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Annotation of GNUtools/emacs/man/texinfo.tex, revision 1.1

1.1     ! root        1: %% TeX macros to handle texinfo files
        !             2: 
        !             3: %   Copyright (C) 1985, 1986, 1988, 1990 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 1, 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{2.29}
        !            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: \hyphenation{ap-pen-dix}
        !            54: \hyphenation{mini-buf-fer mini-buf-fers}
        !            55: \hyphenation{eshell}
        !            56: 
        !            57: % Margin to add to right of even pages, to left of odd pages.
        !            58: \newdimen \bindingoffset  \bindingoffset=0pt
        !            59: \newdimen \normaloffset   \normaloffset=\hoffset
        !            60: \newdimen\pagewidth \newdimen\pageheight
        !            61: \pagewidth=\hsize \pageheight=\vsize
        !            62: 
        !            63: %---------------------Begin change-----------------------
        !            64: %
        !            65: % Dimensions to add cropmarks at corners Added by P. A. MacKay, 12 Nov. 1986
        !            66: %
        !            67: \newdimen\cornerlong \newdimen\cornerthick
        !            68: \newdimen \topandbottommargin
        !            69: \newdimen \outerhsize \newdimen \outervsize
        !            70: \cornerlong=1pc\cornerthick=.3pt       % These set size of cropmarks
        !            71: \outerhsize=7in
        !            72: \outervsize=9.5in
        !            73: \topandbottommargin=.75in
        !            74: %
        !            75: %---------------------End change-----------------------
        !            76: 
        !            77: % \onepageout takes a vbox as an argument.  Note that \pagecontents
        !            78: % does insertions itself, but you have to call it yourself.
        !            79: \chardef\PAGE=255  \output={\onepageout{\pagecontents\PAGE}}
        !            80: \def\onepageout#1{\hoffset=\normaloffset
        !            81: \ifodd\pageno  \advance\hoffset by \bindingoffset
        !            82: \else \advance\hoffset by -\bindingoffset\fi
        !            83: {\escapechar=`\\\relax % makes sure backslash is used in output files.
        !            84: \shipout\vbox{{\let\hsize=\pagewidth \makeheadline} \pagebody{#1}%
        !            85: {\let\hsize=\pagewidth \makefootline}}}%
        !            86: \advancepageno \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
        !            87: 
        !            88: 
        !            89: % Here is a modification of the main output routine for Near East Publications
        !            90: % This provides right-angle cropmarks at all four corners.
        !            91: % The contents of the page are centerlined into the cropmarks,
        !            92: % and any desired binding offset is added as an \hskip on either
        !            93: % site of the centerlined box.  (P. A. MacKay, 12 November, 1986)
        !            94: %
        !            95: \def\croppageout#1{\hoffset=0pt % make sure this doesn't mess things up
        !            96:                 \shipout
        !            97:                 \vbox to \outervsize{\hsize=\outerhsize
        !            98:                  \vbox{\line{\ewtop\hfill\ewtop}}
        !            99:                  \nointerlineskip
        !           100:                  \line{\vbox{\moveleft\cornerthick\nstop}
        !           101:                        \hfill
        !           102:                        \vbox{\moveright\cornerthick\nstop}}
        !           103:                  \vskip \topandbottommargin
        !           104:                  \centerline{\ifodd\pageno\hskip\bindingoffset\fi
        !           105:                        \vbox{
        !           106:                        {\let\hsize=\pagewidth \makeheadline}
        !           107:                        \pagebody{#1}
        !           108:                        {\let\hsize=\pagewidth \makefootline}}
        !           109:                        \ifodd\pageno\else\hskip\bindingoffset\fi}
        !           110:                 \vskip \topandbottommargin plus1fill minus1fill
        !           111:                  \boxmaxdepth\cornerthick
        !           112:                  \line{\vbox{\moveleft\cornerthick\nsbot}
        !           113:                        \hfill
        !           114:                        \vbox{\moveright\cornerthick\nsbot}}
        !           115:                  \nointerlineskip
        !           116:                  \vbox{\line{\ewbot\hfill\ewbot}}
        !           117:        }
        !           118:   \advancepageno 
        !           119:   \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
        !           120: %
        !           121: % Do @cropmarks to get crop marks
        !           122: \def\cropmarks{\let\onepageout=\croppageout }
        !           123: 
        !           124: \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
        !           125: {\catcode`\@ =11
        !           126: \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
        !           127: \dimen@=\dp#1 \unvbox#1
        !           128: \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
        !           129: \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
        !           130: }
        !           131: 
        !           132: %
        !           133: % Here are the rules for the cropmarks.  Note that they are
        !           134: % offset so that the space between them is truly \outerhsize or \outervsize
        !           135: % (P. A. MacKay, 12 November, 1986)
        !           136: %
        !           137: \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
        !           138: \def\nstop{\vbox
        !           139:   {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
        !           140: \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
        !           141: \def\nsbot{\vbox
        !           142:   {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
        !           143: 
        !           144: % Parse an argument, then pass it to #1.
        !           145: % The argument can be delimited with [...] or with "..." or braces
        !           146: % or it can be a whole line.
        !           147: % #1 should be a macro which expects
        !           148: % an ordinary undelimited TeX argument.
