% PaperMacros.tex --- Stolfi    May 8, 1984 10:19:41 pm PDT

% TeX 82 macros for single-column paper formats

% General comments

%   To be used in conjunction with KernelMacros and a Font package.
%   User also has to define a bunch of
%   dimensional parameters (\textwidth, \itemindent, etc) required by
%   those macros, as exemplified in TR10WideFormat, etc.

% Things to fix

% TITLES

\message{titles ...}

% Begin new file

\def\begfile#1{\gdef\filestamp{#1}\newfiletrue}

% Paper title and related stuff (author, institution, abstract, keywords)

%   Usage:
%   \begintitles
%     \title{P is equal to NP\cp (I think)}
%     \shorttitle{P=NP(?)} % optional --- title for page headers
%     \titlerule % A nice centered \hrule 
%     \author{I. Newton, {\rm Department of Cyberethics}}
%     \author{A. Einstein, {\rm W. C. Fields Laboratory}}
%     \institution{Sacred Well Divination School,
%        Chichen Itza, Yucatan}
%     \titlerule 
%     \abstract{In this paper we make some general remarks
%        concerning an algorithm for solving a problem related to an
%        important application of a well-known theoretical concept.}
%     \keywords{the, that, of, and, in, is.}
%    \endtitles

\newdimen\pagewidth

\def\begintitles{\begingroup
  \hsize=\pagewidth \leftglue=0pt \rightglue=0pt
  \normalsize \baselinesep -1pt \linesep 1.2ex
  \vskip4ex plus 0ex minus 1ex 
  }

\long\def\title#1{\vskip0pt plus1ex
  {\vbox{
     \titlefont\baselinesep 2.5ex\linesep.2ex\centered
     \advance\leftglue by 0.1\hsize
     \advance\rightglue by 0.1\hsize #1}}
  \gdef\hdtitle{#1}
  \vskip2ex}

\def\shorttitle#1{\gdef\hdtitle{#1}}

\def\titlerule{\centerline{
  \vbox{\vskip0.5ex\hrule width 3.0truein\vskip0.5ex}} }

\long\def\author#1{\vbox{\normalsize\centered #1}}

\long\def\institution#1{\vbox{\normalsize\centered\it #1}}

\newdimen\abstrwidth % width of abstract and keywords

\long\def\abstract#1{\vskip 1ex plus 0.5ex minus 0.5ex
  {\dimen0=\hsize
   \advance\dimen0 by -\abstrwidth
   \vbox{\advance\leftglue by 0.5\dimen0
     \advance\rightglue by 0.5\dimen0 
     \normalsize\rm\parindent\z@ #1}}}

\def\keywords#1{\centerline{\vbox{
   \hsize=\abstrwidth\normalsize\rm\parindent\z@
   \hmode{\smallsize\rm KEYWORDS:} #1}}}

\def\endtitles{\vskip3ex\null\endgroup}

% Support acknowledgement footnote

%  Usage:
%     \support{The author was partially supported by the kind
%        collaboration of his starving slaves, by the
%        plundering of several neighboring villages,
%        and by lavish gifts from Ramses III.}
%

\long\def\support#1{\botinsert{\smallsize\rm #1}}

% Section and subsection titles

%  Usage:
%    \section{1. Acid concepts}
%    \subsection{1.1A. Annotation and Undefinitions}
%    \subsection{Appendix A: The letters of the alphabet}

\def\section#1{
  \bigvbreak
  \hbox{{\secfont #1}}\message{ #1 ...}
  \penalty 1000\smallvskip}

\def\subsection#1{
  \medvbreak
  \hbox{{\subsecfont #1}}\message{ #1 ...}
  \penalty 1000\smallvskip}

% INDENTATIONS AND ITEMS

\message{paragraphs ...}

% Indented paragraphs.

% Say \indentpar Bla bla bla... to indent a single paragraph by \textindentglue.

