Meeting Pearls 3/Meeting_Pearls_III.iso/Pearls/texmf/inputs/latex/unpacked/slides.def

Text File | 1995-06-21 | 19.5 KB | 547 lines

%%
%% This is file `slides.def', generated
%% on <1995/6/21> with the docstrip utility (2.2i).
%%
%% The original source files were:
%%
%% slides.dtx  (with options: `cmd')
%%
%%
%% This is a generated file.
%%
%% Copyright 1993-1995 the LaTeX3 project and any individual authors
%% listed elsewhere in this file. All rights reserved.
%%
%% For further copyright information see the file legal.txt, and any
%% other copyright notices in this file.
%%
%% This file is part of the LaTeX2e system.
%% ----------------------------------------
%% This system is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
%%
%% For error reports concerning UNCHANGED versions of this file no more
%% than one year old, see bugs.txt.
%%
%% Please do not request updates from us directly. Primary
%% distribution is through the CTAN archives.
%%
%%
%% IMPORTANT COPYRIGHT NOTICE:
%%
%% You are NOT ALLOWED to distribute this file alone.
%%
%% You are allowed to distribute this file under the condition that it is
%% distributed together with all the files listed in manifest.txt.
%%
%% If you receive only some of these files from someone, complain!
%%
%% Permission is granted to copy this file to another file with a clearly
%% different name and to customize the declarations in that copy to serve
%% the needs of your installation, provided that you comply with
%% the conditions in the file legal.txt.
%%
%% However, NO PERMISSION is granted to generate or to distribute a
%% modified version of this file under its original name.
%%
%% You are NOT ALLOWED to change this file.
%%
%%
%% MODIFICATION ADVICE:
%%
%% If you want to customize this file, it is best to make a copy of the
%% source file(s) from which it was produced. Use a different name for
%% your copy(ies) and modify the copy(ies); this will ensure that your
%% modifications do not get overwritten when you install a new release of
%% the standard system. You should also ensure that your modified source
%% file does not generate any modified file with the same name as a
%% standard file. You can then easily distribute your modifications by
%% distributing the modified and renamed copy of the source file, taking
%% care to observe the conditions in legal.txt; this will ensure that
%% other users can safely use your modifications.
%%
%% You will also need to produce your own, suitably named, .ins file to
%% control the generation of files from your source file; this file
%% should contain your own preambles for the files it generates, not
%% those in the standard .ins files.
%%
%% The names of the source files used are shown above.
%%
%%
%%
%% \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         \~}
\ProvidesFile{slides.def}
              [1995/05/23 v2.3p
               SLiTeX definitions]
\message{hacks,}

\outer\def\newifG#1{\count@\escapechar \escapechar\m@ne
  \expandafter\expandafter\expandafter
   \edef\@ifG#1{true}{\global\let\noexpand#1\noexpand\iftrue}%
  \expandafter\expandafter\expandafter
   \edef\@ifG#1{false}{\global\let\noexpand#1\noexpand\iffalse}%
  \@ifG#1{false}\escapechar\count@} % the condition starts out false
\def\@ifG#1#2{\csname\expandafter\ifG@\string#1#2\endcsname}
{\uccode`1=`i \uccode`2=`f \uccode`3=`G \uppercase{\gdef\ifG@123{G}}}
 % `ifG' is required

\def\@gobbletoend#1{\def\@argend{#1}\@ggobtoend}

\long\def\@ggobtoend#1\end#2{\fi\def\@tempa{#2}%
\ifx\@tempa\@argend\else\@ggobtoend\fi}
 \message{slides,}
\newif\if@bw
\newif\if@visible
\newif\if@onlyslidesw \@onlyslideswfalse
\newif\if@onlynotesw  \@onlynoteswfalse
\newif\if@makingslides
\newifG\ifG@slidesw
\countdef\c@slide=0 \c@slide=0
\def\cl@slide{}
\countdef\c@overlay=1 \c@overlay=0
\def\cl@overlay{}
\countdef\c@note=2 \c@note=0
\def\cl@note{}

