X-Git-Url: https://git.distorted.org.uk/~mdw/become/blobdiff_plain/69ec21eebb2517e058f384151f0a77cc7820500d..d6c74786e5fe77c64b93fab756486d64b2d6293d:/manual/syntax.sty?ds=sidebyside

diff --git a/manual/syntax.sty b/manual/syntax.sty
deleted file mode 100644
index e1270db..0000000
--- a/manual/syntax.sty
+++ /dev/null
@@ -1,817 +0,0 @@
-%%
-%% This is file `syntax.sty',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% syntax.dtx  (with options: `package')
-%% doafter.dtx  (with options: `macro')
-%% 
-%% IMPORTANT NOTICE
-%%
-%% syntax package -- typesetting syntax descriptions
-%% Copyright (c) 1996 Mark Wooding
-%%
-%% This program is free software; you can redistribute it and/or modify
-%% it under the terms of the GNU General Public License as published by
-%% the Free Software Foundation; either version 2 of the License, or
-%% (at your option) any later version.
-%%
-%% This program 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.  See the
-%% GNU General Public License for more details.
-%%
-%% You should have received a copy of the GNU General Public License
-%% along with this program; if not, write to the Free Software
-%% Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-%%
-\NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{syntax}
-                [1996/05/17 1.9 Syntax typesetting (MDW)]
-%% \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         \~}
-%%
-\DeclareOption{rounded}{\sd@roundtrue}
-\DeclareOption{square}{\sd@roundfalse}
-\DeclareOption{nounderscore}{\@uscorefalse}
-\newif\ifsd@round
-\newif\if@uscore\@uscoretrue
-\ExecuteOptions{square}
-\ProcessOptions
-\def\addspecial#1{%
-  \remspecial{#1}%
-  \expandafter\def\expandafter\dospecials\expandafter{\dospecials\do#1}%
-  \expandafter\def\expandafter\@santize\expandafter{%
-    \@sanitize\@makeother#1}%
-}
-\def\remspecial#1{%
-  \def\do##1{\ifnum`#1=`##1 \else\noexpand\do\noexpand##1\fi}%
-  \edef\dospecials{\dospecials}%
-  \def\@makeother##1{\ifnum`#1=`##1 \else%
-    \noexpand\@makeother\noexpand##1\fi}%
-  \edef\@sanitize{\@sanitize}%
-  \def\@makeother##1{\catcode`##112}%
-}
-\def\underscore{%
-  \leavevmode%
-  \kern.06em%
-  \vbox{%
-    \hrule\@width.6em\@depth.4ex\@height-.34ex%
-  }%
-  \ifdim\fontdimen\@ne\font=\z@%
-    \kern.06em%
-  \fi%
-}
-\let\usc@builtindischyphen\-
-\def\@uscore.{%
-  \ifmmode%
-    \expandafter\@firstoftwo%
-  \else%
-    \expandafter\@secondoftwo%
-  \fi%
-  \sb%
