\ClassInfo{\@classname}{Using format \ACM@format, number \ACM@format@nr}
%    \end{macrocode}
%
%
%
%\subsection{Setting switches}
%\label{sec:switches}
%
% \begin{macro}{\if@ACM@manuscript}
%   Whether we use manuscript mode
%    \begin{macrocode}
\newif\if@ACM@manuscript
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@ACM@journal}
%   There are two kinds of publications: journals and books
%    \begin{macrocode}
\newif\if@ACM@journal
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@ACM@sigchiamode}
%   The formatting of SIGCHI abstracts is quite unusual.  We have a
%   special switch for them.
%    \begin{macrocode}
\newif\if@ACM@sigchiamode
%    \end{macrocode}
%
% \end{macro}
%
%
% Setting up switches
%    \begin{macrocode}
\ifnum\ACM@format@nr=0\relax
  \@ACM@manuscripttrue
\else
  \@ACM@manuscriptfalse
\fi
\@ACM@sigchiamodefalse
\ifcase\ACM@format@nr
\relax % manuscript
  \@ACM@journaltrue
\or % acmsmall
  \@ACM@journaltrue
\or % acmlarge
  \@ACM@journaltrue
\or % acmtog
  \@ACM@journaltrue
\or % sigconf
  \@ACM@journalfalse
\or % siggraph
  \@ACM@journalfalse
 \or % sigplan
  \@ACM@journalfalse
 \or % sigchi
  \@ACM@journalfalse
\or % sigchi-a
  \@ACM@journalfalse
  \@ACM@sigchiamodetrue
\fi
%    \end{macrocode}
%
%
%\subsection{Loading base class and package}
%\label{sec:loading}
%
%
% At this point we either have \cs{ACM@fontsize}, or use defaults
%    \begin{macrocode}
\ifx\ACM@fontsize\@empty
  \ifcase\ACM@format@nr
  \relax % manuscript
    \def\ACM@fontsize{9pt}%
  \or % acmsmall
    \def\ACM@fontsize{10pt}%
  \or % acmlarge
    \def\ACM@fontsize{9pt}%
  \or % acmtog
    \def\ACM@fontsize{9pt}%
  \or % sigconf
    \def\ACM@fontsize{9pt}%
  \or % siggraph
    \def\ACM@fontsize{9pt}%
   \or % sigplan
    \def\ACM@fontsize{9pt}%
   \or % sigchi
    \def\ACM@fontsize{10pt}%
  \or % sigchi-a
    \def\ACM@fontsize{10pt}%
  \fi
\fi
\ClassInfo{\@classname}{Using fontsize \ACM@fontsize}
\LoadClass[\ACM@fontsize, reqno]{amsart}
\RequirePackage{microtype}
%    \end{macrocode}
%
%
% We need |totpages| package to calculate the number of pages
%    \begin{macrocode}
\RequirePackage{totpages}
%    \end{macrocode}
%
% The |amsmath| \cs{collect@body} is defined using \cs{def}.  We load
% |environ| to access the \cs{long} version of the command
%    \begin{macrocode}
\RequirePackage{environ}
%    \end{macrocode}
%
% We use |setspace| for doublespacing
%    \begin{macrocode}
\if@ACM@manuscript
\RequirePackage{setspace}
\onehalfspacing
\fi
%    \end{macrocode}
%
% Citations.  We patch \cs{setcitestyle} to allow, e.g.,
% \cs{setcitestyle}|{sort}| and \cs{setcitestyle}|{nosort}|
%    \begin{macrocode}
\if@ACM@natbib
  \RequirePackage{natbib}
  \renewcommand{\bibfont}{\bibliofont}
  \renewcommand\setcitestyle[1]{
  \@for\@tempa:=#1\do
  {\def\@tempb{round}\ifx\@tempa\@tempb
     \renewcommand\NAT@open{(}\renewcommand\NAT@close{)}\fi
   \def\@tempb{square}\ifx\@tempa\@tempb
     \renewcommand\NAT@open{[}\renewcommand\NAT@close{]}\fi
   \def\@tempb{angle}\ifx\@tempa\@tempb
     \renewcommand\NAT@open{$<$}\renewcommand\NAT@close{$>$}\fi
   \def\@tempb{curly}\ifx\@tempa\@tempb
     \renewcommand\NAT@open{\{}\renewcommand\NAT@close{\}}\fi
   \def\@tempb{semicolon}\ifx\@tempa\@tempb
     \renewcommand\NAT@sep{;}\fi
   \def\@tempb{colon}\ifx\@tempa\@tempb
     \renewcommand\NAT@sep{;}\fi
   \def\@tempb{comma}\ifx\@tempa\@tempb
     \renewcommand\NAT@sep{,}\fi
   \def\@tempb{authoryear}\ifx\@tempa\@tempb
     \NAT@numbersfalse\fi
   \def\@tempb{numbers}\ifx\@tempa\@tempb
     \NAT@numberstrue\NAT@superfalse\fi
   \def\@tempb{super}\ifx\@tempa\@tempb
     \NAT@numberstrue\NAT@supertrue\fi
   \def\@tempb{nobibstyle}\ifx\@tempa\@tempb
     \let\bibstyle=\@gobble\fi
   \def\@tempb{bibstyle}\ifx\@tempa\@tempb
     \let\bibstyle=\@citestyle\fi
   \def\@tempb{sort}\ifx\@tempa\@tempb
     \def\NAT@sort{\@ne}\fi
   \def\@tempb{nosort}\ifx\@tempa\@tempb
     \def\NAT@sort{\z@}\fi
   \def\@tempb{compress}\ifx\@tempa\@tempb
     \def\NAT@cmprs{\@ne}\fi
   \def\@tempb{nocompress}\ifx\@tempa\@tempb
     \def\NAT@cmprs{\@z}\fi
   \def\@tempb{sort&compress}\ifx\@tempa\@tempb
     \def\NAT@sort{\@ne}\def\NAT@cmprs{\@ne}\fi
   \def\@tempb{mcite}\ifx\@tempa\@tempb
     \let\NAT@merge\@ne\fi
   \def\@tempb{merge}\ifx\@tempa\@tempb
     \@ifnum{\NAT@merge<\tw@}{\let\NAT@merge\tw@}{}\fi
   \def\@tempb{elide}\ifx\@tempa\@tempb
     \@ifnum{\NAT@merge<\thr@@}{\let\NAT@merge\thr@@}{}\fi
   \def\@tempb{longnamesfirst}\ifx\@tempa\@tempb
     \NAT@longnamestrue\fi
   \def\@tempb{nonamebreak}\ifx\@tempa\@tempb
     \def\NAT@nmfmt#1{\mbox{\NAT@up#1}}\fi
   \expandafter\NAT@find@eq\@tempa=\relax\@nil
   \if\@tempc\relax\else
     \expandafter\NAT@rem@eq\@tempc
     \def\@tempb{open}\ifx\@tempa\@tempb
      \xdef\NAT@open{\@tempc}\fi
     \def\@tempb{close}\ifx\@tempa\@tempb
      \xdef\NAT@close{\@tempc}\fi
     \def\@tempb{aysep}\ifx\@tempa\@tempb
      \xdef\NAT@aysep{\@tempc}\fi
     \def\@tempb{yysep}\ifx\@tempa\@tempb
      \xdef\NAT@yrsep{\@tempc}\fi
     \def\@tempb{notesep}\ifx\@tempa\@tempb
      \xdef\NAT@cmt{\@tempc}\fi
     \def\@tempb{citesep}\ifx\@tempa\@tempb
      \xdef\NAT@sep{\@tempc}\fi
   \fi
  }%
  \NAT@@setcites
  }
  \setcitestyle{%
    open={[},close={]},citesep={;},%
    authoryear,aysep={},yysep={,},%
    notesep={, }}
\fi
%    \end{macrocode}
%
% Before we call |hyperref|, we redefine \cs{startsection} commands to
% their \LaTeX\ defaults, since |amsart| ones are too AMS-specific.
% We need to do this early since we want |hyperref| to have a chance
% to redefine them again:
%    \begin{macrocode}
\def\@startsection#1#2#3#4#5#6{%
  \if@noskipsec \leavevmode \fi
  \par
  \@tempskipa #4\relax
  \@afterindenttrue
  \ifdim \@tempskipa <\z@
    \@tempskipa -\@tempskipa \@afterindentfalse
  \fi
  \if@nobreak
    \everypar{}%
  \else
    \addpenalty\@secpenalty\addvspace\@tempskipa
  \fi
  \@ifstar
    {\@ssect{#3}{#4}{#5}{#6}}%
    {\@dblarg{\@sect{#1}{#2}{#3}{#4}{#5}{#6}}}}
\def\@sect#1#2#3#4#5#6[#7]#8{%
  \ifnum #2>\c@secnumdepth
    \let\@svsec\@empty
  \else
    \refstepcounter{#1}%
    \protected@edef\@svsec{\@seccntformat{#1}\relax}%
  \fi
  \@tempskipa #5\relax
  \ifdim \@tempskipa>\z@
    \begingroup
      #6{%
        \@hangfrom{\hskip #3\relax\@svsec}%
          \interlinepenalty \@M #8\@@par}%
    \endgroup
    \csname #1mark\endcsname{#7}%
    \addcontentsline{toc}{#1}{%
      \ifnum #2>\c@secnumdepth \else
        \protect\numberline{\csname the#1\endcsname}%
      \fi
      #7}%
  \else
    \def\@svsechd{%
      #6{\hskip #3\relax
      \@svsec #8}%
      \csname #1mark\endcsname{#7}%
      \addcontentsline{toc}{#1}{%
        \ifnum #2>\c@secnumdepth \else
          \protect\numberline{\csname the#1\endcsname}%
        \fi
        #7}}%
  \fi
  \@xsect{#5}}
\def\@xsect#1{%
  \@tempskipa #1\relax
  \ifdim \@tempskipa>\z@
    \par \nobreak
    \vskip \@tempskipa
    \@afterheading
  \else
    \@nobreakfalse
    \global\@noskipsectrue
    \everypar{%
      \if@noskipsec
        \global\@noskipsecfalse
       {\setbox\z@\lastbox}%
        \clubpenalty\@M
        \begingroup \@svsechd \endgroup
        \unskip
        \@tempskipa #1\relax
        \hskip -\@tempskipa
      \else
        \clubpenalty \@clubpenalty
        \everypar{}%
      \fi}%
  \fi
  \ignorespaces}
\def\@seccntformat#1{\csname the#1\endcsname\quad}
\def\@ssect#1#2#3#4#5{%
  \@tempskipa #3\relax
  \ifdim \@tempskipa>\z@
    \begingroup
      #4{%
        \@hangfrom{\hskip #1}%
          \interlinepenalty \@M #5\@@par}%
    \endgroup
  \else
    \def\@svsechd{#4{\hskip #1\relax #5}}%
  \fi
  \@xsect{#3}}
%    \end{macrocode}
%
%
% And |hyperref|
%    \begin{macrocode}
\let\@footnotemark@nolink\@footnotemark
\let\@footnotetext@nolink\@footnotetext
\RequirePackage{hyperref}
\urlstyle{rm}
\ifcase\ACM@format@nr
\relax % manuscript
\or % acmsmall
\or % acmlarge
\or % acmtog
\or % sigconf
\or % siggraph
\or % sigplan
  \urlstyle{sf}
\or % sigchi
\or % sigchi-a
  \urlstyle{sf}
\fi
\if@ACM@screen
  \hypersetup{colorlinks,
    linkcolor=ACMRed,
    citecolor=ACMPurple,
    urlcolor=ACMDarkBlue,
    filecolor=ACMDarkBlue}
\else
  \hypersetup{hidelinks}
\fi
%    \end{macrocode}
%
% Bibliography mangling.  Siggraph does not want the label.  