\newglue\textindentglue

\def\indentpar{\hangindent\textindentglue\ignorespaces}

% Items

% Usage
% \begitems
%   \item{1.} Bla bla bla...\par
%   \item{2.} Bla bla..\par
%     \itemitem{2.1.} Ble blu bloo...\par
%     \itemitem{2.2.} Bli blee blaw...\par
% \enditems

\newglue\itemindentglue

\def\begitems{\par\vskip 0.3\parsep\penalty800
  \edef\resetm@rgin{\leftglue=\the\leftglue}
  \begingroup
  \parindent\z@
  \parsep=1.2\parsep plus 0.1\parsep minus 0.1\parsep }
\def\enditems{\par\endgroup\vskip 0.3\parsep}

\def\hangit#1#2{\par\vskip 0.2\parsep
  \resetm@rgin\advance\leftglue by #1\itemindentglue
  \hmode\llap{#2\enspace}\ignorespaces}
\def\item{\par\hangit{1}}
\def\itemitem{\par\hangit{2}}

% Narrower margins.

% Say {\narrower Bla bla bla...} to indent by \textindentglue
%   on both sides every paragraph between the braces.

\def\narrower{\advance\leftglue\textindentglue
  \advance\rightglue\textindentglue}

% Digressions: small print text, indented.

% Say \begdigress Bla bla bla...\enddigress for digression in smaller text
%   indented on both sides.

\def\begdigress{\vskip 0.2\parsep
  \begingroup\narrower\smallsize\rm}

\def\enddigress{\par\endgroup\vskip0.3\parsep}

% Finalization

\outer\def\bye{\par\vfill\supereject\end}

% TOP/BOTTOM/MIDDLE/FULL-PAGE INSERTIONS

% Non-floating bottom insertions

\newglue\botinsertsep % extra glue between footnotes

\long\def\botinsert#1{\insert\botins
  {\floatingpenalty=\@MM\vbreak\forbidden
     \vbox{#1}\vbreak\forbidden\vskip\botinsertsep}}

\newinsert\botins

\count\botins=1000 % footnote magnification factor (1 to 1)
\dimen\botins=\maxdimen % no limits for now

%  Insertions at top/mid/full page (floating)

\newdimen\topinsertsep % extra glue between topinserts

\long\def\topinsert#1{\par
  {\insert\topins{\floatingpenalty=\@MM\vbreak\forbidden\vbox{#1}
     \vbreak\forbidden\vskip\topinsertsep}}}

\long\def\pageinsert#1{\par
  {\insert\topins{\flo@tit
      \vbox to\textheight{#1\kern-\prevdepth}}}}

\long\def\midinsert#1{\par{\setbox0\vbox{#1}
  \dimen@=\ht0 \advance\dimen@\@dp0
  \advance\dimen@\abovedisplaysep \advance\dimen@\belowdisplaysep
  \advance\dimen@\pagetotal\advance\dimen@-\pageshrink
    \ifdim\dimen@>\pagegoal
       \insert\topins{\flo@tit\box\z@\vbreak\forbidden
         \vskip\belowdisplaysep}
     \else
       \unvskip
       \penalty\predisplaypenalty
       \vskip\abovedisplaysep
       \box\z@
       \penalty\postdisplaypenalty
       \vskip\belowdisplaysep \fi}}

\newinsert\topins

\count\topins=1000 % magnification factor (1 to 1)
\dimen\topins=\maxdimen % no limit per page

\def\flo@tit{\penalty100\splittopsep=\z@glue
  \splitmaxdepth=\maxdimen\floatingpenalty=\z@}

% FIGURES

\message{figures ...}

%  figures with caption at bottom

%  Use \fig 5cm{\flower}{Figure 1: A Boojum} 
%    for a figure 5 cm high containing {\flower}, followed by a 
%    centered caption with the given text.