\@addtoreset{overlay}{slide}
\@addtoreset{note}{slide}
\@definecounter{page}
\@addtoreset{page}{slide}
\@addtoreset{page}{note}
\@addtoreset{page}{overlay}

\def\theslide{\@arabic\c@slide}
\def\theoverlay{\theslide-\@alph\c@overlay}
\def\thenote{\theslide-\@arabic\c@note}
\def\@sl@getargs#1-#2-#3\relax#4#5{\xdef#4{#1}\xdef#5{#2}}
\def\@sl@ccdr#1,#2\relax#3#4{\xdef#3{#1-#1-}\xdef#4{#2}}

\def\@setlimits #1#2#3{\expandafter\@sl@ccdr#1\relax\@sl@gtmp #1%
\expandafter\@sl@getargs\@sl@gtmp\relax#2#3}
\def\onlyslides#1{\@onlyslideswtrue
   \gdef\@doglslidelist{#1,999999,999999}%
   \if@onlynotesw \else
      \@onlynoteswtrue\gdef\@doglnotelist{999999,999999}\fi
   \typeout{Only Slides #1}}
\def\onlynotes#1{\@onlynoteswtrue
   \gdef\@doglnotelist{#1,999999,999999}%
   \if@onlyslidesw \else
      \@onlyslideswtrue\gdef\@doglslidelist{999999,999999}\fi
   \typeout{Only Notes #1}}
\if@compatibility
\def\blackandwhite#1{\newpage\setcounter{page}{0}\@bwtrue\@visibletrue
\if@onlyslidesw \xdef\@doslidelist{\@doglslidelist}%
\@setlimits\@doslidelist\@doslidelow\@doslidehigh\fi
\if@onlynotesw \xdef\@donotelist{\@doglnotelist}%
\@setlimits\@donotelist\@donotelow\@donotehigh\fi
\normalsize\setcounter{slide}{0}\setcounter{overlay}{0}%
\setcounter{note}{0}\@makingslidestrue\input #1\@makingslidesfalse}
\def\colors#1{\@for\@colortemp:=#1\do{\expandafter
  \xdef\csname\@colortemp\endcsname{\noexpand\@color{\@colortemp}}}\ifx
  \@colorlist\@empty \gdef\@colorlist{#1}%
    \else \xdef\@colorlist{\@colorlist,#1}\fi}

\def\@colorlist{}
\def\colorslides#1{\newpage\setcounter{page}{0}\@bwfalse
\@for\@currcolor:=\@colorlist\do
{\@visibletrue
\if@onlyslidesw \xdef\@doslidelist{\@doglslidelist}%
\@setlimits\@doslidelist\@doslidelow\@doslidehigh\fi
\if@onlynotesw \xdef\@donotelist{\@doglnotelist}%
\@setlimits\@donotelist\@donotelow\@donotehigh\fi
\normalsize\setcounter{slide}{0}\setcounter{overlay}{0}%
\setcounter{note}{0}\typeout{color \@currcolor}%
\newpage
\begin{huge}%
\begin{center}%
COLOR LAYER\\[.75in]%
\@currcolor
\end{center}%
\end{huge}%
\newpage
\@makingslidestrue
\input #1
\@makingslidesfalse}}
\else  %% if@compatibility
\def\setupcounters{\newpage\setcounter{page}{0}\@bwtrue\@visibletrue
\if@onlyslidesw \xdef\@doslidelist{\@doglslidelist}%
\@setlimits\@doslidelist\@doslidelow\@doslidehigh\fi
\if@onlynotesw \xdef\@donotelist{\@doglnotelist}%
\@setlimits\@donotelist\@donotelow\@donotehigh\fi
\normalsize\setcounter{slide}{0}\setcounter{overlay}{0}%
\setcounter{note}{0}\@makingslidesfalse}

