% SIG-ALTERNATE.CLS - VERSION 2.4

% "COMPATIBLE" WITH THE "ACM_PROC_ARTICLE-SP.CLS" V3.2SP

% Gerald Murray - April 22nd. 2009

%

% ---- Start of 'updates'  ----

%

% Changed $5 fee to $10 - Gerry

% April 22nd. 2009 - Fixed 'Natbib' incompatibility problem - Gerry

% April 22nd. 2009 - Fixed 'Babel' incompatibility problem - Gerry

% April 22nd. 2009 - Inserted various bug-fixes and improvements - Gerry

%

% To produce Type 1 fonts in the document plus allow for 'normal LaTeX accenting' in the critical areas;

% title, author block, section-heads, confname, etc. etc. 

% i.e. the whole purpose of this version update is to NOT resort to 'inelegant accent patches'.

% After much research, three extra .sty packages were added to the the tail (ae, aecompl, aeguill) to solve,

% in particular, the accenting problem(s). We _could_ ask authors (via instructions/sample file) to 'include' these in

% the source .tex file - in the preamble - but if everything is already provided ('behind the scenes' - embedded IN the .cls)

% then this is less work for authors and also makes everything appear 'vanilla'.

% NOTE: all 'patchwork accenting" has been commented out (here) and is no longer 'used' in the sample .tex file (either).

% Gerry June 2007

%

% Patch for accenting in conference name/location. Gerry May 3rd. 2007

% Rule widths changed to .5, author count (>6) fixed, roll-back for Type 3 problem. Gerry March 20th. 2007

% Changes made to 'modernize' the fontnames but esp. for MikTeX users V2.4/2.5 - Nov. 30th. 2006

% Updated the \email definition to allow for its use inside of 'shared affiliations' - Nov. 30th. 2006

% Fixed the 'section number depth value' - Nov. 30th. 2006

%

% Footnotes inside table cells using \minipage (Oct. 2002)

% Georgia fixed bug in sub-sub-section numbering in paragraphs (July 29th. 2002)

% JS/GM fix to vertical spacing before Proofs (July 30th. 2002)

%

% Made the Permission Statement / Conference Info / Copyright Info

% 'user definable' in the source .tex file OR automatic if

% not specified.

%

% Allowance made to switch default fonts between those systems using

% normal/modern font names and those using 'Type 1' or 'Truetype' fonts.

% See LINE NUMBER 255 for details.

% Also provided for enumerated/annotated Corollaries 'surrounded' by

% enumerated Theorems (line 848).

% Gerry November 11th. 1999

%

% ---- End of 'updates' ----

%

\def\fileversion{v2.4}          % for ACM's tracking purposes

\def\filedate{April 22, 2009}    % Gerry Murray's tracking data

\def\docdate {Wednesday 22nd. April 2009} % Gerry Murray (with deltas to doc}

\usepackage{epsfig}

\usepackage{amssymb}

\usepackage{amsmath}

\usepackage{amsfonts}

% Need this for accents in Arial/Helvetica

%\usepackage[T1]{fontenc}  % Gerry March 12, 2007 - causes Type 3 problems (body text)

%\usepackage{textcomp}

%

% SIG-ALTERNATE DOCUMENT STYLE

% G.K.M. Tobin August-October 1999

%    adapted from ARTICLE document style by Ken Traub, Olin Shivers

%    also using elements of esub2acm.cls

% HEAVILY MODIFIED, SUBSEQUENTLY, BY GERRY MURRAY 2000

% ARTICLE DOCUMENT STYLE -- Released 16 March 1988

%    for LaTeX version 2.09

% Copyright (C) 1988 by Leslie Lamport

%

%

%%% sig-alternate.cls is an 'ALTERNATE' document style for producing

%%% two-column camera-ready pages for ACM conferences.

%%% THIS FILE DOES NOT STRICTLY ADHERE TO THE SIGS (BOARD-ENDORSED)

%%% PROCEEDINGS STYLE. It has been designed to produce a 'tighter'

%%% paper in response to concerns over page budgets.

%%% The main features of this style are:

%%%

%%% 1)  Two columns.

%%% 2)  Side and top margins of 4.5pc, bottom margin of 6pc, column gutter of

%%%     2pc, hence columns are 20pc wide and 55.5pc tall.  (6pc =3D 1in, approx)

%%% 3)  First page has title information, and an extra 6pc of space at the

%%%     bottom of the first column for the ACM copyright notice.