-  {\textunderscore\@ifnextchar_{}{\usc@builtindischyphen}}%
-}
-\if@uscore
-  \AtBeginDocument{%
-    \catcode`\_\active%
-    \begingroup%
-    \lccode`\~`\_%
-    \lowercase{\endgroup\def~{\protect\@uscore.}}%
-  }
-\fi
-\expandafter\let\csname?\string\textunderscore\endcsname\underscore
-\def\shortverb#1{%
-  \@ifundefined{cc@\string#1}{%
-    \addspecial#1%
-    \begingroup%
-    \lccode`\~`#1%
-    \lowercase{%
-      \endgroup%
-      \expandafter\let\csname mn@\string#1\endcsname~%
-      \expandafter\edef\csname cc@\string#1\endcsname{%
-        \catcode`\noexpand#1\the\catcode`#1%
-        \let\noexpand~\expandafter\noexpand%
-          \csname mn@\string#1\endcsname%
-        \noexpand\remspecial\noexpand#1%
-        \let\csname cc@\string#1\endcsname\relax%
-      }%
-      \def~{\verb~\syn@ttspace}%
-    }%
-    \catcode`#1\active%
-  }{%
-    \PackageWarning{syntax}{Character `\expandafter\@gobble\string#1'
-                            is already a verbatim\MessageBreak
-                            delimiter}%
-  }%
-}
-\def\unverb#1{%
-  \@ifundefined{cc@\string#1}{%
-    \PackageWarning{syntax}{Character `\expandafter\@gobble\string#1'
-                            is not a verbatim\MessageBreak
-                            delimiter}%
-  }{%
-    \csname cc@\string#1\endcsname%
-  }%
-}
-\newcommand{\syntleft}{$\langle$\normalfont\itshape}
-\newcommand{\syntright}{$\rangle$}
-\newcommand{\ulitleft}{\normalfont\ttfamily\syn@ttspace\frenchspacing}
-\newcommand{\ulitright}{}
-\newcommand{\litleft}{`\bgroup\ulitleft}
-\newcommand{\litright}{\ulitright\egroup'}
-\def\synt#1{\mbox{\syntleft{#1\/}\syntright}}
-\def\lit{\@ifstar{\lit@i\ulitleft\ulitright}{\lit@i\litleft\litright}}
-\def\lit@i#1#2#3{\mbox{#1{#3\/}#2}}
-\def\syn@ttspace@{\spaceskip.35em\@plus.2em\@minus.15em\relax}
-\def\ttthinspace{\let\syn@ttspace\syn@ttspace@}
-\def\ttthickspace{\let\syn@ttspace\@empty}
-\ttthinspace
-\def\readupto#1#2#3{%
-  \bgroup%
-  \verb@eol@error%
-  \let\do\@makeother\dospecials%
-  #2%
-  \catcode`#1\active%
-  \lccode`\~`#1%
-  \gdef\verb@balance@group{\verb@egroup%
-     \@latex@error{\noexpand\verb illegal in command argument}\@ehc}%
-  \def\@vhook{\verb@egroup#3}%
-  \aftergroup\verb@balance@group%
-  \lowercase{\let~\@vhook}%
-}
-\def\syn@assist#1#2#3#4#5{%
-  \mbox\bgroup%
-  \chardef\\`\\%
-  \chardef\>`\>%
-  \chardef\'`\'%
-  \chardef\"`\"%
-  \chardef\ `\ %
-  \def\ch##1{\char`##1}%
-  \def\act##1{%
