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Annotation of coherent/g/usr/bin/gzip/texinfo.tex, revision 1.1

1.1     ! root        1: %% TeX macros to handle texinfo files
        !             2: 
        !             3: %   Copyright (C) 1985, 1986, 1988, 1990, 1991 Free Software Foundation, Inc.
        !             4: 
        !             5: %This texinfo.tex file is free software; you can redistribute it and/or
        !             6: %modify it under the terms of the GNU General Public License as
        !             7: %published by the Free Software Foundation; either version 2, or (at
        !             8: %your option) any later version.
        !             9: 
        !            10: %This texinfo.tex file is distributed in the hope that it will be
        !            11: %useful, but WITHOUT ANY WARRANTY; without even the implied warranty
        !            12: %of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            13: %General Public License for more details.
        !            14: 
        !            15: %You should have received a copy of the GNU General Public License
        !            16: %along with this texinfo.tex file; see the file COPYING.  If not, write
        !            17: %to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
        !            18: %USA.
        !            19: 
        !            20: 
        !            21: %In other words, you are welcome to use, share and improve this program.
        !            22: %You are forbidden to forbid anyone else to use, share and improve
        !            23: %what you give them.   Help stamp out software-hoarding!
        !            24: 
        !            25: \def\texinfoversion{2.73}
        !            26: \message{Loading texinfo package [Version \texinfoversion]:}
        !            27: \message{}
        !            28: 
        !            29: % Print the version number if in a .fmt file.
        !            30: \everyjob{\message{[Texinfo version \texinfoversion]}\message{}}
        !            31: 
        !            32: % Save some parts of plain tex whose names we will redefine.
        !            33: 
        !            34: \let\ptexlbrace=\{
        !            35: \let\ptexrbrace=\}
        !            36: \let\ptexdots=\dots
        !            37: \let\ptexdot=\.
        !            38: \let\ptexstar=\*
        !            39: \let\ptexend=\end
        !            40: \let\ptexbullet=\bullet
        !            41: \let\ptexb=\b
        !            42: \let\ptexc=\c
        !            43: \let\ptexi=\i
        !            44: \let\ptext=\t
        !            45: \let\ptexl=\l
        !            46: \let\ptexL=\L
        !            47: 
        !            48: \def\tie{\penalty 10000\ }     % Save plain tex definition of ~.
        !            49: 
        !            50: \message{Basics,}
        !            51: \chardef\other=12
        !            52: 
        !            53: % If this character appears in an error message or help string, it
        !            54: % starts a new line in the output.
        !            55: \newlinechar = `^^J
        !            56: 
        !            57: \hyphenation{ap-pen-dix}
        !            58: \hyphenation{mini-buf-fer mini-buf-fers}
        !            59: \hyphenation{eshell}
        !            60: 
        !            61: % Margin to add to right of even pages, to left of odd pages.
        !            62: \newdimen \bindingoffset  \bindingoffset=0pt
        !            63: \newdimen \normaloffset   \normaloffset=\hoffset
        !            64: \newdimen\pagewidth \newdimen\pageheight
        !            65: \pagewidth=\hsize \pageheight=\vsize
        !            66: 
        !            67: % Sometimes it is convenient to have everything in the transcript file
        !            68: % and nothing on the terminal.  We don't just call \tracingall here,
        !            69: % since that produces some useless output on the terminal.
        !            70: %
        !            71: \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
        !            72: \def\loggingall{\tracingcommands2 \tracingstats2 
        !            73:    \tracingpages1 \tracingoutput1 \tracinglostchars1 
        !            74:    \tracingmacros2 \tracingparagraphs1 \tracingrestores1 
        !            75:    \showboxbreadth\maxdimen\showboxdepth\maxdimen
        !            76: }%
        !            77: 
        !            78: %---------------------Begin change-----------------------
        !            79: %
        !            80: %%%% For @cropmarks command.
        !            81: % Dimensions to add cropmarks at corners Added by P. A. MacKay, 12 Nov. 1986
        !            82: %
        !            83: \newdimen\cornerlong \newdimen\cornerthick
        !            84: \newdimen \topandbottommargin
        !            85: \newdimen \outerhsize \newdimen \outervsize
        !            86: \cornerlong=1pc\cornerthick=.3pt       % These set size of cropmarks
        !            87: \outerhsize=7in
        !            88: %\outervsize=9.5in
        !            89: % Alternative @smallbook page size is 9.25in
        !            90: \outervsize=9.25in
        !            91: \topandbottommargin=.75in
        !            92: %
        !            93: %---------------------End change-----------------------
        !            94: 
        !            95: % \onepageout takes a vbox as an argument.  Note that \pagecontents
        !            96: % does insertions itself, but you have to call it yourself.
        !            97: \chardef\PAGE=255  \output={\onepageout{\pagecontents\PAGE}}
        !            98: \def\onepageout#1{\hoffset=\normaloffset
        !            99: \ifodd\pageno  \advance\hoffset by \bindingoffset
        !           100: \else \advance\hoffset by -\bindingoffset\fi
        !           101: {\escapechar=`\\\relax % makes sure backslash is used in output files.
        !           102: \shipout\vbox{{\let\hsize=\pagewidth \makeheadline} \pagebody{#1}%
        !           103: {\let\hsize=\pagewidth \makefootline}}}%
        !           104: \advancepageno \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
        !           105: 
        !           106: %%%% For @cropmarks command %%%%
        !           107: 
        !           108: % Here is a modification of the main output routine for Near East Publications
        !           109: % This provides right-angle cropmarks at all four corners.
        !           110: % The contents of the page are centerlined into the cropmarks,
        !           111: % and any desired binding offset is added as an \hskip on either
        !           112: % site of the centerlined box.  (P. A. MacKay, 12 November, 1986)
        !           113: %
        !           114: \def\croppageout#1{\hoffset=0pt % make sure this doesn't mess things up
        !           115:                 \shipout
        !           116:                 \vbox to \outervsize{\hsize=\outerhsize
        !           117:                  \vbox{\line{\ewtop\hfill\ewtop}}
        !           118:                  \nointerlineskip
        !           119:                  \line{\vbox{\moveleft\cornerthick\nstop}
        !           120:                        \hfill
        !           121:                        \vbox{\moveright\cornerthick\nstop}}
        !           122:                  \vskip \topandbottommargin
        !           123:                  \centerline{\ifodd\pageno\hskip\bindingoffset\fi
        !           124:                        \vbox{
        !           125:                        {\let\hsize=\pagewidth \makeheadline}
        !           126:                        \pagebody{#1}
        !           127:                        {\let\hsize=\pagewidth \makefootline}}
        !           128:                        \ifodd\pageno\else\hskip\bindingoffset\fi}
        !           129:                 \vskip \topandbottommargin plus1fill minus1fill
        !           130:                  \boxmaxdepth\cornerthick
        !           131:                  \line{\vbox{\moveleft\cornerthick\nsbot}
        !           132:                        \hfill
        !           133:                        \vbox{\moveright\cornerthick\nsbot}}
        !           134:                  \nointerlineskip
        !           135:                  \vbox{\line{\ewbot\hfill\ewbot}}
        !           136:        }
        !           137:   \advancepageno 
        !           138:   \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
        !           139: %
        !           140: % Do @cropmarks to get crop marks
        !           141: \def\cropmarks{\let\onepageout=\croppageout }
        !           142: 
        !           143: \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
        !           144: {\catcode`\@ =11
        !           145: \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
        !           146: \dimen@=\dp#1 \unvbox#1
        !           147: \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
        !           148: \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
        !           149: }
        !           150: 
        !           151: %
        !           152: % Here are the rules for the cropmarks.  Note that they are
        !           153: % offset so that the space between them is truly \outerhsize or \outervsize
        !           154: % (P. A. MacKay, 12 November, 1986)
        !           155: %
        !           156: \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
        !           157: \def\nstop{\vbox
        !           158:   {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
        !           159: \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
        !           160: \def\nsbot{\vbox
        !           161:   {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
        !           162: 
        !           163: % Parse an argument, then pass it to #1.
        !           164: % The argument can be delimited with [...] or with "..." or braces
        !           165: % or it can be a whole line.
        !           166: % #1 should be a macro which expects
        !           167: % an ordinary undelimited TeX argument.
        !           168: 
        !           169: \def\parsearg #1{\let\next=#1\begingroup\obeylines\futurelet\temp\parseargx}
        !           170: 
        !           171: \def\parseargx{%
        !           172: \ifx \obeyedspace\temp \aftergroup\parseargdiscardspace \else%
        !           173: \aftergroup \parseargline %
        !           174: \fi \endgroup}
        !           175: 
        !           176: {\obeyspaces %
        !           177: \gdef\parseargdiscardspace {\begingroup\obeylines\futurelet\temp\parseargx}}
        !           178: 
        !           179: \gdef\obeyedspace{\ }
        !           180: 
        !           181: \def\parseargline{\begingroup \obeylines \parsearglinex}
        !           182: {\obeylines %
        !           183: \gdef\parsearglinex #1^^M{\endgroup \next {#1}}}
        !           184: 
        !           185: \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
        !           186: 
        !           187: %% These are used to keep @begin/@end levels from running away
        !           188: %% Call \inENV within environments (after a \begingroup)
        !           189: \newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
        !           190: \def\ENVcheck{%
        !           191: \ifENV\errmessage{Still within an environment.  Type Return to continue.}
        !           192: \endgroup\fi} % This is not perfect, but it should reduce lossage
        !           193: 
        !           194: % @begin foo  is the same as @foo, for now.
        !           195: \newhelp\EMsimple{Type <Return> to continue}
        !           196: 
        !           197: \outer\def\begin{\parsearg\beginxxx}
        !           198: 
        !           199: \def\beginxxx #1{%
        !           200: \expandafter\ifx\csname #1\endcsname\relax
        !           201: {\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
        !           202: \csname #1\endcsname\fi}
        !           203: 
        !           204: %% @end foo executes the definition of \Efoo.
        !           205: %% foo can be delimited by doublequotes or brackets.
        !           206: 
        !           207: \def\end{\parsearg\endxxx}
        !           208: 
        !           209: \def\endxxx #1{%
        !           210: \expandafter\ifx\csname E#1\endcsname\relax
        !           211: \expandafter\ifx\csname #1\endcsname\relax
        !           212: \errmessage{Undefined command @end #1}\else
        !           213: \errorE{#1}\fi\fi
        !           214: \csname E#1\endcsname}
        !           215: \def\errorE#1{
        !           216: {\errhelp=\EMsimple \errmessage{@end #1 not within #1 environment}}}
        !           217: 
        !           218: % Single-spacing is done by various environments.
        !           219: 
        !           220: \newskip\singlespaceskip \singlespaceskip = \baselineskip
        !           221: \def\singlespace{%
        !           222: {\advance \baselineskip by -\singlespaceskip
        !           223: \kern \baselineskip}%
        !           224: \baselineskip=\singlespaceskip
        !           225: }
        !           226: 
        !           227: %% Simple single-character @ commands
        !           228: 
        !           229: % @@ prints an @
        !           230: % Kludge this until the fonts are right (grr).
        !           231: \def\@{{\tt \char '100}}
        !           232: 
        !           233: % Define @` and @' to be the same as ` and '
        !           234: % but suppressing ligatures.
        !           235: \def\`{{`}}
        !           236: \def\'{{'}}
        !           237: 
        !           238: % Used to generate quoted braces.
        !           239: 
        !           240: \def\mylbrace {{\tt \char '173}}
        !           241: \def\myrbrace {{\tt \char '175}}
        !           242: \let\{=\mylbrace
        !           243: \let\}=\myrbrace
        !           244: 
        !           245: % @: forces normal size whitespace following.
        !           246: \def\:{\spacefactor=1000 }
        !           247: 
        !           248: % @* forces a line break.
        !           249: \def\*{\hfil\break\hbox{}\ignorespaces}
        !           250: 
        !           251: % @. is an end-of-sentence period.
        !           252: \def\.{.\spacefactor=3000 }
        !           253: 
        !           254: % @w prevents a word break.  Without the \leavevmode, @w at the
        !           255: % beginning of a paragraph, when TeX is still in vertical mode, would
        !           256: % produce a whole line of output instead of starting the paragraph.
        !           257: \def\w#1{\leavevmode\hbox{#1}}
        !           258: 
        !           259: % @group ... @end group forces ... to be all on one page, by enclosing
        !           260: % it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
        !           261: % to keep its height that of a normal line.  According to the rules for
        !           262: % \topskip (p.114 of the TeXbook), the glue inserted is
        !           263: % max (\topskip - \ht (first item), 0).  If that height is large,
        !           264: % therefore, no glue is inserted, and the space between the headline and
        !           265: % the text is small, which looks bad.
        !           266: % 
        !           267: \def\group{\begingroup
        !           268:   \ifnum\catcode13=\active \else
        !           269:     \errhelp = \groupinvalidhelp
        !           270:     \errmessage{@group invalid in context where filling is enabled}%
        !           271:   \fi
        !           272:   \def\Egroup{\egroup\endgroup}%
        !           273:   \vtop\bgroup
        !           274: }
        !           275: %
        !           276: % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
        !           277: % message, so this ends up printing `@group can only ...'.
        !           278: % 
        !           279: \newhelp\groupinvalidhelp{%
        !           280: group can only be used in environments such as @example,^^J%
        !           281: where each line of input produces a line of output.}
        !           282: 
        !           283: % @need space-in-mils
        !           284: % forces a page break if there is not space-in-mils remaining.
        !           285: 
        !           286: \newdimen\mil  \mil=0.001in
        !           287: 
        !           288: \def\need{\parsearg\needx}
        !           289: 
        !           290: % Old definition--didn't work.
        !           291: %\def\needx #1{\par %
        !           292: %% This method tries to make TeX break the page naturally
        !           293: %% if the depth of the box does not fit.
        !           294: %{\baselineskip=0pt%
        !           295: %\vtop to #1\mil{\vfil}\kern -#1\mil\penalty 10000
        !           296: %\prevdepth=-1000pt
        !           297: %}}
        !           298: 
        !           299: \def\needx#1{%
        !           300:   % Go into vertical mode, so we don't make a big box in the middle of a
        !           301:   % paragraph.
        !           302:   \par
        !           303:   %
        !           304:   % Don't add any leading before our big empty box, but allow a page
        !           305:   % break, since the best break might be right here.
        !           306:   \allowbreak
        !           307:   \nointerlineskip
        !           308:   \vtop to #1\mil{\vfil}%
        !           309:   % 
        !           310:   % TeX does not even consider page breaks if a penalty added to the
        !           311:   % main vertical list is 10000 or more.  But in order to see if the
        !           312:   % empty box we just added fits on the page, we must make it consider
        !           313:   % page breaks.  On the other hand, we don't want to actually break the
        !           314:   % page after the empty box.  So we use a penalty of 9999.
        !           315:   % 
        !           316:   % There is an extremely small chance that TeX will actually break the
        !           317:   % page at this \penalty, if there are no other feasible breakpoints in
        !           318:   % sight.  (If the user is using lots of big @group commands, which
        !           319:   % almost-but-not-quite fill up a page, TeX will have a hard time doing
        !           320:   % good page breaking, for example.)  However, I could not construct an
        !           321:   % example where a page broke at this \penalty; if it happens in a real
        !           322:   % document, then we can reconsider our strategy.
        !           323:   \penalty9999
        !           324:   %
        !           325:   % Back up by the size of the box, whether we did a page break or not.
        !           326:   \kern -#1\mil
        !           327:   %
        !           328:   % Do not allow a page break right after this kern.
        !           329:   \nobreak
        !           330: }
        !           331: 
        !           332: % @br   forces paragraph break
        !           333: 
        !           334: \let\br = \par
        !           335: 
        !           336: % @dots{}  output some dots
        !           337: 
        !           338: \def\dots{$\ldots$}
        !           339: 
        !           340: % @page    forces the start of a new page
        !           341: 
        !           342: \def\page{\par\vfill\supereject}
        !           343: 
        !           344: % @exdent text....
        !           345: % outputs text on separate line in roman font, starting at standard page margin
        !           346: 
        !           347: % This records the amount of indent in the innermost environment.
        !           348: % That's how much \exdent should take out.
        !           349: \newskip\exdentamount
        !           350: 
        !           351: % This defn is used inside fill environments such as @defun.
        !           352: \def\exdent{\parsearg\exdentyyy}
        !           353: \def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}}
        !           354: 
        !           355: % This defn is used inside nofill environments such as @example.
        !           356: \def\nofillexdent{\parsearg\nofillexdentyyy}
        !           357: \def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount
        !           358: \leftline{\hskip\leftskip{\rm#1}}}}
        !           359: 
        !           360: %\hbox{{\rm#1}}\hfil\break}}
        !           361: 
        !           362: % @include file    insert text of that file as input.
        !           363: 
        !           364: \def\include{\parsearg\includezzz}
        !           365: \def\includezzz #1{{\def\thisfile{#1}\input #1
        !           366: }}
        !           367: 
        !           368: \def\thisfile{}
        !           369: 
        !           370: % @center line   outputs that line, centered
        !           371: 
        !           372: \def\center{\parsearg\centerzzz}
        !           373: \def\centerzzz #1{{\advance\hsize by -\leftskip
        !           374: \advance\hsize by -\rightskip
        !           375: \centerline{#1}}}
        !           376: 
        !           377: % @sp n   outputs n lines of vertical space
        !           378: 
        !           379: \def\sp{\parsearg\spxxx}
        !           380: \def\spxxx #1{\par \vskip #1\baselineskip}
        !           381: 
        !           382: % @comment ...line which is ignored...
        !           383: % @c is the same as @comment
        !           384: % @ignore ... @end ignore  is another way to write a comment
        !           385: 
        !           386: \def\comment{\catcode 64=\other \catcode 123=\other \catcode 125=\other%
        !           387: \parsearg \commentxxx}
        !           388: 
        !           389: \def\commentxxx #1{\catcode 64=0 \catcode 123=1 \catcode 125=2 }
        !           390: 
        !           391: \let\c=\comment
        !           392: 
        !           393: % Prevent errors for section commands.
        !           394: % Used in @ignore and in failing conditionals.
        !           395: \def\ignoresections{%
        !           396: \let\chapter=\relax
        !           397: \let\unnumbered=\relax
        !           398: \let\top=\relax
        !           399: \let\unnumberedsec=\relax
        !           400: \let\unnumberedsection=\relax
        !           401: \let\unnumberedsubsec=\relax
        !           402: \let\unnumberedsubsection=\relax
        !           403: \let\unnumberedsubsubsec=\relax
        !           404: \let\unnumberedsubsubsection=\relax
        !           405: \let\section=\relax
        !           406: \let\subsec=\relax
        !           407: \let\subsubsec=\relax
        !           408: \let\subsection=\relax
        !           409: \let\subsubsection=\relax
        !           410: \let\appendix=\relax
        !           411: \let\appendixsec=\relax
        !           412: \let\appendixsection=\relax
        !           413: \let\appendixsubsec=\relax
        !           414: \let\appendixsubsection=\relax
        !           415: \let\appendixsubsubsec=\relax
        !           416: \let\appendixsubsubsection=\relax
        !           417: \let\contents=\relax
        !           418: \let\smallbook=\relax
        !           419: \let\titlepage=\relax
        !           420: }
        !           421: 
        !           422: \def\ignore{\begingroup\ignoresections
        !           423: % Make sure that spaces turn into tokens that match what \ignorexxx wants.
        !           424: \catcode32=10
        !           425: \ignorexxx}
        !           426: \long\def\ignorexxx #1\end ignore{\endgroup\ignorespaces}
        !           427: 
        !           428: \def\direntry{\begingroup\direntryxxx}
        !           429: \long\def\direntryxxx #1\end direntry{\endgroup\ignorespaces}
        !           430: 
        !           431: % Conditionals to test whether a flag is set.