%    \begin{macrocode}
\if@ACM@natbib
  \let\citeN\cite
  \let\cite\citep
  \let\citeANP\citeauthor
  \let\citeNN\citeyearpar
  \let\citeyearNP\citeyear
  \let\citeyear\citeyearpar
  \let\citeNP\citealt
  \def\shortcite#1{\citeyear{#1}}
  \DeclareRobustCommand\citeA
     {\begingroup\NAT@swafalse
       \let\NAT@ctype\@ne\NAT@partrue\NAT@fullfalse\NAT@open\NAT@citetp}
  \providecommand\newblock{}
\else
  \providecommand\citename[1]{#1}
\fi
\ifcase\ACM@format@nr
\relax % manuscript
\or % acmsmall
\or % acmlarge
\or % acmtog
\or % sigconf
\or % siggraph
   \def\@biblabel#1{}
   \ifx\bibhang\@undefined
      \newlength\bibhang
   \fi
   \setlength{\bibhang}{1em}
    \renewenvironment{thebibliography}[1]{%
      \@bibtitlestyle
      \normalfont\bibliofont\labelsep .5em\relax
      \renewcommand\theenumiv{\arabic{enumiv}}\let\p@enumiv\@empty
      \list{\@biblabel{\theenumiv}}{\labelwidth\z@
        \setlength{\itemindent}{-\bibhang}%
        \setlength{\leftmargin}{\bibhang}%
        \labelsep\z@
        \def\newblock{\hskip .11em plus .33em minus .07em}%
        \usecounter{enumiv}}%
      \sloppy \clubpenalty\@M \widowpenalty\clubpenalty
      \sfcode`\.=\@m
    }{%
      \def\@noitemerr{\@latex@warning{Empty `thebibliography' environment}}%
      \endlist
    }
\or % sigplan  
\or % sigchi
\or % sigchi-a
\fi
%    \end{macrocode}
%
% Graphics and color
%    \begin{macrocode}
\RequirePackage{graphicx, xcolor}
%    \end{macrocode}
%
% We define ACM colors according to~\cite{ACMIdentityStandards}:
%    \begin{macrocode}
\definecolor[named]{ACMBlue}{cmyk}{1,0.1,0,0.1}
\definecolor[named]{ACMYellow}{cmyk}{0,0.16,1,0}
\definecolor[named]{ACMOrange}{cmyk}{0,0.42,1,0.01}
\definecolor[named]{ACMRed}{cmyk}{0,0.90,0.86,0}
\definecolor[named]{ACMLightBlue}{cmyk}{0.49,0.01,0,0}
\definecolor[named]{ACMGreen}{cmyk}{0.20,0,1,0.19}
\definecolor[named]{ACMPurple}{cmyk}{0.55,1,0,0.15}
\definecolor[named]{ACMDarkBlue}{cmyk}{1,0.58,0,0.21}
%    \end{macrocode}
% 
%
%\subsection{Paper size and paragraphing}
%\label{sec:paper}
%
% We use |geometry| for dimensions
%    \begin{macrocode}
\RequirePackage{geometry}
\ifcase\ACM@format@nr
\relax % manuscript
   \geometry{letterpaper,head=1pc}%
\or % acmsmall
   \geometry{twoside=true,
     includeheadfoot, head=1pc, foot=2pc,
     paperwidth=6.75in, paperheight=10in,
     top=58pt, bottom=44pt, inner=46pt, outer=46pt
   }%
\or % acmlarge
   \geometry{twoside=true, head=1pc, foot=2pc,
     paperwidth=8.5in, paperheight=11in,
     includeheadfoot,
     top=78pt, bottom=114pt, inner=81pt, outer=81pt
     }%
\or % acmtog
   \geometry{twoside=true, head=1pc, foot=2pc,
     paperwidth=8.5in, paperheight=11in,
     includeheadfoot, columnsep=24pt,
     top=52pt, bottom=75pt, inner=52pt, outer=52pt
     }%
\or % sigconf
   \geometry{twoside=true, head=1pc,
     paperwidth=8.5in, paperheight=11in,
     includeheadfoot, columnsep=2pc,
     top=57pt, bottom=75pt, inner=54pt, outer=57pt
     }%
\or % siggraph
   \geometry{twoside=true, head=1pc,
     paperwidth=8.5in, paperheight=11in,
     includeheadfoot, columnsep=2pc,
     top=57pt, bottom=75pt, inner=54pt, outer=57pt
     }%
\or % sigplan
   \geometry{twoside=true, head=1pc,
     paperwidth=8.5in, paperheight=11in,
     includeheadfoot=false, columnsep=2pc,
     top=1in, bottom=1in, inner=0.75in, outer=0.75in
     }%
\or % sigchi
   \geometry{twoside=true, head=1pc,
     paperwidth=8.5in, paperheight=11in,
     includeheadfoot, columnsep=2pc,
     top=66pt, bottom=78pt, inner=54pt, outer=48pt
     }%
\or % sigchi-a
   \geometry{twoside=false, head=1pc,
     paperwidth=11in, paperheight=8.5in,
     includeheadfoot, marginparsep=72pt,
     marginparwidth=170pt, columnsep=20pt,
     top=72pt, bottom=72pt, left=314pt, right=72pt
     }%
     \@mparswitchfalse
     \reversemarginpar
\fi
%    \end{macrocode}
%
%
% \begin{macro}{\parindent}
% \begin{macro}{\parskip}
%   Paragraphing
%    \begin{macrocode}
\setlength\parindent{10\p@}
\setlength\parskip{\z@}
\ifcase\ACM@format@nr
\relax % manuscript
\or % acmsmall
\or % acmlarge
\or % acmtog
  \setlength\parindent{9\p@}%
\or % sigconf
\or % siggraph
\or % sigplan
\or % sigchi
\or % sigchi-a
\fi
%    \end{macrocode}
%
% \end{macro}
% \end{macro}
%
% Footnotes require some consideration.  We have several layers of
% footnotes:  frontmatter footnotes, ``regular'' footnotes and the
% special insert for bibstrip.  In the old ACM classes bibstrip was a
% \cs{@float}.  The problem with floats is that they tend to, well,
% float---and we want the guarantee they stay.  
%    \begin{macrocode}
\RequirePackage{manyfoot}
\DeclareNewFootnote{copyrightpermission}
\skip\footinscopyrightpermission=0.1\baselineskip plus 0.1\baselineskip
%    \end{macrocode}
% 
%
% \begin{macro}{\footnoterule}
%   Tschichold's rules:
%    \begin{macrocode}
\def\footnoterule{\kern-3\p@
  \hrule \@width \columnwidth \kern 2.6\p@}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\endminipage}
%   We do not use footnote rules in minipages
%    \begin{macrocode}
\def\endminipage{%
    \par
    \unskip
    \ifvoid\@mpfootins\else
      \vskip\skip\@mpfootins
      \normalcolor
      \unvbox\@mpfootins
    \fi
    \@minipagefalse   %% added 24 May 89
  \color@endgroup
  \egroup
  \expandafter\@iiiparbox\@mpargs{\unvbox\@tempboxa}}

%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@makefntext}
%   We do note use indentation for footnotes
%    \begin{macrocode}
\def\@makefntext{\noindent\@makefnmark}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@footnotetext}
%   In sigchi-a mode our footnotes are on the margins!
%    \begin{macrocode}
\if@ACM@sigchiamode
\long\def\@footnotetext#1{\marginpar{%
    \reset@font\small
    \interlinepenalty\interfootnotelinepenalty
    \protected@edef\@currentlabel{%
       \csname p@footnote\endcsname\@thefnmark
    }%
    \color@begingroup
      \@makefntext{%
        \rule\z@\footnotesep\ignorespaces#1\@finalstrut\strutbox}%
    \color@endgroup}}%
\fi
%    \end{macrocode}
%
% \end{macro}
%
%\subsection{Fonts}
%\label{sec:fonts}
%
% We use Times throughout
%    \begin{macrocode}
\usepackage[tt=false]{libertine}
\usepackage[varqu]{zi4}
\usepackage[libertine]{newtxmath}
%    \end{macrocode}
%
% The SIGCHI extended abstracts are sans serif:
%    \begin{macrocode}
\if@ACM@sigchiamode
  \renewcommand{\familydefault}{\sfdefault}
\fi
%    \end{macrocode}
%
%
%\subsection{Floats}
%\label{sec:floats}
%
% We use |caption| package
%    \begin{macrocode}
\RequirePackage{caption, float}
\captionsetup[table]{position=top}
\if@ACM@journal
  \captionsetup{labelfont={sf, small},
    textfont={sf, small},  margin=\z@}
  \captionsetup[figure]{name={Fig.}}
\else
  \captionsetup{labelfont={bf},
    textfont={bf}, labelsep=colon, margin=\z@}
  \ifcase\ACM@format@nr
  \relax % manuscript
  \or % acmsmall
  \or % acmlarge
  \or % acmtog
  \or % sigconf
  \or % siggraph
    \captionsetup{textfont={it}}
  \or % sigplan
    \captionsetup{labelfont={bf},
      textfont={normalfont}, labelsep=period, margin=\z@}
  \or % sigchi
    \captionsetup[figure]{labelfont={bf, small},
      textfont={bf, small}}
  \or % sigchi-a
    \captionsetup[figure]{labelfont={bf, small},
      textfont={bf, small}}
  \fi
\fi
%    \end{macrocode}
%
% \begin{macro}{sidebar}
%   The sidebar environment:
%    \begin{macrocode}
\newfloat{sidebar}{}{sbar}
\floatname{sidebar}{Sidebar}
\renewenvironment{sidebar}{\Collect@Body\@sidebar}{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@sidebar}
%   The processing of the saved text
%    \begin{macrocode}
\long\def\@sidebar#1{\bgroup\captionsetup{type=sidebar}%
  \marginpar{\small#1}\egroup}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{marginfigure}
%   The marginfigure environment:
%    \begin{macrocode}
\newenvironment{marginfigure}{\Collect@Body\@marginfigure}{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@marginfigure}
%   The processing of the saved text
%    \begin{macrocode}
\long\def\@marginfigure#1{\bgroup\captionsetup{type=figure}%
  \marginpar{\small#1}\egroup}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{margintable}
%   The margintable environment:
%    \begin{macrocode}
\newenvironment{margintable}{\Collect@Body\@margintable}{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@margintable}
%   The processing of the saved text
%    \begin{macrocode}
\long\def\@margintable#1{\bgroup\captionsetup{type=table}%
  \marginpar{\small#1}\egroup}
%    \end{macrocode}
%
% \end{macro}
%
%
% SIGCHI extended abstract provides an interesting possibility to push
% into the margin.  Here we use |figure*| and |table*| for this.
% \begin{macro}{\fulltextwidth}
%   We define the width of the boxes as
%    \begin{macrocode}
\newdimen\fulltextwidth
\fulltextwidth=\dimexpr(\textwidth+\marginparwidth+\marginparsep)
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@dblfloat}
%   We redefine the double float command.  First, we make the size
%   bigger.  Second, our default position is going to be |tp| (to give
%   marginalia a chance)
%    \begin{macrocode}
\if@ACM@sigchiamode
\def\@dblfloat{\bgroup\columnwidth=\fulltextwidth
  \let\@endfloatbox\@endwidefloatbox
  \def\@fpsadddefault{\def\@fps{tp}}%
  \@float}
\fi
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\end@dblfloat}
% And the end.  Just adding a \cs{bgroup}.