-    \catcode`##1\active%
-    \begingroup%
-    \lccode`\~`##1%
-    \lowercase{\endgroup\def~}%
-  }%
-  #1%
-  \begingroup%
-  \readupto#3{%
-    \catcode`\\0%
-    \catcode`\ 10%
-    #2%
-  }{%
-    \/\endgroup#4\egroup#5%
-  }%
-}
-\begingroup
-\catcode`\<\active
-\catcode`\|\active
-\catcode`\"\active
-\catcode`\`\active
-\gdef\syn@shorts#1#2{%
-  \def<{%
-    #1%
-    \syn@assist%
-      \syntleft%
-      {\act_{\@foundunderscore}}%
-      >%
-      \syntright%
-      {#2}%
-  }%
-  \def`{%
-    #1%
-    \syn@assist%
-      \litleft%
-      \relax%
-      '%
-      \litright%
-      {#2}%
-  }%
-  \def"{%
-    #1%
-    \syn@assist%
-      \ulitleft%
-      \relax%
-      "%
-      \ulitright%
-      {#2}%
-  }%
-  \def|{\textbar}%
-}
-\endgroup
-\def\syntaxShortcuts#1#2{%
-  \syn@shorts{#1}{#2}%
-  \addspecial\`%
-  \addspecial\<%
-  \addspecial\|%
-  \addspecial\"%
-  \catcode`\|\active%
-  \catcode`\<\active%
-  \catcode`\"\active%
-  \catcode`\`\active%
-}
-\def\synshorts{\syntaxShortcuts\relax\relax}
-\def\synshortsoff{%
-  \catcode`\|12%
-  \catcode`\<12%
-  \catcode`\"12%
-  \catcode`\`12%
-}
-\def\syntax#{\bgroup\syntaxShortcuts\relax\relax\let\@let@token}
-\newskip\grammarparsep
-  \grammarparsep8\p@\@plus\p@\@minus\p@
-\newdimen\grammarindent
-  \grammarindent2em
-\newcommand{\grammarlabel}[2]{%
-  \synt{#1} \hfill#2%
-}
-\def\gr@implitem<#1> #2 {%
-  \sbox\z@{\hskip\labelsep\grammarlabel{#1}{#2}}%
-  \strut\@@par%
-  \vskip-\parskip%
-  \vskip-\baselineskip%
-  \hrule\@height\z@\@depth\z@\relax%
-  \item[\unhbox\z@]%
-  \catcode`\<\active%
-}
-\let\gr@leftsq\[
-\let\gr@rightsq\]
-\def\[{\gr@leftsq}
-\def\]{\gr@rightsq}
-\newenvironment{grammar}{%
-  \list{}{%
-    \labelwidth\grammarindent%
-    \leftmargin\grammarindent%
-    \advance\grammarindent\labelsep
-    \itemindent\z@%
-    \listparindent\z@%
-    \parsep\grammarparsep%
-  }%
-  \let\\\@normalcr
-  \syntaxShortcuts\relax\relax%
-  \def\alt{\\\llap{\textbar\quad}}%
-  \def\gr@setpar{%
-    \def\par{%
-      \parshape\@ne\@totalleftmargin\linewidth%
-      \@@par%
-      \catcode`\<12%
-      \everypar{%
-        \everypar{}%
-        \catcode`\<\active%
-        \gr@implitem%
-      }%
-    }%
-  }%
-  \gr@setpar%
-  \par%
-  \def\gr@endsyntdiag]{\end{syntdiag}\gr@setpar\par}%
-  \def\[{\@ifnextchar[{\begin{syntdiag}\@gobble}\gr@leftsq}%
-  \def\]{\@ifnextchar]\gr@endsyntdiag\gr@rightsq}%
-}{%
-  \@newlistfalse%
-  \everypar{}%
-  \endlist%
-}