        !           432: 
        !           433: \def\ifset{\begingroup\ignoresections\parsearg\ifsetxxx}
        !           434: 
        !           435: \def\ifsetxxx #1{\endgroup
        !           436: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\ifsetfail
        !           437: \else \let\temp=\relax \fi
        !           438: \temp}
        !           439: \def\Eifset{}
        !           440: \def\ifsetfail{\begingroup\ignoresections\ifsetfailxxx}
        !           441: \long\def\ifsetfailxxx #1\end ifset{\endgroup\ignorespaces}
        !           442: 
        !           443: \def\ifclear{\begingroup\ignoresections\parsearg\ifclearxxx}
        !           444: 
        !           445: \def\ifclearxxx #1{\endgroup
        !           446: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\relax
        !           447: \else \let\temp=\ifclearfail \fi
        !           448: \temp}
        !           449: \def\Eifclear{}
        !           450: \def\ifclearfail{\begingroup\ignoresections\ifclearfailxxx}
        !           451: \long\def\ifclearfailxxx #1\end ifclear{\endgroup\ignorespaces}
        !           452: 
        !           453: % @set foo     to set the flag named foo.
        !           454: % @clear foo   to clear the flag named foo.
        !           455: \def\set{\parsearg\setxxx}
        !           456: \def\setxxx #1{
        !           457: \expandafter\let\csname IF#1\endcsname=\set}
        !           458: 
        !           459: \def\clear{\parsearg\clearxxx}
        !           460: \def\clearxxx #1{
        !           461: \expandafter\let\csname IF#1\endcsname=\relax}
        !           462: 
        !           463: % Some texinfo constructs that are trivial in tex
        !           464: 
        !           465: \def\iftex{}
        !           466: \def\Eiftex{}
        !           467: \def\ifinfo{\begingroup\ignoresections\ifinfoxxx}
        !           468: \long\def\ifinfoxxx #1\end ifinfo{\endgroup\ignorespaces}
        !           469: 
        !           470: \long\def\menu #1\end menu{}
        !           471: \def\asis#1{#1}
        !           472: 
        !           473: % @math means output in math mode.
        !           474: % We don't use $'s directly in the definition of \math because control
        !           475: % sequences like \math are expanded when the toc file is written.  Then,
        !           476: % we read the toc file back, the $'s will be normal characters (as they
        !           477: % should be, according to the definition of Texinfo).  So we must use a
        !           478: % control sequence to switch into and out of math mode.
        !           479: % 
        !           480: % This isn't quite enough for @math to work properly in indices, but it
        !           481: % seems unlikely it will ever be needed there.
        !           482: % 
        !           483: \let\implicitmath = $
        !           484: \def\math#1{\implicitmath #1\implicitmath}
        !           485: 
        !           486: \def\node{\ENVcheck\parsearg\nodezzz}
        !           487: \def\nodezzz#1{\nodexxx [#1,]}
        !           488: \def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
        !           489: \let\lastnode=\relax
        !           490: 
        !           491: \def\donoderef{\ifx\lastnode\relax\else
        !           492: \expandafter\expandafter\expandafter\setref{\lastnode}\fi
        !           493: \let\lastnode=\relax}
        !           494: 
        !           495: \def\unnumbnoderef{\ifx\lastnode\relax\else
        !           496: \expandafter\expandafter\expandafter\unnumbsetref{\lastnode}\fi
        !           497: \let\lastnode=\relax}
        !           498: 
        !           499: \def\appendixnoderef{\ifx\lastnode\relax\else
        !           500: \expandafter\expandafter\expandafter\appendixsetref{\lastnode}\fi
        !           501: \let\lastnode=\relax}
        !           502: 
        !           503: \let\refill=\relax
        !           504:   
        !           505: % @setfilename is done at the beginning of every texinfo file.
        !           506: % So open here the files we need to have open while reading the input.
        !           507: % This makes it possible to make a .fmt file for texinfo.
        !           508: \def\setfilename{%
        !           509:    \readauxfile
        !           510:    \opencontents
        !           511:    \openindices
        !           512:    \fixbackslash  % Turn off hack to swallow `\input texinfo'.
        !           513:    \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
        !           514:    \comment % Ignore the actual filename.
        !           515: }
        !           516: 
        !           517: \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
        !           518: 
        !           519: \def\inforef #1{\inforefzzz #1,,,,**}
        !           520: \def\inforefzzz #1,#2,#3,#4**{See Info file \file{\losespace#3{}},
        !           521:   node \samp{\losespace#1{}}}
        !           522: \def\losespace #1{#1}
        !           523: 
        !           524: \message{fonts,}
        !           525: 
        !           526: % Font-change commands.
        !           527: 
        !           528: % Texinfo supports the sans serif font style, which plain TeX does not.
        !           529: % So we set up a \sf analogous to plain's \rm, etc.
        !           530: \newfam\sffam
        !           531: \def\sf{\fam=\sffam \tensf}
        !           532: \let\li = \sf % Sometimes we call it \li, not \sf.
        !           533: 
        !           534: %% Try out Computer Modern fonts at \magstephalf
        !           535: \let\mainmagstep=\magstephalf
        !           536: 
        !           537: \ifx\bigger\relax
        !           538: \let\mainmagstep=\magstep1
        !           539: \font\textrm=cmr12
        !           540: \font\texttt=cmtt12
        !           541: \else
        !           542: \font\textrm=cmr10 scaled \mainmagstep
        !           543: \font\texttt=cmtt10 scaled \mainmagstep
        !           544: \fi
        !           545: % Instead of cmb10, you many want to use cmbx10.
        !           546: % cmbx10 is a prettier font on its own, but cmb10
        !           547: % looks better when embedded in a line with cmr10.
        !           548: \font\textbf=cmb10 scaled \mainmagstep 
        !           549: \font\textit=cmti10 scaled \mainmagstep
        !           550: \font\textsl=cmsl10 scaled \mainmagstep
        !           551: \font\textsf=cmss10 scaled \mainmagstep
        !           552: \font\textsc=cmcsc10 scaled \mainmagstep
        !           553: \font\texti=cmmi10 scaled \mainmagstep
        !           554: \font\textsy=cmsy10 scaled \mainmagstep
        !           555: 
        !           556: % A few fonts for @defun, etc.
        !           557: \font\defbf=cmbx10 scaled \magstep1 %was 1314
        !           558: \font\deftt=cmtt10 scaled \magstep1
        !           559: \def\df{\let\tentt=\deftt \let\tenbf = \defbf \bf}
        !           560: 
        !           561: % Fonts for indices and small examples.
        !           562: % We actually use the slanted font rather than the italic, 
        !           563: % because texinfo normally uses the slanted fonts for that.
        !           564: % Do not make many font distinctions in general in the index, since they
        !           565: % aren't very useful.
        !           566: \font\ninett=cmtt9
        !           567: \font\indrm=cmr9
        !           568: \font\indit=cmsl9
        !           569: \let\indsl=\indit
        !           570: \let\indtt=\ninett
        !           571: \let\indsf=\indrm
        !           572: \let\indbf=\indrm
        !           573: \let\indsc=\indrm
        !           574: \font\indi=cmmi9
        !           575: \font\indsy=cmsy9
        !           576: 
        !           577: % Fonts for headings
        !           578: \font\chaprm=cmbx12 scaled \magstep2
        !           579: \font\chapit=cmti12 scaled \magstep2
        !           580: \font\chapsl=cmsl12 scaled \magstep2
        !           581: \font\chaptt=cmtt12 scaled \magstep2
        !           582: \font\chapsf=cmss12 scaled \magstep2
        !           583: \let\chapbf=\chaprm
        !           584: \font\chapsc=cmcsc10 scaled\magstep3
        !           585: \font\chapi=cmmi12 scaled \magstep2
        !           586: \font\chapsy=cmsy10 scaled \magstep3
        !           587: 
        !           588: \font\secrm=cmbx12 scaled \magstep1
        !           589: \font\secit=cmti12 scaled \magstep1
        !           590: \font\secsl=cmsl12 scaled \magstep1
        !           591: \font\sectt=cmtt12 scaled \magstep1
        !           592: \font\secsf=cmss12 scaled \magstep1
        !           593: \font\secbf=cmbx12 scaled \magstep1
        !           594: \font\secsc=cmcsc10 scaled\magstep2
        !           595: \font\seci=cmmi12 scaled \magstep1
        !           596: \font\secsy=cmsy10 scaled \magstep2
        !           597: 
        !           598: % \font\ssecrm=cmbx10 scaled \magstep1    % This size an font looked bad.
        !           599: % \font\ssecit=cmti10 scaled \magstep1    % The letters were too crowded.
        !           600: % \font\ssecsl=cmsl10 scaled \magstep1
        !           601: % \font\ssectt=cmtt10 scaled \magstep1
        !           602: % \font\ssecsf=cmss10 scaled \magstep1
        !           603: 
        !           604: %\font\ssecrm=cmb10 scaled 1315        % Note the use of cmb rather than cmbx.
        !           605: %\font\ssecit=cmti10 scaled 1315       % Also, the size is a little larger than
        !           606: %\font\ssecsl=cmsl10 scaled 1315       % being scaled magstep1.
        !           607: %\font\ssectt=cmtt10 scaled 1315
        !           608: %\font\ssecsf=cmss10 scaled 1315
        !           609: 
        !           610: %\let\ssecbf=\ssecrm
        !           611: 
        !           612: \font\ssecrm=cmbx12 scaled \magstephalf
        !           613: \font\ssecit=cmti12 scaled \magstephalf
        !           614: \font\ssecsl=cmsl12 scaled \magstephalf
        !           615: \font\ssectt=cmtt12 scaled \magstephalf
        !           616: \font\ssecsf=cmss12 scaled \magstephalf
        !           617: \font\ssecbf=cmbx12 scaled \magstephalf
        !           618: \font\ssecsc=cmcsc10 scaled \magstep1 
        !           619: \font\sseci=cmmi12 scaled \magstephalf
        !           620: \font\ssecsy=cmsy10 scaled \magstep1
        !           621: % The smallcaps and symbol fonts should actually be scaled \magstep1.5,
        !           622: % but that is not a standard magnification.
        !           623: 
        !           624: % Fonts for title page:
        !           625: \font\titlerm = cmbx12 scaled \magstep3
        !           626: \let\authorrm = \secrm
        !           627: 
        !           628: % In order for the font changes to affect most math symbols and letters,
        !           629: % we have to define the \textfont of the standard families.  Since
        !           630: % texinfo doesn't allow for producing subscripts and superscripts, we
        !           631: % don't bother to reset \scriptfont and \scriptscriptfont (which would
        !           632: % also require loading a lot more fonts).
        !           633: % 
        !           634: \def\resetmathfonts{%
        !           635:   \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy
        !           636:   \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf
        !           637:   \textfont\ttfam = \tentt \textfont\sffam = \tensf
        !           638: }
        !           639: 
        !           640: 
        !           641: % The font-changing commands redefine the meanings of \tenSTYLE, instead
        !           642: % of just \STYLE.  We do this so that font changes will continue to work
        !           643: % in math mode, where it is the current \fam that is relevant in most
        !           644: % cases, not the current.  Plain TeX does, for example,
        !           645: % \def\bf{\fam=\bffam \tenbf}  By redefining \tenbf, we obviate the need
        !           646: % to redefine \bf itself.  
        !           647: \def\textfonts{%
        !           648:   \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
        !           649:   \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
        !           650:   \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
        !           651:   \resetmathfonts}
        !           652: \def\chapfonts{%
        !           653:   \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl 
        !           654:   \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
        !           655:   \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy
        !           656:   \resetmathfonts}
        !           657: \def\secfonts{%
        !           658:   \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
        !           659:   \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
        !           660:   \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
        !           661:   \resetmathfonts}
        !           662: \def\subsecfonts{%
        !           663:   \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
        !           664:   \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
        !           665:   \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
        !           666:   \resetmathfonts}
        !           667: \def\indexfonts{%
        !           668:   \let\tenrm=\indrm \let\tenit=\indit \let\tensl=\indsl
        !           669:   \let\tenbf=\indbf \let\tentt=\indtt \let\smallcaps=\indsc
        !           670:   \let\tensf=\indsf \let\teni=\indi \let\tensy=\indsy
        !           671:   \resetmathfonts}
        !           672: 
        !           673: % Set up the default fonts, so we can use them for creating boxes.
        !           674: % 
        !           675: \textfonts
        !           676: 
        !           677: % Count depth in font-changes, for error checks
        !           678: \newcount\fontdepth \fontdepth=0
        !           679: 
        !           680: % Fonts for short table of contents.
        !           681: \font\shortcontrm=cmr12
        !           682: \font\shortcontbf=cmbx12
        !           683: \font\shortcontsl=cmsl12
        !           684: 
        !           685: %% Add scribe-like font environments, plus @l for inline lisp (usually sans
        !           686: %% serif) and @ii for TeX italic
        !           687: 
        !           688: % \smartitalic{ARG} outputs arg in italics, followed by an italic correction
        !           689: % unless the following character is such as not to need one.
        !           690: \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
        !           691: \def\smartitalic#1{{\sl #1}\futurelet\next\smartitalicx}
        !           692: 
        !           693: \let\i=\smartitalic
        !           694: \let\var=\smartitalic
        !           695: \let\dfn=\smartitalic
        !           696: \let\emph=\smartitalic
        !           697: \let\cite=\smartitalic
        !           698: 
        !           699: \def\b#1{{\bf #1}}
        !           700: \let\strong=\b
        !           701: 
        !           702: \def\t#1{{\tt \exhyphenpenalty=10000\rawbackslash \frenchspacing #1}\null}
        !           703: \let\ttfont = \t
        !           704: %\def\samp #1{`{\tt \rawbackslash \frenchspacing #1}'\null}
        !           705: \def\samp #1{`\tclose{#1}'\null}
        !           706: \def\key #1{{\tt \exhyphenpenalty=10000\uppercase{#1}}\null}
        !           707: \def\ctrl #1{{\tt \rawbackslash \hat}#1}
        !           708: 
        !           709: \let\file=\samp
        !           710: 
        !           711: % @code is a modification of @t,
        !           712: % which makes spaces the same size as normal in the surrounding text.
        !           713: \newdimen\tclosesave
        !           714: \newdimen\tcloserm
        !           715: \def\tclose#1{{\rm \tcloserm=\fontdimen2\font \tt \tclosesave=\fontdimen2\font
        !           716: \fontdimen2\font=\tcloserm
        !           717: % prevent breaking lines at hyphens.
        !           718: \exhyphenpenalty=10000
        !           719: \def\ {{\fontdimen2\font=\tclosesave{} }}%
        !           720:  \rawbackslash \frenchspacing #1\fontdimen2\font=\tclosesave}\null}
        !           721: \let\code=\tclose
        !           722: %\let\exp=\tclose  %Was temporary
        !           723: 
        !           724: % @kbd is like @code, except that if the argument is just one @key command, 
        !           725: % then @kbd has no effect.
        !           726: 
        !           727: \def\xkey{\key}
        !           728: \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
        !           729: \ifx\one\xkey\ifx\threex\three \key{#2}%
        !           730: \else\tclose{\look}\fi
        !           731: \else\tclose{\look}\fi}
        !           732: 
        !           733: % Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
        !           734: % argument is to make the input look right: @dmn{pt} instead of
        !           735: % @dmn{}pt.
        !           736: % 
        !           737: \def\dmn#1{\thinspace #1}
        !           738: 
        !           739: \def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
        !           740: 
        !           741: \def\l#1{{\li #1}\null}                % 
        !           742: 
        !           743: \def\r#1{{\rm #1}}             % roman font
        !           744: % Use of \lowercase was suggested.
        !           745: \def\sc#1{{\smallcaps#1}}      % smallcaps font
        !           746: \def\ii#1{{\it #1}}            % italic font
        !           747: 
        !           748: \message{page headings,}
        !           749: 
        !           750: \newskip\titlepagetopglue \titlepagetopglue = 1.5in
        !           751: \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
        !           752: 
        !           753: % First the title page.  Must do @settitle before @titlepage.
        !           754: \def\titlefont#1{{\titlerm #1}}
        !           755: 
        !           756: \newtoks\realeverypar
        !           757: \newif\ifseenauthor
        !           758: \newif\iffinishedtitlepage
        !           759: 
        !           760: \def\titlepage{\begingroup \parindent=0pt \textfonts
        !           761:    \let\subtitlerm=\tenrm
        !           762: % I deinstalled the following change because \cmr12 is undefined.
        !           763: % This change was not in the ChangeLog anyway.  --rms.
        !           764: %   \let\subtitlerm=\cmr12
        !           765:    \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
        !           766:    %
        !           767:    \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
        !           768:    %
        !           769:    % Leave some space at the very top of the page.
        !           770:    \vglue\titlepagetopglue
        !           771:    %
        !           772:    % Now you can print the title using @title.
        !           773:    \def\title{\parsearg\titlezzz}%
        !           774:    \def\titlezzz##1{\leftline{\titlefont{##1}}
        !           775:                    % print a rule at the page bottom also.
        !           776:                    \finishedtitlepagefalse
        !           777:                    \vskip4pt \hrule height 4pt \vskip4pt}%
        !           778:    % No rule at page bottom unless we print one at the top with @title.
        !           779:    \finishedtitlepagetrue
        !           780:    %
        !           781:    % Now you can put text using @subtitle.
        !           782:    \def\subtitle{\parsearg\subtitlezzz}%
        !           783:    \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
        !           784:    %
        !           785:    % @author should come last, but may come many times.
        !           786:    \def\author{\parsearg\authorzzz}%
        !           787:    \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
        !           788:       {\authorfont \leftline{##1}}}%
        !           789:    %  
        !           790:    % Most title ``pages'' are actually two pages long, with space
        !           791:    % at the top of the second.  We don't want the ragged left on the second.
        !           792:    \let\oldpage = \page
        !           793:    \def\page{%
        !           794:       \iffinishedtitlepage\else
        !           795:         \finishtitlepage
        !           796:       \fi
        !           797:       \oldpage
        !           798:       \let\page = \oldpage
        !           799:       \hbox{}}%
        !           800: %   \def\page{\oldpage \hbox{}}
        !           801: }
        !           802: 
        !           803: \def\Etitlepage{%
        !           804:    \iffinishedtitlepage\else
        !           805:       \finishtitlepage
        !           806:    \fi
        !           807:    % It is important to do the page break before ending the group,
        !           808:    % because the headline and footline are only empty inside the group.
        !           809:    % If we use the new definition of \page, we always get a blank page
        !           810:    % after the title page, which we certainly don't want.
        !           811:    \oldpage
        !           812:    \endgroup
        !           813:    \HEADINGSon
        !           814: }
        !           815: 
        !           816: \def\finishtitlepage{%
        !           817:    \vskip4pt \hrule height 2pt
        !           818:    \vskip\titlepagebottomglue
        !           819:    \finishedtitlepagetrue
        !           820: }
        !           821: 
        !           822: %%% Set up page headings and footings.
        !           823: 
        !           824: \let\thispage=\folio
        !           825: 
        !           826: \newtoks \evenheadline    % Token sequence for heading line of even pages
        !           827: \newtoks \oddheadline     % Token sequence for heading line of odd pages
        !           828: \newtoks \evenfootline    % Token sequence for footing line of even pages
        !           829: \newtoks \oddfootline     % Token sequence for footing line of odd pages
        !           830: 
        !           831: % Now make Tex use those variables
        !           832: \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
        !           833:                             \else \the\evenheadline \fi}}
        !           834: \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
        !           835:                             \else \the\evenfootline \fi}\HEADINGShook}
        !           836: \let\HEADINGShook=\relax
        !           837: 
        !           838: % Commands to set those variables.