%%% 4)  Text is 9pt on 10pt baselines; titles (except main) are 9pt bold.

%%%

%%%

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

%%%

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

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

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

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

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

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

%%%     and page headings are all forbidden.

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

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

%%%

%

%%% Copyright Space:

%%% This style automatically reserves 1" blank space at the bottom of page 1/

%%% column 1.  This space can optionally be filled with some text using the

%%% \toappear{...} command.  If used, this command must be BEFORE the \maketitle

%%% command.  If this command is defined AND [preprint] is on, then the

%%% space is filled with the {...} text (at the bottom); otherwise, it is

%%% blank.  If you use \toappearbox{...} instead of \toappear{...} then a

%%% box will be drawn around the text (if [preprint] is on).

%%%

%%% A typical usage looks like this:

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

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

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

%%% version.

%%%

%%% WARNING:

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

%%% true positions a few pixels. This may be noticeable with the 9pt sans-serif

%%% bold font used for section headers.

%%% You may turn this hackery off via the -e option:

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

%%%

\typeout{Document Class 'sig-alternate' <22nd. April '09>.  Modified by G.K.M. Tobin/Gerry Murray}

\typeout{Based in part upon document Style `acmconf' <22 May 89>. Hacked 4/91 by}

\typeout{shivers@cs.cmu.edu, 4/93 by theobald@cs.mcgill.ca}

\typeout{Excerpts were taken from (Journal Style) 'esub2acm.cls'.}

\typeout{****** Bugs/comments/suggestions/technicalities to Gerry Murray -- murray@hq.acm.org ******}

\typeout{Questions on the style, SIGS policies, etc. to Adrienne Griscti griscti@acm.org}

\oddsidemargin 4.5pc

\evensidemargin 4.5pc

\advance\oddsidemargin by -1in  % Correct for LaTeX gratuitousness

\advance\evensidemargin by -1in % Correct for LaTeX gratuitousness

\marginparwidth 0pt             % Margin pars are not allowed.

\marginparsep 11pt              % Horizontal space between outer margin and

                                % marginal note

                                % Top of page:

\topmargin 4.5pc                % Nominal distance from top of page to top of

                                % box containing running head.

\advance\topmargin by -1in      % Correct for LaTeX gratuitousness

\headheight 0pt                 % Height of box containing running head.

\headsep 0pt                    % Space between running head and text.

                                % Bottom of page:

\footskip 30pt                  % Distance from baseline of box containing foot

                                % to baseline of last line of text.

\@ifundefined{footheight}{\newdimen\footheight}{}% this is for LaTeX2e

\footheight 12pt                % Height of box containing running foot.

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

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

%% are OK as is. Olin.

\advance\topmargin by -37pt     % Leave 37pt above text for headers

\headheight 12pt                % Height of box containing running head.

\headsep 25pt                   % Space between running head and text.

\textheight 666pt       % 9 1/4 column height

\textwidth 42pc         % Width of text line.

                        % For two-column mode:

\columnsep 2pc          %    Space between columns

\columnseprule 0pt      %    Width of rule between columns.

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

                        % too hard to typeset in narrow columns.

\footnotesep 5.6pt      % Height of strut placed at the beginning of every

                        % footnote =3D height of normal \footnotesize strut,

                        % so no extra space between footnotes.

\skip\footins 8.1pt plus 4pt minus 2pt  % Space between last line of text and

                                        % top of first footnote.

\floatsep 11pt plus 2pt minus 2pt       % Space between adjacent floats moved

                                        % to top or bottom of text page.

\textfloatsep 18pt plus 2pt minus 4pt   % Space between main text and floats

                                        % at top or bottom of page.

\intextsep 11pt plus 2pt minus 2pt      % Space between in-text figures and

                                        % text.

\@ifundefined{@maxsep}{\newdimen\@maxsep}{}% this is for LaTeX2e

\@maxsep 18pt                           % The maximum of \floatsep,

                                        % \textfloatsep and \intextsep (minus

                                        % the stretch and shrink).

\dblfloatsep 11pt plus 2pt minus 2pt    % Same as \floatsep for double-column

                                        % figures in two-column mode.

\dbltextfloatsep 18pt plus 2pt minus 4pt% \textfloatsep for double-column

                                        % floats.