-\newskip\sdstartspace
-\newskip\sdendspace
-\newskip\sdmidskip
-\newskip\sdtokskip
-\newskip\sdfinalskip
-\newdimen\sdrulewidth
-\newdimen\sdcirclediam
-\newdimen\sdindent
-\dimendef\sd@lower\z@
-\dimendef\sd@upper\tw@
-\dimendef\sd@mid4
-\dimendef\sd@topcirc6
-\dimendef\sd@botcirc8
-\def\sd@setsize{%
-  \sd@mid\ht\strutbox%
-  \advance\sd@mid-\dp\strutbox%
-  \sd@mid.5\sd@mid%
-  \sd@upper\sdrulewidth%
-    \advance\sd@upper\sd@mid%
-  \sd@lower\sdrulewidth%
-    \advance\sd@lower-\sd@mid%
-  \sd@topcirc-.5\sdcirclediam%
-    \advance\sd@topcirc\sd@mid%
-  \sd@botcirc-.5\sdcirclediam%
-    \advance\sd@botcirc-\sd@mid%
-}
-\newcommand{\sdsize}{%
-  \small%
-}
-\newcommand{\sdlengths}{%
-  \setlength{\sdstartspace}{1em minus 10pt}%
-  \setlength{\sdendspace}{1em minus 10pt}%
-  \setlength{\sdmidskip}{0.5em plus 0.0001fil}%
-  \setlength{\sdtokskip}{0.25em plus 0.0001fil}%
-  \setlength{\sdfinalskip}{0.5em plus 10000fil}%
-  \setlength{\sdrulewidth}{0.2pt}%
-  \setlength{\sdcirclediam}{8pt}%
-  \setlength{\sdindent}{0pt}%
-}
-\newif\ifsd@base
-\newif\ifsd@top
-\newif\ifsd@toplayer
-\newif\ifsd@backwards
-\def\sd@err{\PackageError{syntax}}
-\def\sd@arrow{%
-  \ht\tw@\z@%
-  \dp\tw@\z@%
-  \raise\sd@mid\box\tw@%
-  \egroup%
-}
-\def\sd@rightarr{%
-  \bgroup%
-  \setbox\tw@\hbox{\kern-6\p@\@linefnt\char'55}%
-  \sd@arrow%
-}
-\def\sd@leftarr{%
-  \bgroup%
-  \raise\sd@mid\hbox{\@linefnt\char'33\kern-6\p@}%
-  \sd@arrow%
-}
-\def\sd@uparr{%
-  \bgroup%
-  \setbox\tw@\hb@xt@\z@{\kern-\sdrulewidth\@linefnt\char'66\hss}%
-  \setbox\tw@\hbox{\lower10\p@\box\tw@}%
-  \sd@arrow%
-}
-\def\sd@downarr{%
-  \bgroup%
-  \setbox\tw@\hb@xt@\z@{\kern-\sdrulewidth\@linefnt\char'77\hss}%
-  \sd@arrow%
-}
-\def\sd@circ#1{%
-  \@getcirc\sdcirclediam%
-  \advance\@tempcnta#1%
-  \setbox\tw@\hbox{\lower\sdrulewidth%
-    \hbox{\@circlefnt\char\@tempcnta}}%
-  \wd\tw@\z@%
-  \leavevmode%
-}
-\def\sd@tlcirc{{%
-  \sd@circ3%
-  \ht\tw@\sdrulewidth%
-  \dp\tw@.5\sdcirclediam%
-  \kern-\tw@\sdrulewidth%
-  \raise\sd@mid\box\tw@%
-  \kern.5\sdcirclediam%
-}}
-\def\sd@trcirc{{%
-  \sd@circ0%
-  \ht\tw@\sdrulewidth%
-  \dp\tw@.5\sdcirclediam%
-  \kern.5\sdcirclediam%
-  \raise\sd@mid\box\tw@%
-}}
-\def\sd@blcirc{{%
-  \sd@circ2%
-  \ht\tw@.5\sdcirclediam%
-  \dp\tw@\sdrulewidth%
-  \kern-\tw@\sdrulewidth%
-  \raise\sd@mid\box\tw@%
-  \kern.5\sdcirclediam%
-}}
-\def\sd@brcirc{{%
-  \sd@circ1%
-  \ht\tw@.5\sdcirclediam%
-  \dp\tw@\sdrulewidth%