        !           839: % For example, this is what  @headings on  does
        !           840: % @evenheading @thistitle|@thispage|@thischapter
        !           841: % @oddheading @thischapter|@thispage|@thistitle
        !           842: % @evenfooting @thisfile||
        !           843: % @oddfooting ||@thisfile
        !           844: 
        !           845: \def\evenheading{\parsearg\evenheadingxxx}
        !           846: \def\oddheading{\parsearg\oddheadingxxx}
        !           847: \def\everyheading{\parsearg\everyheadingxxx}
        !           848: 
        !           849: \def\evenfooting{\parsearg\evenfootingxxx}
        !           850: \def\oddfooting{\parsearg\oddfootingxxx}
        !           851: \def\everyfooting{\parsearg\everyfootingxxx}
        !           852: 
        !           853: {\catcode`\@=0 %
        !           854: 
        !           855: \gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
        !           856: \gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
        !           857: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           858: 
        !           859: \gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
        !           860: \gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
        !           861: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           862: 
        !           863: \gdef\everyheadingxxx #1{\everyheadingyyy #1@|@|@|@|\finish}
        !           864: \gdef\everyheadingyyy #1@|#2@|#3@|#4\finish{%
        !           865: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
        !           866: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           867: 
        !           868: \gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
        !           869: \gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
        !           870: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           871: 
        !           872: \gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
        !           873: \gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
        !           874: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           875: 
        !           876: \gdef\everyfootingxxx #1{\everyfootingyyy #1@|@|@|@|\finish}
        !           877: \gdef\everyfootingyyy #1@|#2@|#3@|#4\finish{%
        !           878: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
        !           879: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           880: %
        !           881: }% unbind the catcode of @.
        !           882: 
        !           883: % @headings double     turns headings on for double-sided printing.
        !           884: % @headings single     turns headings on for single-sided printing.
        !           885: % @headings off                turns them off.
        !           886: % @headings on         same as @headings double, retained for compatibility.
        !           887: % @headings after      turns on double-sided headings after this page.
        !           888: % @headings doubleafter        turns on double-sided headings after this page.
        !           889: % @headings singleafter turns on single-sided headings after this page.
        !           890: % By default, they are off.
        !           891: 
        !           892: \def\headings #1 {\csname HEADINGS#1\endcsname}
        !           893: 
        !           894: \def\HEADINGSoff{
        !           895: \global\evenheadline={\hfil} \global\evenfootline={\hfil}
        !           896: \global\oddheadline={\hfil} \global\oddfootline={\hfil}}
        !           897: \HEADINGSoff
        !           898: % When we turn headings on, set the page number to 1.
        !           899: % For double-sided printing, put current file name in lower left corner,
        !           900: % chapter name on inside top of right hand pages, document
        !           901: % title on inside top of left hand pages, and page numbers on outside top
        !           902: % edge of all pages.
        !           903: \def\HEADINGSdouble{
        !           904: %\pagealignmacro
        !           905: \global\pageno=1
        !           906: \global\evenfootline={\hfil}
        !           907: \global\oddfootline={\hfil}
        !           908: \global\evenheadline={\line{\folio\hfil\thistitle}}
        !           909: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !           910: }
        !           911: % For single-sided printing, chapter title goes across top left of page,
        !           912: % page number on top right.
        !           913: \def\HEADINGSsingle{
        !           914: %\pagealignmacro
        !           915: \global\pageno=1
        !           916: \global\evenfootline={\hfil}
        !           917: \global\oddfootline={\hfil}
        !           918: \global\evenheadline={\line{\thischapter\hfil\folio}}
        !           919: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !           920: }
        !           921: \def\HEADINGSon{\HEADINGSdouble}
        !           922: 
        !           923: \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
        !           924: \let\HEADINGSdoubleafter=\HEADINGSafter
        !           925: \def\HEADINGSdoublex{%
        !           926: \global\evenfootline={\hfil}
        !           927: \global\oddfootline={\hfil}
        !           928: \global\evenheadline={\line{\folio\hfil\thistitle}}
        !           929: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !           930: }
        !           931: 
        !           932: \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
        !           933: \def\HEADINGSsinglex{%
        !           934: \global\evenfootline={\hfil}
        !           935: \global\oddfootline={\hfil}
        !           936: \global\evenheadline={\line{\thischapter\hfil\folio}}
        !           937: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !           938: }
        !           939: 
        !           940: % Subroutines used in generating headings
        !           941: % Produces Day Month Year style of output.
        !           942: \def\today{\number\day\space
        !           943: \ifcase\month\or
        !           944: January\or February\or March\or April\or May\or June\or
        !           945: July\or August\or September\or October\or November\or December\fi
        !           946: \space\number\year}
        !           947: 
        !           948: % Use this if you want the Month Day, Year style of output.
        !           949: %\def\today{\ifcase\month\or
        !           950: %January\or February\or March\or April\or May\or June\or
        !           951: %July\or August\or September\or October\or November\or December\fi
        !           952: %\space\number\day, \number\year}
        !           953: 
        !           954: % @settitle line...  specifies the title of the document, for headings
        !           955: % It generates no output of its own
        !           956: 
        !           957: \def\thistitle{No Title}
        !           958: \def\settitle{\parsearg\settitlezzz}
        !           959: \def\settitlezzz #1{\gdef\thistitle{#1}}
        !           960: 
        !           961: \message{tables,}
        !           962: 
        !           963: % @tabs -- simple alignment
        !           964: 
        !           965: % These don't work.  For one thing, \+ is defined as outer.
        !           966: % So these macros cannot even be defined.
        !           967: 
        !           968: %\def\tabs{\parsearg\tabszzz}
        !           969: %\def\tabszzz #1{\settabs\+#1\cr}
        !           970: %\def\tabline{\parsearg\tablinezzz}
        !           971: %\def\tablinezzz #1{\+#1\cr}
        !           972: %\def\&{&}
        !           973: 
        !           974: % Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x).
        !           975: 
        !           976: % default indentation of table text
        !           977: \newdimen\tableindent \tableindent=.8in
        !           978: % default indentation of @itemize and @enumerate text
        !           979: \newdimen\itemindent  \itemindent=.3in
        !           980: % margin between end of table item and start of table text.
        !           981: \newdimen\itemmargin  \itemmargin=.1in
        !           982: 
        !           983: % used internally for \itemindent minus \itemmargin
        !           984: \newdimen\itemmax
        !           985: 
        !           986: % Note @table, @vtable, and @vtable define @item, @itemx, etc., with
        !           987: % these defs.
        !           988: % They also define \itemindex
        !           989: % to index the item name in whatever manner is desired (perhaps none).
        !           990: 
        !           991: \def\internalBitem{\smallbreak \parsearg\itemzzz}
        !           992: \def\internalBitemx{\par \parsearg\itemzzz}
        !           993: 
        !           994: \def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
        !           995: \def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \par \parsearg\xitemzzz}
        !           996: 
        !           997: \def\internalBkitem{\smallbreak \parsearg\kitemzzz}
        !           998: \def\internalBkitemx{\par \parsearg\kitemzzz}
        !           999: 
        !          1000: \def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}%
        !          1001:                  \itemzzz {#1}}
        !          1002: 
        !          1003: \def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}%
        !          1004:                  \itemzzz {#1}}
        !          1005: 
        !          1006: \def\itemzzz #1{\begingroup %
        !          1007:   \advance\hsize by -\rightskip
        !          1008:   \advance\hsize by -\tableindent
        !          1009:   \setbox0=\hbox{\itemfont{#1}}%
        !          1010:   \itemindex{#1}%
        !          1011:   \nobreak % This prevents a break before @itemx.
        !          1012:   %
        !          1013:   % Be sure we are not still in the middle of a paragraph.
        !          1014:   \parskip=0in
        !          1015:   \par
        !          1016:   %
        !          1017:   % If the item text does not fit in the space we have, put it on a line
        !          1018:   % by itself, and do not allow a page break either before or after that
        !          1019:   % line.  We do not start a paragraph here because then if the next
        !          1020:   % command is, e.g., @kindex, the whatsit would get put into the
        !          1021:   % horizontal list on a line by itself, resulting in extra blank space.
        !          1022:   \ifdim \wd0>\itemmax
        !          1023:     \setbox0=\hbox{\hskip \leftskip \hskip -\tableindent \unhbox0}\box0
        !          1024:     \nobreak
        !          1025:   \else
        !          1026:     % The item text fits into the space.  Start a paragraph, so that the
        !          1027:     % following text (if any) will end up on the same line.  Since that
        !          1028:     % text will be indented by \tableindent, we make the item text be in
        !          1029:     % a zero-width box.
        !          1030:     \noindent
        !          1031:     \rlap{\hskip -\tableindent\box0}%
        !          1032:   \fi
        !          1033:   \endgroup
        !          1034: }
        !          1035: 
        !          1036: \def\item{\errmessage{@item while not in a table}}
        !          1037: \def\itemx{\errmessage{@itemx while not in a table}}
        !          1038: \def\kitem{\errmessage{@kitem while not in a table}}
        !          1039: \def\kitemx{\errmessage{@kitemx while not in a table}}
        !          1040: \def\xitem{\errmessage{@xitem while not in a table}}
        !          1041: \def\xitemx{\errmessage{@xitemx while not in a table}}
        !          1042: 
        !          1043: %% Contains a kludge to get @end[description] to work
        !          1044: \def\description{\tablez{\dontindex}{1}{}{}{}{}}
        !          1045: 
        !          1046: \def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
        !          1047: {\obeylines\obeyspaces%
        !          1048: \gdef\tablex #1^^M{%
        !          1049: \tabley\dontindex#1        \endtabley}}
        !          1050: 
        !          1051: \def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
        !          1052: {\obeylines\obeyspaces%
        !          1053: \gdef\ftablex #1^^M{%
        !          1054: \tabley\fnitemindex#1        \endtabley
        !          1055: \def\Eftable{\endgraf\endgroup\afterenvbreak}%
        !          1056: \let\Etable=\relax}}
        !          1057: 
        !          1058: \def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex}
        !          1059: {\obeylines\obeyspaces%
        !          1060: \gdef\vtablex #1^^M{%
        !          1061: \tabley\vritemindex#1        \endtabley
        !          1062: \def\Evtable{\endgraf\endgroup\afterenvbreak}%
        !          1063: \let\Etable=\relax}}
        !          1064: 
        !          1065: \def\dontindex #1{}
        !          1066: \def\fnitemindex #1{\doind {fn}{\code{#1}}}%
        !          1067: \def\vritemindex #1{\doind {vr}{\code{#1}}}%
        !          1068: 
        !          1069: {\obeyspaces %
        !          1070: \gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
        !          1071: \tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
        !          1072: 
        !          1073: \def\tablez #1#2#3#4#5#6{%
        !          1074: \aboveenvbreak %
        !          1075: \begingroup %
        !          1076: \def\Edescription{\Etable}% Neccessary kludge.
        !          1077: \let\itemindex=#1%
        !          1078: \ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
        !          1079: \ifnum 0#4>0 \tableindent=#4\mil \fi %
        !          1080: \ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
        !          1081: \def\itemfont{#2}%
        !          1082: \itemmax=\tableindent %
        !          1083: \advance \itemmax by -\itemmargin %
        !          1084: \advance \leftskip by \tableindent %
        !          1085: \exdentamount=\tableindent
        !          1086: \parindent = 0pt
        !          1087: \parskip = \smallskipamount
        !          1088: \ifdim \parskip=0pt \parskip=2pt \fi%
        !          1089: \def\Etable{\endgraf\endgroup\afterenvbreak}%
        !          1090: \let\item = \internalBitem %
        !          1091: \let\itemx = \internalBitemx %
        !          1092: \let\kitem = \internalBkitem %
        !          1093: \let\kitemx = \internalBkitemx %
        !          1094: \let\xitem = \internalBxitem %
        !          1095: \let\xitemx = \internalBxitemx %
        !          1096: }
        !          1097: 
        !          1098: % This is the counter used by @enumerate, which is really @itemize
        !          1099: 
        !          1100: \newcount \itemno
        !          1101: 
        !          1102: \def\itemize{\parsearg\itemizezzz}
        !          1103: 
        !          1104: \def\itemizezzz #1{%
        !          1105:   \begingroup % ended by the @end itemsize
        !          1106:   \itemizey {#1}{\Eitemize}
        !          1107: }
        !          1108: 
        !          1109: \def\itemizey #1#2{%
        !          1110: \aboveenvbreak %
        !          1111: \itemmax=\itemindent %
        !          1112: \advance \itemmax by -\itemmargin %
        !          1113: \advance \leftskip by \itemindent %
        !          1114: \exdentamount=\itemindent
        !          1115: \parindent = 0pt %
        !          1116: \parskip = \smallskipamount %
        !          1117: \ifdim \parskip=0pt \parskip=2pt \fi%
        !          1118: \def#2{\endgraf\endgroup\afterenvbreak}%
        !          1119: \def\itemcontents{#1}%
        !          1120: \let\item=\itemizeitem}
        !          1121: 
        !          1122: \def\bullet{$\ptexbullet$}
        !          1123: \def\minus{$-$}
        !          1124: 
        !          1125: % Set sfcode to normal for the chars that usually have another value.
        !          1126: % These are `.?!:;,'
        !          1127: \def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
        !          1128:   \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
        !          1129: 
        !          1130: % \splitoff TOKENS\endmark defines \first to be the first token in
        !          1131: % TOKENS, and \rest to be the remainder.
        !          1132: % 
        !          1133: \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
        !          1134: 
        !          1135: % Allow an optional argument of an uppercase letter, lowercase letter,
        !          1136: % or number, to specify the first label in the enumerated list.  No
        !          1137: % argument is the same as `1'.
        !          1138: % 
        !          1139: \def\enumerate{\parsearg\enumeratezzz}
        !          1140: \def\enumeratezzz #1{\enumeratey #1  \endenumeratey}
        !          1141: \def\enumeratey #1 #2\endenumeratey{%
        !          1142:   \begingroup % ended by the @end enumerate
        !          1143:   %
        !          1144:   % If we were given no argument, pretend we were given `1'.
        !          1145:   \def\thearg{#1}%
        !          1146:   \ifx\thearg\empty \def\thearg{1}\fi
        !          1147:   %
        !          1148:   % Detect if the argument is a single token.  If so, it might be a
        !          1149:   % letter.  Otherwise, the only valid thing it can be is a number.
        !          1150:   % (We will always have one token, because of the test we just made.
        !          1151:   % This is a good thing, since \splitoff doesn't work given nothing at
        !          1152:   % all -- the first parameter is undelimited.)
        !          1153:   \expandafter\splitoff\thearg\endmark
        !          1154:   \ifx\rest\empty
        !          1155:     % Only one token in the argument.  It could still be anything.
        !          1156:     % A ``lowercase letter'' is one whose \lccode is nonzero.
        !          1157:     % An ``uppercase letter'' is one whose \lccode is both nonzero, and
        !          1158:     %   not equal to itself.
        !          1159:     % Otherwise, we assume it's a number.
        !          1160:     % 
        !          1161:     % We need the \relax at the end of the \ifnum lines to stop TeX from
        !          1162:     % continuing to look for a <number>.
        !          1163:     % 
        !          1164:     \ifnum\lccode\expandafter`\thearg=0\relax 
        !          1165:       \numericenumerate % a number (we hope)
        !          1166:     \else
        !          1167:       % It's a letter.
        !          1168:       \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
        !          1169:         \lowercaseenumerate % lowercase letter
        !          1170:       \else
        !          1171:         \uppercaseenumerate % uppercase letter
        !          1172:       \fi
        !          1173:     \fi
        !          1174:   \else
        !          1175:     % Multiple tokens in the argument.  We hope it's a number.
        !          1176:     \numericenumerate
        !          1177:   \fi
        !          1178: }
        !          1179: 
        !          1180: % An @enumerate whose labels are integers.  The starting integer is
        !          1181: % given in \thearg.
        !          1182: % 
        !          1183: \def\numericenumerate{%
        !          1184:   \itemno = \thearg
        !          1185:   \startenumeration{\the\itemno}%
        !          1186: }
        !          1187: 
        !          1188: % The starting (lowercase) letter is in \thearg.
        !          1189: \def\lowercaseenumerate{%
        !          1190:   \itemno = \expandafter`\thearg
        !          1191:   \startenumeration{%
        !          1192:     % Be sure we're not beyond the end of the alphabet.
        !          1193:     \ifnum\itemno=0
        !          1194:       \errmessage{No more lowercase letters in @enumerate; get a bigger
        !          1195:                   alphabet}%
        !          1196:     \fi
        !          1197:     \char\lccode\itemno
        !          1198:   }%
        !          1199: }
        !          1200: 
        !          1201: % The starting (uppercase) letter is in \thearg.
        !          1202: \def\uppercaseenumerate{%
        !          1203:   \itemno = \expandafter`\thearg
        !          1204:   \startenumeration{%
        !          1205:     % Be sure we're not beyond the end of the alphabet.
        !          1206:     \ifnum\itemno=0
        !          1207:       \errmessage{No more uppercase letters in @enumerate; get a bigger
        !          1208:                   alphabet}
        !          1209:     \fi
        !          1210:     \char\uccode\itemno
        !          1211:   }%
        !          1212: }
        !          1213: 
        !          1214: % Call itemizey, adding a period to the first argument and supplying the
        !          1215: % common last two arguments.  Also subtract one from the initial value in
        !          1216: % \itemno, since @item increments \itemno.
        !          1217: % 
        !          1218: \def\startenumeration#1{%
        !          1219:   \advance\itemno by -1
        !          1220:   \itemizey{#1.}\Eenumerate\flushcr
        !          1221: }
        !          1222: 
        !          1223: % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
        !          1224: % to @enumerate.
        !          1225: % 
        !          1226: \def\alphaenumerate{\enumerate{a}}
        !          1227: \def\capsenumerate{\enumerate{A}}
        !          1228: \def\Ealphaenumerate{\Eenumerate}
        !          1229: \def\Ecapsenumerate{\Eenumerate}
        !          1230: 
        !          1231: % Definition of @item while inside @itemize.
        !          1232: 
        !          1233: \def\itemizeitem{%
        !          1234: \advance\itemno by 1
        !          1235: {\let\par=\endgraf \smallbreak}%
        !          1236: \ifhmode \errmessage{\in hmode at itemizeitem}\fi
        !          1237: {\parskip=0in \hskip 0pt
        !          1238: \hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
        !          1239: \vadjust{\penalty 1200}}%
        !          1240: \flushcr}
        !          1241: 
        !          1242: \message{indexing,}
        !          1243: % Index generation facilities
        !          1244: 
        !          1245: % Define \newwrite to be identical to plain tex's \newwrite
        !          1246: % except not \outer, so it can be used within \newindex.
        !          1247: {\catcode`\@=11
        !          1248: \gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
        !          1249: 
        !          1250: % \newindex {foo} defines an index named foo.
        !          1251: % It automatically defines \fooindex such that
        !          1252: % \fooindex ...rest of line... puts an entry in the index foo.
        !          1253: % It also defines \fooindfile to be the number of the output channel for
        !          1254: % the file that        accumulates this index.  The file's extension is foo.
        !          1255: % The name of an index should be no more than 2 characters long
        !          1256: % for the sake of vms.
        !          1257: 
        !          1258: \def\newindex #1{
        !          1259: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
        !          1260: \openout \csname#1indfile\endcsname \jobname.#1        % Open the file
        !          1261: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1262: \noexpand\doindex {#1}}
        !          1263: }
        !          1264: 
        !          1265: % @defindex foo  ==  \newindex{foo}
        !          1266: 
        !          1267: \def\defindex{\parsearg\newindex}
        !          1268: 
        !          1269: % Define @defcodeindex, like @defindex except put all entries in @code.
        !          1270: 
        !          1271: \def\newcodeindex #1{
        !          1272: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
        !          1273: \openout \csname#1indfile\endcsname \jobname.#1        % Open the file
        !          1274: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1275: \noexpand\docodeindex {#1}}
        !          1276: }
        !          1277: 
        !          1278: \def\defcodeindex{\parsearg\newcodeindex}
        !          1279: 
        !          1280: % @synindex foo bar    makes index foo feed into index bar.