\@ifundefined{@dblmaxsep}{\newdimen\@dblmaxsep}{}% this is for LaTeX2e

\@dblmaxsep 18pt                        % The maximum of \dblfloatsep and

                                        % \dbltexfloatsep.

\@fptop 0pt plus 1fil    % Stretch at top of float page/column. (Must be

                         % 0pt plus ...)

\@fpsep 8pt plus 2fil    % Space between floats on float page/column.

\@fpbot 0pt plus 1fil    % Stretch at bottom of float page/column. (Must be

                         % 0pt plus ... )

\@dblfptop 0pt plus 1fil % Stretch at top of float page. (Must be 0pt plus ...)

\@dblfpsep 8pt plus 2fil % Space between floats on float page.

\@dblfpbot 0pt plus 1fil % Stretch at bottom of float page. (Must be

                         % 0pt plus ... )

\marginparpush 5pt       % Minimum vertical separation between two marginal

                         % notes.

\parskip 0pt plus 1pt            % Extra vertical space between paragraphs.

\parindent 9pt  % GM July 2000 / was 0pt - width of paragraph indentation.

\partopsep 2pt plus 1pt minus 1pt% Extra vertical space, in addition to

                                 % \parskip and \topsep, added when user

                                 % leaves blank line before environment.

\@lowpenalty   51       % Produced by \nopagebreak[1] or \nolinebreak[1]

\@medpenalty  151       % Produced by \nopagebreak[2] or \nolinebreak[2]

\@highpenalty 301       % Produced by \nopagebreak[3] or \nolinebreak[3]

\@beginparpenalty -\@lowpenalty % Before a list or paragraph environment.

\@endparpenalty   -\@lowpenalty % After a list or paragraph environment.

\@itempenalty     -\@lowpenalty % Between list items.

%\@namedef{ds@10pt}{\@latexerr{The `10pt' option is not allowed in the `acmconf'

\@namedef{ds@10pt}{\ClassError{The `10pt' option is not allowed in the `acmconf'	% January 2008

  document style.}\@eha}

%\@namedef{ds@11pt}{\@latexerr{The `11pt' option is not allowed in the `acmconf'

\@namedef{ds@11pt}{\ClassError{The `11pt' option is not allowed in the `acmconf'	% January 2008

  document style.}\@eha}

%\@namedef{ds@12pt}{\@latexerr{The `12pt' option is not allowed in the `acmconf'

\@namedef{ds@12pt}{\ClassError{The `12pt' option is not allowed in the `acmconf'	% January 2008

  document style.}\@eha}

\@options

\lineskip 2pt           % \lineskip is 1pt for all font sizes.

\normallineskip 2pt

\def\baselinestretch{1}

\abovedisplayskip 9pt plus2pt minus4.5pt%

\belowdisplayskip \abovedisplayskip

\abovedisplayshortskip  \z@ plus3pt%

\belowdisplayshortskip  5.4pt plus3pt minus3pt%

\let\@listi\@listI     % Setting of \@listi added 9 Jun 87

\def\small{\@setsize\small{9pt}\viiipt\@viiipt

\abovedisplayskip 7.6pt plus 3pt minus 4pt%

\belowdisplayskip \abovedisplayskip

\abovedisplayshortskip \z@ plus2pt%

\belowdisplayshortskip 3.6pt plus2pt minus 2pt

\def\@listi{\leftmargin\leftmargini %% Added 22 Dec 87

\topsep 4pt plus 2pt minus 2pt\parsep 2pt plus 1pt minus 1pt

\itemsep \parsep}}

\def\footnotesize{\@setsize\footnotesize{9pt}\ixpt\@ixpt

\abovedisplayskip 6.4pt plus 2pt minus 4pt%

\belowdisplayskip \abovedisplayskip

\abovedisplayshortskip \z@ plus 1pt%

\belowdisplayshortskip 2.7pt plus 1pt minus 2pt

\def\@listi{\leftmargin\leftmargini %% Added 22 Dec 87

\topsep 3pt plus 1pt minus 1pt\parsep 2pt plus 1pt minus 1pt

\itemsep \parsep}}

\newcount\aucount

\newcount\originalaucount

\newdimen\auwidth

\auwidth=\textwidth

\newdimen\auskip

\newcount\auskipcount

\newdimen\auskip

\global\auskip=1pc

\newdimen\allauboxes

\allauboxes=\auwidth

\newtoks\addauthors

\newcount\addauflag

\global\addauflag=0 %Haven't shown additional authors yet

\newtoks\subtitletext

\gdef\subtitle#1{\subtitletext={#1}}

\gdef\additionalauthors#1{\addauthors={#1}}

\gdef\numberofauthors#1{\global\aucount=#1

\ifnum\aucount>3\global\originalaucount=\aucount \global\aucount=3\fi %g}  % 3 OK - Gerry March 2007