        !           149: 
        !           150: \def\parsearg #1{\let\next=#1\begingroup\obeylines\futurelet\temp\parseargx}
        !           151: 
        !           152: \def\parseargx{%
        !           153: \ifx \obeyedspace\temp \aftergroup\parseargdiscardspace \else%
        !           154: \aftergroup \parseargline %
        !           155: \fi \endgroup}
        !           156: 
        !           157: {\obeyspaces %
        !           158: \gdef\parseargdiscardspace {\begingroup\obeylines\futurelet\temp\parseargx}}
        !           159: 
        !           160: \gdef\obeyedspace{\ }
        !           161: 
        !           162: \def\parseargline{\begingroup \obeylines \parsearglinex}
        !           163: {\obeylines %
        !           164: \gdef\parsearglinex #1^^M{\endgroup \next {#1}}}
        !           165: 
        !           166: \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
        !           167: 
        !           168: %% These are used to keep @begin/@end levels from running away
        !           169: %% Call \inENV within environments (after a \begingroup)
        !           170: \newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
        !           171: \def\ENVcheck{%
        !           172: \ifENV\errmessage{Still within an environment.  Type Return to continue.}
        !           173: \endgroup\fi} % This is not perfect, but it should reduce lossage
        !           174: 
        !           175: % @begin foo  is the same as @foo, for now.
        !           176: \newhelp\EMsimple{Type <Return> to continue}
        !           177: 
        !           178: \outer\def\begin{\parsearg\beginxxx}
        !           179: 
        !           180: \def\beginxxx #1{%
        !           181: \expandafter\ifx\csname #1\endcsname\relax
        !           182: {\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
        !           183: \csname #1\endcsname\fi}
        !           184: 
        !           185: %% @end foo executes the definition of \Efoo.
        !           186: %% foo can be delimited by doublequotes or brackets.
        !           187: 
        !           188: \def\end{\parsearg\endxxx}
        !           189: 
        !           190: \def\endxxx #1{%
        !           191: \expandafter\ifx\csname E#1\endcsname\relax
        !           192: \expandafter\ifx\csname #1\endcsname\relax
        !           193: \errmessage{Undefined command @end #1}\else
        !           194: \errorE{#1}\fi\fi
        !           195: \csname E#1\endcsname}
        !           196: \def\errorE#1{
        !           197: {\errhelp=\EMsimple \errmessage{@end #1 not within #1 environment}}}
        !           198: 
        !           199: % Single-spacing is done by various environments.
        !           200: 
        !           201: \newskip\singlespaceskip \singlespaceskip = \baselineskip
        !           202: \def\singlespace{%
        !           203: {\advance \baselineskip by -\singlespaceskip
        !           204: \kern \baselineskip}%
        !           205: \baselineskip=\singlespaceskip
        !           206: }
        !           207: 
        !           208: %% Simple single-character @ commands
        !           209: 
        !           210: % @@ prints an @
        !           211: % Kludge this until the fonts are right (grr).
        !           212: \def\@{{\tt \char '100}}
        !           213: 
        !           214: % Define @` and @' to be the same as ` and '
        !           215: % but suppressing ligatures.
        !           216: \def\`{{`}}
        !           217: \def\'{{'}}
        !           218: 
        !           219: % Used to generate quoted braces.
        !           220: 
        !           221: \def\mylbrace {{\tt \char '173}}
        !           222: \def\myrbrace {{\tt \char '175}}
        !           223: \let\{=\mylbrace
        !           224: \let\}=\myrbrace
        !           225: 
        !           226: % @: forces normal size whitespace following.
        !           227: \def\:{\spacefactor=1000 }
        !           228: 
        !           229: % @* forces a line break.
        !           230: \def\*{\hfil\break\hbox{}\ignorespaces}
        !           231: 
        !           232: % @. is an end-of-sentence period.
        !           233: \def\.{.\spacefactor=3000 }
        !           234: 
        !           235: % @w prevents a word break
        !           236: \def\w #1{\hbox{#1}}
        !           237: 
        !           238: % @group ... @end group  forces ... to be all on one page.
        !           239: 
        !           240: \def\group{\begingroup% \inENV ???
        !           241: \def \Egroup{\egroup\endgroup}
        !           242: \vbox\bgroup}
        !           243: 
        !           244: % @need space-in-mils
        !           245: % forces a page break if there is not space-in-mils remaining.
        !           246: 
        !           247: \newdimen\mil  \mil=0.001in
        !           248: 
        !           249: \def\need{\parsearg\needx}
        !           250: 
        !           251: \def\needx #1{\par %
        !           252: \begingroup %
        !           253: \dimen0=\pagetotal %
        !           254: \advance \dimen0 by #1\mil %
        !           255: \ifdim \dimen0>\pagegoal \vfill\eject \fi %
        !           256: \endgroup}
        !           257: 
        !           258: 
        !           259: % @br   forces paragraph break
        !           260: 
        !           261: \let\br = \par
        !           262: 
        !           263: % @dots{}  output some dots
        !           264: 
        !           265: \def\dots{$\ldots$}
        !           266: 
        !           267: % @page    forces the start of a new page
        !           268: 
        !           269: \def\page{\par\vfill\supereject}
        !           270: 
        !           271: % @exdent text....
        !           272: % outputs text on separate line in roman font, starting at standard page margin
        !           273: 
        !           274: \def\exdent{\errmessage{@exdent in filled text}}
        !           275:   % @lisp, etc, define \exdent locally from \internalexdent
        !           276: 
        !           277: {\obeyspaces
        !           278: \gdef\internalexdent{\parsearg\exdentzzz}}
        !           279: 
        !           280: \def\exdentzzz #1{{\advance \leftskip by -\lispnarrowing
        !           281: \advance \hsize by -\leftskip
        !           282: \advance \hsize by -\rightskip
        !           283: \leftline{{\rm#1}}}}
        !           284: 
        !           285: % @include file    insert text of that file as input.
        !           286: 
        !           287: \def\include{\parsearg\includezzz}
        !           288: \def\includezzz #1{{\def\thisfile{#1}\input #1
        !           289: }}
        !           290: 
        !           291: \def\thisfile{}
        !           292: 
        !           293: % @center line   outputs that line, centered
        !           294: 
        !           295: \def\center{\parsearg\centerzzz}
        !           296: \def\centerzzz #1{{\advance\hsize by -\leftskip
        !           297: \advance\hsize by -\rightskip
        !           298: \centerline{#1}}}
        !           299: 
        !           300: % @sp n   outputs n lines of vertical space
        !           301: 
        !           302: \def\sp{\parsearg\spxxx}
        !           303: \def\spxxx #1{\par \vskip #1\baselineskip}
        !           304: 
        !           305: % @comment ...line which is ignored...