        !          1281: % Do this instead of @defindex foo if you don't want it as a separate index.
        !          1282: \def\synindex #1 #2 {%
        !          1283: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
        !          1284: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
        !          1285: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1286: \noexpand\doindex {#2}}%
        !          1287: }
        !          1288: 
        !          1289: % @syncodeindex foo bar   similar, but put all entries made for index foo
        !          1290: % inside @code.
        !          1291: \def\syncodeindex #1 #2 {%
        !          1292: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
        !          1293: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
        !          1294: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1295: \noexpand\docodeindex {#2}}%
        !          1296: }
        !          1297: 
        !          1298: % Define \doindex, the driver for all \fooindex macros.
        !          1299: % Argument #1 is generated by the calling \fooindex macro,
        !          1300: %  and it is "foo", the name of the index.
        !          1301: 
        !          1302: % \doindex just uses \parsearg; it calls \doind for the actual work.
        !          1303: % This is because \doind is more useful to call from other macros.
        !          1304: 
        !          1305: % There is also \dosubind {index}{topic}{subtopic}
        !          1306: % which makes an entry in a two-level index such as the operation index.
        !          1307: 
        !          1308: \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
        !          1309: \def\singleindexer #1{\doind{\indexname}{#1}}
        !          1310: 
        !          1311: % like the previous two, but they put @code around the argument.
        !          1312: \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
        !          1313: \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
        !          1314: 
        !          1315: \def\indexdummies{%
        !          1316: \def\_{{\realbackslash _}}%
        !          1317: \def\w{\realbackslash w }%
        !          1318: \def\bf{\realbackslash bf }%
        !          1319: \def\rm{\realbackslash rm }%
        !          1320: \def\sl{\realbackslash sl }%
        !          1321: \def\sf{\realbackslash sf}%
        !          1322: \def\tt{\realbackslash tt}%
        !          1323: \def\gtr{\realbackslash gtr}%
        !          1324: \def\less{\realbackslash less}%
        !          1325: \def\hat{\realbackslash hat}%
        !          1326: \def\char{\realbackslash char}%
        !          1327: \def\TeX{\realbackslash TeX}%
        !          1328: \def\dots{\realbackslash dots }%
        !          1329: \def\copyright{\realbackslash copyright }%
        !          1330: \def\tclose##1{\realbackslash tclose {##1}}%
        !          1331: \def\code##1{\realbackslash code {##1}}%
        !          1332: \def\samp##1{\realbackslash samp {##1}}%
        !          1333: \def\t##1{\realbackslash r {##1}}%
        !          1334: \def\r##1{\realbackslash r {##1}}%
        !          1335: \def\i##1{\realbackslash i {##1}}%
        !          1336: \def\b##1{\realbackslash b {##1}}%
        !          1337: \def\cite##1{\realbackslash cite {##1}}%
        !          1338: \def\key##1{\realbackslash key {##1}}%
        !          1339: \def\file##1{\realbackslash file {##1}}%
        !          1340: \def\var##1{\realbackslash var {##1}}%
        !          1341: \def\kbd##1{\realbackslash kbd {##1}}%
        !          1342: }
        !          1343: 
        !          1344: % \indexnofonts no-ops all font-change commands.
        !          1345: % This is used when outputting the strings to sort the index by.
        !          1346: \def\indexdummyfont#1{#1}
        !          1347: \def\indexdummytex{TeX}
        !          1348: \def\indexdummydots{...}
        !          1349: 
        !          1350: \def\indexnofonts{%
        !          1351: \let\w=\indexdummyfont
        !          1352: \let\t=\indexdummyfont
        !          1353: \let\r=\indexdummyfont
        !          1354: \let\i=\indexdummyfont
        !          1355: \let\b=\indexdummyfont
        !          1356: \let\emph=\indexdummyfont
        !          1357: \let\strong=\indexdummyfont
        !          1358: \let\cite=\indexdummyfont
        !          1359: \let\sc=\indexdummyfont
        !          1360: %Don't no-op \tt, since it isn't a user-level command
        !          1361: % and is used in the definitions of the active chars like <, >, |...
        !          1362: %\let\tt=\indexdummyfont
        !          1363: \let\tclose=\indexdummyfont
        !          1364: \let\code=\indexdummyfont
        !          1365: \let\file=\indexdummyfont
        !          1366: \let\samp=\indexdummyfont
        !          1367: \let\kbd=\indexdummyfont
        !          1368: \let\key=\indexdummyfont
        !          1369: \let\var=\indexdummyfont
        !          1370: \let\TeX=\indexdummytex
        !          1371: \let\dots=\indexdummydots
        !          1372: }
        !          1373: 
        !          1374: % To define \realbackslash, we must make \ not be an escape.
        !          1375: % We must first make another character (@) an escape
        !          1376: % so we do not become unable to do a definition.
        !          1377: 
        !          1378: {\catcode`\@=0 \catcode`\\=\other
        !          1379: @gdef@realbackslash{\}}
        !          1380: 
        !          1381: \let\indexbackslash=0  %overridden during \printindex.
        !          1382: 
        !          1383: \def\doind #1#2{%
        !          1384: {\count10=\lastpenalty %
        !          1385: {\indexdummies % Must do this here, since \bf, etc expand at this stage
        !          1386: \escapechar=`\\%
        !          1387: {\let\folio=0% Expand all macros now EXCEPT \folio
        !          1388: \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
        !          1389: % so it will be output as is; and it will print as backslash in the indx.
        !          1390: %
        !          1391: % Now process the index-string once, with all font commands turned off,
        !          1392: % to get the string to sort the index by.
        !          1393: {\indexnofonts
        !          1394: \xdef\temp1{#2}%
        !          1395: }%
        !          1396: % Now produce the complete index entry.  We process the index-string again,
        !          1397: % this time with font commands expanded, to get what to print in the index.
        !          1398: \edef\temp{%
        !          1399: \write \csname#1indfile\endcsname{%
        !          1400: \realbackslash entry {\temp1}{\folio}{#2}}}%
        !          1401: \temp }%
        !          1402: }\penalty\count10}}
        !          1403: 
        !          1404: \def\dosubind #1#2#3{%
        !          1405: {\count10=\lastpenalty %
        !          1406: {\indexdummies % Must do this here, since \bf, etc expand at this stage
        !          1407: \escapechar=`\\%
        !          1408: {\let\folio=0%
        !          1409: \def\rawbackslashxx{\indexbackslash}%
        !          1410: %
        !          1411: % Now process the index-string once, with all font commands turned off,
        !          1412: % to get the string to sort the index by.
        !          1413: {\indexnofonts
        !          1414: \xdef\temp1{#2 #3}%
        !          1415: }%
        !          1416: % Now produce the complete index entry.  We process the index-string again,
        !          1417: % this time with font commands expanded, to get what to print in the index.
        !          1418: \edef\temp{%
        !          1419: \write \csname#1indfile\endcsname{%
        !          1420: \realbackslash entry {\temp1}{\folio}{#2}{#3}}}%
        !          1421: \temp }%
        !          1422: }\penalty\count10}}
        !          1423: 
        !          1424: % The index entry written in the file actually looks like
        !          1425: %  \entry {sortstring}{page}{topic}
        !          1426: % or
        !          1427: %  \entry {sortstring}{page}{topic}{subtopic}
        !          1428: % The texindex program reads in these files and writes files
        !          1429: % containing these kinds of lines:
        !          1430: %  \initial {c}
        !          1431: %     before the first topic whose initial is c
        !          1432: %  \entry {topic}{pagelist}
        !          1433: %     for a topic that is used without subtopics
        !          1434: %  \primary {topic}
        !          1435: %     for the beginning of a topic that is used with subtopics
        !          1436: %  \secondary {subtopic}{pagelist}
        !          1437: %     for each subtopic.
        !          1438: 
        !          1439: % Define the user-accessible indexing commands 
        !          1440: % @findex, @vindex, @kindex, @cindex.
        !          1441: 
        !          1442: \def\findex {\fnindex}
        !          1443: \def\kindex {\kyindex}
        !          1444: \def\cindex {\cpindex}
        !          1445: \def\vindex {\vrindex}
        !          1446: \def\tindex {\tpindex}
        !          1447: \def\pindex {\pgindex}
        !          1448: 
        !          1449: \def\cindexsub {\begingroup\obeylines\cindexsub}
        !          1450: {\obeylines %
        !          1451: \gdef\cindexsub "#1" #2^^M{\endgroup %
        !          1452: \dosubind{cp}{#2}{#1}}}
        !          1453: 
        !          1454: % Define the macros used in formatting output of the sorted index material.
        !          1455: 
        !          1456: % This is what you call to cause a particular index to get printed.
        !          1457: % Write
        !          1458: % @unnumbered Function Index
        !          1459: % @printindex fn
        !          1460: 
        !          1461: \def\printindex{\parsearg\doprintindex}
        !          1462: 
        !          1463: \def\doprintindex#1{%
        !          1464:   \tex
        !          1465:   \dobreak \chapheadingskip {10000}
        !          1466:   \catcode`\%=\other\catcode`\&=\other\catcode`\#=\other
        !          1467:   \catcode`\$=\other\catcode`\_=\other
        !          1468:   \catcode`\~=\other
        !          1469:   %
        !          1470:   % The following don't help, since the chars were translated
        !          1471:   % when the raw index was written, and their fonts were discarded
        !          1472:   % due to \indexnofonts.
        !          1473:   %\catcode`\"=\active
        !          1474:   %\catcode`\^=\active
        !          1475:   %\catcode`\_=\active
        !          1476:   %\catcode`\|=\active
        !          1477:   %\catcode`\<=\active
        !          1478:   %\catcode`\>=\active
        !          1479:   % %
        !          1480:   \def\indexbackslash{\rawbackslashxx}
        !          1481:   \indexfonts\rm \tolerance=9500 \advance\baselineskip -1pt
        !          1482:   \begindoublecolumns
        !          1483:   %
        !          1484:   % See if the index file exists and is nonempty.
        !          1485:   \openin 1 \jobname.#1s
        !          1486:   \ifeof 1 
        !          1487:     % \enddoublecolumns gets confused if there is no text in the index,
        !          1488:     % and it loses the chapter title and the aux file entries for the
        !          1489:     % index.  The easiest way to prevent this problem is to make sure
        !          1490:     % there is some text.
        !          1491:     (Index is nonexistent)
        !          1492:     \else
        !          1493:     %
        !          1494:     % If the index file exists but is empty, then \openin leaves \ifeof
        !          1495:     % false.  We have to make TeX try to read something from the file, so
        !          1496:     % it can discover if there is anything in it.
        !          1497:     \read 1 to \temp
        !          1498:     \ifeof 1
        !          1499:       (Index is empty)
        !          1500:     \else
        !          1501:       \input \jobname.#1s
        !          1502:     \fi
        !          1503:   \fi
        !          1504:   \closein 1
        !          1505:   \enddoublecolumns
        !          1506:   \Etex
        !          1507: }
        !          1508: 
        !          1509: % These macros are used by the sorted index file itself.
        !          1510: % Change them to control the appearance of the index.
        !          1511: 
        !          1512: % Same as \bigskipamount except no shrink.
        !          1513: % \balancecolumns gets confused if there is any shrink.
        !          1514: \newskip\initialskipamount \initialskipamount 12pt plus4pt
        !          1515: 
        !          1516: \def\initial #1{%
        !          1517: {\let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
        !          1518: \ifdim\lastskip<\initialskipamount
        !          1519: \removelastskip \penalty-200 \vskip \initialskipamount\fi
        !          1520: \line{\secbf#1\hfill}\kern 2pt\penalty10000}}
        !          1521: 
        !          1522: \def\entry #1#2{\begingroup
        !          1523:   \parfillskip=0in \parskip=0in \parindent=0in
        !          1524:   %
        !          1525:   % \hangindent is only relevant when the page number and the entry text
        !          1526:   % don't fit on one line.  In that case, bob suggests starting the dots
        !          1527:   % pretty far over on the line.
        !          1528:   % \hangafter is reset to 1 at the start of each paragraph.
        !          1529:   \hangindent=.75\hsize
        !          1530:   \noindent
        !          1531:   %
        !          1532:   % Don't break the text of the index entry.
        !          1533:   \hbox{#1}%
        !          1534:   %
        !          1535:   % If we must, put the page number on a line of its own, and fill out
        !          1536:   % this line with blank space.  (The \hfil is overwhelmed with the
        !          1537:   % fill leaders glue in \indexdotfill if the page number does fit.)
        !          1538:   \hfil\penalty50
        !          1539:   \null\nobreak\indexdotfill % Have leaders before the page number.
        !          1540:   %
        !          1541:   % The `\ ' here is removed by the implicit \unskip that TeX does as
        !          1542:   % part of (the primitive) \par.  Without, a spurious underfull \hbox ensues.
        !          1543:   \ #2% The page number ends the paragraph.
        !          1544:   \par
        !          1545: \endgroup}
        !          1546: 
        !          1547: % Like \dotfill except takes at least 1 em.
        !          1548: \def\indexdotfill{\cleaders
        !          1549:   \hbox{$\mathsurround=0pt \mkern1.5mu . \mkern1.5mu$}\hskip 1em plus 1fill}
        !          1550: 
        !          1551: \def\primary #1{\line{#1\hfil}}
        !          1552: 
        !          1553: \newskip\secondaryindent \secondaryindent=0.5cm
        !          1554: 
        !          1555: \def\secondary #1#2{
        !          1556: {\parfillskip=0in \parskip=0in
        !          1557: \hangindent =1in \hangafter=1
        !          1558: \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
        !          1559: }}
        !          1560: 
        !          1561: %% Define two-column mode, which is used in indexes.
        !          1562: %% Adapted from the TeXBook, page 416
        !          1563: \catcode `\@=11
        !          1564: 
        !          1565: \newbox\partialpage
        !          1566: 
        !          1567: \newdimen\doublecolumnhsize  \doublecolumnhsize = 3.11in
        !          1568: \newdimen\doublecolumnvsize  \doublecolumnvsize = 19.1in
        !          1569: \newdimen\availdimen@
        !          1570: 
        !          1571: \def\begindoublecolumns{\begingroup
        !          1572:   \output={\global\setbox\partialpage=
        !          1573:     \vbox{\unvbox255\kern -\topskip \kern \baselineskip}}\eject
        !          1574:   \output={\doublecolumnout}%
        !          1575:   \hsize=\doublecolumnhsize \vsize=\doublecolumnvsize}
        !          1576: \def\enddoublecolumns{\output={\balancecolumns}\eject
        !          1577:   \endgroup \pagegoal=\vsize}
        !          1578: 
        !          1579: \def\doublecolumnout{\splittopskip=\topskip \splitmaxdepth=\maxdepth
        !          1580:   \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
        !          1581:   \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
        !          1582:   \onepageout\pagesofar \unvbox255 \penalty\outputpenalty}
        !          1583: \def\pagesofar{\unvbox\partialpage %
        !          1584:   \hsize=\doublecolumnhsize % have to restore this since output routine
        !          1585: %            changes it to set cropmarks (P. A. MacKay, 12 Nov. 1986)
        !          1586:   \wd0=\hsize \wd2=\hsize \hbox to\pagewidth{\box0\hfil\box2}}
        !          1587: \def\balancecolumns{%
        !          1588: % Unset the glue.
        !          1589:   \setbox255=\vbox{\unvbox255}
        !          1590:   \dimen@=\ht255
        !          1591:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
        !          1592:   \divide\dimen@ by2
        !          1593:   \availdimen@=\pageheight \advance\availdimen@ by-\ht\partialpage
        !          1594: % If the remaining data is too big for one page,
        !          1595: % output one page normally, then work with what remains.
        !          1596:   \ifdim \dimen@>\availdimen@
        !          1597:    {
        !          1598:      \splittopskip=\topskip \splitmaxdepth=\maxdepth
        !          1599:      \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
        !          1600:      \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
        !          1601:      \onepageout\pagesofar
        !          1602:    }
        !          1603: % Recompute size of what remains, in case we just output some of it.
        !          1604:   \dimen@=\ht255
        !          1605:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
        !          1606:   \divide\dimen@ by2
        !          1607:   \fi
        !          1608:   \setbox0=\vbox{\unvbox255}
        !          1609:   \splittopskip=\topskip
        !          1610:   {\vbadness=10000 \loop \global\setbox3=\copy0
        !          1611:     \global\setbox1=\vsplit3 to\dimen@
        !          1612:     \ifdim\ht3>\dimen@ \global\advance\dimen@ by1pt \repeat}
        !          1613:   \setbox0=\vbox to\dimen@{\unvbox1}  \setbox2=\vbox to\dimen@{\unvbox3}
        !          1614:   \pagesofar}
        !          1615: 
        !          1616: \catcode `\@=\other
        !          1617: \message{sectioning,}
        !          1618: % Define chapters, sections, etc.
        !          1619: 
        !          1620: \newcount \chapno
        !          1621: \newcount \secno        \secno=0
        !          1622: \newcount \subsecno     \subsecno=0
        !          1623: \newcount \subsubsecno  \subsubsecno=0
        !          1624: 
        !          1625: % This counter is funny since it counts through charcodes of letters A, B, ...
        !          1626: \newcount \appendixno  \appendixno = `\@
        !          1627: \def\appendixletter{\char\the\appendixno}
        !          1628: 
        !          1629: \newwrite \contentsfile
        !          1630: % This is called from \setfilename.
        !          1631: \def\opencontents{\openout \contentsfile = \jobname.toc}
        !          1632: 
        !          1633: % Each @chapter defines this as the name of the chapter.
        !          1634: % page headings and footings can use it.  @section does likewise
        !          1635: 
        !          1636: \def\thischapter{} \def\thissection{}
        !          1637: \def\seccheck#1{\if \pageno<0 %
        !          1638: \errmessage{@#1 not allowed after generating table of contents}\fi
        !          1639: %
        !          1640: }
        !          1641: 
        !          1642: \def\chapternofonts{%
        !          1643: \let\rawbackslash=\relax%
        !          1644: \let\frenchspacing=\relax%
        !          1645: \def\result{\realbackslash result}
        !          1646: \def\equiv{\realbackslash equiv}
        !          1647: \def\expansion{\realbackslash expansion}
        !          1648: \def\print{\realbackslash print}
        !          1649: \def\TeX{\realbackslash TeX}
        !          1650: \def\dots{\realbackslash dots}
        !          1651: \def\copyright{\realbackslash copyright}
        !          1652: \def\tt{\realbackslash tt}
        !          1653: \def\bf{\realbackslash bf }
        !          1654: \def\w{\realbackslash w}
        !          1655: \def\less{\realbackslash less}
        !          1656: \def\gtr{\realbackslash gtr}
        !          1657: \def\hat{\realbackslash hat}
        !          1658: \def\char{\realbackslash char}
        !          1659: \def\tclose##1{\realbackslash tclose {##1}}
        !          1660: \def\code##1{\realbackslash code {##1}}
        !          1661: \def\samp##1{\realbackslash samp {##1}}
        !          1662: \def\r##1{\realbackslash r {##1}}
        !          1663: \def\b##1{\realbackslash b {##1}}
        !          1664: \def\key##1{\realbackslash key {##1}}
        !          1665: \def\file##1{\realbackslash file {##1}}
        !          1666: \def\kbd##1{\realbackslash kbd {##1}}
        !          1667: % These are redefined because @smartitalic wouldn't work inside xdef.