\global\auskipcount=\aucount\global\advance\auskipcount by 1

\global\multiply\auskipcount by 2

\global\multiply\auskip by \auskipcount

\global\advance\auwidth by -\auskip

\global\divide\auwidth by \aucount}

% \and was modified to count the number of authors.  GKMT 12 Aug 1999

\def\alignauthor{%                  % \begin{tabular}

\end{tabular}%

  \begin{tabular}[t]{p{\auwidth}}\centering}%

%  *** NOTE *** NOTE *** NOTE *** NOTE ***

%  If you have 'font problems' then you may need

%  to change these, e.g. 'arialb' instead of "arialbd".

%  Gerry Murray 11/11/1999

%  *** OR ** comment out block A and activate block B or vice versa.

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

%

%  -- Start of block A -- (Type 1 or Truetype fonts)

%\newfont{\secfnt}{timesbd at 12pt} % was timenrb originally - now is timesbd

%\newfont{\secit}{timesbi at 12pt}   %13 Jan 00 gkmt

%\newfont{\subsecfnt}{timesi at 11pt} % was timenrri originally - now is timesi

%\newfont{\subsecit}{timesbi at 11pt} % 13 Jan 00 gkmt -- was times changed to timesbi gm 2/4/2000

%                         % because "normal" is italic, "italic" is Roman

%\newfont{\ttlfnt}{arialbd at 18pt} % was arialb originally - now is arialbd

%\newfont{\ttlit}{arialbi at 18pt}    % 13 Jan 00 gkmt

%\newfont{\subttlfnt}{arial at 14pt} % was arialr originally - now is arial

%\newfont{\subttlit}{ariali at 14pt} % 13 Jan 00 gkmt

%\newfont{\subttlbf}{arialbd at 14pt}  % 13 Jan 00 gkmt

%\newfont{\aufnt}{arial at 12pt} % was arialr originally - now is arial

%\newfont{\auit}{ariali at 12pt} % 13 Jan 00 gkmt

%\newfont{\affaddr}{arial at 10pt} % was arialr originally - now is arial

%\newfont{\affaddrit}{ariali at 10pt} %13 Jan 00 gkmt

%\newfont{\eaddfnt}{arial at 12pt} % was arialr originally - now is arial

%\newfont{\ixpt}{times at 9pt} % was timenrr originally - now is times

%\newfont{\confname}{timesi at 8pt} % was timenrri - now is timesi

%\newfont{\crnotice}{times at 8pt} % was timenrr originally - now is times

%\newfont{\ninept}{times at 9pt} % was timenrr originally - now is times

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

%  -- End of block A --

%

%

% -- Start of block B -- UPDATED FONT NAMES

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

% Gerry Murray 11/30/2006

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

\newfont{\secfnt}{ptmb8t at 12pt}

\newfont{\secit}{ptmbi8t at 12pt}    %13 Jan 00 gkmt

\newfont{\subsecfnt}{ptmri8t at 11pt}

\newfont{\subsecit}{ptmbi8t at 11pt}  % 

\newfont{\ttlfnt}{phvb8t at 18pt}

\newfont{\ttlit}{phvbo8t at 18pt}    % GM 2/4/2000

\newfont{\subttlfnt}{phvr8t at 14pt}

\newfont{\subttlit}{phvro8t at 14pt} % GM 2/4/2000

\newfont{\subttlbf}{phvb8t at 14pt}  % 13 Jan 00 gkmt

\newfont{\aufnt}{phvr8t at 12pt}

\newfont{\auit}{phvro8t at 12pt}     % GM 2/4/2000

\newfont{\affaddr}{phvr8t at 10pt}

\newfont{\affaddrit}{phvro8t at 10pt} % GM 2/4/2000

\newfont{\eaddfnt}{phvr8t at 12pt}

\newfont{\ixpt}{ptmr8t at 9pt}

\newfont{\confname}{ptmri8t at 8pt}

\newfont{\crnotice}{ptmr8t at 8pt}

\newfont{\ninept}{ptmr8t at 9pt}

% +++++++++++++++++++++++++++++++++++++++++++++

% -- End of block B --

%\def\email#1{{{\eaddfnt{\vskip 4pt#1}}}}

% If we have an email, inside a "shared affiliation" then we need the following instead