        !           306: % @c is the same as @comment
        !           307: % @ignore ... @end ignore  is another way to write a comment
        !           308: 
        !           309: \def\comment{\catcode 64=\other \catcode 123=\other \catcode 125=\other%
        !           310: \parsearg \commentxxx}
        !           311: 
        !           312: \def\commentxxx #1{\catcode 64=0 \catcode 123=1 \catcode 125=2 }
        !           313: 
        !           314: \let\c=\comment
        !           315: 
        !           316: % Prevent errors for section commands.
        !           317: % Used in @ignore and in failing conditionals.
        !           318: \def\ignoresections{%
        !           319: \let\chapter=\relax
        !           320: \let\unnumbered=\relax
        !           321: \let\unnumberedsec=\relax
        !           322: \let\unnumberedsection=\relax
        !           323: \let\unnumberedsubsec=\relax
        !           324: \let\unnumberedsubsection=\relax
        !           325: \let\unnumberedsubsubsec=\relax
        !           326: \let\unnumberedsubsubsection=\relax
        !           327: \let\section=\relax
        !           328: \let\subsec=\relax
        !           329: \let\subsubsec=\relax
        !           330: \let\subsection=\relax
        !           331: \let\subsubsection=\relax
        !           332: \let\appendix=\relax
        !           333: \let\appendixsec=\relax
        !           334: \let\appendixsection=\relax
        !           335: \let\appendixsubsec=\relax
        !           336: \let\appendixsubsection=\relax
        !           337: \let\appendixsubsubsec=\relax
        !           338: \let\appendixsubsubsection=\relax
        !           339: }
        !           340: 
        !           341: \def\ignore{\begingroup\ignoresections\ignorexxx}
        !           342: \long\def\ignorexxx #1\end ignore{\endgroup\ignorespaces}
        !           343: 
        !           344: \def\direntry{\begingroup\direntryxxx}
        !           345: \long\def\direntryxxx #1\end direntry{\endgroup\ignorespaces}
        !           346: 
        !           347: % Conditionals to test whether a flag is set.
        !           348: 
        !           349: \outer\def\ifset{\begingroup\ignoresections\parsearg\ifsetxxx}
        !           350: 
        !           351: \def\ifsetxxx #1{\endgroup
        !           352: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\ifsetfail
        !           353: \else \let\temp=\relax \fi
        !           354: \temp}
        !           355: \def\Eifset{}
        !           356: \def\ifsetfail{\begingroup\ignoresections\ifsetfailxxx}
        !           357: \long\def\ifsetfailxxx #1\end ifset{\endgroup\ignorespaces}
        !           358: 
        !           359: \outer\def\ifclear{\begingroup\ignoresections\parsearg\ifclearxxx}
        !           360: 
        !           361: \def\ifclearxxx #1{\endgroup
        !           362: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\relax
        !           363: \else \let\temp=\ifclearfail \fi
        !           364: \temp}
        !           365: \def\Eifclear{}
        !           366: \def\ifclearfail{\begingroup\ignoresections\ifclearfailxxx}
        !           367: \long\def\ifclearfailxxx #1\end ifclear{\endgroup\ignorespaces}
        !           368: 
        !           369: % Some texinfo constructs that are trivial in tex
        !           370: 
        !           371: \def\iftex{}
        !           372: \def\Eiftex{}
        !           373: \def\ifinfo{\begingroup\ignoresections\ifinfoxxx}
        !           374: \long\def\ifinfoxxx #1\end ifinfo{\endgroup\ignorespaces}
        !           375: 
        !           376: \long\def\menu #1\end menu{}
        !           377: \def\asis#1{#1}
        !           378: 
        !           379: % @math means output in math mode.
        !           380: % We don't use $'s directly in the definition of \math because control
        !           381: % sequences like \math are expanded when the toc file is written.  Then,
        !           382: % we read the toc file back, the $'s will be normal characters (as they
        !           383: % should be, according to the definition of Texinfo).  So we must use a
        !           384: % control sequence to switch into and out of math mode.
        !           385: % 
        !           386: % This isn't quite enough for @math to work properly in indices, but it
        !           387: % seems unlikely it will ever be needed there.
        !           388: % 
        !           389: \let\implicitmath = $
        !           390: \def\math#1{\implicitmath #1\implicitmath}
        !           391: 
        !           392: \def\node{\ENVcheck\parsearg\nodezzz}
        !           393: \def\nodezzz#1{\nodexxx [#1,]}
        !           394: \def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
        !           395: \let\lastnode=\relax
        !           396: 
        !           397: \def\donoderef{\ifx\lastnode\relax\else
        !           398: \expandafter\expandafter\expandafter\setref{\lastnode}\fi
        !           399: \let\lastnode=\relax}
        !           400: 
        !           401: \def\unnumbnoderef{\ifx\lastnode\relax\else
        !           402: \expandafter\expandafter\expandafter\unnumbsetref{\lastnode}\fi
        !           403: \let\lastnode=\relax}
        !           404: 
        !           405: \def\appendixnoderef{\ifx\lastnode\relax\else
        !           406: \expandafter\expandafter\expandafter\appendixsetref{\lastnode}\fi
        !           407: \let\lastnode=\relax}
        !           408: 
        !           409: \let\refill=\relax
        !           410:   
        !           411: % @setfilename is done at the beginning of every texinfo file.
        !           412: % So open here the files we need to have open while reading the input.