        !          1668: \def\i##1{\realbackslash i {##1}}
        !          1669: \def\cite##1{\realbackslash cite {##1}}
        !          1670: \def\var##1{\realbackslash var {##1}}
        !          1671: \def\emph##1{\realbackslash emph {##1}}
        !          1672: \def\dfn##1{\realbackslash dfn {##1}}
        !          1673: }
        !          1674: 
        !          1675: \def\thischaptername{No Chapter Title}
        !          1676: \outer\def\chapter{\parsearg\chapterzzz}
        !          1677: \def\chapterzzz #1{\seccheck{chapter}%
        !          1678: \secno=0 \subsecno=0 \subsubsecno=0
        !          1679: \global\advance \chapno by 1 \message{Chapter \the\chapno}%
        !          1680: \chapmacro {#1}{\the\chapno}%
        !          1681: \gdef\thissection{#1}%
        !          1682: \gdef\thischaptername{#1}%
        !          1683: % We don't substitute the actual chapter name into \thischapter
        !          1684: % because we don't want its macros evaluated now.
        !          1685: \xdef\thischapter{Chapter \the\chapno: \noexpand\thischaptername}%
        !          1686: {\chapternofonts%
        !          1687: \edef\temp{{\realbackslash chapentry {#1}{\the\chapno}{\noexpand\folio}}}%
        !          1688: \escapechar=`\\%
        !          1689: \write \contentsfile \temp  %
        !          1690: \donoderef %
        !          1691: \global\let\section = \numberedsec
        !          1692: \global\let\subsection = \numberedsubsec
        !          1693: \global\let\subsubsection = \numberedsubsubsec
        !          1694: }}
        !          1695: 
        !          1696: \outer\def\appendix{\parsearg\appendixzzz}
        !          1697: \def\appendixzzz #1{\seccheck{appendix}%
        !          1698: \secno=0 \subsecno=0 \subsubsecno=0
        !          1699: \global\advance \appendixno by 1 \message{Appendix \appendixletter}%
        !          1700: \chapmacro {#1}{Appendix \appendixletter}%
        !          1701: \gdef\thissection{#1}%
        !          1702: \gdef\thischaptername{#1}%
        !          1703: \xdef\thischapter{Appendix \appendixletter: \noexpand\thischaptername}%
        !          1704: {\chapternofonts%
        !          1705: \edef\temp{{\realbackslash chapentry 
        !          1706:   {#1}{Appendix \appendixletter}{\noexpand\folio}}}%
        !          1707: \escapechar=`\\%
        !          1708: \write \contentsfile \temp  %
        !          1709: \appendixnoderef %
        !          1710: \global\let\section = \appendixsec
        !          1711: \global\let\subsection = \appendixsubsec
        !          1712: \global\let\subsubsection = \appendixsubsubsec
        !          1713: }}
        !          1714: 
        !          1715: \outer\def\top{\parsearg\unnumberedzzz}
        !          1716: \outer\def\unnumbered{\parsearg\unnumberedzzz}
        !          1717: \def\unnumberedzzz #1{\seccheck{unnumbered}%
        !          1718: \secno=0 \subsecno=0 \subsubsecno=0 \message{(#1)}
        !          1719: \unnumbchapmacro {#1}%
        !          1720: \gdef\thischapter{#1}\gdef\thissection{#1}%
        !          1721: {\chapternofonts%
        !          1722: \edef\temp{{\realbackslash unnumbchapentry {#1}{\noexpand\folio}}}%
        !          1723: \escapechar=`\\%
        !          1724: \write \contentsfile \temp  %
        !          1725: \unnumbnoderef %
        !          1726: \global\let\section = \unnumberedsec
        !          1727: \global\let\subsection = \unnumberedsubsec
        !          1728: \global\let\subsubsection = \unnumberedsubsubsec
        !          1729: }}
        !          1730: 
        !          1731: \outer\def\numberedsec{\parsearg\seczzz}
        !          1732: \def\seczzz #1{\seccheck{section}%
        !          1733: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
        !          1734: \gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
        !          1735: {\chapternofonts%
        !          1736: \edef\temp{{\realbackslash secentry %
        !          1737: {#1}{\the\chapno}{\the\secno}{\noexpand\folio}}}%
        !          1738: \escapechar=`\\%
        !          1739: \write \contentsfile \temp %
        !          1740: \donoderef %
        !          1741: \penalty 10000 %
        !          1742: }}
        !          1743: 
        !          1744: \outer\def\appendixsection{\parsearg\appendixsectionzzz}
        !          1745: \outer\def\appendixsec{\parsearg\appendixsectionzzz}
        !          1746: \def\appendixsectionzzz #1{\seccheck{appendixsection}%
        !          1747: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
        !          1748: \gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
        !          1749: {\chapternofonts%
        !          1750: \edef\temp{{\realbackslash secentry %
        !          1751: {#1}{\appendixletter}{\the\secno}{\noexpand\folio}}}%
        !          1752: \escapechar=`\\%
        !          1753: \write \contentsfile \temp %
        !          1754: \appendixnoderef %
        !          1755: \penalty 10000 %
        !          1756: }}
        !          1757: 
        !          1758: \outer\def\unnumberedsec{\parsearg\unnumberedseczzz}
        !          1759: \def\unnumberedseczzz #1{\seccheck{unnumberedsec}%
        !          1760: \plainsecheading {#1}\gdef\thissection{#1}%
        !          1761: {\chapternofonts%
        !          1762: \edef\temp{{\realbackslash unnumbsecentry{#1}{\noexpand\folio}}}%
        !          1763: \escapechar=`\\%
        !          1764: \write \contentsfile \temp %
        !          1765: \unnumbnoderef %
        !          1766: \penalty 10000 %
        !          1767: }}
        !          1768: 
        !          1769: \outer\def\numberedsubsec{\parsearg\numberedsubseczzz}
        !          1770: \def\numberedsubseczzz #1{\seccheck{subsection}%
        !          1771: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
        !          1772: \subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
        !          1773: {\chapternofonts%
        !          1774: \edef\temp{{\realbackslash subsecentry %
        !          1775: {#1}{\the\chapno}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
        !          1776: \escapechar=`\\%
        !          1777: \write \contentsfile \temp %
        !          1778: \donoderef %
        !          1779: \penalty 10000 %
        !          1780: }}
        !          1781: 
        !          1782: \outer\def\appendixsubsec{\parsearg\appendixsubseczzz}
        !          1783: \def\appendixsubseczzz #1{\seccheck{appendixsubsec}%
        !          1784: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
        !          1785: \subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
        !          1786: {\chapternofonts%
        !          1787: \edef\temp{{\realbackslash subsecentry %
        !          1788: {#1}{\appendixletter}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
        !          1789: \escapechar=`\\%
        !          1790: \write \contentsfile \temp %
        !          1791: \appendixnoderef %
        !          1792: \penalty 10000 %
        !          1793: }}
        !          1794: 
        !          1795: \outer\def\unnumberedsubsec{\parsearg\unnumberedsubseczzz}
        !          1796: \def\unnumberedsubseczzz #1{\seccheck{unnumberedsubsec}%
        !          1797: \plainsecheading {#1}\gdef\thissection{#1}%
        !          1798: {\chapternofonts%
        !          1799: \edef\temp{{\realbackslash unnumbsubsecentry{#1}{\noexpand\folio}}}%
        !          1800: \escapechar=`\\%
        !          1801: \write \contentsfile \temp %
        !          1802: \unnumbnoderef %
        !          1803: \penalty 10000 %
        !          1804: }}
        !          1805: 
        !          1806: \outer\def\numberedsubsubsec{\parsearg\numberedsubsubseczzz}
        !          1807: \def\numberedsubsubseczzz #1{\seccheck{subsubsection}%
        !          1808: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
        !          1809: \subsubsecheading {#1}
        !          1810:   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
        !          1811: {\chapternofonts%
        !          1812: \edef\temp{{\realbackslash subsubsecentry %
        !          1813:   {#1}
        !          1814:   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}
        !          1815:   {\noexpand\folio}}}%
        !          1816: \escapechar=`\\%
        !          1817: \write \contentsfile \temp %
        !          1818: \donoderef %
        !          1819: \penalty 10000 %
        !          1820: }}
        !          1821: 
        !          1822: \outer\def\appendixsubsubsec{\parsearg\appendixsubsubseczzz}
        !          1823: \def\appendixsubsubseczzz #1{\seccheck{appendixsubsubsec}%
        !          1824: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
        !          1825: \subsubsecheading {#1}
        !          1826:   {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
        !          1827: {\chapternofonts%
        !          1828: \edef\temp{{\realbackslash subsubsecentry{#1}%
        !          1829:   {\appendixletter}
        !          1830:   {\the\secno}{\the\subsecno}{\the\subsubsecno}{\noexpand\folio}}}%
        !          1831: \escapechar=`\\%
        !          1832: \write \contentsfile \temp %
        !          1833: \appendixnoderef %
        !          1834: \penalty 10000 %
        !          1835: }}
        !          1836: 
        !          1837: \outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
        !          1838: \def\unnumberedsubsubseczzz #1{\seccheck{unnumberedsubsubsec}%
        !          1839: \plainsecheading {#1}\gdef\thissection{#1}%
        !          1840: {\chapternofonts%
        !          1841: \edef\temp{{\realbackslash unnumbsubsubsecentry{#1}{\noexpand\folio}}}%
        !          1842: \escapechar=`\\%
        !          1843: \write \contentsfile \temp %
        !          1844: \unnumbnoderef %
        !          1845: \penalty 10000 %
        !          1846: }}
        !          1847: 
        !          1848: % These are variants which are not "outer", so they can appear in @ifinfo.
        !          1849: % Actually, they should now be obsolete; ordinary section commands should work.
        !          1850: \def\infotop{\parsearg\unnumberedzzz}
        !          1851: \def\infounnumbered{\parsearg\unnumberedzzz}
        !          1852: \def\infounnumberedsec{\parsearg\unnumberedseczzz}
        !          1853: \def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
        !          1854: \def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
        !          1855: 
        !          1856: \def\infoappendix{\parsearg\appendixzzz}
        !          1857: \def\infoappendixsec{\parsearg\appendixseczzz}
        !          1858: \def\infoappendixsubsec{\parsearg\appendixsubseczzz}
        !          1859: \def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
        !          1860: 
        !          1861: \def\infochapter{\parsearg\chapterzzz}
        !          1862: \def\infosection{\parsearg\sectionzzz}
        !          1863: \def\infosubsection{\parsearg\subsectionzzz}
        !          1864: \def\infosubsubsection{\parsearg\subsubsectionzzz}
        !          1865: 
        !          1866: % These macros control what the section commands do, according
        !          1867: % to what kind of chapter we are in (ordinary, appendix, or unnumbered).
        !          1868: % Define them by default for a numbered chapter.
        !          1869: \global\let\section = \numberedsec
        !          1870: \global\let\subsection = \numberedsubsec
        !          1871: \global\let\subsubsection = \numberedsubsubsec
        !          1872: 
        !          1873: % Define @majorheading, @heading and @subheading
        !          1874: 
        !          1875: % NOTE on use of \vbox for chapter headings, section headings, and
        !          1876: % such:
        !          1877: %      1) We use \vbox rather than the earlier \line to permit
        !          1878: %         overlong headings to fold.
        !          1879: %      2) \hyphenpenalty is set to 10000 because hyphenation in a
        !          1880: %         heading is obnoxious; this forbids it.
        !          1881: %       3) Likewise, headings look best if no \parindent is used, and
        !          1882: %          if justification is not attempted.  Hence \raggedright.
        !          1883: 
        !          1884: 
        !          1885: \def\majorheading{\parsearg\majorheadingzzz}
        !          1886: \def\majorheadingzzz #1{%
        !          1887: {\advance\chapheadingskip by 10pt \chapbreak }%
        !          1888: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          1889:                   \parindent=0pt\raggedright
        !          1890:                   \rm #1\hfill}}\bigskip \par\penalty 200}
        !          1891: 
        !          1892: \def\chapheading{\parsearg\chapheadingzzz}
        !          1893: \def\chapheadingzzz #1{\chapbreak %
        !          1894: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          1895:                   \parindent=0pt\raggedright
        !          1896:                   \rm #1\hfill}}\bigskip \par\penalty 200}
        !          1897: 
        !          1898: \def\heading{\parsearg\secheadingi}
        !          1899: 
        !          1900: \def\subheading{\parsearg\subsecheadingi}
        !          1901: 
        !          1902: \def\subsubheading{\parsearg\subsubsecheadingi}
        !          1903: 
        !          1904: % These macros generate a chapter, section, etc. heading only
        !          1905: % (including whitespace, linebreaking, etc. around it),
        !          1906: % given all the information in convenient, parsed form.
        !          1907: 
        !          1908: %%% Args are the skip and penalty (usually negative)
        !          1909: \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
        !          1910: 
        !          1911: \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
        !          1912: 
        !          1913: %%% Define plain chapter starts, and page on/off switching for it
        !          1914: % Parameter controlling skip before chapter headings (if needed)
        !          1915: 
        !          1916: \newskip \chapheadingskip \chapheadingskip = 30pt plus 8pt minus 4pt
        !          1917: 
        !          1918: \def\chapbreak{\dobreak \chapheadingskip {-4000}}
        !          1919: \def\chappager{\par\vfill\supereject}
        !          1920: \def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
        !          1921: 
        !          1922: \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
        !          1923: 
        !          1924: \def\CHAPPAGoff{
        !          1925: \global\let\pchapsepmacro=\chapbreak
        !          1926: \global\let\pagealignmacro=\chappager}
        !          1927: 
        !          1928: \def\CHAPPAGon{
        !          1929: \global\let\pchapsepmacro=\chappager
        !          1930: \global\let\pagealignmacro=\chappager
        !          1931: \global\def\HEADINGSon{\HEADINGSsingle}}
        !          1932: 
        !          1933: \def\CHAPPAGodd{
        !          1934: \global\let\pchapsepmacro=\chapoddpage
        !          1935: \global\let\pagealignmacro=\chapoddpage
        !          1936: \global\def\HEADINGSon{\HEADINGSdouble}}
        !          1937: 
        !          1938: \CHAPPAGon
        !          1939: 
        !          1940: \def\CHAPFplain{
        !          1941: \global\let\chapmacro=\chfplain
        !          1942: \global\let\unnumbchapmacro=\unnchfplain}
        !          1943: 
        !          1944: \def\chfplain #1#2{%
        !          1945:   \pchapsepmacro
        !          1946:   {%
        !          1947:     \chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          1948:                      \parindent=0pt\raggedright
        !          1949:                      \rm #2\enspace #1}%
        !          1950:   }%
        !          1951:   \bigskip
        !          1952:   \penalty5000
        !          1953: }
        !          1954: 
        !          1955: \def\unnchfplain #1{%
        !          1956: \pchapsepmacro %
        !          1957: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          1958:                   \parindent=0pt\raggedright
        !          1959:                   \rm #1\hfill}}\bigskip \par\penalty 10000 %
        !          1960: }
        !          1961: \CHAPFplain % The default
        !          1962: 
        !          1963: \def\unnchfopen #1{%
        !          1964: \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          1965:                        \parindent=0pt\raggedright
        !          1966:                        \rm #1\hfill}}\bigskip \par\penalty 10000 %
        !          1967: }
        !          1968: 
        !          1969: \def\chfopen #1#2{\chapoddpage {\chapfonts
        !          1970: \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
        !          1971: \par\penalty 5000 %
        !          1972: }
        !          1973: 
        !          1974: \def\CHAPFopen{
        !          1975: \global\let\chapmacro=\chfopen
        !          1976: \global\let\unnumbchapmacro=\unnchfopen}
        !          1977: 
        !          1978: % Parameter controlling skip before section headings.
        !          1979: 
        !          1980: \newskip \subsecheadingskip  \subsecheadingskip = 17pt plus 8pt minus 4pt
        !          1981: \def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
        !          1982: 
        !          1983: \newskip \secheadingskip  \secheadingskip = 21pt plus 8pt minus 4pt
        !          1984: \def\secheadingbreak{\dobreak \secheadingskip {-1000}}
        !          1985: 
        !          1986: % @paragraphindent  is defined for the Info formatting commands only.
        !          1987: \let\paragraphindent=\comment
        !          1988: 
        !          1989: % Section fonts are the base font at magstep2, which produces
        !          1990: % a size a bit more than 14 points in the default situation.   
        !          1991: 
        !          1992: \def\secheading #1#2#3{\secheadingi {#2.#3\enspace #1}}
        !          1993: \def\plainsecheading #1{\secheadingi {#1}}
        !          1994: \def\secheadingi #1{{\advance \secheadingskip by \parskip %
        !          1995: \secheadingbreak}%
        !          1996: {\secfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          1997:                  \parindent=0pt\raggedright
        !          1998:                  \rm #1\hfill}}%
        !          1999: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
        !          2000: 
        !          2001: 
        !          2002: % Subsection fonts are the base font at magstep1, 
        !          2003: % which produces a size of 12 points.
        !          2004: 
        !          2005: \def\subsecheading #1#2#3#4{\subsecheadingi {#2.#3.#4\enspace #1}}
        !          2006: \def\subsecheadingi #1{{\advance \subsecheadingskip by \parskip %
        !          2007: \subsecheadingbreak}%
        !          2008: {\subsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2009:                      \parindent=0pt\raggedright
        !          2010:                      \rm #1\hfill}}%
        !          2011: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
        !          2012: 
        !          2013: \def\subsubsecfonts{\subsecfonts} % Maybe this should change:
        !          2014:                                  % Perhaps make sssec fonts scaled
        !          2015:                                  % magstep half
        !          2016: \def\subsubsecheading #1#2#3#4#5{\subsubsecheadingi {#2.#3.#4.#5\enspace #1}}
        !          2017: \def\subsubsecheadingi #1{{\advance \subsecheadingskip by \parskip %
        !          2018: \subsecheadingbreak}%
        !          2019: {\subsubsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2020:                        \parindent=0pt\raggedright
        !          2021:                        \rm #1\hfill}}%
        !          2022: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000}
        !          2023: 
        !          2024: 
        !          2025: \message{toc printing,}
        !          2026: 
        !          2027: % Finish up the main text and prepare to read what we've written
        !          2028: % to \contentsfile.
        !          2029: 
        !          2030: \newskip\contentsrightmargin \contentsrightmargin=1in
        !          2031: \def\startcontents#1{%
        !          2032:    \pagealignmacro
        !          2033:    \immediate\closeout \contentsfile
        !          2034:    \ifnum \pageno>0
        !          2035:       \pageno = -1             % Request roman numbered pages.
        !          2036:    \fi
        !          2037:    % Don't need to put `Contents' or `Short Contents' in the headline. 
        !          2038:    % It is abundantly clear what they are.
        !          2039:    \unnumbchapmacro{#1}\def\thischapter{}%
        !          2040:    \begingroup                 % Set up to handle contents files properly.
        !          2041:       \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11
        !          2042:       \raggedbottom             % Worry more about breakpoints than the bottom.
        !          2043:       \advance\hsize by -\contentsrightmargin % Don't use the full line length.
        !          2044: }
        !          2045: 
        !          2046:   
        !          2047: % Normal (long) toc.
        !          2048: \outer\def\contents{%
        !          2049:    \startcontents{Table of Contents}%
        !          2050:       \input \jobname.toc
        !          2051:    \endgroup
        !          2052:    \vfill \eject
        !          2053: }
        !          2054: 
        !          2055: % And just the chapters.
        !          2056: \outer\def\summarycontents{%
        !          2057:    \startcontents{Short Contents}%
        !          2058:       %
        !          2059:       \let\chapentry = \shortchapentry
        !          2060:       \let\unnumbchapentry = \shortunnumberedentry
        !          2061:       % We want a true roman here for the page numbers.
        !          2062:       \secfonts
        !          2063:       \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl
        !          2064:       \rm
        !          2065:       \advance\baselineskip by 1pt % Open it up a little.