-  \kern.5\sdcirclediam%
-  \raise\sd@mid\box\tw@%
-}}
-\def\sd@llc#1{%
-  \hb@xt@.5\sdcirclediam{%
-    \sd@rule\hskip.5\sdcirclediam%
-    \hss%
-    #1%
-  }%
-}
-\def\sd@rlc#1{%
-  \hb@xt@.5\sdcirclediam{%
-    #1%
-    \hss%
-    \sd@rule\hskip.5\sdcirclediam%
-  }%
-}
-\def\sd@rule{\leaders\hrule\@height\sd@upper\@depth\sd@lower}
-\def\sd@gap#1{%
-  \ifsd@base%
-    \skip@#1%
-      \divide\skip\z@\tw@%
-    \nobreak\sd@rule\hskip\skip@%
-    \discretionary{%
-      \sd@qarrow{->}%
-    }{%
-      \hbox{%
-        \sd@qarrow{>-}%
-        \sd@rule\hskip\sdstartspace%
-        \sd@rule\hskip3.5\p@%
-      }%
-    }{%
-    }%
-    \nobreak\sd@rule\hskip\skip@%
-  \else%
-    \sd@rule\hskip#1%
-  \fi%
-}
-\def\syntdiag{%
-  \syntaxShortcuts\sd@tok@i\sd@tok@ii%
-  \@ifnextchar[\syntdiag@i{\syntdiag@i[]}%
-}
-\def\syntdiag@i[#1]{%
-  \sdsize\sdlengths%
-  #1%
-  \sd@setsize%
-  \list{}{%
-    \leftmargin\sdindent%
-    \rightmargin\leftmargin%
-    \labelsep\z@%
-    \labelwidth\z@%
-  }%
-  \item[]%
-  \parfillskip\z@%
-  \noindent%
-  \sd@qarrow{>>-}%
-  \nobreak\sd@rule\hskip\sdstartspace%
-  \sd@basetrue%
-  \sloppy%
-  \interlinepenalty100%
-  \hyphenpenalty0%
-  \catcode`\ 9%
-  \catcode`\^^M9%
-  \def\gr@leftsq{\begin{stack}\\}%
-  \def\gr@rightsq{\end{stack}}%
-  \def\({\begin{stack}}%
-  \def\){\end{stack}}%
-  \def\<{\begin{rep}}%
-  \def\>{\end{rep}}%
-  \let\\\sd@newline%
-  \ignorespaces%
-}
-\def\endsyntdiag{%
-  \unskip%
-  \nobreak\sd@rule\hskip\sdmidskip%
-  \sd@rule\hskip\sdfinalskip%
-  \sd@qarrow{-><}%
-  \endlist%
-}
-\@namedef{syntdiag*}{%
-  \syntaxShortcuts\sd@tok@i\sd@tok@ii%
-  \@ifnextchar[\syntdiag@s@i{\syntdiag@s@i[]}%
-}
-\def\syntdiag@s@i[#1]{%
-  \@ifnextchar[{\syntdiag@s@ii{#1}}{\syntdiag@s@iii{#1}{\hbox}}%
-}
-\def\syntdiag@s@ii#1[#2]{\syntdiag@s@iii{#1}{\hb@xt@#2}}
-\def\syntdiag@s@iii#1#2{%
-  \leavevmode%
-  #2\bgroup%
-  \let\@@left\left%
-  \let\@@right\right%
-  \def\left##1{\def\sd@startarr{##1}}%
-  \def\right##1{\def\sd@endarr{##1}}%
-  \left{>-}\right{->}%
-  \sdsize\sdlengths%
-  #1%
-  \sd@setsize%
-  \let\left\@@left%
-  \let\right\@@right%
-  \sd@qarrow\sd@startarr%
-  \sd@rule\hskip\sdmidskip%
-  \sd@basefalse%
-  \catcode`\ 9%
-  \catcode`\^^M9%
-  \ignorespaces%
-}
-\@namedef{endsyntdiag*}{%
-  \unskip%
-  \sd@rule\hskip\sdmidskip%
-  \sd@rule\hskip\sdfinalskip%
-  \sd@qarrow\sd@endarr%
-  \egroup%
-}
-\def\sd@qarrow#1{%
-  \begingroup%
-  \lccode`\~=`\<\lowercase{\def~{<}}%