        !           413: % This makes it possible to make a .fmt file for texinfo.
        !           414: \def\setfilename{%
        !           415:    \readauxfile
        !           416:    \opencontents
        !           417:    \openindices
        !           418:    \fixbackslash  % Turn off hack to swallow `\input texinfo'.
        !           419:    \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
        !           420:    \comment % Ignore the actual filename.
        !           421: }
        !           422: 
        !           423: \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
        !           424: 
        !           425: \def\inforef #1{\inforefzzz #1,,,,**}
        !           426: \def\inforefzzz #1,#2,#3,#4**{See Info file \file{\losespace#3{}}, node `\losespace#1{}'}
        !           427: \def\losespace #1{#1}
        !           428: 
        !           429: \message{fonts,}
        !           430: 
        !           431: % Font-change commands.
        !           432: 
        !           433: %% Try out Computer Modern fonts at \magstephalf
        !           434: \font\tenrm=cmr10 scaled \magstephalf
        !           435: \font\tentt=cmtt10 scaled \magstephalf
        !           436: % Instead of cmb10, you many want to use cmbx10.
        !           437: % cmbx10 is a prettier font on its own, but cmb10
        !           438: % looks better when embedded in a line with cmr10.
        !           439: \font\tenbf=cmb10 scaled \magstephalf 
        !           440: \font\tenit=cmti10 scaled \magstephalf
        !           441: \font\tensl=cmsl10 scaled \magstephalf
        !           442: \font\tensf=cmss10 scaled \magstephalf
        !           443: \def\li{\sf}
        !           444: \font\tensc=cmcsc10 scaled \magstephalf
        !           445: 
        !           446: % Fonts for @defun, etc.
        !           447: \font\defbf=cmbx10 scaled \magstep1 %was 1314
        !           448: \font\deftt=cmtt10 scaled \magstep1
        !           449: \def\df{\let\tt=\deftt \defbf}
        !           450: 
        !           451: % Font for title
        !           452: % There seems to have been a confusion: two definitions of this font.
        !           453: % It is not clear why, or which one is better.
        !           454: \font\titlerm = cmbx12 scaled \magstep3
        !           455: 
        !           456: % Fonts for indices and small examples.
        !           457: % We actually use the slanted font rather than the italic, 
        !           458: % because texinfo normally uses the slanted fonts for that.
        !           459: \font\ninett=cmtt9
        !           460: \font\indit=cmsl9 \font\indrm=cmr9
        !           461: \let\indtt=\ninett
        !           462: \def\indbf{\indrm} \def\indsl{\indit}
        !           463: \def\indexfonts{\let\it=\indit \let\sl=\indsl \let\bf=\indbf \let\rm=\indrm
        !           464: \let\tt=\indtt}
        !           465: 
        !           466: % Fonts for headings
        !           467: \font\chaprm=cmbx12 scaled \magstep2
        !           468: \font\chapit=cmti12 scaled \magstep2
        !           469: \font\chapsl=cmsl12 scaled \magstep2
        !           470: \font\chaptt=cmtt12 scaled \magstep2
        !           471: \font\chapsf=cmss12 scaled \magstep2
        !           472: \let\chapbf=\chaprm
        !           473: 
        !           474: \font\secrm=cmbx12 scaled \magstep1
        !           475: \font\secit=cmti12 scaled \magstep1
        !           476: \font\secsl=cmsl12 scaled \magstep1
        !           477: \font\sectt=cmtt12 scaled \magstep1
        !           478: \font\secsf=cmss12 scaled \magstep1
        !           479: \font\secbf=cmbx12 scaled \magstep1
        !           480: 
        !           481: % \font\ssecrm=cmbx10 scaled \magstep1    % This size an fontlooked bad.
        !           482: % \font\ssecit=cmti10 scaled \magstep1    % The letters were too crowded.
        !           483: % \font\ssecsl=cmsl10 scaled \magstep1
        !           484: % \font\ssectt=cmtt10 scaled \magstep1
        !           485: % \font\ssecsf=cmss10 scaled \magstep1
        !           486: 
        !           487: %\font\ssecrm=cmb10 scaled 1315        % Note the use of cmb rather than cmbx.
        !           488: %\font\ssecit=cmti10 scaled 1315       % Also, the size is a little larger than
        !           489: %\font\ssecsl=cmsl10 scaled 1315       % being scaled magstep1.
        !           490: %\font\ssectt=cmtt10 scaled 1315
        !           491: %\font\ssecsf=cmss10 scaled 1315
        !           492: 
        !           493: %\let\ssecbf=\ssecrm
        !           494: 
        !           495: \font\ssecrm=cmbx12 scaled \magstephalf
        !           496: \font\ssecit=cmti12 scaled \magstephalf
        !           497: \font\ssecsl=cmsl12 scaled \magstephalf
        !           498: \font\ssectt=cmtt12 scaled \magstephalf
        !           499: \font\ssecsf=cmss12 scaled \magstephalf
        !           500: \font\ssecbf=cmbx12 scaled \magstephalf
        !           501: 
        !           502: 
        !           503: \def\textfonts{\let\rm=\tenrm\let\it=\tenit\let\sl=\tensl\let\bf=\tenbf%
        !           504: \let\smallcaps=\tensc\let\sf=\tensf}
        !           505: \def\chapfonts{\let\rm=\chaprm\let\it=\chapit\let\sl=\chapsl\let\bf=\chapbf\let\tt=\chaptt\let\sf=\chapsf}
        !           506: \def\secfonts{\let\rm=\secrm\let\it=\secit\let\sl=\secsl\let\bf=\secbf\let\tt=\sectt\let\sf=\secsf}
        !           507: \def\subsecfonts{\let\rm=\ssecrm\let\it=\ssecit\let\sl=\ssecsl\let\bf=\ssecbf\let\tt=\ssectt\let\sf=\ssecsf}
        !           508: % Count depth in font-changes, for error checks
        !           509: \newcount\fontdepth \fontdepth=0
        !           510: 
        !           511: % Font for table of contents.