        !          2066:       \def\secentry ##1##2##3##4{}
        !          2067:       \def\unnumbsecentry ##1##2{}
        !          2068:       \def\subsecentry ##1##2##3##4##5{}
        !          2069:       \def\unnumbsubsecentry ##1##2{}
        !          2070:       \def\subsubsecentry ##1##2##3##4##5##6{}
        !          2071:       \def\unnumbsubsubsecentry ##1##2{}
        !          2072:       \input \jobname.toc
        !          2073:    \endgroup
        !          2074:    \vfill \eject
        !          2075: }
        !          2076: \let\shortcontents = \summarycontents
        !          2077: 
        !          2078: % These macros generate individual entries in the table of contents.
        !          2079: % The first argument is the chapter or section name.
        !          2080: % The last argument is the page number.
        !          2081: % The arguments in between are the chapter number, section number, ...
        !          2082: 
        !          2083: % Chapter-level things, for both the long and short contents.
        !          2084: \def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
        !          2085: 
        !          2086: % See comments in \dochapentry re vbox and related settings
        !          2087: \def\shortchapentry#1#2#3{%
        !          2088:    \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2089:     \parindent=0pt\strut\raggedright
        !          2090:     {#2\labelspace #1}\dotfill\doshortpageno{#3}}%
        !          2091: }
        !          2092: 
        !          2093: \def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
        !          2094: \def\shortunnumberedentry#1#2{%
        !          2095:    \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2096:     \parindent=0pt\strut\raggedright
        !          2097:     #1\dotfill\doshortpageno{#2}}%
        !          2098: }
        !          2099: 
        !          2100: % Sections.
        !          2101: \def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
        !          2102: \def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
        !          2103: 
        !          2104: % Subsections.
        !          2105: \def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
        !          2106: \def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
        !          2107: 
        !          2108: % And subsubsections.
        !          2109: \def\subsubsecentry#1#2#3#4#5#6{%
        !          2110:   \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
        !          2111: \def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
        !          2112: 
        !          2113: 
        !          2114: % This parameter controls the indentation of the various levels.
        !          2115: \newdimen\tocindent \tocindent = 3pc
        !          2116: 
        !          2117: % Now for the actual typesetting. In all these, #1 is the text and #2 is the 
        !          2118: % page number.
        !          2119: %
        !          2120: % If the toc has to be broken over pages, we would want to be at chapters 
        !          2121: % if at all possible; hence the \penalty.
        !          2122: \def\dochapentry#1#2{%
        !          2123:    \penalty-300 \vskip\baselineskip
        !          2124:    % This \vbox (and similar ones in dosecentry etc.) used to be a
        !          2125:    % \line; changed to permit linebreaks for long headings.  See
        !          2126:    % comments above \majorheading.  Here we also use \strut to
        !          2127:    % keep the top end of the vbox from jamming up against the previous
        !          2128:    % entry in the table of contents.
        !          2129:    \vbox{\chapentryfonts
        !          2130:      \hyphenpenalty=10000\tolerance=5000 % this line and next introduced
        !          2131:      \parindent=0pt\strut\raggedright    % with \line -> \vbox change
        !          2132:      #1\dotfill
        !          2133:      \dopageno{#2}}%
        !          2134:    \nobreak\vskip .25\baselineskip
        !          2135: }
        !          2136: 
        !          2137: \def\dosecentry#1#2{%
        !          2138:    \vbox{\secentryfonts \leftskip=\tocindent
        !          2139:     \hyphenpenalty=10000\tolerance=5000
        !          2140:     \parindent=0pt\strut\raggedright #1\dotfill
        !          2141:     \dopageno{#2}}%
        !          2142: }
        !          2143: 
        !          2144: \def\dosubsecentry#1#2{%
        !          2145:    \vbox{\subsecentryfonts \leftskip=2\tocindent
        !          2146:     \hyphenpenalty=10000\tolerance=5000
        !          2147:     \parindent=0pt\strut\raggedright #1\dotfill
        !          2148:     \dopageno{#2}}%
        !          2149: }
        !          2150: 
        !          2151: \def\dosubsubsecentry#1#2{%
        !          2152:    \vbox{\subsubsecentryfonts \leftskip=3\tocindent
        !          2153:     \hyphenpenalty=10000\tolerance=5000
        !          2154:     \parindent=0pt\strut\raggedright #1\dotfill
        !          2155:     \dopageno{#2}}%
        !          2156: }
        !          2157: 
        !          2158: % Space between chapter (or whatever) number and the title.
        !          2159: \def\labelspace{\hskip1em \relax}
        !          2160: 
        !          2161: \def\dopageno#1{{\rm #1}}
        !          2162: \def\doshortpageno#1{{\rm #1}}
        !          2163: 
        !          2164: \def\chapentryfonts{\secfonts \rm}
        !          2165: \def\secentryfonts{\textfonts}
        !          2166: \let\subsecentryfonts = \textfonts
        !          2167: \let\subsubsecentryfonts = \textfonts
        !          2168: 
        !          2169: 
        !          2170: \message{environments,}
        !          2171: 
        !          2172: % Since these characters are used in examples, it should be an even number of 
        !          2173: % \tt widths. Each \tt character is 1en, so two makes it 1em.
        !          2174: % Furthermore, these definitions must come after we define our fonts.
        !          2175: \newbox\dblarrowbox    \newbox\longdblarrowbox
        !          2176: \newbox\pushcharbox    \newbox\bullbox
        !          2177: \newbox\equivbox       \newbox\errorbox
        !          2178: 
        !          2179: \let\ptexequiv = \equiv
        !          2180: 
        !          2181: %{\tentt
        !          2182: %\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
        !          2183: %\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
        !          2184: %\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
        !          2185: %\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
        !          2186: % Adapted from the manmac format (p.420 of TeXbook)
        !          2187: %\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
        !          2188: %                                      depth .1ex\hfil}
        !          2189: %}
        !          2190: 
        !          2191: \def\point{$\star$}
        !          2192: 
        !          2193: \def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
        !          2194: \def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
        !          2195: \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
        !          2196: 
        !          2197: \def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
        !          2198: 
        !          2199: % Adapted from the TeXbook's \boxit.
        !          2200: {\tentt \global\dimen0 = 3em}% Width of the box.
        !          2201: \dimen2 = .55pt % Thickness of rules
        !          2202: % The text. (`r' is open on the right, `e' somewhat less so on the left.)
        !          2203: \setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
        !          2204: 
        !          2205: \global\setbox\errorbox=\hbox to \dimen0{\hfil
        !          2206:    \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
        !          2207:    \advance\hsize by -2\dimen2 % Rules.
        !          2208:    \vbox{
        !          2209:       \hrule height\dimen2
        !          2210:       \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
        !          2211:          \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
        !          2212:          \kern3pt\vrule width\dimen2}% Space to right.
        !          2213:       \hrule height\dimen2}
        !          2214:     \hfil}
        !          2215: 
        !          2216: % The @error{} command.
        !          2217: \def\error{\leavevmode\lower.7ex\copy\errorbox}
        !          2218: 
        !          2219: % @tex ... @end tex    escapes into raw Tex temporarily.
        !          2220: % One exception: @ is still an escape character, so that @end tex works.
        !          2221: % But \@ or @@ will get a plain tex @ character.
        !          2222: 
        !          2223: \def\tex{\begingroup
        !          2224: \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
        !          2225: \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
        !          2226: \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
        !          2227: \catcode `\%=14
        !          2228: \catcode 43=12
        !          2229: \catcode`\"=12
        !          2230: \catcode`\==12
        !          2231: \catcode`\|=12
        !          2232: \catcode`\<=12
        !          2233: \catcode`\>=12
        !          2234: \escapechar=`\\
        !          2235: %
        !          2236: \let\{=\ptexlbrace
        !          2237: \let\}=\ptexrbrace
        !          2238: \let\.=\ptexdot
        !          2239: \let\*=\ptexstar
        !          2240: \let\dots=\ptexdots
        !          2241: \def\@{@}%
        !          2242: \let\bullet=\ptexbullet
        !          2243: \let\b=\ptexb \let\c=\ptexc \let\i=\ptexi \let\t=\ptext \let\l=\ptexl
        !          2244: \let\L=\ptexL
        !          2245: %
        !          2246: \let\Etex=\endgroup}
        !          2247: 
        !          2248: % Define @lisp ... @endlisp.
        !          2249: % @lisp does a \begingroup so it can rebind things,
        !          2250: % including the definition of @endlisp (which normally is erroneous).
        !          2251: 
        !          2252: % Amount to narrow the margins by for @lisp.
        !          2253: \newskip\lispnarrowing \lispnarrowing=0.4in
        !          2254: 
        !          2255: % This is the definition that ^M gets inside @lisp
        !          2256: % phr: changed space to \null, to avoid overfull hbox problems.
        !          2257: {\obeyspaces%
        !          2258: \gdef\lisppar{\null\endgraf}}
        !          2259: 
        !          2260: % Cause \obeyspaces to make each Space cause a word-separation
        !          2261: % rather than the default which is that it acts punctuation.
        !          2262: % This is because space in tt font looks funny.
        !          2263: {\obeyspaces %
        !          2264: \gdef\sepspaces{\def {\ }}}
        !          2265: 
        !          2266: \newskip\aboveenvskipamount \aboveenvskipamount= 0pt
        !          2267: \def\aboveenvbreak{{\advance\aboveenvskipamount by \parskip
        !          2268: \endgraf \ifdim\lastskip<\aboveenvskipamount
        !          2269: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}}
        !          2270: 
        !          2271: \def\afterenvbreak{\endgraf \ifdim\lastskip<\aboveenvskipamount
        !          2272: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}
        !          2273: 
        !          2274: % \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins.
        !          2275: \let\nonarrowing=\relax
        !          2276: 
        !          2277: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
        !          2278: % \cartouche: draw rectangle w/rounded corners around argument
        !          2279: \font\circle=lcircle10
        !          2280: \newdimen\circthick
        !          2281: \newdimen\cartouter\newdimen\cartinner
        !          2282: \newskip\normbskip\newskip\normpskip\newskip\normlskip
        !          2283: \circthick=\fontdimen8\circle
        !          2284: %
        !          2285: \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
        !          2286: \def\ctr{{\hskip 6pt\circle\char'010}}
        !          2287: \def\cbl{{\circle\char'012\hskip -6pt}}
        !          2288: \def\cbr{{\hskip 6pt\circle\char'011}}
        !          2289: \def\carttop{\hbox to \cartouter{\hskip\lskip
        !          2290:        \ctl\leaders\hrule height\circthick\hfil\ctr
        !          2291:        \hskip\rskip}}
        !          2292: \def\cartbot{\hbox to \cartouter{\hskip\lskip
        !          2293:        \cbl\leaders\hrule height\circthick\hfil\cbr
        !          2294:        \hskip\rskip}}
        !          2295: %
        !          2296: \newskip\lskip\newskip\rskip
        !          2297: 
        !          2298: \long\def\cartouche{%
        !          2299: \begingroup
        !          2300:        \lskip=\leftskip \rskip=\rightskip
        !          2301:        \leftskip=0pt\rightskip=0pt %we want these *outside*.
        !          2302:        \cartinner=\hsize \advance\cartinner by-\lskip 
        !          2303:                          \advance\cartinner by-\rskip
        !          2304:        \cartouter=\hsize
        !          2305:        \advance\cartouter by 18pt % allow for 3pt kerns on either
        !          2306: %                                   side, and for 6pt waste from
        !          2307: %                                   each corner char
        !          2308:        \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
        !          2309:        % Flag to tell @lisp, etc., not to narrow margin.
        !          2310:        \let\nonarrowing=\comment
        !          2311:        \vbox\bgroup
        !          2312:                \baselineskip=0pt\parskip=0pt\lineskip=0pt
        !          2313:                \carttop
        !          2314:                \hbox\bgroup
        !          2315:                        \hskip\lskip
        !          2316:                        \vrule\kern3pt
        !          2317:                        \vbox\bgroup
        !          2318:                                \hsize=\cartinner
        !          2319:                                \kern3pt
        !          2320:                                \begingroup
        !          2321:                                        \baselineskip=\normbskip
        !          2322:                                        \lineskip=\normlskip
        !          2323:                                        \parskip=\normpskip
        !          2324:                                        \vskip -\parskip
        !          2325: \def\Ecartouche{%
        !          2326:                                \endgroup
        !          2327:                                \kern3pt
        !          2328:                        \egroup
        !          2329:                        \kern3pt\vrule
        !          2330:                        \hskip\rskip
        !          2331:                \egroup
        !          2332:                \cartbot
        !          2333:        \egroup
        !          2334: \endgroup
        !          2335: }}     
        !          2336: 
        !          2337: \def\lisp{\aboveenvbreak
        !          2338: \begingroup\inENV % This group ends at the end of the @lisp body
        !          2339: \hfuzz=12truept % Don't be fussy
        !          2340: % Make spaces be word-separators rather than space tokens.
        !          2341: \sepspaces %
        !          2342: % Single space lines
        !          2343: \singlespace %
        !          2344: % The following causes blank lines not to be ignored
        !          2345: % by adding a space to the end of each line.
        !          2346: \let\par=\lisppar
        !          2347: \def\Elisp{\endgroup\afterenvbreak}%
        !          2348: \parskip=0pt
        !          2349: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2350: % at next level down.
        !          2351: \ifx\nonarrowing\relax
        !          2352: \advance \leftskip by \lispnarrowing
        !          2353: \exdentamount=\lispnarrowing
        !          2354: \let\exdent=\nofillexdent
        !          2355: \let\nonarrowing=\relax
        !          2356: \fi
        !          2357: \parindent=0pt
        !          2358: \obeyspaces \obeylines \tt \rawbackslash
        !          2359: \def\next##1{}\next}
        !          2360: 
        !          2361: 
        !          2362: \let\example=\lisp
        !          2363: \def\Eexample{\Elisp}
        !          2364: 
        !          2365: \let\smallexample=\lisp
        !          2366: \def\Esmallexample{\Elisp}
        !          2367: 
        !          2368: % Macro for 9 pt. examples, necessary to print with 5" lines.
        !          2369: % From Pavel@xerox.  This is not really used unless the
        !          2370: % @smallbook command is given.
        !          2371: 
        !          2372: \def\smalllispx{\aboveenvbreak\begingroup\inENV
        !          2373: %                      This group ends at the end of the @lisp body
        !          2374: \hfuzz=12truept % Don't be fussy
        !          2375: % Make spaces be word-separators rather than space tokens.
        !          2376: \sepspaces %
        !          2377: % Single space lines
        !          2378: \singlespace %
        !          2379: % The following causes blank lines not to be ignored
        !          2380: % by adding a space to the end of each line.
        !          2381: \let\par=\lisppar
        !          2382: \def\Esmalllisp{\endgroup\afterenvbreak}%
        !          2383: %%%% Smaller baseline skip for small examples.
        !          2384: \baselineskip 10pt
        !          2385: \parskip=0pt
        !          2386: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2387: % at next level down.
        !          2388: \ifx\nonarrowing\relax
        !          2389: \advance \leftskip by \lispnarrowing
        !          2390: \exdentamount=\lispnarrowing
        !          2391: \let\exdent=\nofillexdent
        !          2392: \let\nonarrowing=\relax
        !          2393: \fi
        !          2394: \parindent=0pt
        !          2395: \obeyspaces \obeylines \ninett \indexfonts \rawbackslash
        !          2396: \def\next##1{}\next}
        !          2397: 
        !          2398: % This is @display; same as @lisp except use roman font.
        !          2399: 
        !          2400: \def\display{\begingroup\inENV %This group ends at the end of the @display body
        !          2401: \aboveenvbreak
        !          2402: % Make spaces be word-separators rather than space tokens.
        !          2403: \sepspaces %
        !          2404: % Single space lines
        !          2405: \singlespace %
        !          2406: % The following causes blank lines not to be ignored
        !          2407: % by adding a space to the end of each line.
        !          2408: \let\par=\lisppar
        !          2409: \def\Edisplay{\endgroup\afterenvbreak}%
        !          2410: \parskip=0pt
        !          2411: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2412: % at next level down.
        !          2413: \ifx\nonarrowing\relax
        !          2414: \advance \leftskip by \lispnarrowing
        !          2415: \exdentamount=\lispnarrowing
        !          2416: \let\exdent=\nofillexdent
        !          2417: \let\nonarrowing=\relax
        !          2418: \fi
        !          2419: \parindent=0pt
        !          2420: \obeyspaces \obeylines
        !          2421: \def\next##1{}\next}
        !          2422: 
        !          2423: % This is @format; same as @lisp except use roman font and don't narrow margins
        !          2424: 
        !          2425: \def\format{\begingroup\inENV %This group ends at the end of the @format body
        !          2426: \aboveenvbreak
        !          2427: % Make spaces be word-separators rather than space tokens.
        !          2428: \sepspaces %
        !          2429: \singlespace %
        !          2430: % The following causes blank lines not to be ignored
        !          2431: % by adding a space to the end of each line.
        !          2432: \let\par=\lisppar
        !          2433: \def\Eformat{\endgroup\afterenvbreak}
        !          2434: \parskip=0pt \parindent=0pt
        !          2435: \obeyspaces \obeylines
        !          2436: \def\next##1{}\next}
        !          2437: 
        !          2438: % @flushleft and @flushright
        !          2439: 
        !          2440: \def\flushleft{%
        !          2441: \begingroup\inENV %This group ends at the end of the @format body
        !          2442: \aboveenvbreak
        !          2443: % Make spaces be word-separators rather than space tokens.
        !          2444: \sepspaces %
        !          2445: % The following causes blank lines not to be ignored
        !          2446: % by adding a space to the end of each line.
        !          2447: % This also causes @ to work when the directive name
        !          2448: % is terminated by end of line.
        !          2449: \let\par=\lisppar
        !          2450: \def\Eflushleft{\endgroup\afterenvbreak}%
        !          2451: \parskip=0pt \parindent=0pt
        !          2452: \obeyspaces \obeylines
        !          2453: \def\next##1{}\next}
        !          2454: 
        !          2455: \def\flushright{%
        !          2456: \begingroup\inENV %This group ends at the end of the @format body
        !          2457: \aboveenvbreak
        !          2458: % Make spaces be word-separators rather than space tokens.
        !          2459: \sepspaces %
        !          2460: % The following causes blank lines not to be ignored
        !          2461: % by adding a space to the end of each line.
        !          2462: % This also causes @ to work when the directive name
        !          2463: % is terminated by end of line.
        !          2464: \let\par=\lisppar
        !          2465: \def\Eflushright{\endgroup\afterenvbreak}%
        !          2466: \parskip=0pt \parindent=0pt
        !          2467: \advance \leftskip by 0pt plus 1fill
        !          2468: \obeyspaces \obeylines
        !          2469: \def\next##1{}\next}
        !          2470: 
        !          2471: % @quotation - narrow the margins.
        !          2472: 
        !          2473: \def\quotation{%
        !          2474: \begingroup\inENV %This group ends at the end of the @quotation body
        !          2475: {\parskip=0pt  % because we will skip by \parskip too, later
        !          2476: \aboveenvbreak}%
        !          2477: \singlespace
        !          2478: \parindent=0pt
        !          2479: \def\Equotation{\par\endgroup\afterenvbreak}%
        !          2480: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2481: % at next level down.
        !          2482: \ifx\nonarrowing\relax
        !          2483: \advance \leftskip by \lispnarrowing
        !          2484: \advance \rightskip by \lispnarrowing
        !          2485: \exdentamount=\lispnarrowing
        !          2486: \let\nonarrowing=\relax
        !          2487: \fi}
        !          2488: 
        !          2489: \message{defuns,}
        !          2490: % Define formatter for defuns
        !          2491: % First, allow user to change definition object font (\df) internally
        !          2492: \def\setdeffont #1 {\csname DEF#1\endcsname}
        !          2493: 
        !          2494: \newskip\defbodyindent \defbodyindent=.4in
        !          2495: \newskip\defargsindent \defargsindent=50pt
        !          2496: \newskip\deftypemargin \deftypemargin=12pt
        !          2497: \newskip\deflastargmargin \deflastargmargin=18pt
        !          2498: 
        !          2499: \newcount\parencount
        !          2500: % define \functionparens, which makes ( and ) and & do special things.