\def\email#1{{{\eaddfnt{\par #1}}}}       % revised  - GM - 11/30/2006

\def\addauthorsection{\ifnum\originalaucount>6  % was 3 - Gerry March 2007

    \section{Additional Authors}\the\addauthors

  \fi}

\newcount\savesection

\newcount\sectioncntr

\global\sectioncntr=1

\setcounter{secnumdepth}{3}

\def\appendix{\par

\section*{APPENDIX}

\setcounter{section}{0}

 \setcounter{subsection}{0}

 \def\thesection{\Alph{section}} }

\leftmargini 22.5pt

\leftmarginii 19.8pt    % > \labelsep + width of '(m)'

\leftmarginiii 16.8pt   % > \labelsep + width of 'vii.'

\leftmarginiv 15.3pt    % > \labelsep + width of 'M.'

\leftmarginv 9pt

\leftmarginvi 9pt

\leftmargin\leftmargini

\labelsep 4.5pt

\labelwidth\leftmargini\advance\labelwidth-\labelsep

\def\@listI{\leftmargin\leftmargini \parsep 3.6pt plus 2pt minus 1pt%

\topsep 7.2pt plus 2pt minus 4pt%

\itemsep 3.6pt plus 2pt minus 1pt}

\let\@listi\@listI

\@listi

\def\@listii{\leftmargin\leftmarginii

   \labelwidth\leftmarginii\advance\labelwidth-\labelsep

   \topsep 3.6pt plus 2pt minus 1pt

   \parsep 1.8pt plus 0.9pt minus 0.9pt

   \itemsep \parsep}

\def\@listiii{\leftmargin\leftmarginiii

    \labelwidth\leftmarginiii\advance\labelwidth-\labelsep

    \topsep 1.8pt plus 0.9pt minus 0.9pt

    \parsep \z@ \partopsep 1pt plus 0pt minus 1pt

    \itemsep \topsep}

\def\@listiv{\leftmargin\leftmarginiv

     \labelwidth\leftmarginiv\advance\labelwidth-\labelsep}

\def\@listv{\leftmargin\leftmarginv

     \labelwidth\leftmarginv\advance\labelwidth-\labelsep}

\def\@listvi{\leftmargin\leftmarginvi

     \labelwidth\leftmarginvi\advance\labelwidth-\labelsep}

\def\labelenumi{\theenumi.}

\def\theenumi{\arabic{enumi}}

\def\labelenumii{(\theenumii)}

\def\theenumii{\alph{enumii}}

\def\p@enumii{\theenumi}

\def\labelenumiii{\theenumiii.}

\def\theenumiii{\roman{enumiii}}

\def\p@enumiii{\theenumi(\theenumii)}

\def\labelenumiv{\theenumiv.}

\def\theenumiv{\Alph{enumiv}}

\def\p@enumiv{\p@enumiii\theenumiii}

\def\labelitemi{$\bullet$}

\def\labelitemii{\bf --}

\def\labelitemiii{$\ast$}

\def\labelitemiv{$\cdot$}

\def\verse{\let\\=\@centercr

  \list{}{\itemsep\z@ \itemindent -1.5em\listparindent \itemindent

          \rightmargin\leftmargin\advance\leftmargin 1.5em}\item[]}

\let\endverse\endlist

\def\quotation{\list{}{\listparindent 1.5em

    \itemindent\listparindent

    \rightmargin\leftmargin \parsep 0pt plus 1pt}\item[]}

\let\endquotation=\endlist

\def\quote{\list{}{\rightmargin\leftmargin}\item[]}

\let\endquote=\endlist

\def\descriptionlabel#1{\hspace\labelsep \bf #1}

\def\description{\list{}{\labelwidth\z@ \itemindent-\leftmargin

       \let\makelabel\descriptionlabel}}

\let\enddescription\endlist

\def\theequation{\arabic{equation}}

\arraycolsep 4.5pt   % Half the space between columns in an array environment.

\tabcolsep 5.4pt    % Half the space between columns in a tabular environment.