        !           512: \font\truesecrm=cmr12
        !           513: 
        !           514: %% Add scribe-like font environments, plus @l for inline lisp (usually sans
        !           515: %% serif) and @ii for TeX italic
        !           516: 
        !           517: % \smartitalic{ARG} outputs arg in italics, followed by an italic correction
        !           518: % unless the following character is such as not to need one.
        !           519: \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
        !           520: \def\smartitalic#1{{\sl #1}\futurelet\next\smartitalicx}
        !           521: 
        !           522: \let\i=\smartitalic
        !           523: \let\var=\smartitalic
        !           524: \let\dfn=\smartitalic
        !           525: \let\emph=\smartitalic
        !           526: \let\cite=\smartitalic
        !           527: 
        !           528: \def\b#1{{\bf #1}}
        !           529: \let\strong=\b
        !           530: 
        !           531: \def\t#1{{\tt \rawbackslash \frenchspacing #1}\null}
        !           532: \let\ttfont = \t
        !           533: %\def\samp #1{`{\tt \rawbackslash \frenchspacing #1}'\null}
        !           534: \def\samp #1{`\tclose{#1}'\null}
        !           535: \def\key #1{{\tt \uppercase{#1}}\null}
        !           536: \def\ctrl #1{{\tt \rawbackslash \hat}#1}
        !           537: 
        !           538: \let\file=\samp
        !           539: 
        !           540: % @code is a modification of @t,
        !           541: % which makes spaces the same size as normal in the surrounding text.
        !           542: \newdimen\tclosesave
        !           543: \newdimen\tcloserm
        !           544: \def\tclose#1{{\rm \tcloserm=\fontdimen2\font \tt \tclosesave=\fontdimen2\font
        !           545: \fontdimen2\font=\tcloserm
        !           546: \def\ {{\fontdimen2\font=\tclosesave{} }}%
        !           547:  \rawbackslash \frenchspacing #1\fontdimen2\font=\tclosesave}\null}
        !           548: \let\code=\tclose
        !           549: %\let\exp=\tclose  %Was temporary
        !           550: 
        !           551: % @kbd is like @code, except that if the argument is just one @key command, 
        !           552: % then @kbd has no effect.
        !           553: 
        !           554: \def\xkey{\key}
        !           555: \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
        !           556: \ifx\one\xkey\ifx\threex\three \key{#2}%
        !           557: \else\tclose{\look}\fi
        !           558: \else\tclose{\look}\fi}
        !           559: 
        !           560: \def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
        !           561: 
        !           562: \def\l#1{{\li #1}\null}                % 
        !           563: 
        !           564: \def\r#1{{\rm #1}}             % roman font
        !           565: % Use of \lowercase was suggested.
        !           566: \def\sc#1{{\smallcaps#1}}      % smallcaps font
        !           567: \def\ii#1{{\it #1}}            % italic font
        !           568: 
        !           569: \message{page headings,}
        !           570: 
        !           571: \newskip\titlepagetopglue \titlepagetopglue = 1.5in
        !           572: \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
        !           573: 
        !           574: % First the title page.  Must do @settitle before @titlepage.
        !           575: \def\titlefont#1{{\titlerm #1}}
        !           576: 
        !           577: \newtoks\realeverypar
        !           578: \newif\ifseenauthor
        !           579: \newif\iffinishedtitlepage
        !           580: 
        !           581: \def\titlepage{\begingroup \parindent=0pt \textfonts
        !           582:    \let\subtitlerm=\tenrm
        !           583: % I deinstalled the following change because \cmr12 is undefined.
        !           584: % This change was not in the ChangeLog anyway.  --rms.
        !           585: %   \let\subtitlerm=\cmr12
        !           586:    \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
        !           587:    %
        !           588:    \font\authorrm = cmbx12 scaled \magstep1
        !           589:    \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
        !           590:    %
        !           591:    % Leave some space at the very top of the page.
        !           592:    \vglue\titlepagetopglue
        !           593:    %
        !           594:    % Now you can print the title using @title.
        !           595:    \def\title{\parsearg\titlezzz}%
        !           596:    \def\titlezzz##1{\leftline{\titlefont{##1}}
        !           597:                    % print a rule at the page bottom also.
        !           598:                    \finishedtitlepagefalse
        !           599:                    \vskip4pt \hrule height 4pt \vskip4pt}%
        !           600:    % No rule at page bottom unless we print one at the top with @title.
        !           601:    \finishedtitlepagetrue
        !           602:    %
        !           603:    % Now you can put text using @subtitle.
        !           604:    \def\subtitle{\parsearg\subtitlezzz}%
        !           605:    \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
        !           606:    %
        !           607:    % @author should come last, but may come many times.
        !           608:    \def\author{\parsearg\authorzzz}%
        !           609:    \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
        !           610:       {\authorfont \leftline{##1}}}%
        !           611:    %  
        !           612:    % Most title ``pages'' are actually two pages long, with space
        !           613:    % at the top of the second.  We don't want the ragged left on the second.
        !           614:    \let\oldpage = \page
        !           615:    \def\page{%
        !           616:       \iffinishedtitlepage\else
        !           617:         \finishtitlepage
        !           618:       \fi
        !           619:       \oldpage
        !           620:       \let\page = \oldpage
        !           621:       \hbox{}}%
        !           622: %   \def\page{\oldpage \hbox{}}
        !           623: }
        !           624: 
        !           625: \def\Etitlepage{%
        !           626:    \iffinishedtitlepage\else
        !           627:       \finishtitlepage
        !           628:    \fi
        !           629:    \endgroup\page\HEADINGSon
        !           630: }
        !           631: 
        !           632: \def\finishtitlepage{%
        !           633:    \vskip4pt \hrule height 2pt
        !           634:    \vskip\titlepagebottomglue
        !           635:    \finishedtitlepagetrue
        !           636: }
        !           637: 
        !           638: %%% Set up page headings and footings.