%    \begin{macrocode}
\if@ACM@sigchiamode
\def\end@dblfloat{%
    \end@float\egroup}
\fi
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@endwidefloatbox}
%   This is the end of a wide box - we basically move everything
%   to the left
%    \begin{macrocode}
\def\@endwidefloatbox{%
  \par\vskip\z@skip
  \@minipagefalse
  \outer@nobreak
  \egroup
  \color@endbox
  \global\setbox\@currbox=\vbox{\moveleft
    \dimexpr(\fulltextwidth-\textwidth)\box\@currbox}%
  \wd\@currbox=\textwidth
}
%    \end{macrocode}
%
% \end{macro}
%
%
%\subsection{Lists}
%\label{sec:lists}
%
%    \begin{macrocode}
\ifcase\ACM@format@nr
\relax % manuscript
\or % acmsmall
\or % acmlarge
\or % acmtog
\or % sigconf
\or % siggraph
\or % sigplan
\def\labelenumi{\theenumi.}
\def\labelenumii{\theenumii.}
\def\labelenumiii{\theenumiii.}
\def\labelenumiv{\theenumiv.}
\or % sigchi
\or % sigchi-a
\fi
%    \end{macrocode}
%
%
%\subsection{Top matter data}
%\label{sec:top_matter_data}
%
%
%
% We use keyval interface to define journal title and relevant
% information
%    \begin{macrocode}
\define@choicekey*+{ACM}{acmJournal}[\@journalCode\@journalCode@nr]{%
  CIE,%
  CSUR,%
  JACM,%
  JDIQ,%
  JEA,%
  JERIC,%
  JETC,%
  JOCCH,%
  TAAS,%
  TACCESS,%
  TACO,%
  TALG,%
  TALLIP,%
  TAP,%
  TCPS,%
  TEAC,%
  TECS,%
  TIIS,%
  TISSEC,%
  TIST,%
  TKDD,%
  TMIS,%
  TOCE,%
  TOCHI,%
  TOCL,%
  TOCS,%
  TOCT,%
  TODAES,%
  TODS,%
  TOG,%
  TOIS,%
  TOIT,%
  TOMACS,%
  TOMM,%
  TOMPECS,%
  TOMS,%
  TOPC,%
  TOPS,%
  TOPLAS,%
  TOS,%
  TOSEM,%
  TOSN,%
  TRETS,%
  TSAS,%
  TSC,%
  TSLP,%
  TWEB%
}{%
\ifcase\@journalCode@nr
\relax % CIE
  \def\@journalName{ACM Computers in Entertainment}%
  \def\@journalNameShort{ACM Comput. Entertain.}%
  \def\@permissionCodeOne{1544-3574}%
\or % CSUR
  \def\@journalName{ACM Computing Surveys}%
  \def\@journalNameShort{ACM Comput. Surv.}%
  \def\@permissionCodeOne{0360-0300}%
\or % JACM
  \def\@journalName{Journal of the ACM}%
  \def\@journalNameShort{J. ACM}%
  \def\@permissionCodeOne{0004-5411}%
\or % JDIQ
  \def\@journalName{ACM Journal of Data and Information Quality}%
  \def\@journalNameShort{ACM J. Data Inform. Quality}%
  \def\@permissionCodeOne{1936-1955}%
\or % JEA
  \def\@journalName{ACM Journal of Experimental Algorithmics}%
  \def\@journalNameShort{ACM J. Exp. Algor.}%
  \def\@permissionCodeOne{1084-6654}%
\or % JERIC
  \def\@journalName{ACM Journal of Educational Resources in Computing}%
  \def\@journalNameShort{ACM J. Edu. Resources in Comput.}%
  \def\@permissionCodeOne{1073-0516}%
\or % JETC
  \def\@journalName{ACM Journal on Emerging Technologies in Computing Systems}%
  \def\@journalNameShort{ACM J. Emerg. Technol. Comput. Syst.}%
  \def\@permissionCodeOne{1550-4832}%
\or % JOCCH
  \def\@journalName{ACM Journal on Computing and Cultural Heritage}%
  \def\@journalName{ACM J. Comput. Cult. Herit.}%
\or % TAAS
  \def\@journalName{ACM Transactions on Autonomous and Adaptive Systems}%
  \def\@journalNameShort{ACM Trans. Autonom. Adapt. Syst.}%
  \def\@permissionCodeOne{1556-4665}%
\or % TACCESS
  \def\@journalName{ACM Transactions on Accessible Computing}%
  \def\@journalNameShort{ACM Trans. Access. Comput.}%
  \def\@permissionCodeOne{1936-7228}%
\or % TACO
  \def\@journalName{ACM Transactions on Architecture and Code Optimization}%
\or % TALG
  \def\@journalName{ACM Transactions on Algorithms}%
  \def\@journalNameShort{ACM Trans. Algor.}%
  \def\@permissionCodeOne{1549-6325}%
\or % TALLIP
  \def\@journalName{ACM Transactions on Asian and Low-Resource Language Information Processing}%
  \def\@journalNameShort{ACM Trans. Asian Low-Resour. Lang. Inf. Process.}%
  \def\@permissionCodeOne{2375-4699}%
\or % TAP
  \def\@journalName{ACM Transactions on Applied Perception}%
\or % TCPS
  \def\@journalName{ACM Transactions on Cyber-Physical Systems}%
\or % TEAC
  \def\@journalName{ACM Transactions on Economics and Computation}%
\or % TECS
  \def\@journalName{ACM Transactions on Embedded Computing Systems}%
  \def\@journalNameShort{ACM Trans. Embedd. Comput. Syst.}%
  \def\@permissionCodeOne{1539-9087}%
\or % TIIS
  \def\@journalName{ACM Transactions on Interactive Intelligent Systems}%
  \def\@journalNameShort{ACM Trans. Interact. Intell. Syst.}%
  \def\@permissionCodeOne{2160-6455}%
\or % TISSEC
  \def\@journalName{ACM Transactions on Information and System Security}%
  \def\@journalNameShort{ACM Trans. Info. Syst. Sec.}%
  \def\@permissionCodeOne{1094-9224}%
\or % TIST
  \def\@journalName{ACM Transactions on Intelligent Systems and Technology}%
  \def\@journalNameShort{ACM Trans. Intell. Syst. Technol.}%
  \def\@permissionCodeOne{2157-6904}%
\or % TKDD
  \def\@journalName{ACM Transactions on Knowledge Discovery from Data}%
  \def\@journalNameShort{ACM Trans. Knowl. Discov. Data.}%
  \def\@permissionCodeOne{1556-4681}%
\or % TMIS
  \def\@journalName{ACM Transactions on Management Information Systems}%
  \def\@journalNameShort{ACM Trans. Manag. Inform. Syst.}%
  \def\@permissionCodeOne{2158-656X}%
\or % TOCE
  \def\@journalName{ACM Transactions on Computing Education}%
  \def\@journalNameShort{ACM Trans. Comput. Educ.}%
  \def\@permissionCodeOne{1946-6226}%
\or % TOCHI
  \def\@journalName{ACM Transactions on Computer-Human Interaction}%
  \def\@journalNameShort{ACM Trans. Comput.-Hum. Interact.}%
  \def\@permissionCodeOne{1073-0516}%
\or % TOCL
  \def\@journalName{ACM Transactions on Computational Logic}%
  \def\@journalNameShort{ACM Trans. Comput. Logic}%
  \def\@permissionCodeOne{1529-3785}%
\or % TOCS
  \def\@journalName{ACM Transactions on Computer Systems}%
  \def\@journalNameShort{ACM Trans. Comput. Syst.}%
  \def\@permissionCodeOne{0734-2071}%
\or % TOCT
  \def\@journalName{ACM Transactions on Computation Theory}%
  \def\@journalNameShort{ACM Trans. Comput. Theory}%
  \def\@permissionCodeOne{1942-3454}%
\or % TODAES
  \def\@journalName{ACM Transactions on Design Automation of Electronic Systems}%
  \def\@journalNameShort{ACM Trans. Des. Autom. Electron. Syst.}%
  \def\@permissionCodeOne{1084-4309}%
\or % TODS
  \def\@journalName{ACM Transactions on Database Systems}%
  \def\@journalNameShort{ACM Trans. Datab. Syst.}%
  \def\@permissionCodeOne{0362-5915}%
\or % TOG
  \def\@journalName{ACM Transactions on Graphics}%
  \def\@journalNameShort{ACM Trans. Graph.}%
  \def\@permissionCodeOne{0730-0301}
\or % TOIS
  \def\@journalName{ACM Transactions on Information Systems}%
  \def\@journalName{ACM Transactions on Information Systems}%
  \def\@permissionCodeOne{1046-8188}%
\or % TOIT
  \def\@journalName{ACM Transactions on Internet Technology}%
  \def\@journalNameShort{ACM Trans. Internet Technol.}%
  \def\@permissionCodeOne{1533-5399}%
\or % TOMACS
  \def\@journalName{ACM Transactions on Modeling and Computer Simulation}%
  \def\@journalName{ACM Transactions on Modeling and Computer Simulation}%
  \def\@journalNameShort{ACM Trans. Model. Comput. Simul.}%
\or % TOMM
  \def\@journalName{ACM Transactions on Multimedia Computing, Communications and Applications}%
  \def\@journalNameShort{ACM Trans. Multimedia Comput. Commun. Appl.}%
  \def\@permissionCodeOne{1551-6857}%
  \def\@permissionCodeTwo{0100}%
\or % TOMPECS
  \def\@journalName{ACM Transactions on Modeling and Performance Evaluation of Computing Systems}%
  \def\@journalNameShort{ACM Trans. Model. Perform. Eval. Comput. Syst.}%
  \def\@permissionCodeOne{2376-3639}%
\or % TOMS
  \def\@journalName{ACM Transactions on Mathematical Software}%
  \def\@journalNameShort{ACM Trans. Math. Softw.}%
  \def\@permissionCodeOne{0098-3500}%
\or % TOPC
  \def\@journalName{ACM Transactions on Parallel Computing}%
  \def\@journalNameShort{ACM Trans. Parallel Comput.}%
  \def\@permissionCodeOne{1539-9087}%
\or % TOPS
  \def\@journalName{ACM Transactions on Privacy and Security}%
  \def\@journalNameShort{ACM Trans. Priv. Sec.}%
  \def\@permissionCodeOne{2471-2566}%
\or % TOPLAS
  \def\@journalName{ACM Transactions on Programming Languages and Systems}%
  \def\@journalNameShort{ACM Trans. Program. Lang. Syst.}%
  \def\@permissionCodeOne{0164-0925}%
\or % TOS
  \def\@journalName{ACM Transactions on Storage}%
  \def\@journalNameShort{ACM Trans. Storage}%
  \def\@permissionCodeOne{1553-3077}%
\or % TOSEM
  \def\@journalName{ACM Transactions on Software Engineering and Methodology}%
  \def\@journalNameShort{ACM Trans. Softw. Eng. Methodol.}%
  \def\@permissionCodeOne{1049-331X}%
\or % TOSN
  \def\@journalName{ACM Transactions on Sensor Networks}%
  \def\@journalNameShort{ACM Trans. Sensor Netw.}%
  \def\@permissionCodeOne{1550-4859}%
\or % TRETS
  \def\@journalName{ACM Transactions on Reconfigurable Technology and Systems}%
  \def\@journalNameShort{ACM Trans. Reconfig. Technol. Syst.}%
  \def\@permissionCodeOne{1936-7406}%
\or % TSAS
  \def\@journalName{ACM Transactions on Spatial Algorithms and Systems}%
  \def\@journalNameShort{ACM Trans. Spatial Algorithms Syst.}%
  \def\@permissionCodeOne{2374-0353}%
\or % TSC
  \def\@journalName{ACM Transactions on Social Computing}%
  \def\@journalNameShort{ACM Trans. Soc. Comput.}%
  \def\@permissionCodeOne{2469-7818}%
\or % TSLP
  \def\@journalName{ACM Transactions on Speech and Language Processing}%
  \def\@journalNameShort{ACM Trans. Speech Lang. Process.}%
  \def\@permissionCodeOne{1550-4875}%
\or % TWEB
  \def\@journalName{ACM Transactions on the Web}%
  \def\@journalNameShort{ACM Trans. Web}%
  \def\@permissionCodeOne{1559-1131}%
\fi
\ClassInfo{\@classname}{Using journal code \@journalCode}%
}{%
  \ClassError{\@classname}{Incorrect journal #1}%
}%
%    \end{macrocode}
% \begin{macro}{\acmJournal}
%   And the syntactic sugar around it
%    \begin{macrocode}
\def\acmJournal#1{\setkeys{ACM}{acmJournal=#1}}
%    \end{macrocode}
%
% \end{macro}
%
% The defaults:
%    \begin{macrocode}
\def\@journalName{}%
\def\@journalNameShort{\@journalName}%
\def\@permissionCodeOne{XXXX-XX}%
\def\@permissionCodeTwo{}%
%    \end{macrocode}
%
%
% \begin{macro}{\acmConference}
%   This is the conference command
%    \begin{macrocode}
\newcommand\acmConference[4][]{%
  \gdef\acmConference@shortname{#1}%
  \gdef\acmConference@name{#2}%
  \gdef\acmConference@date{#3}%
  \gdef\acmConference@venue{#4}%
  \ifx\acmConference@shortname\@empty
    \gdef\acmConference@shortname{#2}%
  \fi}
\acmConference[Conference'17]{ACM Conference}{July 2017}{Washington,
  DC, USA}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\subtitle}
%   The subtitle macro
%    \begin{macrocode}
\def\subtitle#1{\def\@subtitle{#1}}
\subtitle{}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\num@authors}
%   The total number of authors
%    \begin{macrocode}
\newcount\num@authors
\num@authors=0\relax
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\author}
%   Adding an author to the list of authors and addresses
%    \begin{macrocode}
\renewcommand\author[2][]{%
  \global\advance\num@authors by 1\relax
  \ifx\addresses\@empty
    \if@ACM@anonymous
      \gdef\addresses{\@author{Anonymous Author(s)}}%
      \gdef\authors{Anonymous Author(s)}%
    \else
      \gdef\addresses{\@author{#2}}%
      \gdef\authors{#2}%
    \fi
  \else
    \if@ACM@anonymous\else
      \g@addto@macro\addresses{\and\@author{#2}}%
      \g@addto@macro\authors{\and#2}%
    \fi
  \fi
  \if@ACM@anonymous
    \ifx\shortauthors\@empty
      \gdef\shortauthors{Anon.}%
    \fi
  \else
    \def\@tempa{#1}%
    \ifx\@tempa\@empty
      \ifx\shortauthors\@empty
        \gdef\shortauthors{#2}%
      \else
        \g@addto@macro\shortauthors{\and#2}%
      \fi
    \else
      \ifx\shortauthors\@empty
        \gdef\shortauthors{#1}%
      \else
        \g@addto@macro\shortauthors{\and#1}%
      \fi
    \fi
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\affiliation}
%   The macro \cs{affiliation} mimics \cs{address} from |amsart|.