\AtBeginDocument{\setupcounters}
\fi %% if@compatibility
\if@compatibility
\def\slide#1{\stepcounter{slide}\G@slideswtrue\if@onlyslidesw
\@whilenum \c@slide >\@doslidehigh\relax
\do{\@setlimits\@doslidelist\@doslidelow\@doslidehigh}\ifnum
\c@slide <\@doslidelow\relax\G@slideswfalse\fi\fi
\ifG@slidesw
  \G@slideswfalse
  \if@bw\G@slideswtrue\else
    \@color{#1}\if@visible \G@slideswtrue \fi
  \fi
\fi
\ifG@slidesw \newpage\thispagestyle{slide}%
\csname \last@color \endcsname
\else\end{slide}\@gobbletoend{slide}\fi}
\else  %% if@compatibility
\def\slide{\par\break
\stepcounter{slide}\setcounter{page}{0}\G@slideswtrue\if@onlyslidesw
\@whilenum \c@slide >\@doslidehigh\relax
\do{\@setlimits\@doslidelist\@doslidelow\@doslidehigh}\ifnum
\c@slide <\@doslidelow\relax\G@slideswfalse\fi\fi
\ifG@slidesw
  \G@slideswfalse
  \if@bw\G@slideswtrue\else
    \if@visible \G@slideswtrue \fi
  \fi
\fi
\ifG@slidesw \@makingslidestrue\thispagestyle{slide}%
\csname \last@color \endcsname
\else\end{slide}\@gobbletoend{slide}\fi}
\fi %% if@compatibility

\let\last@color\@empty

\def\endslide{\par\break}
\if@compatibility
\def\overlay#1{\stepcounter{overlay}\G@slideswtrue%
\if@onlyslidesw\ifnum \c@slide <\@doslidelow\relax
\G@slideswfalse\fi\fi
\ifG@slidesw \G@slideswfalse\begingroup\if@bw\G@slideswtrue%
\else\@color{#1}\if@visible \G@slideswtrue\fi\fi\endgroup\fi
\ifG@slidesw \newpage\thispagestyle{overlay}%
\else\end{overlay}\@gobbletoend{overlay}\fi}
\else %%if@compatibility
\def\overlay{\par\break
  \stepcounter{overlay}%
  \setcounter{page}{0}%
  \G@slideswtrue%
  \if@onlyslidesw\ifnum \c@slide <\@doslidelow\relax
    \G@slideswfalse\fi\fi
  \ifG@slidesw \G@slideswfalse
    \begingroup\if@bw\G@slideswtrue%
               \else\if@visible \G@slideswtrue\fi\fi
    \endgroup\fi
  \ifG@slidesw \@makingslidestrue\thispagestyle{overlay}%
  \else\end{overlay}\@gobbletoend{overlay}\fi}
\fi %%if@compatibility

\def\endoverlay{\par\break}
\if@compatibility
\def\note{\stepcounter{note}%
   \if@bw
      \G@slideswtrue
      \if@onlynotesw\@whilenum \c@slide >\@donotehigh\relax
      \do{\@setlimits\@donotelist\@donotelow\@donotehigh}\ifnum
        \c@slide <\@donotelow\relax \G@slideswfalse\fi\fi
      \else\G@slideswfalse\fi
      \ifG@slidesw \newpage\thispagestyle{note}\else
      \end{note}\@gobbletoend{note}\fi}
\else %%if@compatibility
\def\note{\par\break\stepcounter{note}\setcounter{page}{0}%
   \if@bw
      \G@slideswtrue
      \if@onlynotesw\@whilenum \c@slide >\@donotehigh\relax
      \do{\@setlimits\@donotelist\@donotelow\@donotehigh}\ifnum
        \c@slide <\@donotelow\relax \G@slideswfalse\fi\fi
      \else\G@slideswfalse\fi
      \ifG@slidesw \@makingslidestrue\thispagestyle{note}\else
      \end{note}\@gobbletoend{note}\fi}
\fi %%if@compatibility