        !          2501: % \functionparens affects the group it is contained in.
        !          2502: \def\activeparens{%
        !          2503: \catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
        !          2504: \catcode`\[=\active \catcode`\]=\active}
        !          2505: {\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
        !          2506: \gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
        !          2507: \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
        !          2508: 
        !          2509: % Definitions of (, ) and & used in args for functions.
        !          2510: % This is the definition of ( outside of all parentheses.
        !          2511: \gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested %
        !          2512: \global\advance\parencount by 1 }
        !          2513: %
        !          2514: % This is the definition of ( when already inside a level of parens.
        !          2515: \gdef\opnested{\char`\(\global\advance\parencount by 1 }
        !          2516: %
        !          2517: \gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
        !          2518: % also in that case restore the outer-level definition of (.
        !          2519: \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
        !          2520: \global\advance \parencount by -1 }
        !          2521: % If we encounter &foo, then turn on ()-hacking afterwards
        !          2522: \gdef\amprm#1 {{\rm\&#1}\let(=\oprm \let)=\clrm\ }
        !          2523: %
        !          2524: \gdef\normalparens{\boldbrax\let&=\ampnr}
        !          2525: } % End of definition inside \activeparens
        !          2526: %% These parens (in \boldbrax) actually are a little bolder than the
        !          2527: %% contained text.  This is especially needed for [ and ]
        !          2528: \def\opnr{{\sf\char`\(}} \def\clnr{{\sf\char`\)}} \def\ampnr{\&}
        !          2529: \def\lbrb{{\bf\char`\[}} \def\rbrb{{\bf\char`\]}}
        !          2530: 
        !          2531: % First, defname, which formats the header line itself.
        !          2532: % #1 should be the function name.
        !          2533: % #2 should be the type of definition, such as "Function".
        !          2534: 
        !          2535: \def\defname #1#2{%
        !          2536: % Get the values of \leftskip and \rightskip as they were
        !          2537: % outside the @def...
        !          2538: \dimen2=\leftskip
        !          2539: \advance\dimen2 by -\defbodyindent
        !          2540: \dimen3=\rightskip
        !          2541: \advance\dimen3 by -\defbodyindent
        !          2542: \noindent        %
        !          2543: \setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}%
        !          2544: \dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
        !          2545: \dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
        !          2546: \parshape 2 0in \dimen0 \defargsindent \dimen1     %
        !          2547: % Now output arg 2 ("Function" or some such)
        !          2548: % ending at \deftypemargin from the right margin,
        !          2549: % but stuck inside a box of width 0 so it does not interfere with linebreaking
        !          2550: {% Adjust \hsize to exclude the ambient margins,
        !          2551: % so that \rightline will obey them.
        !          2552: \advance \hsize by -\dimen2 \advance \hsize by -\dimen3
        !          2553: \rlap{\rightline{{\rm #2}\hskip \deftypemargin}}}%
        !          2554: % Make all lines underfull and no complaints:
        !          2555: \tolerance=10000 \hbadness=10000    
        !          2556: \advance\leftskip by -\defbodyindent
        !          2557: \exdentamount=\defbodyindent
        !          2558: {\df #1}\enskip        % Generate function name
        !          2559: }
        !          2560: 
        !          2561: % Actually process the body of a definition
        !          2562: % #1 should be the terminating control sequence, such as \Edefun.
        !          2563: % #2 should be the "another name" control sequence, such as \defunx.
        !          2564: % #3 should be the control sequence that actually processes the header,
        !          2565: %    such as \defunheader.
        !          2566: 
        !          2567: \def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
        !          2568: \medbreak %
        !          2569: % Define the end token that this defining construct specifies
        !          2570: % so that it will exit this group.
        !          2571: \def#1{\endgraf\endgroup\medbreak}%
        !          2572: \def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
        !          2573: \parindent=0in
        !          2574: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2575: \exdentamount=\defbodyindent
        !          2576: \begingroup %
        !          2577: \catcode 61=\active %
        !          2578: \obeylines\activeparens\spacesplit#3}
        !          2579: 
        !          2580: \def\defmethparsebody #1#2#3#4 {\begingroup\inENV %
        !          2581: \medbreak %
        !          2582: % Define the end token that this defining construct specifies
        !          2583: % so that it will exit this group.
        !          2584: \def#1{\endgraf\endgroup\medbreak}%
        !          2585: \def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
        !          2586: \parindent=0in
        !          2587: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2588: \exdentamount=\defbodyindent
        !          2589: \begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
        !          2590: 
        !          2591: \def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
        !          2592: \medbreak %
        !          2593: % Define the end token that this defining construct specifies
        !          2594: % so that it will exit this group.
        !          2595: \def#1{\endgraf\endgroup\medbreak}%
        !          2596: \def#2##1 ##2 {\def#4{##1}%
        !          2597: \begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
        !          2598: \parindent=0in
        !          2599: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2600: \exdentamount=\defbodyindent
        !          2601: \begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
        !          2602: 
        !          2603: % These parsing functions are similar to the preceding ones
        !          2604: % except that they do not make parens into active characters.
        !          2605: % These are used for "variables" since they have no arguments.
        !          2606: 
        !          2607: \def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
        !          2608: \medbreak %
        !          2609: % Define the end token that this defining construct specifies
        !          2610: % so that it will exit this group.
        !          2611: \def#1{\endgraf\endgroup\medbreak}%
        !          2612: \def#2{\begingroup\obeylines\spacesplit#3}%
        !          2613: \parindent=0in
        !          2614: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2615: \exdentamount=\defbodyindent
        !          2616: \begingroup %
        !          2617: \catcode 61=\active %
        !          2618: \obeylines\spacesplit#3}
        !          2619: 
        !          2620: \def\defvrparsebody #1#2#3#4 {\begingroup\inENV %
        !          2621: \medbreak %
        !          2622: % Define the end token that this defining construct specifies
        !          2623: % so that it will exit this group.
        !          2624: \def#1{\endgraf\endgroup\medbreak}%
        !          2625: \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}%
        !          2626: \parindent=0in
        !          2627: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2628: \exdentamount=\defbodyindent
        !          2629: \begingroup\obeylines\spacesplit{#3{#4}}}
        !          2630: 
        !          2631: \def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV %
        !          2632: \medbreak %
        !          2633: % Define the end token that this defining construct specifies
        !          2634: % so that it will exit this group.
        !          2635: \def#1{\endgraf\endgroup\medbreak}%
        !          2636: \def#2##1 ##2 {\def#4{##1}%
        !          2637: \begingroup\obeylines\spacesplit{#3{##2}}}%
        !          2638: \parindent=0in
        !          2639: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2640: \exdentamount=\defbodyindent
        !          2641: \begingroup\obeylines\spacesplit{#3{#5}}}
        !          2642: 
        !          2643: % Split up #2 at the first space token.
        !          2644: % call #1 with two arguments:
        !          2645: %  the first is all of #2 before the space token,
        !          2646: %  the second is all of #2 after that space token.
        !          2647: % If #2 contains no space token, all of it is passed as the first arg
        !          2648: % and the second is passed as empty.
        !          2649: 
        !          2650: {\obeylines
        !          2651: \gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
        !          2652: \long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
        !          2653: \ifx\relax #3%
        !          2654: #1{#2}{}\else #1{#2}{#3#4}\fi}}
        !          2655: 
        !          2656: % So much for the things common to all kinds of definitions.
        !          2657: 
        !          2658: % Define @defun.
        !          2659: 
        !          2660: % First, define the processing that is wanted for arguments of \defun
        !          2661: % Use this to expand the args and terminate the paragraph they make up
        !          2662: 
        !          2663: \def\defunargs #1{\functionparens \sl
        !          2664: % Expand, preventing hyphenation at `-' chars.
        !          2665: % Note that groups don't affect changes in \hyphenchar.
        !          2666: \hyphenchar\tensl=0
        !          2667: #1%
        !          2668: \hyphenchar\tensl=45
        !          2669: \ifnum\parencount=0 \else \errmessage{unbalanced parens in @def arguments}\fi%
        !          2670: \interlinepenalty=10000
        !          2671: \advance\rightskip by 0pt plus 1fil
        !          2672: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
        !          2673: }
        !          2674: 
        !          2675: \def\deftypefunargs #1{%
        !          2676: % Expand, preventing hyphenation at `-' chars.
        !          2677: % Note that groups don't affect changes in \hyphenchar.
        !          2678: \functionparens
        !          2679: \code{#1}%
        !          2680: \interlinepenalty=10000
        !          2681: \advance\rightskip by 0pt plus 1fil
        !          2682: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
        !          2683: }
        !          2684: 
        !          2685: % Do complete processing of one @defun or @defunx line already parsed.
        !          2686: 
        !          2687: % @deffn Command forward-char nchars
        !          2688: 
        !          2689: \def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
        !          2690: 
        !          2691: \def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
        !          2692: \begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
        !          2693: \catcode 61=\other % Turn off change made in \defparsebody
        !          2694: }
        !          2695: 
        !          2696: % @defun == @deffn Function
        !          2697: 
        !          2698: \def\defun{\defparsebody\Edefun\defunx\defunheader}
        !          2699: 
        !          2700: \def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2701: \begingroup\defname {#1}{Function}%
        !          2702: \defunargs {#2}\endgroup %
        !          2703: \catcode 61=\other % Turn off change made in \defparsebody
        !          2704: }
        !          2705: 
        !          2706: % @deftypefun int foobar (int @var{foo}, float @var{bar})
        !          2707: 
        !          2708: \def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
        !          2709: 
        !          2710: % #1 is the data type.  #2 is the name and args.
        !          2711: \def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
        !          2712: % #1 is the data type, #2 the name, #3 the args.
        !          2713: \def\deftypefunheaderx #1#2 #3\relax{%
        !          2714: \doind {fn}{\code{#2}}% Make entry in function index
        !          2715: \begingroup\defname {\code{#1} #2}{Function}%
        !          2716: \deftypefunargs {#3}\endgroup %
        !          2717: \catcode 61=\other % Turn off change made in \defparsebody
        !          2718: }
        !          2719: 
        !          2720: % @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
        !          2721: 
        !          2722: \def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
        !          2723: 
        !          2724: % #1 is the classification.  #2 is the data type.  #3 is the name and args.
        !          2725: \def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
        !          2726: % #1 is the classification, #2 the data type, #3 the name, #4 the args.
        !          2727: \def\deftypefnheaderx #1#2#3 #4\relax{%
        !          2728: \doind {fn}{\code{#3}}% Make entry in function index
        !          2729: \begingroup\defname {\code{#2} #3}{#1}%
        !          2730: \deftypefunargs {#4}\endgroup %
        !          2731: \catcode 61=\other % Turn off change made in \defparsebody
        !          2732: }
        !          2733: 
        !          2734: % @defmac == @deffn Macro
        !          2735: 
        !          2736: \def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
        !          2737: 
        !          2738: \def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2739: \begingroup\defname {#1}{Macro}%
        !          2740: \defunargs {#2}\endgroup %
        !          2741: \catcode 61=\other % Turn off change made in \defparsebody
        !          2742: }
        !          2743: 
        !          2744: % @defspec == @deffn Special Form
        !          2745: 
        !          2746: \def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
        !          2747: 
        !          2748: \def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2749: \begingroup\defname {#1}{Special Form}%
        !          2750: \defunargs {#2}\endgroup %
        !          2751: \catcode 61=\other % Turn off change made in \defparsebody
        !          2752: }
        !          2753: 
        !          2754: % This definition is run if you use @defunx
        !          2755: % anywhere other than immediately after a @defun or @defunx.
        !          2756: 
        !          2757: \def\deffnx #1 {\errmessage{@deffnx in invalid context}}
        !          2758: \def\defunx #1 {\errmessage{@defunx in invalid context}}
        !          2759: \def\defmacx #1 {\errmessage{@defmacx in invalid context}}
        !          2760: \def\defspecx #1 {\errmessage{@defspecx in invalid context}}
        !          2761: \def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
        !          2762: \def\deftypeunx #1 {\errmessage{@deftypeunx in invalid context}}
        !          2763: 
        !          2764: % @defmethod, and so on
        !          2765: 
        !          2766: % @defop {Funny Method} foo-class frobnicate argument
        !          2767: 
        !          2768: \def\defop #1 {\def\defoptype{#1}%
        !          2769: \defopparsebody\Edefop\defopx\defopheader\defoptype}
        !          2770: 
        !          2771: \def\defopheader #1#2#3{%
        !          2772: \dosubind {fn}{\code{#2}}{on #1}% Make entry in function index
        !          2773: \begingroup\defname {#2}{\defoptype{} on #1}%
        !          2774: \defunargs {#3}\endgroup %
        !          2775: }
        !          2776: 
        !          2777: % @defmethod == @defop Method
        !          2778: 
        !          2779: \def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
        !          2780: 
        !          2781: \def\defmethodheader #1#2#3{%
        !          2782: \dosubind {fn}{\code{#2}}{on #1}% entry in function index
        !          2783: \begingroup\defname {#2}{Method on #1}%
        !          2784: \defunargs {#3}\endgroup %
        !          2785: }
        !          2786: 
        !          2787: % @defcv {Class Option} foo-class foo-flag
        !          2788: 
        !          2789: \def\defcv #1 {\def\defcvtype{#1}%
        !          2790: \defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
        !          2791: 
        !          2792: \def\defcvarheader #1#2#3{%
        !          2793: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
        !          2794: \begingroup\defname {#2}{\defcvtype{} of #1}%
        !          2795: \defvarargs {#3}\endgroup %
        !          2796: }
        !          2797: 
        !          2798: % @defivar == @defcv {Instance Variable}
        !          2799: 
        !          2800: \def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader}
        !          2801: 
        !          2802: \def\defivarheader #1#2#3{%
        !          2803: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
        !          2804: \begingroup\defname {#2}{Instance Variable of #1}%
        !          2805: \defvarargs {#3}\endgroup %
        !          2806: }
        !          2807: 
        !          2808: % These definitions are run if you use @defmethodx, etc.,
        !          2809: % anywhere other than immediately after a @defmethod, etc.
        !          2810: 
        !          2811: \def\defopx #1 {\errmessage{@defopx in invalid context}}
        !          2812: \def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
        !          2813: \def\defcvx #1 {\errmessage{@defcvx in invalid context}}
        !          2814: \def\defivarx #1 {\errmessage{@defivarx in invalid context}}
        !          2815: 
        !          2816: % Now @defvar
        !          2817: 
        !          2818: % First, define the processing that is wanted for arguments of @defvar.
        !          2819: % This is actually simple: just print them in roman.
        !          2820: % This must expand the args and terminate the paragraph they make up
        !          2821: \def\defvarargs #1{\normalparens #1%
        !          2822: \interlinepenalty=10000
        !          2823: \endgraf\penalty 10000\vskip -\parskip\penalty 10000}
        !          2824: 
        !          2825: % @defvr Counter foo-count
        !          2826: 
        !          2827: \def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader}
        !          2828: 
        !          2829: \def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
        !          2830: \begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
        !          2831: 
        !          2832: % @defvar == @defvr Variable
        !          2833: 
        !          2834: \def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader}
        !          2835: 
        !          2836: \def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
        !          2837: \begingroup\defname {#1}{Variable}%
        !          2838: \defvarargs {#2}\endgroup %
        !          2839: }
        !          2840: 
        !          2841: % @defopt == @defvr {User Option}
        !          2842: 
        !          2843: \def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader}
        !          2844: 
        !          2845: \def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
        !          2846: \begingroup\defname {#1}{User Option}%
        !          2847: \defvarargs {#2}\endgroup %
        !          2848: }
        !          2849: 
        !          2850: % @deftypevar int foobar
        !          2851: 
        !          2852: \def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader}
        !          2853: 
        !          2854: % #1 is the data type.  #2 is the name.
        !          2855: \def\deftypevarheader #1#2{%
        !          2856: \doind {vr}{\code{#2}}% Make entry in variables index
        !          2857: \begingroup\defname {\code{#1} #2}{Variable}%
        !          2858: \interlinepenalty=10000
        !          2859: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
        !          2860: \endgroup}
        !          2861: 
        !          2862: % @deftypevr {Global Flag} int enable
        !          2863: 
        !          2864: \def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader}
        !          2865: 
        !          2866: \def\deftypevrheader #1#2#3{\doind {vr}{\code{#3}}%
        !          2867: \begingroup\defname {\code{#2} #3}{#1}
        !          2868: \interlinepenalty=10000
        !          2869: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
        !          2870: \endgroup}
        !          2871: 
        !          2872: % This definition is run if you use @defvarx
        !          2873: % anywhere other than immediately after a @defvar or @defvarx.
        !          2874: 
        !          2875: \def\defvrx #1 {\errmessage{@defvrx in invalid context}}
        !          2876: \def\defvarx #1 {\errmessage{@defvarx in invalid context}}
        !          2877: \def\defoptx #1 {\errmessage{@defoptx in invalid context}}
        !          2878: \def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
        !          2879: \def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
        !          2880: 
        !          2881: % Now define @deftp
        !          2882: % Args are printed in bold, a slight difference from @defvar.
        !          2883: 
        !          2884: \def\deftpargs #1{\bf \defvarargs{#1}}
        !          2885: 
        !          2886: % @deftp Class window height width ...
        !          2887: 
        !          2888: \def\deftp{\defvrparsebody\Edeftp\deftpx\deftpheader}
        !          2889: 
        !          2890: \def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
        !          2891: \begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
        !          2892: 
        !          2893: % This definition is run if you use @deftpx, etc
        !          2894: % anywhere other than immediately after a @deftp, etc.
        !          2895: 
        !          2896: \def\deftpx #1 {\errmessage{@deftpx in invalid context}}
        !          2897: 
        !          2898: \message{cross reference,}
        !          2899: % Define cross-reference macros
        !          2900: \newwrite \auxfile
        !          2901: 
        !          2902: \newif\ifhavexrefs  % True if xref values are known.
        !          2903: \newif\ifwarnedxrefs  % True if we warned once that they aren't known.
        !          2904: 
        !          2905: % \setref{foo} defines a cross-reference point named foo.
        !          2906: 
        !          2907: \def\setref#1{%
        !          2908: %\dosetq{#1-title}{Ytitle}%
        !          2909: \dosetq{#1-pg}{Ypagenumber}%
        !          2910: \dosetq{#1-snt}{Ysectionnumberandtype}}
        !          2911: 
        !          2912: \def\unnumbsetref#1{%
        !          2913: %\dosetq{#1-title}{Ytitle}%
        !          2914: \dosetq{#1-pg}{Ypagenumber}%
        !          2915: \dosetq{#1-snt}{Ynothing}}
        !          2916: 
        !          2917: \def\appendixsetref#1{%
        !          2918: %\dosetq{#1-title}{Ytitle}%
        !          2919: \dosetq{#1-pg}{Ypagenumber}%
        !          2920: \dosetq{#1-snt}{Yappendixletterandtype}}
        !          2921: 
        !          2922: % \xref, \pxref, and \ref generate cross-references to specified points.
        !          2923: % For \xrefX, #1 is the node name, #2 the name of the Info
        !          2924: % cross-reference, #3 the printed node name, #4 the name of the Info
        !          2925: % file, #5 the name of the printed manual.  All but the node name can be
        !          2926: % omitted.