        !           639: 
        !           640: \let\thispage=\folio
        !           641: 
        !           642: \newtoks \evenheadline    % Token sequence for heading line of even pages
        !           643: \newtoks \oddheadline     % Token sequence for heading line of odd pages
        !           644: \newtoks \evenfootline    % Token sequence for footing line of even pages
        !           645: \newtoks \oddfootline     % Token sequence for footing line of odd pages
        !           646: 
        !           647: % Now make Tex use those variables
        !           648: \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline \else \the\evenheadline \fi}}
        !           649: \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline \else \the\evenfootline \fi}}
        !           650: 
        !           651: % Commands to set those variables.
        !           652: % For example, this is what  @headings on  does
        !           653: % @evenheading @thistitle|@thispage|@thischapter
        !           654: % @oddheading @thischapter|@thispage|@thistitle
        !           655: % @evenfooting @thisfile||
        !           656: % @oddfooting ||@thisfile
        !           657: 
        !           658: \def\evenheading{\parsearg\evenheadingxxx}
        !           659: \def\oddheading{\parsearg\oddheadingxxx}
        !           660: \def\everyheading{\parsearg\everyheadingxxx}
        !           661: 
        !           662: \def\evenfooting{\parsearg\evenfootingxxx}
        !           663: \def\oddfooting{\parsearg\oddfootingxxx}
        !           664: \def\everyfooting{\parsearg\everyfootingxxx}
        !           665: 
        !           666: {\catcode`\@=0 %
        !           667: 
        !           668: \gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
        !           669: \gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
        !           670: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           671: 
        !           672: \gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
        !           673: \gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
        !           674: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           675: 
        !           676: \gdef\everyheadingxxx #1{\everyheadingyyy #1@|@|@|@|\finish}
        !           677: \gdef\everyheadingyyy #1@|#2@|#3@|#4\finish{%
        !           678: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
        !           679: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           680: 
        !           681: \gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
        !           682: \gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
        !           683: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           684: 
        !           685: \gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
        !           686: \gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
        !           687: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           688: 
        !           689: \gdef\everyfootingxxx #1{\everyfootingyyy #1@|@|@|@|\finish}
        !           690: \gdef\everyfootingyyy #1@|#2@|#3@|#4\finish{%
        !           691: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
        !           692: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !           693: %
        !           694: }% unbind the catcode of @.
        !           695: 
        !           696: % @headings double     turns headings on for double-sided printing.
        !           697: % @headings single     turns headings on for single-sided printing.
        !           698: % @headings off                turns them off.
        !           699: % @headings on         same as @headings double, retained for compatibility.
        !           700: % By default, they are off.
        !           701: 
        !           702: \def\headings #1 {\csname HEADINGS#1\endcsname}
        !           703: 
        !           704: \def\HEADINGSoff{
        !           705: \global\evenheadline={\hfil} \global\evenfootline={\hfil}
        !           706: \global\oddheadline={\hfil} \global\oddfootline={\hfil}}
        !           707: \HEADINGSoff
        !           708: % When we turn headings on, set the page number to 1.
        !           709: % For double-sided printing, put current file name in lower left corner,
        !           710: % chapter name on inside top of right hand pages, document
        !           711: % title on inside top of left hand pages, and page numbers on outside top
        !           712: % edge of all pages.
        !           713: \def\HEADINGSdouble{
        !           714: %\pagealignmacro
        !           715: \global\pageno=1
        !           716: \global\evenfootline={\hfil}
        !           717: \global\oddfootline={\hfil}
        !           718: \global\evenheadline={\line{\folio\hfil\thistitle}}
        !           719: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !           720: }
        !           721: % For single-sided printing, chapter title goes across top left of page,
        !           722: % page number on top right.
        !           723: \def\HEADINGSsingle{
        !           724: %\pagealignmacro
        !           725: \global\pageno=1
        !           726: \global\evenfootline={\hfil}
        !           727: \global\oddfootline={\hfil}
        !           728: \global\evenheadline={\line{\thischapter\hfil\folio}}
        !           729: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !           730: }
        !           731: \def\HEADINGSon{\HEADINGSdouble}
        !           732: 
        !           733: % Subroutines used in generating headings
        !           734: % Produces Day Month Year style of output.
        !           735: \def\today{\number\day\space
        !           736: \ifcase\month\or
        !           737: January\or February\or March\or April\or May\or June\or
        !           738: July\or August\or September\or October\or November\or December\fi
        !           739: \space\number\year}
        !           740: 
        !           741: % Use this if you want the Month Day, Year style of output.
        !           742: %\def\today{\ifcase\month\or
        !           743: %January\or February\or March\or April\or May\or June\or
        !           744: %July\or August\or September\or October\or November\or December\fi
        !           745: %\space\number\day, \number\year}
        !           746: 
        !           747: % @settitle line...  specifies the title of the document, for headings
        !           748: % It generates no output of its own
        !           749: 
        !           750: \def\thistitle{No Title}
        !           751: \def\settitle{\parsearg\settitlezzz}
        !           752: \def\settitlezzz #1{\gdef\thistitle{#1}}
        !           753: 
        !           754: \message{tables,}
        !           755: 
        !           756: % @tabs -- simple alignment
        !           757: 
        !           758: % These don't work.  For one thing, \+ is defined as outer.
        !           759: % So these macros cannot even be defined.