\newif\ifomitfigures % if true, omits in-line figures (keeps captions)
\newdimen\figcapwidth % width of figure captions

\long\def\fig#1#{\vf@g{#1}} % figure with caption at bottom

\long\def\vf@g#1#2#3{
  \setbox2\hbox to \figcapwidth{
    \vbox{\hsize=\figcapwidth\leftglue=0pt\rightglue=0pt #3}}
  \setbox0\vbox{
    \hbox to \hsize{\ifomitfigures\else\hss\vbox to #1{#2}\fi\hss}
    \ifdim 1\ht2>0pt
        \vskip2ex plus0.5ex
        \hbox to \hsize{\hss\box2\hss}
        \vskip 0.5ex \fi}
  \midinsert{\box0}}

%  figures with legend on the side

%  Use \rfig5cm{\flower}{Figure 1: A Boojum},
%  Use \lfig5cm{\flower}{Figure 1: A Boojum}
%    for a figure 5 cm high and \mfigwidth wide on the right/left margin,
%    with the given legend typeset by its side

\newdimen\mfigwidth % width of marginal figures

\long\def\rfig#1#{\mf@g{R}{#1}}
\long\def\lfig#1#{\mf@g{L}{#1}}

\long\def\mf@g#1#2#3#4{\dimen@=\hsize
    \advance\dimen@ by \if R#1 -\leftglue\else -\rightglue\fi
    \advance\dimen@ by -\mfigwidth\advance\dimen@ by -2pt
    \setbox2\vtop{\hsize=\dimen@\leftglue=0pt\rightglue=0pt #4}
    \setbox0\vtop{\hrule height0pt
       \ifomitfigures\else\vbox to #2{
         \hsize=\mfigwidth\leftglue=0pt\rightglue=0pt #3}\fi}
    \setbox0\hbox to \hsize{\if R#1\hskip\leftglue
    \box2\hskip 0pt plus 1000pt\raise1\ht2\box0\else
    \raise1\ht2\box0\hskip 0pt plus 1000pt\box2\hskip\rightglue\fi}
    \midinsert{\box0}}

% FOOTNOTES

\message{footnotes ...}

% Non-splitting, non-floating footnotes

\newglue\footextraglue % extra glue before first footnote
\newdimen\footindent % left indentation of footnotes

\long\def\foot#1#2{\s@vesf$^{#1}$\@sf
  \botinsert{\hsize=\textwidth\f@@ttext{#1}{#2}}}

% Footnotes with figures

% Usage: \footfig\bullet 3cm{\buu}{Foo Bar Baz} for a footnote
%  with text "Foo Bar Baz" and a figure 3cm high on its right side
%  whose contents is \buu.

\newdimen\footfigwidth % width of figures in footnotes

\long\def\footfig#1#2#{\f@@tfig{#1}{#2}}

% Footnote private stuff

\long\def\f@@tfig#1#2#3#4{\s@vesf$^{#1}$\@sf
  \botinsert{\hbox to \textwidth
     {$\vcenter{
        \hsize=\textwidth\advance\hsize by -\footfigwidth
        \advance\hsize by -2pt
        \f@@ttext{#1}{#4}}\hss
      \ifomitfigures\else
        \vcenter to #2{\hsize=\footfigwidth #3}\fi$}}}

\long\def\f@@ttext#1#2{\smallsize\rm
  \leftglue\footindent\parindent\z@
  \noindent\llap{\normalsize\rm$^{#1}$\kern 0.3em}#2}

\def\s@vesf{\edef\@sf{\spacefactor\the\spacefactor}}

% REFERENCES

\message{references ...}

% references

% Usage:
%  \ref  [Boo] \refauth{Boojum, C. D.}
%    \reftit{Salting jubjubs in glue.}
%    \refpub{J. of Beavers and Butchers V. 1 N. 357 (1999).}
%    \refrem{Charming; reminds me of smiles and soap.}

\newglue\refvglue % extra vertical skip between references
\newdimen\refindent % indentation of references
\newdimen\refremindent % indentation of reference remarks

\def\ref [#1]{\par\penalty-400\vskip \refvglue
  \noindent\hangindent=\refindent \hangafter=1
  $\hbox to \refindent{[#1]\hskip0.5em plus1fil}$}

\def\refauth#1{\unskip {\rm #1}} % Author (s)
\def\reftit#1{\unskip, {\it #1}} % Title
\def\refpub#1{\unskip\ {\rm #1}} % Publication
\long\def\refrem#1{\par\vskip0.5ex
  {\advance\leftglue by \refremindent\advance\leftglue by \refindent
  {$\rpoint$ \smallsize\rm #1\par}}} % Review comments

% THEOREMS, DEFINITIONS, PROOFS

\message{theorems ...}

% Theorems, lemmas, conjectures, and definitions.