%   Note that it has an optional argument we do not currently need,
%   but keep for the possible future use.
%    \begin{macrocode}
\newcommand{\affiliation}[2][]{%
  \if@ACM@anonymous\else
    \g@addto@macro\addresses{\affiliation{#1}{#2}}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\email}
%   The macro \cs{email} mimics \cs{email} from |amsart|.
%   Agian it has an optional argument we do not currently need,
%   but keep for the possible future use.
%    \begin{macrocode}
\renewcommand{\email}[2][]{%
  \if@ACM@anonymous\else
    \g@addto@macro\addresses{\email{#1}{#2}}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@titlenotes}
%   The titlenotes
%    \begin{macrocode}
\def\@titlenotes{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\titlenote}
%   Adding note to the title
%    \begin{macrocode}
\def\titlenote#1{%
  \g@addto@macro\@title{\footnotemark}%
  \if@ACM@anonymous
    \g@addto@macro\@titlenotes{%
      \stepcounter{footnote}\footnotetext{Title note}}%
  \else
    \g@addto@macro\@titlenotes{\stepcounter{footnote}\footnotetext{#1}}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@subtitlenotes}
%   The subtitlenotes
%    \begin{macrocode}
\def\@subtitlenotes{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\subtitlenote}
%   Adding note to the subtitle
%    \begin{macrocode}
\def\subtitlenote#1{%
  \g@addto@macro\@subtitle{\footnotemark}%
  \if@ACM@anonymous
    \g@addto@macro\@subtitlenotes{%
      \stepcounter{footnote}\footnotetext{Subtitle note}}%
  \else
    \g@addto@macro\@subtitlenotes{%
      \stepcounter{footnote}\footnotetext{#1}}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@authornotes}
%   The authornotes
%    \begin{macrocode}
\def\@authornotes{}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\authornote}
%   Adding note to the author
%    \begin{macrocode}
\def\authornote#1{%
  \if@ACM@anonymous\else
    \g@addto@macro\addresses{\@authornotemark}
    \g@addto@macro\@authornotes{%
      \stepcounter{footnote}\footnotetext{#1}}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmVolume}
%   The current volume
%    \begin{macrocode}
\def\acmVolume#1{\def\@acmVolume{#1}}
\acmVolume{VV}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmNumber}
%   The current number
%    \begin{macrocode}
\def\acmNumber#1{\def\@acmNumber{#1}}
\acmNumber{NNN}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmArticle}
%   The current article
%    \begin{macrocode}
\def\acmArticle#1{\def\@acmArticle{#1}}
\acmArticle{AA}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmArticleSeq}
% \changes{v1.04}{2016/04/26}{Name change by Matthew Fluet}
%   The sequence number
%    \begin{macrocode}
\def\acmArticleSeq#1{\def\@acmArticleSeq{#1}}
\acmArticleSeq{\@acmArticle}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmYear}
%   The current year
%    \begin{macrocode}
\def\acmYear#1{\def\@acmYear{#1}}
\acmYear{YYYY}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmMonth}
%   The current month
%    \begin{macrocode}
\def\acmMonth#1{\def\@acmMonth{#1}}
\acmMonth{MM}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\@acmPubDate}
%   The publication date
%    \begin{macrocode}
\def\@acmPubDate{\ifcase\@acmMonth\or
  January\or February\or March\or April\or May\or June\or
  July\or August\or September\or October\or November\or
  December\fi~\@acmYear}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmPrice}
%   The price
%    \begin{macrocode}
\def\acmPrice#1{\def\@acmPrice{#1}}
\acmPrice{15.00}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmISBN}
% \changes{v1.04}{2016/04/26}{Name change by Matthew Fluet}
%   The book isbn
%    \begin{macrocode}
\def\acmISBN#1{\def\@acmISBN{#1}}
\acmISBN{978-x-xxxx-xxxx-x/YY/MM}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\acmDOI}
% \changes{v1.04}{2016/04/26}{Name change by Matthew Fluet}
%   The paper doi
%    \begin{macrocode}
\def\acmDOI#1{\def\@acmDOI{#1}}
\acmDOI{10.1145/nnnnnnn.nnnnnnn}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@ACM@badge}
% \changes{v1.06}{2016/05/01}{Added macro}
%   Whether to print badge.  Note that either left or right badge
%   triggers it:
%    \begin{macrocode}
\newif\if@ACM@badge
\@ACM@badgefalse
%    \end{macrocode}
%   
% \end{macro}
%
% \begin{macro}{\@ACM@badge@width}
% \changes{v1.06}{2016/05/01}{Added macro}
%   The width of the badge
%    \begin{macrocode}
\newlength\@ACM@badge@width
\setlength\@ACM@badge@width{5pc}
%    \end{macrocode}
%   
% \end{macro}
%
%
% \begin{macro}{\@ACM@title@width}
% \changes{v1.06}{2016/05/01}{Added macro}
%   The width of the badge
%    \begin{macrocode}
\newlength\@ACM@title@width
%    \end{macrocode}
%   
% \end{macro}
%
%
% \begin{macro}{\@ACM@badge@skip}
% \changes{v1.06}{2016/05/01}{Added macro}
%   The space between the badge and the title
%    \begin{macrocode}
\newlength\@ACM@badge@skip
\setlength\@ACM@badge@skip{1pc}
%    \end{macrocode}
%   
% \end{macro}
%
% \begin{macro}{\acmBadgeR}
% \changes{v1.06}{2016/05/01}{Added macro}
%   Setting the right badge
%    \begin{macrocode}
\newcommand\acmBadgeR[2][]{\@ACM@badgetrue
  \def\@acmBadgeR@url{#1}%
  \def\@acmBadgeR@image{#2}}
\def\@acmBadgeR@url{}
\def\@acmBadgeR@image{}
%    \end{macrocode}
%   
% \end{macro}
%
% \begin{macro}{\acmBadgeL}
% \changes{v1.06}{2016/05/01}{Added macro}
%   Setting the left badge
%    \begin{macrocode}
\newcommand\acmBadgeL[2][]{\@ACM@badgetrue
  \def\@acmBadgeL@url{#1}%
  \def\@acmBadgeL@image{#2}}
\def\@acmBadgeL@url{}
\def\@acmBadgeL@image{}
%    \end{macrocode}
%   
% \end{macro}
%
%
% \begin{macro}{\startPage}
%   The start page of the paper
%    \begin{macrocode}
\def\startPage#1{\def\@startPage{#1}}
\startPage{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\terms}
%   Terms are mostly obsolete, we use CCS now.  Still it makes
%   sense to keep them for compatibility.
%    \begin{macrocode}
\def\terms#1{\def\@terms{#1}}
\terms{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\keywords}
%   Keywords are mostly obsolete, we use CCS now.  Still it makes
%   sense to keep them for compatibility.
%    \begin{macrocode}
\def\keywords#1{\def\@keywords{#1}}
\keywords{}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{abstract}
%   Amsart puts |abstract| in the box.  Since we do not know whether
%   we will use two column mode, we prefer to save the text
%    \begin{macrocode}
\renewenvironment{abstract}{\Collect@Body\@saveabstract}{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@saveabstract}
%   And saving the abstract
%    \begin{macrocode}
\long\def\@saveabstract#1{\long\gdef\@abstract{#1}}
\@saveabstract{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@lempty}
%   The long version of \cs{@empty} (to compare with \cs{@abstract})
%    \begin{macrocode}
\long\def\@lempty{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@ACM@printccs}
%   Whether to print CCS
%    \begin{macrocode}
\define@boolkey+{@ACM@topmatter@}[@ACM@]{printcss}[true]{%
  \if@ACM@printcss
    \ClassInfo{\@classname}{Printing CSS}%
  \else
    \ClassInfo{\@classname}{Suppressing CSS}%
  \fi}{\ClassError{\@classname}{printcss must be true or false}}
%    \end{macrocode}
%
% \end{macro}
% \begin{macro}{\if@ACM@printbib}
%   Whether to print ACM bib
%    \begin{macrocode}
\define@boolkey+{@ACM@topmatter@}[@ACM@]{printbib}[true]{%
  \if@ACM@printcss
    \ClassInfo{\@classname}{Printing bibformat}%
  \else
    \ClassInfo{\@classname}{Suppressing bibformat}%
  \fi}{\ClassError{\@classname}{printbib must be true or false}}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\settopmatter}
%   The usual syntactic sugar
%    \begin{macrocode}
\def\settopmatter#1{\setkeys{@ACM@topmatter@}{#1}}
%    \end{macrocode}
%
% \end{macro}
%
%
% Now the settings
%    \begin{macrocode}
\settopmatter{printcss=true}
\if@ACM@manuscript
  \settopmatter{printbib=false}
\else
  \if@ACM@journal
    \settopmatter{printbib=true}
  \else
    \settopmatter{printbib=false}
  \fi
\fi
%    \end{macrocode}
%
% \begin{macro}{\@received}
%   The container for the paper history
%    \begin{macrocode}
\def\@received{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\received}
%   The \cs{received} command
%    \begin{macrocode}
\newcommand\received[2][]{\def\@tempa{#1}%
  \ifx\@tempa\@empty
    \ifx\@received\@empty
      \gdef\@received{Received #2}%
    \else
      \g@addto@macro{\@received}{; revised #2}%
    \fi
  \else
    \ifx\@received\@empty
      \gdef\@received{#1 #2}%
    \else
      \g@addto@macro{\@received}{; #1 #2}%
    \fi
  \fi}
\AtEndDocument{%
  \ifx\@received\@empty\else
    \par\bigskip\noindent\small\normalfont\@received\par
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
%\subsection{Concepts system}
%\label{sec:concepts}
%
% We exclude |CCSXML| stuff generated by the ACM system:
%    \begin{macrocode}
\RequirePackage{comment}
\excludecomment{CCSXML}
%    \end{macrocode}
%
% \begin{macro}{\@concepts}
%   This is the storage macro for concepts
%    \begin{macrocode}
\let\@concepts\@empty
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\ccsdesc}
%   The first argument is the significance, the second is the
%   concept(s)
%    \begin{macrocode}
\newcommand\ccsdesc[2][100]{%
  \ccsdesc@parse#1~#2~}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\ccsdesc@parse}
%   The parser of the expression |Significance~General~Specific|:
%    \begin{macrocode}
\def\ccsdesc@parse#1~#2~#3~{%
  \expandafter\ifx\csname CCS@#2\endcsname\relax
    \expandafter\gdef\csname CCS@#2\endcsname{\textbullet\textbf{#2} $\to$ }%
  \g@addto@macro{\@concepts}{\csname CCS@#2\endcsname}\fi
  \expandafter\g@addto@macro\expandafter{\csname CCS@#2\endcsname}{%
    \ifnum#1>499\textbf{#3; }\else
    \ifnum#1>299\textit{#3; }\else
    #3; \fi\fi}}
%    \end{macrocode}
%
% \end{macro}
%
%
%\subsection{Copyright system}
%\label{sec:copyright}
%
% This is from |acmcopyright.sty|
%
% \begin{macro}{\if@printcopyright}
%   A flag whether to print copyright symbol
%    \begin{macrocode}
\newif\if@printcopyright
\@printcopyrighttrue
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@printpermission}
%   Whether to print permission block
%    \begin{macrocode}
\newif\if@printpermission
\@printpermissiontrue
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\if@acmowned}
%   Whether ACM ownes the rights to the paper
%    \begin{macrocode}
\newif\if@acmowned
\@acmownedtrue
%    \end{macrocode}
%
% \end{macro}
%
% Keys:
%    \begin{macrocode}
\define@choicekey*{ACM@}{acmcopyrightmode}[%
  \acm@copyrightinput\acm@copyrightmode]{none,acmcopyright,acmlicensed,%
  rightsretained,usgov,usgovmixed,cagov,cagovmixed,%
  licensedusgovmixed,licensedcagovmixed,othergov,licensedothergov}{%
  \@printpermissiontrue
  \@printcopyrighttrue
  \@acmownedtrue
  \ifnum\acm@copyrightmode=0\relax % none
   \@printpermissionfalse
   \@printcopyrightfalse
   \@acmownedfalse
  \fi
  \ifnum\acm@copyrightmode=2\relax % acmlicensed
   \@acmownedfalse
  \fi
  \ifnum\acm@copyrightmode=3\relax % rightsretained
   \@acmownedfalse
  \fi
  \ifnum\acm@copyrightmode=4\relax % usgov
   \@printpermissiontrue
   \@printcopyrightfalse
   \@acmownedfalse
  \fi
  \ifnum\acm@copyrightmode=6\relax % cagov
   \@acmownedfalse
  \fi
  \ifnum\acm@copyrightmode=8\relax % licensedusgovmixed
   \@acmownedfalse
  \fi
  \ifnum\acm@copyrightmode=9\relax % licensedcagovmixed
   \@acmownedfalse
  \fi
  \ifnum\acm@copyrightmode=10\relax % othergov
   \@acmownedtrue
  \fi
  \ifnum\acm@copyrightmode=11\relax % licensedothergov
   \@acmownedfalse
   \@printcopyrightfalse
  \fi}
%    \end{macrocode}
%
% \begin{macro}{\setcopyright}
%   This is the syntactic sugar around setting keys.