\def\endnote{\par\break}
\def\@color#1{\@mmodetest
 {\if@bw \@tempswatrue \else \@tempswafalse
   \@for \@tempa :=#1\do{\ifx\@tempa\@currcolor\@tempswatrue\fi
                         \let\last@color\@tempa}\fi
  \if@tempswa \visible \else \invisible \fi
  \ignorespaces}}

\def\@mmodetest#1{\ifmmode\ClassWarning{slides}{Color-changing command
       in math mode has been ignored}\else #1\fi}

\def\invisible{\@mmodetest
  {\if@visible
     \@visiblefalse
     \fontshape\f@shape\selectfont
     \mathversion{invisible}%
   \fi
   \ignorespaces}}

\def\visible{\@mmodetest
  {\if@visible
   \else
     \@visibletrue
     \fontshape{\expandafter\@gobble\f@shape}\selectfont
     \mathversion{normal}%
   \fi
   \ignorespaces}}

\def\fontshape#1{\edef\f@shape{\if@visible \else I\fi #1}}
\renewcommand{\familydefault}{\sfdefault}
\DeclareFontFamily{U}{lasy}{}{}
\DeclareFontShape{U}{lasy}{m}{n}{%
      <12><13.82><16.59><19.91><23.89><28.66><34.4><41.28>lasy8
}{}
\DeclareFontShape{U}{lasy}{m}{In}{%
      <13.82><16.59><19.91><23.89><28.66><34.4><41.28>ilasy8
}{}
\message{picture,}
\def\line(#1,#2)#3{\if@visible\@xarg #1\relax \@yarg #2\relax
\@linelen #3\unitlength
\ifnum\@xarg =\z@ \@vline
  \else \ifnum\@yarg =\z@ \@hline \else \@sline\fi
\fi\fi}

\def\vector(#1,#2)#3{\if@visible\@xarg #1\relax \@yarg #2\relax
\@linelen #3\unitlength
\ifnum\@xarg =\z@ \@vvector
  \else \ifnum\@yarg =\z@ \@hvector \else \@svector\fi
\fi\fi}

\def\dashbox#1(#2,#3){%
\leavevmode\if@visible\hb@xt@\z@{\baselineskip \z@
\lineskip \z@
\@dashdim #2\unitlength
\@dashcnt \@dashdim \advance\@dashcnt 200
\@dashdim #1\unitlength\divide\@dashcnt \@dashdim
\ifodd\@dashcnt\@dashdim\z@
\advance\@dashcnt \@ne \divide\@dashcnt \tw@
\else \divide\@dashdim \tw@ \divide\@dashcnt \tw@
\advance\@dashcnt \m@ne
\setbox\@dashbox \hbox{\vrule \@height \@halfwidth \@depth \@halfwidth
\@width \@dashdim}\put(0,0){\copy\@dashbox}%
\put(0,#3){\copy\@dashbox}%
\put(#2,0){\hskip-\@dashdim\copy\@dashbox}%
\put(#2,#3){\hskip-\@dashdim\box\@dashbox}%
\multiply\@dashdim \thr@@
\fi
\setbox\@dashbox \hbox{\vrule \@height \@halfwidth \@depth \@halfwidth
\@width #1\unitlength\hskip #1\unitlength}\@tempcnta\z@
\put(0,0){\hskip\@dashdim \@whilenum \@tempcnta <\@dashcnt
\do{\copy\@dashbox\advance\@tempcnta \@ne }}\@tempcnta\z@
\put(0,#3){\hskip\@dashdim \@whilenum \@tempcnta <\@dashcnt
\do{\copy\@dashbox\advance\@tempcnta \@ne }}%
\@dashdim #3\unitlength
\@dashcnt=\@dashdim \advance\@dashcnt 200
\@dashdim #1\unitlength\divide\@dashcnt \@dashdim
\ifodd\@dashcnt \@dashdim=\z@
\advance\@dashcnt \@ne \divide\@dashcnt \tw@
\else
\divide\@dashdim \tw@ \divide\@dashcnt \tw@
\advance\@dashcnt \m@ne
\setbox\@dashbox\hbox{\hskip -\@halfwidth
\vrule \@width \@wholewidth
\@height \@dashdim}\put(0,0){\copy\@dashbox}%
\put(#2,0){\copy\@dashbox}%
\put(0,#3){\lower\@dashdim\copy\@dashbox}%
\put(#2,#3){\lower\@dashdim\copy\@dashbox}%
\multiply\@dashdim \thr@@
\fi
\setbox\@dashbox\hbox{\vrule \@width \@wholewidth
\@height #1\unitlength}\@tempcnta\z@
\put(0,0){\hskip -\@halfwidth \vbox{\@whilenum \@tempcnta <\@dashcnt
\do{\vskip #1\unitlength\copy\@dashbox\advance\@tempcnta \@ne }%
\vskip\@dashdim}}\@tempcnta\z@
\put(#2,0){\hskip -\@halfwidth \vbox{\@whilenum \@tempcnta <\@dashcnt
\relax\do{\vskip #1\unitlength\copy\@dashbox\advance\@tempcnta \@ne }%
\vskip\@dashdim}}}\fi\@makepicbox(#2,#3)}