% Usage: \theorem{3.1}{P=NP.\tp Provided of course that N=1 or P=0.}

\newdimen\theostatindent  % indentation of theorem statements

\def\lemma{\theolemma{\it}{Lemma}}
\def\theorem{\theolemma{\it}{Theorem}}
\def\corollary{\theolemma{\it}{Corollary}}
\def\conjecture{\theolemma{\it}{Conjecture}}
\def\definition{\theolemma{\rm}{Definition}}
\def\problem{\theolemma{\rm}{Problem}}

\long\def\theolemma#1#2#3#4{\par\medvbreak
  {\advance\leftglue by \theostatindent\parindent 0pt
   \hmode\hskip-\theostatindent{\bf #2 #3. }
   {#1 #4\par}}
  \ifdim\lastglue<\medvglue
    \unvskip\penalty55\medvskip\fi}

% Proofs.

% Usage: \proof Bla bla bla.\par More bla bla bla. \qed
%    (usually, but not necessarily, just after a \theorem or \lemma)

\newdimen\proofindent  % indentation of proofs

\outer\def\proof{\medvbreak\begingroup \advance\leftglue by \proofindent
  \noindent\begproofmark}
\outer\def\qed{\unskip\penalty1000\endproofmark\par\endgroup
  \vskip 1.0ex plus 1.0ex}

% MISCELLANEOUS OPTIONS AND PARAMETERS

\message{parameters ...}

% (dimensions in points unless otherwise indicated)

% Proofs

\def\begproofmark{{\bf Proof: }}
\def\endproofmark{\penalty1000
  \hbox{\hskip0.5em\vrule width 1.0ex height1.3ex depth0.3ex}} % black slug

% Figures

\def\figmark{} % change to, say, \hbox{>>==>} for PressEdit and such

% OUTPUT ROUTINE

\message{output ...}

% Page format parameters

\newdimen\textwidth % width of text on page
\newdimen\textheight % height of text on page
\newdimen\pagewidth % width of page (incl. headers and footers)

% Global flags and variables (internal)

\newif\ifprintfilestamp \printfilestamptrue % if T, prints file stamp
\newif\iffirstpage \firstpagetrue % T on first page of output.
\newif\ifnewfile   \newfilefalse  % T on first page of a new file.

\countdef\pageno=0 \pageno=1 % first page is number 1

% Page header and footer formats

\def\makeheadline{\vbox{
  \vbox to 0pt{
    \vskip0pt minus1000pt
    \hbox to \pagewidth
     {\headerfont \iffirstpage \else \hdtitle\hfil\number\pageno \fi}
    \vskip 4 pt
    \hrule
    \vskip 3 pt
    \hrule}
  \vskip 20pt}}

\newif\ifputf@@t % internal flag

\def\makefootline{
  \putf@@ttrue
  \ifprintfilestamp \else \putf@@tfalse\fi
  \ifnewfile \else \putf@@tfalse \fi
  \vbox{
    \ifputf@@t 
      \vskip 15pt
      \hbox to \pagewidth{\hfil \smallsize\it \filestamp}
    \fi} }

% Page format

\output{\plainoutput}

\def\plainoutput{\baselinesep -1pt \linesep 0pt
  \shipout\vbox{\makeheadline\pagebody\makefootline}
  \global\advance \pageno by 1
  \global\newfilefalse
  \global\firstpagefalse
  \ifnum\outputpenalty>-\@MM \else\dosupereject\fi}

\def\pagebody{\vbox to\vsize{
  \boxmaxdepth\maxdepth
  \ifvoid\topins\else\unvbox\topins\fi
  \unvbox\@cclv % open up \box255
  \ifvoid\botins\else % footnote info is present
    \vskip\glue\botins
    \kern-3\p@ \hrule width 2truein \kern 2.6\p@
    \unvbox\botins\fi}
  }

\def\dosupereject
  {\ifnum\insertpenalties>\z@ % s.thing is being held over
     \line{}\kern-\topskip\forbidden\vfill\supereject\fi}



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