%    \begin{macrocode}
\def\setcopyright#1{\setkeys{ACM@}{acmcopyrightmode=#1}}
\setcopyright{acmcopyright}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\@copyrightowner}
%   Here is the owner of the copyright
%    \begin{macrocode}
\def\@copyrightowner{%
  \ifcase\acm@copyrightmode\relax % none
  \or % acmcopyright
  ACM\@.
  \or % acmlicensed
  Copyright held by the owner/author(s). Publication rights licensed to
  ACM\@.
  \or % rightsretained
  Copyright held by the owner/author(s).
  \or % usgov
  \or % usgovmixed
  ACM\@.
  \or % cagov
  Crown in Right of Canada.
  \or %cagovmixed
  ACM\@.
  \or %licensedusgovmixed
  Copyright held by the owner/author(s). Publication rights licensed to
  ACM\@.
  \or %licensedcagovmixed
  Copyright held by the owner/author(s). Publication rights licensed to
  ACM\@.
  \or % othergov
  ACM\@.
  \or % licensedothergov
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@formatdoi}
% \changes{v1.03}{2016/04/22}{Added macro}
%   Print a clickable doi
%    \begin{macrocode}
\def\@formatdoi#1{\url{http://dx.doi.org/#1}}
%    \end{macrocode}
%   
% \end{macro}
%
% \begin{macro}{\@copyrightpermission}
%   The canned permission block.
%    \begin{macrocode}
\def\@copyrightpermission{%
  \ifcase\acm@copyrightmode\relax % none
  \or % acmcopyright
   Permission to make digital or hard copies of all or part of this
   work for personal or classroom use is granted without fee provided
   that copies are not made or distributed for profit or commercial
   advantage and that copies bear this notice and the full citation on
   the first page. Copyrights for components of this work owned by
   others than ACM must be honored. Abstracting with credit is
   permitted. To copy otherwise, or republish, to post on servers or to
   redistribute to lists, requires prior specific permission
   and\hspace*{.5pt}/or  a fee. Request permissions from
   permissions@acm.org.
  \or % acmlicensed
   Permission to make digital or hard copies of all or part of this
   work for personal or classroom use is granted without fee provided
   that copies are not made or distributed for profit or commercial
   advantage and that copies bear this notice and the full citation on
   the first page. Copyrights for components of this work owned by
   others than the author(s) must be honored. Abstracting with credit
   is permitted.  To copy otherwise, or republish, to post on servers
   or to  redistribute to lists, requires prior specific permission
   and\hspace*{.5pt}/or  a fee. Request permissions from
   permissions@acm.org.
  \or % rightsretained
   Permission to make digital or hard copies of part or all of this work
   for personal or classroom use is granted without fee provided that
   copies are not made or distributed for profit or commercial advantage
   and that copies bear this notice and the full citation on the first
   page. Copyrights for third-party components of this work must be
   honored. For all other uses, contact the
   owner\hspace*{.5pt}/author(s).
  \or % usgov
   This paper is authored by an employee(s) of the United States
   Government and is in the public domain. Non-exclusive copying or
   redistribution is allowed, provided that the article citation is
   given and the authors and agency are clearly identified as its
   source.
  \or % usgovmixed
   ACM acknowledges that this contribution was authored or co-authored
   by an employee, or contractor of the national government. As such,
   the Government retains a nonexclusive, royalty-free right to
   publish or reproduce this article, or to allow others to do so, for
   Government purposes only. Permission to make digital or hard copies
   for personal or classroom use is granted. Copies must bear this
   notice and the full citation on the first page. Copyrights for
   components of this work owned by others than ACM must be
   honored. To copy otherwise, distribute, republish, or post,
   requires prior specific permission and\hspace*{.5pt}/or a
   fee. Request permissions from permissions@acm.org.
  \or % cagov
   This article was authored by employees of the Government of Canada.
   As such, the Canadian government retains all interest in the
   copyright to this work and grants to ACM a nonexclusive,
   royalty-free right to publish or reproduce this article, or to allow
   others to do so, provided that clear attribution is given both to
   the authors and the Canadian government agency employing them.
   Permission to make digital or hard copies for personal or classroom
   use is granted. Copies must bear this notice and the full citation
   on the first page.  Copyrights for components of this work owned by
   others than the Canadain Government must be honored. To copy
   otherwise, distribute, republish, or post, requires prior specific
   permission and\hspace*{.5pt}/or a fee. Request permissions from
   permissions@acm.org.
  \or % cagovmixed
   ACM acknowledges that this contribution was co-authored by an
   affiliate of the national government of Canada. As such, the Crown
   in Right of Canada retains an equal interest in the copyright.
   Reprints must include clear attribution to ACM and the author's
   government agency affiliation.  Permission to make digital or hard
   copies for personal or classroom use is granted.  Copies must bear
   this notice and the full citation on the first page. Copyrights for
   components of this work owned by others than ACM must be honored.
   To copy otherwise, distribute, republish, or post, requires prior
   specific permission and\hspace*{.5pt}/or a fee. Request permissions
   from permissions@acm.org.
  \or % licensedusgovmixed
   Publication rights licensed to ACM\@. ACM acknowledges that this
   contribution was authored or co-authored by an employee, contractor
   or affiliate of the United States government. As such, the
   Government retains a nonexclusive, royalty-free right to publish or
   reproduce this article, or to allow others to do so, for Government
   purposes only.
  \or % licensedcagovmixed
   Publication rights licensed to ACM\@. ACM acknowledges that this
   contribution was authored or co-authored by an employee, contractor
   or affiliate of the national government of Canada. As such, the
   Government retains a nonexclusive, royalty-free right to publish or
   reproduce this article, or to allow others to do so, for Government
   purposes only.
  \or % othergov
   ACM acknowledges that this contribution was authored or co-authored
   by an employee, contractor or affiliate of a national government. As
   such, the Government retains a nonexclusive, royalty-free right to
   publish or reproduce this article, or to allow others to do so, for
   Government purposes only.
  \or % licensedothergov
   Publication rights licensed to ACM\@. ACM acknowledges that this
   contribution was authored or co-authored by an employee, contractor
   or affiliate of a national government. As such, the Government
   retains a nonexclusive, royalty-free right to publish or reproduce
   this article, or to allow others to do so, for Government purposes
   only.
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
%
%
%
% \begin{macro}{\copyrightyear}
%   By default, the copyright year is the same as \cs{acmYear}, but
%   one can override this:
%    \begin{macrocode}
\def\copyrightyear#1{\def\@copyrightyear{#1}}
\copyrightyear{\@acmYear}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@teaserfigures}
%   The teaser figures container
%    \begin{macrocode}
\def\@teaserfigures{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{teaserfigure}
%   The teaser figure
%    \begin{macrocode}
\newenvironment{teaserfigure}{\Collect@Body\@saveteaser}{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@saveteaser}
%   Saving the teaser
%    \begin{macrocode}
\long\def\@saveteaser#1{\g@addto@macro\@teaserfigures{\@teaser{#1}}}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\thanks}
%   We redefine |amsart| \cs{thanks}, so the |anonymous| key works
%    \begin{macrocode}
\renewcommand{\thanks}[1]{%
  \@ifnotempty{#1}{%
    \if@ACM@anonymous
      \g@addto@macro\thankses{\thanks{A note}}%
   \else
    \g@addto@macro\thankses{\thanks{#1}}%
   \fi}}
%    \end{macrocode}
%
% \end{macro}
%
% \subsection{Typesetting top matter}
% \label{sec:makefile}
%
% \begin{macro}{\mktitle@bx}
%   Some of our formats use two column design, some use one column
%   one.  In all cases we use wide title.  Thus we typeset the top
%   matter in a special box to be use in the construction
%   \cs{@twocolumn}\oarg{box}.
%    \begin{macrocode}
\newbox\mktitle@bx
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\maketitle}
% \changes{v1.03}{2016/04/22}{Added special case of authorversion}
% \changes{v1.07}{2016/05/03}{Corrected a bug with abstract footnotes}
% \changes{v1.07}{2016/05/03}{Corrected a bug with permssion and
% footnotes order}
%   The (in)famous \cs{maketitle}.  Note that in sigchi-a mode authors
%   are \emph{not} in the title box.
%    \begin{macrocode}
\def\maketitle{%
  \if@ACM@anonymous
    % Anonymize omission of \author-s
    \ifnum\num@authors=0\author{}\fi
  \fi
  \begingroup
  \let\@footnotemark\@footnotemark@nolink
  \let\@footnotetext\@footnotetext@nolink
  \renewcommand\thefootnote{\@fnsymbol\c@footnote}%
  \@topnum\z@ % this prevents figures from falling at the top of page
              % 1
  \hsize=\textwidth
  \def\@makefnmark{\hbox{\@textsuperscript{\@thefnmark}}}
  \@mktitle\if@ACM@sigchiamode\else\@mkauthors\fi\@mkteasers
  \@printtopmatter
  \if@ACM@sigchiamode\@mkauthors\fi
  \setcounter{footnote}{0}%
  \def\@makefnmark{\hbox{\@textsuperscript{\normalfont\@thefnmark}}}
  \@titlenotes
  \@subtitlenotes
  \@authornotes
  \let\@makefnmark\relax  \let\@thefnmark\relax
  \let\@makefntext\noindent
  \ifx\@empty\thankses\else
    \@footnotetext{\def\par{\let\par\@par}\parindent\z@\@setthanks}%
  \fi
  \footnotetextcopyrightpermission{\parindent\z@\parskip0.1\baselineskip
  \if@ACM@authorversion\else
    \if@printpermission\@copyrightpermission\par\fi
  \fi
  \if@ACM@manuscript\else
    \if@ACM@journal\else % Print the conference short name
      {\itshape \acmConference@shortname, \acmConference@venue}\par
    \fi
  \fi
  \if@printcopyright
    \copyright\ \@copyrightyear\ \@copyrightowner\
  \else
    \@copyrightyear.\
  \fi
  \if@ACM@manuscript
    Manuscript submitted to ACM\\
  \else
    \if@ACM@authorversion
        This is the author's version of the work. It is posted here for
        your personal use. Not for redistribution. The definitive Version
        of Record was published in 
        \if@ACM@journal
          \emph{\@journalName}%
        \else
          \emph{Proceedings of \acmConference@name, \acmConference@date}%
        \fi
        \ifx\@acmDOI\@empty
        .
        \else
          , \@formatdoi{\@acmDOI}.