-  \hbox{\csname sd@arr@#1\endcsname}%
-  \endgroup%
-}
-\@namedef{sd@arr@>>-}{\sd@rightarr\kern-.5\p@\sd@rightarr\kern-\p@}
-\@namedef{sd@arr@>-}{\sd@rightarr\kern-\p@}
-\@namedef{sd@arr@->}{\sd@rightarr}
-\@namedef{sd@arr@-><}{\sd@rightarr\kern-\p@\sd@leftarr}
-\@namedef{sd@arr@...}{$\cdots$}
-\@namedef{sd@arr@-}{}
-\def\sd@newline{\@ifstar{\vadjust{\penalty\@M}\sd@nl@i}\sd@nl@i}
-\def\sd@nl@i{\@ifnextchar[\sd@nl@ii\sd@nl@iii}
-\def\sd@nl@ii[#1]{\vspace{#1}\sd@nl@iii}
-\def\sd@nl@iii{%
-  \nobreak\sd@rule\hskip\sdmidskip%
-  \sd@rule\hskip\sdfinalskip%
-  \kern-3\p@%
-  \sd@rightarr%
-  \newline%
-  \sd@rightarr%
-  \nobreak\sd@rule\hskip\sdstartspace%
-  \sd@rule\hskip3.5\p@%
-}
-\def\sdbox#1{%
-  \@tempskipa#1\relax%
-  \sd@gap\@tempskipa%
-  \setbox\z@\hbox\bgroup%
-    \begingroup%
-    \catcode`\ 10%
-    \catcode`\^^M5%
-    \synshortsoff%
-}
-\def\endsdbox{%
-    \endgroup%
-  \egroup%
-  \@tempdima\ht\z@%
-  \advance\@tempdima-\dp\z@%
-  \advance\@tempdima-\tw@\sd@mid%
-  \lower.5\@tempdima\box\z@%
-  \sd@gap\@tempskipa%
-}
-\def\sd@tok@i{%
-  \sdbox\sdtokskip%
-  \strut%
-  \space%
-}
-\def\sd@tok@ii{%
-  \space%
-  \endsdbox%
-}
-\def\tok#{%
-  \sdbox\sdtokskip%
-  \strut%
-  \enspace%
-  \syntaxShortcuts\relax\relax%
-  \doafter\sd@tok%
-}
-\def\sd@tok{%
-  \enspace%
-  \endsdbox%
-}
-\newcommand\stack[1][t]{%
-  \sd@gap\sdmidskip%
-  \begingroup\sd@basefalse%
-  \sd@toplayertrue%
-  \let\\\sd@stackcr%
-  \if#1t%
-    \let\@tempa\vtop%
-    \sd@toptrue%
-    \ifsd@round\llap{\sd@trcirc\kern\tw@\sdrulewidth}\fi%
-  \else\if#1b%
-    \let\@tempa\vbox%
-    \sd@topfalse%
-    \ifsd@round\llap{\sd@brcirc\kern\tw@\sdrulewidth}\fi%
-  \else%
-    \sd@err{Bad position argument passed to stack}%
-           {The positioning argument must be one of `t' or `b'.  I%
-            have^^Jassumed you meant to type `t'.}%
-    \let\@tempa\vtop%
-  \fi\fi%
-  \@tempa\bgroup%
-  \offinterlineskip%
-  \ialign\bgroup%
-    ##\cr%
-  \setbox\z@\hbox\bgroup%
-    \strut%
-}
-\def\endstack{%
-  \egroup%
-  \ifsd@toplayer%
-    \sd@dostack\sd@upper\sd@lower\relax\relax%
-  \else%
-    \ifsd@round%
-      \ifsd@top%
-        \sd@dostack{\ht\z@}\sd@botcirc\sd@blcirc\sd@brcirc%
-      \else%
-        \sd@dostack{\ht\z@}\sd@botcirc\relax\relax%
-      \fi%
-    \else%
-      \sd@dostack{\ht\z@}\sd@lower\relax\relax%
-    \fi%
-  \fi%
-  \egroup%
-  \egroup%
-  \ifsd@round%
-    \ifsd@top
-      \rlap{\kern\tw@\sdrulewidth\sd@tlcirc}%