\arrayrulewidth .5pt % Width of rules in array and tabular environment. % (was .4) updated Gerry March 20 2007

\doublerulesep 1.8pt % Space between adjacent rules in array or tabular env.

\tabbingsep \labelsep   % Space used by the \' command.  (See LaTeX manual.)

\skip\@mpfootins =\skip\footins

\fboxsep =2.7pt      % Space left between box and text by \fbox and \framebox.

\fboxrule =.5pt      % Width of rules in box made by \fbox and \framebox. % (was .4) updated Gerry March 20 2007

\def\thepart{\Roman{part}} % Roman numeral part numbers.

\def\thesection       {\arabic{section}}

\def\thesubsection    {\thesection.\arabic{subsection}}

%\def\thesubsubsection {\thesubsection.\arabic{subsubsection}} % GM 7/30/2002

%\def\theparagraph     {\thesubsubsection.\arabic{paragraph}}  % GM 7/30/2002

\def\thesubparagraph  {\theparagraph.\arabic{subparagraph}}

\def\@pnumwidth{1.55em}

\def\@tocrmarg {2.55em}

\def\@dotsep{4.5}

\setcounter{tocdepth}{3}

%\def\tableofcontents{\@latexerr{\tableofcontents: Tables of contents are not

%  allowed in the `acmconf' document style.}\@eha}

\def\tableofcontents{\ClassError{%

    \string\tableofcontents\space is not allowed in the `acmconf' document	% January 2008

    style}\@eha}

\def\l@part#1#2{\addpenalty{\@secpenalty}

   \addvspace{2.25em plus 1pt}  % space above part line

   \begingroup

   \@tempdima 3em       % width of box holding part number, used by

     \parindent \z@ \rightskip \@pnumwidth      %% \numberline

     \parfillskip -\@pnumwidth

     {\large \bf        % set line in \large boldface

     \leavevmode        % TeX command to enter horizontal mode.

     #1\hfil \hbox to\@pnumwidth{\hss #2}}\par

     \nobreak           % Never break after part entry

   \endgroup}

\def\l@section#1#2{\addpenalty{\@secpenalty} % good place for page break

   \addvspace{1.0em plus 1pt}   % space above toc entry

   \@tempdima 1.5em             % width of box holding section number

   \begingroup

    \parindent  \z@ \rightskip \@pnumwidth

     \parfillskip -\@pnumwidth

     \bf                        % Boldface.

     \leavevmode                % TeX command to enter horizontal mode.

      \advance\leftskip\@tempdima %% added 5 Feb 88 to conform to

      \hskip -\leftskip           %% 25 Jan 88 change to \numberline

     #1\nobreak\hfil \nobreak\hbox to\@pnumwidth{\hss #2}\par

   \endgroup}

\def\l@subsection{\@dottedtocline{2}{1.5em}{2.3em}}

\def\l@subsubsection{\@dottedtocline{3}{3.8em}{3.2em}}

\def\l@paragraph{\@dottedtocline{4}{7.0em}{4.1em}}

\def\l@subparagraph{\@dottedtocline{5}{10em}{5em}}

%\def\listoffigures{\@latexerr{\listoffigures: Lists of figures are not

%  allowed in the `acmconf' document style.}\@eha}

\def\listoffigures{\ClassError{%

    \string\listoffigures\space is not allowed in the `acmconf' document	% January 2008

    style}\@eha}

\def\l@figure{\@dottedtocline{1}{1.5em}{2.3em}}

%\def\listoftables{\@latexerr{\listoftables: Lists of tables are not

%  allowed in the `acmconf' document style.}\@eha}

%\let\l@table\l@figure

\def\listoftables{\ClassError{%

    \string\listoftables\space is not allowed in the `acmconf' document		% January 2008

    style}\@eha}

 \let\l@table\l@figure

\def\footnoterule{\kern-3\p@

  \hrule width .5\columnwidth   % (was .4) updated Gerry March 20 2007

  \kern 2.6\p@}                 % The \hrule has default height of .4pt % (was .4) updated Gerry March 20 2007

% ------

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

%\hbox to .5em{\hss$^{\@thefnmark}$}#1}   % original

\hbox to .5em{\hss\textsuperscript{\@thefnmark}}#1}  % C. Clifton / GM Oct. 2nd. 2002

% -------

\long\def\@maketntext#1{\noindent

#1}

\long\def\@maketitlenotetext#1#2{\noindent

            \hbox to 1.8em{\hss$^{#1}$}#2}