        !           760: 
        !           761: %\def\tabs{\parsearg\tabszzz}
        !           762: %\def\tabszzz #1{\settabs\+#1\cr}
        !           763: %\def\tabline{\parsearg\tablinezzz}
        !           764: %\def\tablinezzz #1{\+#1\cr}
        !           765: %\def\&{&}
        !           766: 
        !           767: % Tables -- @table, @ftable, @item(x), @kitem(x), @xitem(x).
        !           768: 
        !           769: % default indentation of table text
        !           770: \newdimen\tableindent \tableindent=.8in
        !           771: % default indentation of @itemize and @enumerate text
        !           772: \newdimen\itemindent  \itemindent=.3in
        !           773: % margin between end of table item and start of table text.
        !           774: \newdimen\itemmargin  \itemmargin=.1in
        !           775: 
        !           776: % used internally for \itemindent minus \itemmargin
        !           777: \newdimen\itemmax
        !           778: 
        !           779: % Note @table and @ftable define @item, @itemx, etc., with these defs.
        !           780: % They also define \itemindex
        !           781: % to index the item name in whatever manner is desired (perhaps none).
        !           782: 
        !           783: \def\internalBitem{\smallbreak \parsearg\itemzzz}
        !           784: \def\internalBitemx{\par \parsearg\itemzzz}
        !           785: 
        !           786: \def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
        !           787: \def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \par \parsearg\xitemzzz}
        !           788: 
        !           789: \def\internalBkitem{\smallbreak \parsearg\kitemzzz}
        !           790: \def\internalBkitemx{\par \parsearg\kitemzzz}
        !           791: 
        !           792: \def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}\itemzzz {#1}}
        !           793: 
        !           794: \def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}\itemzzz {#1}}
        !           795: 
        !           796: \def\itemzzz #1{\begingroup %
        !           797: \advance \hsize by -\rightskip %
        !           798: \advance \hsize by -\leftskip %
        !           799: \setbox0=\hbox{\itemfont{#1}}%
        !           800: \itemindex{#1}%
        !           801: \parskip=0in %
        !           802: \noindent %
        !           803: \ifdim \wd0>\itemmax %
        !           804: \vadjust{\penalty 10000}%
        !           805: \hbox to \hsize{\hskip -\tableindent\box0\hss}\ %
        !           806: \else %
        !           807: \hbox to 0pt{\hskip -\tableindent\box0\hss}%
        !           808: \fi %
        !           809: \endgroup %
        !           810: }
        !           811: 
        !           812: \def\item{\errmessage{@item while not in a table}}
        !           813: \def\itemx{\errmessage{@itemx while not in a table}}
        !           814: \def\kitem{\errmessage{@kitem while not in a table}}
        !           815: \def\kitemx{\errmessage{@kitemx while not in a table}}
        !           816: \def\xitem{\errmessage{@xitem while not in a table}}
        !           817: \def\xitemx{\errmessage{@xitemx while not in a table}}
        !           818: 
        !           819: %% Contains a kludge to get @end[description] to work
        !           820: \def\description{\tablez{\dontindex}{1}{}{}{}{}}
        !           821: 
        !           822: \def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
        !           823: {\obeylines\obeyspaces%
        !           824: \gdef\tablex #1^^M{%
        !           825: \tabley\dontindex#1        \endtabley}}
        !           826: 
        !           827: \def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
        !           828: {\obeylines\obeyspaces%
        !           829: \gdef\ftablex #1^^M{%
        !           830: \tabley\fnitemindex#1        \endtabley}}
        !           831: 
        !           832: \def\dontindex #1{}
        !           833: \def\fnitemindex #1{\doind {fn}{\code{#1}}}%
        !           834: 
        !           835: {\obeyspaces %
        !           836: \gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
        !           837: \tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
        !           838: 
        !           839: \def\tablez #1#2#3#4#5#6{%
        !           840: \aboveenvbreak %
        !           841: \begingroup %
        !           842: \def\Edescription{\Etable}% Neccessary kludge.
        !           843: \let\itemindex=#1%
        !           844: \ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
        !           845: \ifnum 0#4>0 \tableindent=#4\mil \fi %
        !           846: \ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
        !           847: \def\itemfont{#2}%
        !           848: \itemmax=\tableindent %
        !           849: \advance \itemmax by -\itemmargin %
        !           850: \advance \leftskip by \tableindent %
        !           851: \parindent = 0pt
        !           852: \parskip = \smallskipamount
        !           853: \ifdim \parskip=0pt \parskip=2pt \fi%
        !           854: \def\Etable{\endgraf\endgroup\afterenvbreak}%
        !           855: \let\item = \internalBitem %
        !           856: \let\itemx = \internalBitemx %
        !           857: \let\kitem = \internalBkitem %
        !           858: \let\kitemx = \internalBkitemx %
        !           859: \let\xitem = \internalBxitem %
        !           860: \let\xitemx = \internalBxitemx %
        !           861: }
        !           862: 
        !           863: % This is the counter used by @enumerate, which is really @itemize
        !           864: 
        !           865: \newcount \itemno
        !           866: 
        !           867: \def\itemize{\parsearg\itemizezzz}
        !           868: 
        !           869: \def\itemizezzz #1{\itemizey {#1}{\Eitemize}}
        !           870: 
        !           871: \def\itemizey #1#2{%
        !           872: \aboveenvbreak %
        !           873: \begingroup %
        !           874: \itemno = 0 %
        !           875: \itemmax=\itemindent %
        !           876: \advance \itemmax by -\itemmargin %
        !           877: \advance \leftskip by \itemindent %
        !           878: \parindent = 0pt
        !           879: \parskip = \smallskipamount
        !           880: \ifdim \parskip=0pt \parskip=2pt \fi%
        !           881: \def#2{\endgraf\endgroup\afterenvbreak}%
        !           882: \def\itemcontents{#1}%
        !           883: \let\item=\itemizeitem}
        !           884: 
        !           885: \def\bullet{$\ptexbullet$}
        !           886: \def\minus{$-$}
        !           887: 
        !           888: % Set sfcode to normal for the chars that usually have another value.