-    \else%
-      \rlap{\kern\tw@\sdrulewidth\sd@blcirc}%
-    \fi%
-  \fi%
-  \endgroup\sd@gap\sdmidskip%
-}
-\def\sd@stackcr{%
-  \egroup%
-  \ifsd@toplayer%
-    \ifsd@round%
-      \ifsd@top%
-        \sd@dostack\sd@topcirc{\dp\z@}\relax\relax%
-      \else%
-        \sd@dostack\sd@topcirc{\dp\z@}\sd@tlcirc\sd@trcirc%
-      \fi%
-    \else%
-      \sd@dostack\sd@upper{\dp\z@}\relax\relax%
-    \fi%
-  \else%
-    \ifsd@round%
-      \ifsd@top%
-        \sd@dostack{\ht\z@}{\dp\z@}\sd@blcirc\sd@brcirc%
-      \else%
-        \sd@dostack{\ht\z@}{\dp\z@}\sd@tlcirc\sd@trcirc%
-      \fi%
-    \else%
-      \sd@dostack{\ht\z@}{\dp\z@}\relax\relax%
-    \fi%
-  \fi%
-  \sd@toplayerfalse%
-  \setbox\z@\hbox\bgroup%
-    \strut%
-}
-\def\sd@dostack#1#2#3#4{%
-  \@tempdima#1%
-  \@tempdimb#2%
-  \kern-\tw@\sdrulewidth%
-  \vrule\@height\@tempdima\@depth\@tempdimb\@width\tw@\sdrulewidth%
-  #3%
-  \sd@rule\hfill%
-  \sd@gap\sdtokskip%
-  \unhbox\z@%
-  \sd@gap\sdtokskip%
-  \sd@rule\hfill%
-  #4%
-  \vrule\@height\@tempdima\@depth\@tempdimb\@width\tw@\sdrulewidth%
-  \kern-\tw@\sdrulewidth%
-  \cr%
-}
-\newcommand\rep[1][t]{%
-  \sd@gap\sdmidskip%
-  \begingroup\sd@basefalse%
-  \ifsd@backwards\sd@backwardsfalse\else\sd@backwardstrue\fi%
-   \let\\\sd@loop%
-  \if#1t%
-    \let\@tempa\vbox%
-    \sd@toptrue%
-  \else\if#1b%
-    \let\@tempa\vtop%
-    \sd@topfalse%
-  \else%
-    \sd@err{Bad position argument passed to loop}%
-           {The positioning argument must be `t' or `b'.  I have^^J%
-            assumed you meant to type `t'.}%
-    \let\@tempa\vbox%
-    \sd@toptrue%
-  \fi\fi%
-  \@tempa\bgroup%
-  \setbox\tw@\copy\strutbox%
-  \setbox\z@\hbox\bgroup\strut%
-}
-\def\endrep{%
-  \egroup%
-  \ifsd@top%
-    \ifsd@round%
-      \sd@doloop\tw@\z@\relax\relax%
-        \sd@tlcirc\sd@trcirc{\sd@rlc\sd@blcirc}{\sd@llc\sd@brcirc}%
-    \else%
-      \sd@doloop\tw@\z@\relax\sd@downarr\relax\relax\relax\relax%
-    \fi%
-  \else%
-    \ifsd@round%
-      \sd@doloop\z@\tw@\relax\relax%
-        {\sd@rlc\sd@tlcirc}{\sd@llc\sd@trcirc}\sd@blcirc\sd@brcirc%
-    \else%
-      \sd@doloop\z@\tw@\sd@uparr\relax\relax\relax\relax\relax%
-    \fi%
-  \fi%
-  \egroup%
-  \endgroup\sd@gap\sdmidskip%
-}
-\def\sd@loop{%
-  \egroup%
-  \def\\{\sd@err{Too many \string\\\space commands in loop}\@ehc}%
-  \setbox\tw@\hbox\bgroup\strut%
-}
-\def\sd@doloop#1#2#3#4#5#6#7#8{%
-  \@tempdima\dp#1\relax%
-  \@tempdimb\ht#2\relax%