        \fi\\
      \else
        \if@ACM@journal
          \@permissionCodeOne/\@acmYear/\@acmMonth-ART\@acmArticle\
          \$\@acmPrice\\
        \else % Conference
           \@acmISBN
           \ifx\@acmPrice\@empty.\else\dots\$\@acmPrice\fi\\
        \fi
      \fi
    \fi
    DOI: \nolinkurl{\@acmDOI}}%
  \endgroup
  \setcounter{footnote}{0}%
  \@mkabstract
  \if@ACM@printcss
    \ifx\@concepts\@empty\else\bgroup
      {\@specialsection{CCS Concepts}%
         \@concepts\par}\egroup
     \fi
   \fi
   \if\@terms\@empty\else\bgroup
      {\@specialsection{General Terms}%
         \@terms\par}\egroup
   \fi
   \ifx\@keywords\@empty\else\bgroup
      {\if@ACM@journal
         \@specialsection{Additional Key Words and Phrases}%
       \else
         \@specialsection{Keywords}%
       \fi
         \@keywords}\par\egroup
   \fi
  \andify\authors
  \andify\shortauthors
  \global\let\authors=\authors
  \global\let\shortauthors=\shortauthors
  \if@ACM@printbib
     \@mkbibcitation
  \fi
  \hypersetup{pdfauthor={\authors},
    pdftitle={\@title}, pdfkeywords={\@concepts}}%
  \@printendtopmatter
  \@afterindentfalse
  \@afterheading
}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@specialsection}
%   This macro starts section for proceedings and uses small for journals
%    \begin{macrocode}
\def\@specialsection#1{%
  \ifcase\ACM@format@nr
  \relax % manuscript
    \par\medskip\small\noindent#1: %
  \or % acmsmall
    \par\medskip\small\noindent#1: %
  \or % acmlarge
    \par\medskip\small\noindent#1: %
  \or % acmtog
    \par\medskip\small\noindent#1: %
  \or % sigconf
    \section*{#1}%
  \or % siggraph
    \section*{#1}%
  \or % sigplan
    \paragraph*{#1}%
  \or % sigchi
    \section*{#1}%
  \or % sigchi-a
    \section*{#1}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\@printtopmatter}
% \changes{v1.06}{2016/05/01}{Added processing badges}
%   The printing of top matter starts the new page, and uses the given
%   title box.  Note that for sigchi-a we print badges here rather
%   than in \cs{mktitle} since we want them on the margins.
%    \begin{macrocode}
\def\@printtopmatter{%
  \ifx\@startPage\@empty
     \gdef\@startPage{1}%
  \else
     \setcounter{page}{\@startPage}%
  \fi
  \thispagestyle{firstpagestyle}%
  \noindent
  \ifcase\ACM@format@nr
  \relax % manuscript
    \box\mktitle@bx\par
    \noindent\hrulefill\par
  \or % acmsmall
    \box\mktitle@bx\par
    \noindent\hrulefill\par
  \or % acmlarge
    \box\mktitle@bx\par
    \noindent\hrulefill\par
  \or % acmtog
    \twocolumn[\box\mktitle@bx]%
  \or % sigconf
    \twocolumn[\box\mktitle@bx]%
  \or % siggraph
    \twocolumn[\box\mktitle@bx]%
  \or % sigplan
    \twocolumn[\box\mktitle@bx]%
  \or % sigchi
    \twocolumn[\box\mktitle@bx]%
  \or % sigchi-a
    \par\box\mktitle@bx\par\bigskip
    \if@ACM@badge
       \marginpar{\noindent
         \ifx\@acmBadgeL@image\@empty\else
           \href{\@acmBadgeL@url}{%
             \includegraphics[width=\@ACM@badge@width]{\@acmBadgeL@image}}%
            \hskip\@ACM@badge@skip
          \fi
         \ifx\@acmBadgeR@image\@empty\else
           \href{\@acmBadgeR@url}{%
             \includegraphics[width=\@ACM@badge@width]{\@acmBadgeR@image}}%
          \fi}%
    \fi
  \fi
}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@mktitle}
%   The title of the article
%    \begin{macrocode}
\def\@mktitle{%
  \ifcase\ACM@format@nr
  \relax % manuscript
    \@mktitle@i
  \or % acmsmall
    \@mktitle@i
  \or % acmlarge
    \@mktitle@i
  \or % acmtog
    \@mktitle@i
  \or % sigconf
    \@mktitle@iii
  \or % siggraph
    \@mktitle@iii
  \or % sigplan
    \@mktitle@iii
  \or % sigchi
    \@mktitle@iii
  \or % sigchi-a
    \@mktitle@iv
  \fi
}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@titlefont}
% \changes{v1.06}{2016/05/01}{Added macro}
%   The font to typeset title
%    \begin{macrocode}
\def\@titlefont{%
  \ifcase\ACM@format@nr
  \relax % manuscript
    \LARGE\bfseries\sffamily
  \or % acmsmall
    \LARGE\bfseries\sffamily
  \or % acmlarge
    \LARGE\bfseries\sffamily
  \or % acmtog
    \Huge\sffamily
  \or % sigconf
    \Huge\sffamily\bfseries
  \or % siggraph
    \Huge\sffamily\bfseries
  \or % sigplan
    \Huge\bfseries
  \or % sigchi
    \Huge\sffamily\bfseries
  \or % sigchi-a
     \Huge\bfseries
  \fi}
%    \end{macrocode}
%   
% \end{macro}
%
% \begin{macro}{\@subtitlefont}
% \changes{v1.06}{2016/05/01}{Added macro}
%   The font to typeset title
%    \begin{macrocode}
\def\@subtitlefont{%
  \ifcase\ACM@format@nr
  \relax % manuscript
    \mdseries
  \or % acmsmall
    \mdseries
  \or % acmlarge
    \mdseries
  \or % acmtog
     \LARGE
  \or % sigconf
     \LARGE\mdseries
  \or % siggraph
     \LARGE\mdseries
  \or % sigplan
     \LARGE\mdseries
  \or % sigchi
     \LARGE\mdseries
  \or % sigchi-a
     \mdseries
  \fi}
%    \end{macrocode}
%   
% \end{macro}
%
% \begin{macro}{\@mktitle@i}
% \changes{v1.06}{2016/05/01}{Made generic}
% \changes{v1.06}{2016/05/01}{Added processing badges}
%   The version of \cs{mktitle} for most journals
%    \begin{macrocode}
\def\@mktitle@i{\hsize=\textwidth
  \@ACM@title@width=\hsize
  \ifx\@acmBadgeL@image\@empty\else
    \advance\@ACM@title@width by -\@ACM@badge@width
    \advance\@ACM@title@width by -\@ACM@badge@skip
  \fi
  \ifx\@acmBadgeR@image\@empty\else
    \advance\@ACM@title@width by -\@ACM@badge@width
    \advance\@ACM@title@width by -\@ACM@badge@skip
  \fi
  \setbox\mktitle@bx=\vbox{\noindent\@titlefont
    \ifx\@acmBadgeL@image\@empty\else
      \raisebox{-.5\baselineskip}[\z@][\z@]{\href{\@acmBadgeL@url}{%
          \includegraphics[width=\@ACM@badge@width]{\@acmBadgeL@image}}}%
      \hskip\@ACM@badge@skip
    \fi
    \parbox[t]{\@ACM@title@width}{\raggedright
      \@titlefont\noindent
      \@title
  \ifx\@subtitle\@empty\else
    \par\noindent{\@subtitlefont\@subtitle}
  \fi}%
  \ifx\@acmBadgeR@image\@empty\else
    \hskip\@ACM@badge@skip
    \raisebox{-.5\baselineskip}[\z@][\z@]{\href{\@acmBadgeR@url}{%
        \includegraphics[width=\@ACM@badge@width]{\@acmBadgeR@image}}}%
  \fi
  \par\bigskip}}%
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@mktitle@ii}
% \changes{v1.06}{2016/05/01}{Now this macro is obsolete}
%   The version of \cs{mktitle} for TOG.  Since v1.06 is subsumed by
%   the \cs{mktitle@i} macro
% \end{macro}
%
%
% \begin{macro}{\@mktitle@iii}
% \changes{v1.06}{2016/05/01}{Made more generic}
% \changes{v1.06}{2016/05/01}{Added processing badges}
%   The version of \cs{@mktitle} for sigproc.  Note that since the
%   title is centered, we leave the space for the left badge even if
%   only the right badge is defined.
%    \begin{macrocode}
\def\@mktitle@iii{\hsize=\textwidth
    \setbox\mktitle@bx=\vbox{\@titlefont\centering
      \@ACM@title@width=\hsize
      \if@ACM@badge
        \advance\@ACM@title@width by -2\@ACM@badge@width
        \advance\@ACM@title@width by -2\@ACM@badge@skip
        \parbox[b]{\@ACM@badge@width}{\strut
          \ifx\@acmBadgeL@image\@empty\else
            \raisebox{-.5\baselineskip}[\z@][\z@]{\href{\@acmBadgeL@url}{%
                \includegraphics[width=\@ACM@badge@width]{\@acmBadgeL@image}}}%
          \fi}%
        \hskip\@ACM@badge@skip
      \fi
      \parbox[t]{\@ACM@title@width}{\centering\@titlefont
        \@title
        \ifx\@subtitle\@empty\else
          \par\noindent{\@subtitlefont\@subtitle}
        \fi
      }%
      \if@ACM@badge
        \hskip\@ACM@badge@skip
        \parbox[b]{\@ACM@badge@width}{\strut
          \ifx\@acmBadgeR@image\@empty\else
            \raisebox{-.5\baselineskip}[\z@][\z@]{\href{\@acmBadgeR@url}{%
                \includegraphics[width=\@ACM@badge@width]{\@acmBadgeR@image}}}%
          \fi}%
      \fi
      \par\bigskip}}%
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\@mktitle@iv}
% \changes{v1.06}{2016/05/01}{Made more generic}
%   The version of \cs{@mktitle} for sigchi-a
%    \begin{macrocode}
\def\@mktitle@iv{\hsize=\textwidth
    \setbox\mktitle@bx=\vbox{\raggedright\leftskip5pc\@titlefont
      \noindent\leavevmode\leaders\hrule height 2pt\hfill\kern0pt\par
      \noindent\@title
     \ifx\@subtitle\@empty\else
       \par\noindent\@subtitlefont\@subtitle
     \fi
     \par\bigskip}}%
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\@mkauthors}
%   Typesetting authors
%    \begin{macrocode}
\def\@mkauthors{\begingroup
  \hsize=\textwidth
  \ifcase\ACM@format@nr
  \relax % manuscript
    \@mkauthors@i
  \or % acmsmall
    \@mkauthors@i
  \or % acmlarge
    \@mkauthors@i
  \or % acmtog
    \@mkauthors@ii
  \or % sigconf
    \@mkauthors@iii
  \or % siggraph
    \@mkauthors@iii
  \or % sigplan
    \@mkauthors@iii
  \or % sigchi
    \@mkauthors@iii
  \or % sigchi-a
    \@mkauthors@iv
  \fi
  \endgroup
}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@authorfont}
%   Somehow different conferences use different fonts for author
%   names.  Why?