\def\@oval(#1,#2)[#3]{\if@visible\begingroup \boxmaxdepth \maxdimen
  \@ovttrue \@ovbtrue \@ovltrue \@ovrtrue
  \@tfor\@tempa :=#3\do{\csname @ov\@tempa false\endcsname}\@ovxx
  #1\unitlength \@ovyy #2\unitlength
  \@tempdimb \ifdim \@ovyy >\@ovxx \@ovxx\else \@ovyy \fi
  \advance \@tempdimb -2\p@
  \@getcirc \@tempdimb
  \@ovro \ht\@tempboxa \@ovri \dp\@tempboxa
  \@ovdx\@ovxx \advance\@ovdx -\@tempdima \divide\@ovdx \tw@
  \@ovdy\@ovyy \advance\@ovdy -\@tempdima \divide\@ovdy \tw@
  \@circlefnt \setbox\@tempboxa
  \hbox{\if@ovr \@ovvert32\kern -\@tempdima \fi
  \if@ovl \kern \@ovxx \@ovvert01\kern -\@tempdima \kern -\@ovxx \fi
  \if@ovt \@ovhorz \kern -\@ovxx \fi
  \if@ovb \raise \@ovyy \@ovhorz \fi}\advance\@ovdx\@ovro
  \advance\@ovdy\@ovro \ht\@tempboxa\z@ \dp\@tempboxa\z@
  \@put{-\@ovdx}{-\@ovdy}{\box\@tempboxa}%
  \endgroup\fi}

\def\@circle#1{\if@visible \begingroup \boxmaxdepth \maxdimen
   \@tempdimb #1\unitlength
   \ifdim \@tempdimb >15.5\p@\relax \@getcirc\@tempdimb
      \@ovro\ht\@tempboxa
     \setbox\@tempboxa\hbox{\@circlefnt
      \advance\@tempcnta\tw@ \char \@tempcnta
      \advance\@tempcnta\m@ne \char \@tempcnta \kern -2\@tempdima
      \advance\@tempcnta\tw@
      \raise \@tempdima \hbox{\char\@tempcnta}\raise \@tempdima
        \box\@tempboxa}\ht\@tempboxa\z@ \dp\@tempboxa\z@
      \@put{-\@ovro}{-\@ovro}{\box\@tempboxa}%
   \else  \@circ\@tempdimb{96}\fi\endgroup\fi}