-  \offinterlineskip%
-  \ialign{%
-    ##\cr%
-    \ifsd@round%
-      \sd@doloop@i#1#3\sd@topcirc\@tempdima{#5}{#6}%
-      \sd@doloop@i#2#4\@tempdimb\sd@botcirc{#7}{#8}%
-    \else%
-      \sd@doloop@i#1#3\sd@upper\@tempdima{#5}{#6}%
-      \sd@doloop@i#2#4\@tempdimb\sd@lower{#7}{#8}%
-    \fi%
-  }%
-}
-\def\sd@doloop@i#1#2#3#4#5#6{%
-  \ifsd@backwards#2\fi%
-  \kern-\tw@\sdrulewidth%
-  \vrule\@height#3\@depth#4\@width\tw@\sdrulewidth%
-  #5%
-  \sd@rule\hfill%
-  \sd@gap\sdtokskip%
-  \unhbox#1%
-  \sd@gap\sdtokskip%
-  \sd@rule\hfill%
-  #6%
-  \vrule\@height#3\@depth#4\@width\tw@\sdrulewidth%
-  \ifsd@backwards\else#2\fi%
-  \kern-\tw@\sdrulewidth%
-  \cr%
-}
-%%
-%% doafter package -- insert a token really after a group
-%% Copyright (c) 1996 Peter Schmitt and Mark Wooding
-%%
-\let\@@aftergroup\aftergroup
-\def\doafter#1{%
-  \def\@tempa{\@@aftergroup#1}%
-  \afterassignment\doafter@i\let\@let@token%
-}
-\def\doafter@i{%
-  \@let@token%
-  \let\aftergroup\@my@aftergroup%
-  \@@aftergroup\@prepare@after\@tempa%
-}
-\def\ag@cnt@local{0 }
-\let\ag@cnt@global\ag@cnt@local
-\def\@my@aftergroup{%
-  \begingroup%
-    \count@\ag@cnt@local%
-    \advance\count@\@ne%
-    \xdef\ag@cnt@global{\the\count@\space}%
-  \endgroup%
-  \let\ag@cnt@local\ag@cnt@global%
-  \@@aftergroup\@after@token\@@aftergroup%
-}
-\def\@after@token{%
-  \@start@after@group%
-  \@after@token%
-}
-\def\@start@after@group{%
-  \begingroup%
-  \count@\ag@cnt@global%
-  \clubpenalty\ag@cnt@local%
-  \let\@after@token\@after@token@i%
-}
-\def\@after@token@i{%
-  \advance\count@\m@ne%
-  \ifnum\count@=\clubpenalty%
-    \global\let\ag@cnt@global\ag@cnt@local%
-    \expandafter\@after@aftertoken\expandafter\@after@all%
-  \else%
-    \expandafter\@@aftergroup%
-  \fi%
-}
-\let\@after@all\endgroup
-\def\@prepare@after{%
-  \ifx\ag@cnt@local\ag@cnt@global\else%
-    \expandafter\@prepare@after@i%
-  \fi%
-}
-\def\@prepare@after@i#1{%
-  \@start@after@group%
-  \def\@after@all{\@@aftergroup#1\endgroup}%
-}
-\def\@after@aftertoken#1{%
-  \let\bgroup\relax\let\egroup\relax%
-  \toks@{#1}%
-  \futurelet\@let@token\@after@aftertoken@i%
-}
-\def\@after@aftertoken@i{%
-  \ifcat\noexpand\@let@token{%
-    \@@aftergroup{%
-  \else\ifcat\noexpand\@let@token}%
-    \@@aftergroup}%
-  \else%
-    \def\@tempa##1{\@@aftergroup##1\the\toks@}%
-    \expandafter\expandafter\expandafter\@tempa%
-  \fi\fi%
-}
-\endinput
-%%
-%% End of file `syntax.sty'.