%    \begin{macrocode}
\def\@authorfont{\Large\sffamily}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@affiliationfont}
%   Font for affiliations
%    \begin{macrocode}
\def\@affiliationfont{\normalsize\normalfont}
%    \end{macrocode}
% \end{macro}
%
% Adjusting fonts for different formats
%    \begin{macrocode}
\ifcase\ACM@format@nr
\relax % manuscript
\or % acmsmall
\or % acmlarge
\or % acmtog
  \def\@authorfont{\LARGE\sffamily}
  \def\@affiliationfont{\large}
\or % sigconf
  \def\@authorfont{\LARGE}
  \def\@affiliationfont{\large}
\or % siggraph
  \def\@authorfont{\normalsize\normalfont}
  \def\@affiliationfont{\normalsize\normalfont}
\or % sigplan
  \def\@authorfont{\Large\normalfont}
  \def\@affiliationfont{\normalsize\normalfont}
\or % sigchi
  \def\@authorfont{\bfseries}
  \def\@affiliationfont{\mdseries}
\or % sigchi-a
  \def\@authorfont{\bfseries}
  \def\@affiliationfont{\mdseries}
\fi
%    \end{macrocode}
%
% \begin{macro}{\@mkauthors@i}
%   This is version used in most formats.  Note that \cs{and} between
%   authors with the same affiliation becomes \verb*| and |:
%    \begin{macrocode}
\def\@mkauthors@i{%
  \def\@currentauthors{}%
  \def\and{%
    \andify\@currentauthors\par\noindent
    \@currentauthors\def\@currentauthors{}}%
  \def\@author##1{%
    \ifx\@currentauthors\@empty
      \gdef\@currentauthors{\@authorfont\MakeUppercase{##1}}%
    \else
       \g@addto@macro{\@currentauthors}{\and\MakeUppercase{##1}}%
    \fi
    \def\and{}}%
  \def\email##1##2{}%
  \def\affiliation##1##2{%
    \ifx\@currentauthors\@empty\else
      \andify\@currentauthors\par\noindent\@currentauthors
    \fi
    \def\@currentauthors{}\def\@tempa{##2}\ifx\@tempa\@empty\else
    \unskip, {\@affiliationfont##2}\fi\def\and{\par\noindent}}%
  \global\setbox\mktitle@bx=\vbox{\noindent\box\mktitle@bx\par\medskip
    \noindent\addresses\andify\@currentauthors\par\noindent\@currentauthors\par\medskip}%
}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@mkauthors@ii}
%   This is version used in acmtog.  A more vertical design
%    \begin{macrocode}
\def\@mkauthors@ii{\par\medskip
  \def\@currentauthors{}%
  \def\and{}%
  \def\@author##1{%
    \ifx\@currentauthors\@empty
      \gdef\@currentauthors{\@authorfont
      \MakeUppercase{##1}}%
    \else
      \g@addto@macro{\@currentauthors}{\and\MakeUppercase{##1}}%
    \fi\def\and{}}%
  \def\email##1##2{}%
  \def\affiliation##1##2{%
    \ifx\@currentauthors\@empty\else
      \andify\@currentauthors\par\noindent\@currentauthors
    \fi
    \def\@currentauthors{}\def\@tempa{##2}\ifx\@tempa\@empty\else
    \par\noindent{\@affiliationfont##2}\fi
    \def\and{\par\noindent{\@affiliationfont and}\par
      \noindent\def\and{}}}%
  \global\setbox\mktitle@bx=\vbox{\noindent\box\mktitle@bx\par\medskip
    \noindent\addresses\andify\@currentauthors\par\noindent\@currentauthors\par\medskip}%
}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\author@bx}
%   The box to put individual author to
%    \begin{macrocode}
\newbox\author@bx
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\author@bx@wd}
%   The width of the author box
%    \begin{macrocode}
\newdimen\author@bx@wd
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\author@bx@sep}
%   The separation between the author boxes
%    \begin{macrocode}
\newskip\author@bx@sep
\author@bx@sep=1pc\relax
%    \end{macrocode}
%
% \end{macro}
%
%
%
% \begin{macro}{\@mkauthors@iii}
%   The |sigconf| version.  Here we use centered design with each
%   author in a separate box.
%    \begin{macrocode}
\def\@mkauthors@iii{%
%    \end{macrocode}
% First, we need to determine the design of the author strip.  The
% boxes are separated by \cs{author@bx@sep} plus two
% \cs{author@bx@sep} margins.  This means that each box must be of
% width $(\cs{textwidth}-\cs{author@bx@sep})/N-\cs{author@bx@sep}$,
% where $N$ is the number of boxes per row.
%    \begin{macrocode}
  \author@bx@wd=\textwidth\relax
  \advance\author@bx@wd by -\author@bx@sep\relax
  \ifcase\num@authors
  \relax % 0?
  \or  % 1=one author per row
  \or  % 2=two authors per row
     \divide\author@bx@wd by \num@authors\relax
  \or  % 3=three authors per row
     \divide\author@bx@wd by \num@authors\relax
  \or  % 4=two authors per row (!)
     \divide\author@bx@wd by 2\relax
  \else % three authors per row
     \divide\author@bx@wd by 3\relax
  \fi
  \advance\author@bx@wd by -\author@bx@sep\relax
%    \end{macrocode}
% Now, parsing of \cs{addresses}:
%    \begin{macrocode}
  \gdef\@currentauthors{}%
  \gdef\@currentaffiliation{}%
  \def\@author##1{\ifx\@currentauthors\@empty
    \gdef\@currentauthors{\par##1}%
  \else
    \g@addto@macro\@currentauthors{\quad##1}%
  \fi}%
  \def\email##1##2{\ifx\@currentaffiliation\@empty
    \gdef\@currentaffiliation{\nolinkurl{##2}}%
  \else
    \g@addto@macro\@currentaffiliation{\par\nolinkurl{##2}}%
  \fi}%
  \def\affiliation##1##2{\ifx\@currentaffiliation\@empty
    \gdef\@currentaffiliation{##2}%
  \else
    \g@addto@macro\@currentaffiliation{\par##2}%
  \fi}%
%    \end{macrocode}
% Actual typesetting is done by \cs{and} macro
%    \begin{macrocode}
  \def\and{\bgroup\hsize=\author@bx@wd\def\and{\quad}%
    \global\setbox\author@bx=\vtop{\centering
      \@authorfont\@currentauthors\par\@affiliationfont
      \@currentaffiliation}\egroup
    \box\author@bx\hspace{\author@bx@sep}%
    \gdef\@currentauthors{}%
    \gdef\@currentaffiliation{}}%
%    \end{macrocode}
% And here we use it:
%    \begin{macrocode}
  \hsize=\textwidth
  \global\setbox\mktitle@bx=\vbox{\noindent
    \box\mktitle@bx\par\medskip\leavevmode
    \lineskip=1pc\relax\centering\hspace*{-1em}%
    \addresses\and\par\bigskip}}
%    \end{macrocode}
%
% \end{macro}
%
%
% \begin{macro}{\@mkauthors@iv}
%   The |sigchia| version.  Now we put
%   authors in the main text, and no more than 2 authors per line.
%    \begin{macrocode}
\def\@mkauthors@iv{%
%    \end{macrocode}
% First, we need to determine the design of the author strip.  The
% boxes are separated by \cs{author@bx@sep} plus two
% \cs{author@bx@sep} margins.  This means that each box must be of
% width $(\cs{textwidth}-\cs{author@bx@sep})/N-\cs{author@bx@sep}$,
% where $N$ is the number of boxes per row.
%    \begin{macrocode}
  \author@bx@wd=\columnwidth\relax
  \advance\author@bx@wd by -\author@bx@sep\relax
  \ifcase\num@authors
  \relax % 0?
  \or  % 1=one author per row
  \else  % 2=two authors per row
     \divide\author@bx@wd by 2\relax
  \fi
  \advance\author@bx@wd by -\author@bx@sep\relax
%    \end{macrocode}
% Now, parsing of \cs{addresses}:
%    \begin{macrocode}
  \gdef\@currentauthors{}%
  \gdef\@currentaffiliation{}%
  \def\@author##1{\ifx\@currentauthors\@empty
    \gdef\@currentauthors{\par##1}%
  \else
    \g@addto@macro\@currentauthors{\quad##1}%
  \fi}%
  \def\email##1##2{\ifx\@currentaffiliation\@empty
    \gdef\@currentaffiliation{\nolinkurl{##2}}%
  \else
    \g@addto@macro\@currentaffiliation{\par\nolinkurl{##2}}%
  \fi}%
  \def\affiliation##1##2{\ifx\@currentaffiliation\@empty
    \gdef\@currentaffiliation{##2}%
  \else
    \g@addto@macro\@currentaffiliation{\par##2}%
  \fi}%
%    \end{macrocode}
% Actual typesetting is done by \cs{and} macro
%    \begin{macrocode}
  \def\and{\bgroup\hsize=\author@bx@wd\def\and{\quad}%
    \global\setbox\author@bx=\vtop{\raggedright
      \@authorfont\@currentauthors\par\@affiliationfont
      \@currentaffiliation}\egroup
    \box\author@bx\hskip\author@bx@sep
    \gdef\@currentauthors{}%
    \gdef\@currentaffiliation{}}%
%    \end{macrocode}
% And here we use it:
%    \begin{macrocode}
    \bgroup\hsize=\columnwidth
    \par\raggedright\leftskip=\z@
    \lineskip=1pc\noindent\addresses\and\par\bigskip\egroup}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@authornotemark}
%   Adding footnotemark to authors
%    \begin{macrocode}
\def\@authornotemark{\g@addto@macro\@currentauthors{\footnotemark}}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@mkteasers}
%   Typesetting teasers
%    \begin{macrocode}
\def\@mkteasers{%
  \ifx\@teaserfigures\@empty\else
    \def\@teaser##1{\par\bigskip\bgroup
      \captionsetup{type=figure}##1\egroup\par}
    \global\setbox\mktitle@bx=\vbox{\noindent\box\mktitle@bx\par
    \noindent\@teaserfigures\par\medskip}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@setaddresses}
%   This is an |amsart| macro, which we do not need.
%    \begin{macrocode}
\def\@setaddresses{}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@mkabstract}
%   Typesetting abstract
%    \begin{macrocode}
\def\@mkabstract{\bgroup
  \ifx\@abstract\@lempty\else
  {\if@ACM@journal
       \small\noindent
    \else
      \section*{Abstract}%
    \fi
      \@abstract\par}%
  \fi\egroup}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@mkbibcitation}
%   Print bibcitation format
%    \begin{macrocode}
\def\@mkbibcitation{\bgroup
  \par\medskip\small\noindent{\bfseries ACM Reference format:}\par
  \noindent\authors. \@acmYear. \@title. \textit{\@journalNameShort}
  \@acmVolume, \@acmNumber, Article~\@acmArticle\
  (\@acmPubDate), \ref{TotPages}~pages.\par
  \noindent DOI: \nolinkurl{\@acmDOI}
\par\egroup}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@printendtopmatter}
%   End the top matter
%    \begin{macrocode}
\def\@printendtopmatter{\par\medskip
  \ifcase\ACM@format@nr
  \relax % manuscript
    \noindent\hrulefill\par\medskip
  \or % acmsmall
    \noindent\hrulefill\par\medskip
  \or % acmlarge
    \noindent\hrulefill\par\medskip
  \or % acmtog
    \par\bigskip
  \or % sigconf
    \par\bigskip
  \or % siggraph
    \par\bigskip
  \or % sigplan
    \par\bigskip
  \or % sigchi
    \par\bigskip
  \or % sigchi-a
  \fi
}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@setthanks}
%   We redefine \cs{\@setthanks} using \cs{long}
%    \begin{macrocode}
\def\@setthanks{\long\def\thanks##1{\par##1\@addpunct.}\thankses}
%    \end{macrocode}
%
% \end{macro}
%
%
%
%\subsection{Headers and Footers}
%\label{sec:head_foot}
%
% We use |fancyhdr| for our headers and footers:
%    \begin{macrocode}
\RequirePackage{fancyhdr}
%    \end{macrocode}
%
% \begin{macro}{\ACM@linecount@bx}
%   This is the box displayed in the review mode
%    \begin{macrocode}
\if@ACM@review
  \newsavebox{\ACM@linecount@bx}
  \savebox{\ACM@linecount@bx}[4em][t]{\parbox[t]{4em}{%
      \newlength\ACM@linecount@bxht\setlength{\ACM@linecount@bxht}{-\baselineskip}
      \@tempcnta\@ne\relax
      \loop{\color{ACMRed}\scriptsize\the\@tempcnta}\\
      \advance\@tempcnta by \@ne
      \addtolength{\ACM@linecount@bxht}{\baselineskip}
      \ifdim\ACM@linecount@bxht<\textheight\repeat}}
\fi
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\ACM@linecount}
%   How to display the box
%    \begin{macrocode}
\def\ACM@linecount{%
  \if@ACM@review
  \begin{picture}(0,0)%
    \put(-26,-22){\usebox{\ACM@linecount@bx}}%
  \end{picture}%
  \fi}
%    \end{macrocode}
%
% \end{macro}
%
%
%
% \begin{macro}{standardpagestyle}
%   The pagestyle for all pages but the first one
%    \begin{macrocode}
\fancypagestyle{standardpagestyle}{%
  \fancyhf{}%
  \renewcommand{\headrulewidth}{\z@}%
  \renewcommand{\footrulewidth}{\z@}%
  \ifcase\ACM@format@nr
  \relax % manuscript
    \fancyhead[RE]{\thepage}%
    \fancyhead[LO]{\ACM@linecount\thepage}%
    \fancyhead[LE]{\ACM@linecount\shortauthors}%
    \fancyhead[RO]{\shorttitle}%
    \fancyfoot[RO,LE]{\footnotesize Manuscript submitted to ACM}%
  \or % acmsmall
    \fancyhead[RE]{\sffamily\@acmArticle:\thepage}%
    \fancyhead[LO]{\ACM@linecount\sffamily\@acmArticle:\thepage}%
    \fancyhead[LE]{\ACM@linecount\sffamily\shortauthors}%
    \fancyhead[RO]{\sffamily\shorttitle}%
    \fancyfoot[RO,LE]{\footnotesize \@journalName, Vol. \@acmVolume, No.