\def\@dot#1{%
  \if@visible\@tempdimb #1\unitlength \@circ\@tempdimb{112}\fi}
\def\@frameb@x#1{%
  \@tempdima\fboxrule
  \advance\@tempdima\fboxsep
  \advance\@tempdima\dp\@tempboxa
  \leavevmode
  \hbox{%
    \lower\@tempdima\hbox{%
      \vbox{%
        \if@visible\hrule\@height\else\vskip\fi\fboxrule
        \hbox{%
          \if@visible\vrule\@width\else\hskip\fi\fboxrule
          #1%
          \vbox{%
            \vskip\fboxsep
            \box\@tempboxa
            \vskip\fboxsep}%
          #1%
          \if@visible\vrule\@width\else\hskip\fi\fboxrule}%
        \if@visible\hrule\@height\else\vskip\fi\fboxrule}}}}

\long\def\frame#1{\if@visible\leavevmode
\vbox{\vskip-\@halfwidth\hrule \@height\@halfwidth \@depth \@halfwidth
  \vskip-\@halfwidth\hbox{\hskip-\@halfwidth \vrule \@width\@wholewidth
  \hskip-\@halfwidth #1\hskip-\@halfwidth \vrule \@width \@wholewidth
  \hskip -\@halfwidth}\vskip -\@halfwidth\hrule \@height \@halfwidth
  \@depth \@halfwidth\vskip -\@halfwidth}\else #1\fi}
\message{mods,}
\def\@rule[#1]#2#3{\@tempdima#3\advance\@tempdima #1\leavevmode
 \hbox{\if@visible\vrule
  \@width#2 \@height\@tempdima \@depth-#1\else
\vrule \@width \z@ \@height\@tempdima \@depth-#1\vrule
 \@width#2 \@height\z@\fi}}


\def\_{\leavevmode \kern.06em \if@visible\vbox{\hrule \@width.3em}\else
   \vbox{\hrule \@height \z@ \@width.3em}\vbox{\hrule \@width \z@}\fi}
\def\@mathbox#1#2#3{\setbox#2\hbox{$\m@th#1{#3}$}}

\def\@vbphantom#1{\setbox\tw@\null \ht\tw@\ht #1\dp\tw@\dp #1%
   \box\tw@}

\def\@bphantom#1{\setbox\tw@\null
   \wd\tw@\wd #1\ht\tw@\ht #1\dp\tw@\dp #1%
   \box\tw@}

\def\@hbphantom#1{\setbox\tw@\null \wd\tw@\wd #1\ht\tw@\z@ \dp\tw@\z@
   \box\tw@}

\def\@hvsmash#1#2{\@mathbox#1\z@{#2}\ht\z@\z@ \dp\z@\z@ \wd\z@\z@
   \box\z@}

\def\underline#1{\relax\ifmmode
  \@xunderline{#1}\else $\m@th\@xunderline{\hbox{#1}}$\relax\fi}

\def\@xunderline#1{\mathchoice{\@xyunderline\displaystyle{#1}}%
   {\@xyunderline
    \textstyle{#1}}{\@xyunderline\scriptstyle{#1}}{\@xyunderline
      \scriptscriptstyle{#1}}}

\def\@xyunderline#1#2{%
   \@mathbox#1\@smashboxa{#2}\@hvsmash#1{\copy\@smashboxa}%
   \if@visible \@hvsmash#1{\@@underline{\@bphantom\@smashboxa}}\fi
  \@mathbox#1\@smashboxb{\@@underline{\box\@smashboxa}}%
   \@bphantom\@smashboxb}

\let\@@overline=\overline

\def\overline#1{\mathchoice{\@xoverline\displaystyle{#1}}{\@xoverline
    \textstyle{#1}}{\@xoverline\scriptstyle{#1}}{\@xoverline
      \scriptscriptstyle{#1}}}