        !          2927: % 
        !          2928: \def\pxref#1{see \xrefX[#1,,,,,,,]}
        !          2929: \def\xref#1{See \xrefX[#1,,,,,,,]}
        !          2930: \def\ref#1{\xrefX[#1,,,,,,,]}
        !          2931: \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup%
        !          2932: \def\printedmanual{\ignorespaces #5}%
        !          2933: \def\printednodename{\ignorespaces #3}%
        !          2934: %
        !          2935: \setbox1=\hbox{\printedmanual}%
        !          2936: \setbox0=\hbox{\printednodename}%
        !          2937: \ifdim \wd0=0pt%
        !          2938: \def\printednodename{\ignorespaces #1}%
        !          2939: %%% Uncommment the following line to make the actual chapter or section title
        !          2940: %%% appear inside the square brackets.
        !          2941: %\def\printednodename{#1-title}%
        !          2942: \fi%
        !          2943: %
        !          2944: %
        !          2945: % If we use \unhbox0 and \unhbox1 to print the node names, TeX does
        !          2946: % not insert empty discretionaries after hyphens, which means that it
        !          2947: % will not find a line break at a hyphen in a node names.  Since some
        !          2948: % manuals are best written with fairly long node names, containing
        !          2949: % hyphens, this is a loss.  Therefore, we simply give the text of
        !          2950: % the node name again, so it is as if TeX is seeing it for the first
        !          2951: % time.
        !          2952: \ifdim \wd1>0pt
        !          2953: section ``\printednodename'' in \cite{\printedmanual}%
        !          2954: \else%
        !          2955: \turnoffactive%
        !          2956: \refx{#1-snt}{} [\printednodename], page\tie\refx{#1-pg}{}%
        !          2957: \fi
        !          2958: \endgroup}
        !          2959: 
        !          2960: % \dosetq is the interface for calls from other macros
        !          2961: 
        !          2962: % Use \turnoffactive so that punctuation chars such as underscore
        !          2963: % work in node names.
        !          2964: \def\dosetq #1#2{{\let\folio=0 \turnoffactive%
        !          2965: \edef\next{\write\auxfile{\internalsetq {#1}{#2}}}%
        !          2966: \next}}
        !          2967: 
        !          2968: % \internalsetq {foo}{page} expands into
        !          2969: % CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
        !          2970: % When the aux file is read, ' is the escape character
        !          2971: 
        !          2972: \def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
        !          2973: 
        !          2974: % Things to be expanded by \internalsetq
        !          2975: 
        !          2976: \def\Ypagenumber{\folio}
        !          2977: 
        !          2978: \def\Ytitle{\thischapter}
        !          2979: 
        !          2980: \def\Ynothing{}
        !          2981: 
        !          2982: \def\Ysectionnumberandtype{%
        !          2983: \ifnum\secno=0 Chapter\xreftie\the\chapno %
        !          2984: \else \ifnum \subsecno=0 Section\xreftie\the\chapno.\the\secno %
        !          2985: \else \ifnum \subsubsecno=0 %
        !          2986: Section\xreftie\the\chapno.\the\secno.\the\subsecno %
        !          2987: \else %
        !          2988: Section\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno %
        !          2989: \fi \fi \fi }
        !          2990: 
        !          2991: \def\Yappendixletterandtype{%
        !          2992: \ifnum\secno=0 Appendix\xreftie'char\the\appendixno{}%
        !          2993: \else \ifnum \subsecno=0 Section\xreftie'char\the\appendixno.\the\secno %
        !          2994: \else \ifnum \subsubsecno=0 %
        !          2995: Section\xreftie'char\the\appendixno.\the\secno.\the\subsecno %
        !          2996: \else %
        !          2997: Section\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno %
        !          2998: \fi \fi \fi }
        !          2999: 
        !          3000: \gdef\xreftie{'tie}
        !          3001: 
        !          3002: % Use TeX 3.0's \inputlineno to get the line number, for better error
        !          3003: % messages, but if we're using an old version of TeX, don't do anything.
        !          3004: % 
        !          3005: \ifx\inputlineno\thisisundefined
        !          3006:   \let\linenumber = \empty % Non-3.0.
        !          3007: \else
        !          3008:   \def\linenumber{\the\inputlineno:\space}
        !          3009: \fi
        !          3010: 
        !          3011: % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
        !          3012: % If its value is nonempty, SUFFIX is output afterward.
        !          3013: 
        !          3014: \def\refx#1#2{%
        !          3015:   \expandafter\ifx\csname X#1\endcsname\relax
        !          3016:     % If not defined, say something at least.
        !          3017:     $\langle$un\-de\-fined$\rangle$%
        !          3018:     \ifhavexrefs
        !          3019:       \message{\linenumber Undefined cross reference `#1'.}%
        !          3020:     \else
        !          3021:       \ifwarnedxrefs\else
        !          3022:         \global\warnedxrefstrue
        !          3023:         \message{Cross reference values unknown; you must run TeX again.}%
        !          3024:       \fi
        !          3025:     \fi
        !          3026:   \else
        !          3027:     % It's defined, so just use it.
        !          3028:     \csname X#1\endcsname
        !          3029:   \fi
        !          3030:   #2% Output the suffix in any case.
        !          3031: }
        !          3032: 
        !          3033: % Read the last existing aux file, if any.  No error if none exists.
        !          3034: 
        !          3035: % This is the macro invoked by entries in the aux file.
        !          3036: \def\xrdef #1#2{
        !          3037: {\catcode`\'=\other\expandafter \gdef \csname X#1\endcsname {#2}}}
        !          3038: 
        !          3039: \def\readauxfile{%
        !          3040: \begingroup
        !          3041: \catcode `\^^@=\other
        !          3042: \catcode `\&=\other
        !          3043: \catcode `\=\other
        !          3044: \catcode `\^^C=\other
        !          3045: \catcode `\^^D=\other
        !          3046: \catcode `\^^E=\other
        !          3047: \catcode `\^^F=\other
        !          3048: \catcode `\^^G=\other
        !          3049: \catcode `\^^H=\other
        !          3050: \catcode `\=\other
        !          3051: \catcode `\^^L=\other
        !          3052: \catcode `\=\other
        !          3053: \catcode `\=\other
        !          3054: \catcode `\=\other
        !          3055: \catcode `\=\other
        !          3056: \catcode `\=\other
        !          3057: \catcode `\=\other
        !          3058: \catcode `\=\other
        !          3059: \catcode `\=\other
        !          3060: \catcode `\=\other
        !          3061: \catcode `\=\other
        !          3062: \catcode `\=\other
        !          3063: \catcode `\=\other
        !          3064: \catcode 26=\other
        !          3065: \catcode `\^^[=\other
        !          3066: \catcode `\^^\=\other
        !          3067: \catcode `\^^]=\other
        !          3068: \catcode `\^^^=\other
        !          3069: \catcode `\^^_=\other
        !          3070: \catcode `\@=\other
        !          3071: \catcode `\^=\other
        !          3072: \catcode `\~=\other
        !          3073: \catcode `\[=\other
        !          3074: \catcode `\]=\other
        !          3075: \catcode`\"=\other
        !          3076: \catcode`\_=\other
        !          3077: \catcode`\|=\other
        !          3078: \catcode`\<=\other
        !          3079: \catcode`\>=\other
        !          3080: \catcode `\$=\other
        !          3081: \catcode `\#=\other
        !          3082: \catcode `\&=\other
        !          3083: % the aux file uses ' as the escape.
        !          3084: % Turn off \ as an escape so we do not lose on
        !          3085: % entries which were dumped with control sequences in their names.
        !          3086: % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
        !          3087: % Reference to such entries still does not work the way one would wish,
        !          3088: % but at least they do not bomb out when the aux file is read in.
        !          3089: \catcode `\{=1 \catcode `\}=2
        !          3090: \catcode `\%=\other
        !          3091: \catcode `\'=0
        !          3092: \catcode `\\=\other
        !          3093: \openin 1 \jobname.aux
        !          3094: \ifeof 1 \else \closein 1 \input \jobname.aux \global\havexrefstrue
        !          3095: \fi
        !          3096: % Open the new aux file.  Tex will close it automatically at exit.
        !          3097: \openout \auxfile=\jobname.aux
        !          3098: \endgroup}
        !          3099: 
        !          3100: 
        !          3101: % Footnotes.
        !          3102: 
        !          3103: \newcount \footnoteno
        !          3104: 
        !          3105: % The trailing space in the following definition for supereject is
        !          3106: % vital for proper filling; pages come out unaligned when you do a
        !          3107: % pagealignmacro call if that space before the closing brace is
        !          3108: % removed.
        !          3109: \def\supereject{\par\penalty -20000\footnoteno =0 }
        !          3110: 
        !          3111: % @footnotestyle is meaningful for info output only..
        !          3112: \let\footnotestyle=\comment
        !          3113: 
        !          3114: \let\ptexfootnote=\footnote
        !          3115: 
        !          3116: {\catcode `\@=11
        !          3117: \long\gdef\footnote #1{\global\advance \footnoteno by \@ne
        !          3118: \unskip
        !          3119: \edef\thisfootno{$^{\the\footnoteno}$}%
        !          3120: \let\@sf\empty
        !          3121: \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
        !          3122: \thisfootno\@sf \footnotezzz{#1}}
        !          3123: % \parsearg\footnotezzz}
        !          3124: 
        !          3125: \long\gdef\footnotezzz #1{\insert\footins{
        !          3126: \interlinepenalty\interfootnotelinepenalty
        !          3127: \splittopskip\ht\strutbox % top baseline for broken footnotes
        !          3128: \splitmaxdepth\dp\strutbox \floatingpenalty\@MM
        !          3129: \leftskip\z@skip \rightskip\z@skip \spaceskip\z@skip \xspaceskip\z@skip
        !          3130: \footstrut\parindent=\defaultparindent\hang\textindent{\thisfootno}#1\strut}}
        !          3131: 
        !          3132: }%end \catcode `\@=11
        !          3133: 
        !          3134: % End of control word definitions.
        !          3135: 
        !          3136: \message{and turning on texinfo input format.}
        !          3137: 
        !          3138: \def\openindices{%
        !          3139:    \newindex{cp}%
        !          3140:    \newcodeindex{fn}%
        !          3141:    \newcodeindex{vr}%
        !          3142:    \newcodeindex{tp}%
        !          3143:    \newcodeindex{ky}%
        !          3144:    \newcodeindex{pg}%
        !          3145: }
        !          3146: 
        !          3147: % Set some numeric style parameters, for 8.5 x 11 format.
        !          3148: 
        !          3149: %\hsize = 6.5in
        !          3150: \newdimen\defaultparindent \defaultparindent = 15pt
        !          3151: \parindent = \defaultparindent
        !          3152: \parskip 18pt plus 1pt
        !          3153: \baselineskip 15pt
        !          3154: \advance\topskip by 1.2cm
        !          3155: 
        !          3156: % Prevent underfull vbox error messages.
        !          3157: \vbadness=10000
        !          3158: 
        !          3159: % Following George Bush, just get rid of widows and orphans.
        !          3160: \widowpenalty=10000
        !          3161: \clubpenalty=10000
        !          3162: 
        !          3163: % Use TeX 3.0's \emergencystretch to help line breaking, but if we're
        !          3164: % using an old version of TeX, don't do anything.  We want the amount of
        !          3165: % stretch added to depend on the line length, hence the dependence on
        !          3166: % \hsize.  This makes it come to about 9pt for the 8.5x11 format.
        !          3167: % 
        !          3168: \ifx\emergencystretch\thisisundefined \else
        !          3169:   \emergencystretch = \hsize
        !          3170:   \divide\emergencystretch by 45
        !          3171: \fi
        !          3172: 
        !          3173: % Use @smallbook to reset parameters for 7x9.5 format  (or else 7x9.25)
        !          3174: \def\smallbook{
        !          3175: \global\lispnarrowing = 0.3in
        !          3176: \global\baselineskip 12pt
        !          3177: \advance\topskip by -1cm
        !          3178: \global\parskip 3pt plus 1pt
        !          3179: \global\hsize = 5in
        !          3180: \global\doublecolumnhsize=2.4in \global\doublecolumnvsize=15.0in
        !          3181: \global\vsize=7.5in
        !          3182: \global\tolerance=700
        !          3183: \global\hfuzz=1pt
        !          3184: \global\contentsrightmargin=0pt
        !          3185: 
        !          3186: \global\pagewidth=\hsize
        !          3187: \global\pageheight=\vsize
        !          3188: 
        !          3189: \global\let\smalllisp=\smalllispx
        !          3190: \global\let\smallexample=\smalllispx
        !          3191: \global\def\Esmallexample{\Esmalllisp}
        !          3192: }
        !          3193: 
        !          3194: % Use @afourpaper to print on European A4 paper.
        !          3195: \def\afourpaper{
        !          3196: \global\tolerance=700
        !          3197: \global\hfuzz=1pt
        !          3198: \global\baselineskip=12pt
        !          3199: \global\parskip 15pt plus 1pt
        !          3200: 
        !          3201: \global\vsize= 53\baselineskip
        !          3202: \advance\vsize by \topskip
        !          3203: %\global\hsize=   5.85in     % A4 wide 10pt
        !          3204: \global\hsize=  6.5in
        !          3205: \global\outerhsize=\hsize
        !          3206: \global\advance\outerhsize by 0.5in
        !          3207: \global\outervsize=\vsize
        !          3208: \global\advance\outervsize by 0.6in
        !          3209: \global\doublecolumnhsize=\hsize
        !          3210: \global\divide\doublecolumnhsize by 2
        !          3211: \global\advance\doublecolumnhsize by -0.1in
        !          3212: \global\doublecolumnvsize=\vsize
        !          3213: \global\multiply\doublecolumnvsize by 2
        !          3214: \global\advance\doublecolumnvsize by 0.1in
        !          3215: 
        !          3216: \global\pagewidth=\hsize
        !          3217: \global\pageheight=\vsize
        !          3218: }
        !          3219: 
        !          3220: %% For a final copy, take out the rectangles
        !          3221: %% that mark overfull boxes (in case you have decided
        !          3222: %% that the text looks ok even though it passes the margin).
        !          3223: \def\finalout{\overfullrule=0pt}
        !          3224: 
        !          3225: % Define macros to output various characters with catcode for normal text.
        !          3226: \catcode`\"=\other
        !          3227: \catcode`\~=\other
        !          3228: \catcode`\^=\other
        !          3229: \catcode`\_=\other
        !          3230: \catcode`\|=\other
        !          3231: \catcode`\<=\other
        !          3232: \catcode`\>=\other
        !          3233: \catcode`\+=\other
        !          3234: \def\normaldoublequote{"}
        !          3235: \def\normaltilde{~}
        !          3236: \def\normalcaret{^}
        !          3237: \def\normalunderscore{_}
        !          3238: \def\normalverticalbar{|}
        !          3239: \def\normalless{<}
        !          3240: \def\normalgreater{>}
        !          3241: \def\normalplus{+}
        !          3242: 
        !          3243: % This macro is used to make a character print one way in ttfont
        !          3244: % where it can probably just be output, and another way in other fonts,
        !          3245: % where something hairier probably needs to be done.
        !          3246: %
        !          3247: % #1 is what to print if we are indeed using \tt; #2 is what to print
        !          3248: % otherwise.  Since all the Computer Modern typewriter fonts have zero
        !          3249: % interword stretch (and shrink), and it is reasonable to expect all
        !          3250: % typewriter fonts to have this, we can check that font parameter.
        !          3251: % 
        !          3252: \def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
        !          3253: 
        !          3254: % Turn off all special characters except @
        !          3255: % (and those which the user can use as if they were ordinary).
        !          3256: % Most of these we simply print from the \tt font, but for some, we can
        !          3257: % use math or other variants that look better in normal text.
        !          3258: 
        !          3259: \catcode`\"=\active
        !          3260: \def\activedoublequote{{\tt \char '042}}
        !          3261: \let"=\activedoublequote
        !          3262: \catcode`\~=\active
        !          3263: \def~{{\tt \char '176}}
        !          3264: \chardef\hat=`\^
        !          3265: \catcode`\^=\active
        !          3266: \def^{{\tt \hat}}
        !          3267: 
        !          3268: \catcode`\_=\active
        !          3269: \def_{\ifusingtt\normalunderscore\_}
        !          3270: % Subroutine for the previous macro.
        !          3271: \def\_{\lvvmode \kern.06em \vbox{\hrule width.3em height.1ex}}
        !          3272: 
        !          3273: % \lvvmode is equivalent in function to \leavevmode.
        !          3274: % Using \leavevmode runs into trouble when written out to
        !          3275: % an index file due to the expansion of \leavevmode into ``\unhbox
        !          3276: % \voidb@x'' ---which looks to TeX like ``\unhbox \voidb\x'' due to our
        !          3277: % magic tricks with @.
        !          3278: \def\lvvmode{\vbox to 0pt{}}
        !          3279: 
        !          3280: \catcode`\|=\active
        !          3281: \def|{{\tt \char '174}}
        !          3282: \chardef \less=`\<
        !          3283: \catcode`\<=\active
        !          3284: \def<{{\tt \less}}
        !          3285: \chardef \gtr=`\>
        !          3286: \catcode`\>=\active
        !          3287: \def>{{\tt \gtr}}
        !          3288: \catcode`\+=\active
        !          3289: \def+{{\tt \char 43}}
        !          3290: %\catcode 27=\active
        !          3291: %\def^^[{$\diamondsuit$}
        !          3292: 
        !          3293: % Used sometimes to turn off (effectively) the active characters
        !          3294: % even after parsing them.
        !          3295: \def\turnoffactive{\let"=\normaldoublequote
        !          3296: \let~=\normaltilde
        !          3297: \let^=\normalcaret
        !          3298: \let_=\normalunderscore
        !          3299: \let|=\normalverticalbar
        !          3300: \let<=\normalless
        !          3301: \let>=\normalgreater
        !          3302: \let+=\normalplus}
        !          3303: 
        !          3304: % Set up an active definition for =, but don't enable it most of the time.
        !          3305: {\catcode`\==\active
        !          3306: \global\def={{\tt \char 61}}}
        !          3307: 
        !          3308: \catcode`\@=0
        !          3309: 
        !          3310: % \rawbackslashxx output one backslash character in current font
        !          3311: \global\chardef\rawbackslashxx=`\\
        !          3312: %{\catcode`\\=\other
        !          3313: %@gdef@rawbackslashxx{\}}
        !          3314: 
        !          3315: % \rawbackslash redefines \ as input to do \rawbackslashxx.
        !          3316: {\catcode`\\=\active
        !          3317: @gdef@rawbackslash{@let\=@rawbackslashxx }}
        !          3318: 
        !          3319: % \normalbackslash outputs one backslash in fixed width font.
        !          3320: \def\normalbackslash{{\tt\rawbackslashxx}}
        !          3321: 
        !          3322: % Say @foo, not \foo, in error messages.
        !          3323: \escapechar=`\@
        !          3324: 
        !          3325: % \catcode 17=0   % Define control-q
        !          3326: \catcode`\\=\active
        !          3327: 
        !          3328: % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
        !          3329: % That is what \eatinput is for; after that, the `\' should revert to printing 
        !          3330: % a backslash.
        !          3331: %
        !          3332: @gdef@eatinput input texinfo{@fixbackslash}
        !          3333: @global@let\ = @eatinput
        !          3334: 
        !          3335: % On the other hand, perhaps the file did not have a `\input texinfo'. Then
        !          3336: % the first `\{ in the file would cause an error. This macro tries to fix 
        !          3337: % that, assuming it is called before the first `\' could plausibly occur.
        !          3338: % 
        !          3339: @gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi}
        !          3340: 
        !          3341: %% These look ok in all fonts, so just make them not special.  The @rm below
        !          3342: %% makes sure that the current font starts out as the newly loaded cmr10
        !          3343: @catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
        !          3344: 
        !          3345: @textfonts
        !          3346: @rm
        !          3347: 
        !          3348: @c Local variables:
        !          3349: @c page-delimiter: "^\\\\message"
        !          3350: @c End:

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