    \@acmNumber, Article \@acmArticle.  Publication date: \@acmPubDate.}%
  \or % acmlarge
    \fancyhead[LE]{\ACM@linecount\sffamily
      \@acmArticle:\thepage\quad\textbullet\quad\shortauthors}%
    \fancyhead[LO]{\ACM@linecount}%
    \fancyhead[RO]{\sffamily
      \shorttitle\quad\textbullet\quad\@acmArticle:\thepage}%
    \fancyfoot[RO,LE]{\footnotesize \@journalName, Vol. \@acmVolume, No.
    \@acmNumber, Article \@acmArticle.  Publication date: \@acmPubDate.}%
  \or % acmtog
    \fancyhead[LE]{\ACM@linecount\sffamily
      \@acmArticle:\thepage\quad\textbullet\quad\shortauthors}%
    \fancyhead[LO]{\ACM@linecount}%
    \fancyhead[RO]{\sffamily
      \shorttitle\quad\textbullet\quad\@acmArticle:\thepage}%
    \fancyfoot[RO,LE]{\footnotesize \@journalName, Vol. \@acmVolume, No.
    \@acmNumber, Article \@acmArticle.  Publication date: \@acmPubDate.}%
  \else % Proceedings
    \fancyfoot[R]{\footnotesize\thepage}%
    \fancyhead[L]{\ACM@linecount}%
  \fi
}
\pagestyle{standardpagestyle}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@folio@wd}
% \begin{macro}{\@folio@ht}
% \begin{macro}{\@folio@voffset}
% \begin{macro}{\@folio@max}
%   Folio blob width, height, offsets and max number
%    \begin{macrocode}
\newdimen\@folio@wd
\@folio@wd=\z@
\newdimen\@folio@ht
\@folio@ht=\z@
\newdimen\@folio@voffset
\@folio@voffset=\z@
\def\@folio@max{1}
\ifcase\ACM@format@nr
\relax % manuscript
\or % acmsmall
  \@folio@wd=45.75pt\relax
  \@folio@ht=1.25in\relax
  \@folio@voffset=.2in\relax
  \def\@folio@max{8}
\or % acmlarge
  \@folio@wd=43.25pt\relax
  \@folio@ht=79pt\relax
  \@folio@voffset=.55in\relax
  \def\@folio@max{10}
\fi
%    \end{macrocode}
%
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\@folioblob}
%   The macro to typeset the folio blob.
%    \begin{macrocode}
\def\@folioblob{\@tempcnta=\@acmArticleSeq\relax
%    \end{macrocode}
% First, we calculate \cs{@acmArticleSeq} modulo \cs{@folio@max}
%    \begin{macrocode}
  \loop
     \ifnum\@tempcnta>\@folio@max\relax
      \advance\@tempcnta by - \@folio@max
   \repeat
%    \end{macrocode}
%
%    \begin{macrocode}
    \advance\@tempcnta by -1\relax
    \@tempdima=\@folio@ht\relax
    \multiply\@tempdima by \the\@tempcnta\relax
    \advance\@tempdima by -\@folio@voffset\relax
    \begin{picture}(0,0)
    \makebox[\z@]{\raisebox{-\@tempdima}{%
        \rlap{%
          \raisebox{-0.45\@folio@ht}[\z@][\z@]{%
            \rule{\@folio@wd}{\@folio@ht}}}%
        \parbox{\@folio@wd}{%
          \centering
          \textcolor{white}{\LARGE\bfseries\sffamily\@acmArticle}}}}
  \end{picture}}

%    \end{macrocode}
%
%
% \end{macro}
%
% \begin{macro}{firstpagestyle}
%   The pagestyle for the first page only.
%    \begin{macrocode}
\fancypagestyle{firstpagestyle}{%
  \fancyhf{}%
  \renewcommand{\headrulewidth}{\z@}%
  \renewcommand{\footrulewidth}{\z@}%
  \ifcase\ACM@format@nr
  \relax % manuscript
    \fancyhead[L]{\ACM@linecount}%
    \fancyfoot[RO,LE]{\small\thepage}%
    \fancyfoot[RE,LO]{\footnotesize Manuscript submitted to ACM}%
  \or % acmsmall
    \fancyfoot[RO,LE]{\footnotesize \@journalName, Vol. \@acmVolume, No.
    \@acmNumber, Article \@acmArticle.  Publication date:
    \@acmPubDate.}%
    \fancyhead[LE]{\ACM@linecount\@folioblob}%
    \fancyhead[LO]{\ACM@linecount}%
    \fancyhead[RO]{\@folioblob}%
    \fancyheadoffset[RO,LE]{0.6\@folio@wd}%
  \or % acmlarge
    \fancyfoot[RO,LE]{\footnotesize \@journalName, Vol. \@acmVolume, No.
    \@acmNumber, Article \@acmArticle.  Publication date:
    \@acmPubDate.}%
    \fancyhead[RO]{\@folioblob}%
    \fancyhead[LE]{\ACM@linecount\@folioblob}%
    \fancyhead[LO]{\ACM@linecount}%
    \fancyheadoffset[RO,LE]{1.4\@folio@wd}%
  \or % acmtog
    \fancyfoot[RO,LE]{\footnotesize \@journalName, Vol. \@acmVolume, No.
    \@acmNumber, Article \@acmArticle.  Publication date:
    \@acmPubDate.}%
    \fancyhead[L]{\ACM@linecount}%
  \else % Conference proceedings
    \fancyhead[L]{\ACM@linecount}%
    \fancyfoot[R]{\footnotesize\thepage}%
  \fi
}
%    \end{macrocode}
%
% \end{macro}
%
%
%\subsection{Sectioning}
%\label{sec:sectioninng}
%
%
%   Sectioning is different for different levels
%    \begin{macrocode}
\renewcommand\section{\@startsection{section}{1}{\z@}%
  {-.75\baselineskip \@plus -2\p@ \@minus -.2\p@}%
  {.25\baselineskip}%
  {\@secfont}}
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%
  {-.75\baselineskip \@plus -2\p@ \@minus -.2\p@}%
  {.25\baselineskip}%
  {\@subsecfont}}
\renewcommand\subsubsection{\@startsection{subsubsection}{3}{10pt}%
  {-.5\baselineskip \@plus -2\p@ \@minus -.2\p@}%
  {-3.5\p@}%
  {\@subsubsecfont\@adddotafter}}
\renewcommand\paragraph{\@startsection{paragraph}{4}{\parindent}%
  {-.5\baselineskip \@plus -2\p@ \@minus -.2\p@}%
  {-3.5\p@}%
  {\@parfont\@adddotafter}}
\renewcommand\part{\@startsection{part}{9}{\z@}%
  {-10\p@ \@plus -4\p@ \@minus -2\p@}%
  {4\p@}%
  {\@parfont}}
%    \end{macrocode}
%
%
% Fonts for sections etc. are different for different formats.  Also,
% some formats use the ugly period after section number (sigh):
%    \begin{macrocode}
\def\@secfont{\sffamily\bfseries\raggedright\MakeUppercase}
\def\@subsecfont{\sffamily\bfseries\raggedright}
\def\@subsubsecfont{\sffamily\itshape}
\def\@parfont{\itshape}
\setcounter{secnumdepth}{3}
\ifcase\ACM@format@nr
\relax % manuscript
\or % acmsmall
\or % acmlarge
 \def\@secfont{\sffamily\large\raggedright\MakeUppercase}
 \def\@subsecfont{\sffamily\large\raggedright}
\or % acmtog
 \def\@secfont{\sffamily\large\raggedright\MakeUppercase}
 \def\@subsecfont{\sffamily\large\raggedright}
\or % sigconf
 \def\@secfont{\bfseries\Large\raggedright\MakeUppercase}
 \def\@subsecfont{\bfseries\Large\raggedright}
\or % siggraph
 \def\@secfont{\bfseries\sffamily\Large\raggedright\MakeUppercase}
 \def\@subsecfont{\bfseries\sffamily\Large\raggedright}
\or % sigplan
 \def\@secfont{\bfseries\Large\raggedright}
 \def\@subsecfont{\bfseries\raggedright}
 \renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%
   {-.75\baselineskip \@plus -2\p@ \@minus -.2\p@}%
   {.25\baselineskip}%
   {\@subsubsecfont}}
 \def\@subsubsecfont{\bfseries\raggedright}
 \renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}%
   {-.5\baselineskip \@plus -2\p@ \@minus -.2\p@}%
   {-3.5\p@}%
   {\@parfont\@addspaceafter}}
 \def\@parfont{\bfseries\itshape}
 \renewcommand\subparagraph{\@startsection{subparagraph}{5}{\z@}%
   {-.5\baselineskip \@plus -2\p@ \@minus -.2\p@}%
   {-3.5\p@}%
   {\@subparfont\@addspaceafter}}
 \def\@subparfont{\itshape}
\or % sigchi
 \setcounter{secnumdepth}{1}
 \def\@secfont{\bfseries\sffamily\raggedright\MakeUppercase}
 \def\@subsecfont{\bfseries\sffamily\raggedright}
\or % sigchi-a
 \setcounter{secnumdepth}{0}
 \def\@secfont{\bfseries\sffamily\raggedright\MakeUppercase}
 \def\@subsecfont{\bfseries\sffamily\raggedright}
\fi
%    \end{macrocode}
%
% \begin{macro}{\@adddotafter}
%   Add punctuation after the command
%    \begin{macrocode}
\def\@adddotafter#1{#1\@addpunct{.}}
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{\@addspaceafter}
%   Add space after the command
%    \begin{macrocode}
\def\@addspaceafter#1{#1\@addpunct{\enspace}}
%    \end{macrocode}
%
% \end{macro}
%
%
%
%
%\subsection{Theorems}
%\label{sec:theorems}
%
%
% \begin{macro}{acmplain}
%   The |acmplain| theorem style
%    \begin{macrocode}
\newtheoremstyle{acmplain}%
  {.5\baselineskip\@plus.2\baselineskip
    \@minus.2\baselineskip}% space above
  {.5\baselineskip\@plus.2\baselineskip
    \@minus.2\baselineskip}% Space below
  {\itshape}% body font
  {\parindent}% indent amount
  {\scshape}% head font
  {.}% punctuation after head
  {.5em}% spacing after head
  {\thmname{#1}\thmnumber{ #2}\thmnote{ (#3)}}% head spec
%    \end{macrocode}
%
% \end{macro}
%
% \begin{macro}{acmdefinition}
%   The |acmdefinition| theorem style
%    \begin{macrocode}
\newtheoremstyle{acmdefinition}%
  {.5\baselineskip\@plus.2\baselineskip
    \@minus.2\baselineskip}% space above
  {.5\baselineskip\@plus.2\baselineskip
    \@minus.2\baselineskip}% Space below
  {\normalfont}% body font
  {\parindent}% indent amount
  {\itshape}% head font
  {.}% punctuation after head
  {.5em}% spacing after head
  {\thmname{#1}\thmnumber{ #2}\thmnote{ \itshape(#3)}}% head spec
%    \end{macrocode}
%
% \end{macro}
%
% The definitions for theorems:
%    \begin{macrocode}
\theoremstyle{acmplain}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{conjecture}[theorem]{Conjecture}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{corollary}[theorem]{Corollary}
\theoremstyle{acmdefinition}
\newtheorem{example}[theorem]{Example}
\newtheorem{definition}[theorem]{Definition}
%    \end{macrocode}
%
%
% \begin{macro}{proof}
%   We want small caps proof name
%    \begin{macrocode}
\renewenvironment{proof}[1][\proofname]{\par
  \pushQED{\qed}%
  \normalfont \topsep6\p@\@plus6\p@\relax
  \trivlist
  \item[\indent\hskip\labelsep
        \scshape
    #1\@addpunct{.}]\ignorespaces
}{%
  \popQED\endtrivlist\@endpefalse
}
%    \end{macrocode}
%
% \end{macro}
%
%
% \subsection{Conditional typesetting}
% \label{sec:conditional}
%
% We use the |comment| package for conditional typesetting:
%    \begin{macrocode}
\if@ACM@screen
  \includecomment{screenonly}
  \excludecomment{printonly}
\else
  \excludecomment{screenonly}
  \includecomment{printonly}
\fi
\if@ACM@anonymous
  \excludecomment{anonsuppress}
\else
  \includecomment{anonsuppress}
\fi
%    \end{macrocode}
%
%
%\subsection{End of Class}
%\label{end}
%
%
%    \begin{macrocode}
\normalsize\normalfont
%</class>
%    \end{macrocode}
%
%\Finale
%\clearpage
%
%\PrintChanges
%\clearpage
%\PrintIndex
%
\endinput