\def\@xoverline#1#2{%
   \@mathbox#1\@smashboxa{#2}\@hvsmash#1{\copy\@smashboxa}%
   \if@visible \@hvsmash#1{\@@overline{\@bphantom\@smashboxa}}\fi
   \@mathbox#1\@smashboxb{\@@overline{\box\@smashboxa}}%
   \@bphantom\@smashboxb}
\def\frac#1#2{\mathchoice
   {\@frac\displaystyle\textstyle{#1}{#2}\textfont}{\@frac
         \textstyle\scriptstyle{#1}{#2}\textfont}{\@frac
         \scriptstyle\scriptscriptstyle{#1}{#2}\scriptfont}{\@frac
         \scriptscriptstyle\scriptscriptstyle{#1}{#2}\scriptscriptfont}}

\def\@frac#1#2#3#4#5{%
   \@mathbox#1\@smashboxc{{\begingroup#3\endgroup\over#4}}%
   \setbox\tw@\null
   \ht\tw@ \ht\@smashboxc
   \dp\tw@ \dp\@smashboxc
   \wd\tw@ \wd\@smashboxc
   \box\if@visible\@smashboxc\else\tw@\fi}

\def\r@@t#1#2{\setbox\z@\hbox{$\m@th#1\@xysqrt#1{#2}$}%
  \dimen@\ht\z@ \advance\dimen@-\dp\z@
  \mskip5mu\raise.6\dimen@\copy\rootbox \mskip-10mu\box\z@}

\def\sqrt{\@ifnextchar[{\@sqrt}{\@xsqrt}}
\def\@sqrt[#1]{\root #1\of}
\def\@xsqrt#1{\mathchoice{\@xysqrt\displaystyle{#1}}{\@xysqrt
     \textstyle{#1}}{\@xysqrt\scriptstyle{#1}}{\@xysqrt
    \scriptscriptstyle{#1}}}
\def\@xysqrt#1#2{\@mathbox#1\@smashboxa{#2}\if@visible
    \@hvsmash#1{\@@sqrt{\@bphantom\@smashboxa}}\fi
    \phantom{\@@sqrt{\@vbphantom\@smashboxa}}\box\@smashboxa}

\newbox\@smashboxa
\newbox\@smashboxb
\newbox\@smashboxc
\def\@arrayrule{\if@visible\@addtopreamble{\hskip -.5\arrayrulewidth
   \vrule \@width \arrayrulewidth\hskip -.5\arrayrulewidth}\fi}

\def\cline#1{\if@visible\@cline[#1]\fi}

\def\hline{\noalign{\ifnum0=`}\fi
    \if@visible \hrule \@height \arrayrulewidth
      \else \hrule \@width \z@
    \fi
    \futurelet \@tempa\@xhline}

\def\vline{\if@visible \vrule \@width \arrayrulewidth
            \else \vrule \@width \arrayrulewidth \@height \z@
           \@depth \z@ \fi}
\message{output,}
\let\@topfil\vfil

\def\@makecol{\if@makingslides\ifnum\c@page>\z@ \@extraslide\fi\fi
\ifvoid\footins \setbox\@outputbox\box\@cclv \let\@botfil\vfil
   \else\let\@botfil\relax\setbox\@outputbox
     \vbox{\unvbox\@cclv\vfil
           \vskip\skip\footins\footnoterule\unvbox\footins\vskip
            \z@ plus.1fil\relax}\fi
  \xdef\@freelist{\@freelist\@midlist}\gdef\@midlist{}\@combinefloats
     \setbox\@outputbox\vbox to\@colht{\boxmaxdepth\maxdepth
        \@topfil\unvbox\@outputbox\@botfil}\global\maxdepth\@maxdepth}

\def\@extraslide{\ifnum\c@note>\z@
    \ClassWarning{slides}{Note \thenote\space too long}\else
     \ifnum\c@overlay>\z@
        \ClassWarning{slides}{Overlay \theoverlay\space too long}\else
        \ClassWarning{slides}{Slide \theslide\space too long}\fi\fi}
\message{init}

\@visibletrue
\endinput
%%
%% End of file `slides.def'.