        !           889: % These are `.?!:;,'
        !           890: \def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
        !           891:   \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
        !           892: 
        !           893: \def\enumerate{\itemizey{\the\itemno.}\Eenumerate\flushcr}
        !           894: 
        !           895: % Definition of @item while inside @itemize.
        !           896: 
        !           897: \def\itemizeitem{%
        !           898: \advance\itemno by 1
        !           899: {\let\par=\endgraf \smallbreak}%
        !           900: \ifhmode \errmessage{\in hmode at itemizeitem}\fi
        !           901: {\parskip=0in \hskip 0pt
        !           902: \hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
        !           903: \vadjust{\penalty 300}}%
        !           904: \flushcr}
        !           905: 
        !           906: \message{indexing,}
        !           907: % Index generation facilities
        !           908: 
        !           909: % Define \newwrite to be identical to plain tex's \newwrite
        !           910: % except not \outer, so it can be used within \newindex.
        !           911: {\catcode`\@=11
        !           912: \gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
        !           913: 
        !           914: % \newindex {foo} defines an index named foo.
        !           915: % It automatically defines \fooindex such that
        !           916: % \fooindex ...rest of line... puts an entry in the index foo.
        !           917: % It also defines \fooindfile to be the number of the output channel for
        !           918: % the file that        accumulates this index.  The file's extension is foo.
        !           919: % The name of an index should be no more than 2 characters long
        !           920: % for the sake of vms.
        !           921: 
        !           922: \def\newindex #1{
        !           923: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
        !           924: \openout \csname#1indfile\endcsname \jobname.#1        % Open the file
        !           925: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !           926: \noexpand\doindex {#1}}
        !           927: }
        !           928: 
        !           929: % @defindex foo  ==  \newindex{foo}
        !           930: 
        !           931: \def\defindex{\parsearg\newindex}
        !           932: 
        !           933: % Define @defcodeindex, like @defindex except put all entries in @code.
        !           934: 
        !           935: \def\newcodeindex #1{
        !           936: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
        !           937: \openout \csname#1indfile\endcsname \jobname.#1        % Open the file
        !           938: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !           939: \noexpand\docodeindex {#1}}
        !           940: }
        !           941: 
        !           942: \def\defcodeindex{\parsearg\newcodeindex}
        !           943: 
        !           944: % @synindex foo bar    makes index foo feed into index bar.
        !           945: % Do this instead of @defindex foo if you don't want it as a separate index.
        !           946: \def\synindex #1 #2 {%
        !           947: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
        !           948: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
        !           949: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !           950: \noexpand\doindex {#2}}%
        !           951: }
        !           952: 
        !           953: % @syncodeindex foo bar   similar, but put all entries made for index foo
        !           954: % inside @code.
        !           955: \def\syncodeindex #1 #2 {%
        !           956: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
        !           957: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
        !           958: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !           959: \noexpand\docodeindex {#2}}%
        !           960: }
        !           961: 
        !           962: % Define \doindex, the driver for all \fooindex macros.
        !           963: % Argument #1 is generated by the calling \fooindex macro,
        !           964: %  and it is "foo", the name of the index.
        !           965: 
        !           966: % \doindex just uses \parsearg; it calls \doind for the actual work.
        !           967: % This is because \doind is more useful to call from other macros.
        !           968: 
        !           969: % There is also \dosubind {index}{topic}{subtopic}
        !           970: % which makes an entry in a two-level index such as the operation index.
        !           971: 
        !           972: \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
        !           973: \def\singleindexer #1{\doind{\indexname}{#1}}
        !           974: 
        !           975: % like the previous two, but they put @code around the argument.
        !           976: \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
        !           977: \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
        !           978: 
        !           979: \def\indexdummies{%
        !           980: \def\_{{\realbackslash normalunderscore}}%
        !           981: \def\w{\realbackslash w }%
        !           982: \def\bf{\realbackslash bf }%
        !           983: \def\rm{\realbackslash rm }%
        !           984: \def\sl{\realbackslash sl }%
        !           985: \def\sf{\realbackslash sf}%
        !           986: \def\tt{\realbackslash tt}%
        !           987: \def\gtr{\realbackslash gtr}%
        !           988: \def\less{\realbackslash less}%
        !           989: \def\hat{\realbackslash hat}%
        !           990: \def\char{\realbackslash char}%
        !           991: \def\TeX{\realbackslash TeX}%
        !           992: \def\dots{\realbackslash dots }%
        !           993: \def\copyright{\realbackslash copyright }%
        !           994: \def\tclose##1{\realbackslash tclose {##1}}%
        !           995: \def\code##1{\realbackslash code {##1}}%
        !           996: \def\samp##1{\realbackslash samp {##1}}%
        !           997: \def\t##1{\realbackslash r {##1}}%
        !           998: \def\r##1{\realbackslash r {##1}}%
        !           999: \def\i##1{\realbackslash i {##1}}%
        !          1000: \def\b##1{\realbackslash b {##1}}%
        !          1001: \def\cite##1{\realbackslash cite {##1}}%
        !          1002: \def\key##1{\realbackslash key {##1}}%
        !          1003: \def\file##1{\realbackslash file {##1}}%
        !          1004: \def\var##1{\realbackslash var {##1}}%
        !          1005: \def\kbd##1{\realbackslash kbd {##1}}%
        !          1006: }
        !          1007: 
        !          1008: % \indexnofonts no-ops all font-change commands.
        !          1009: % This is used when outputting the strings to sort the index by.
        !          1010: \def\indexdummyfont#1{#1}
        !          1011: \def\indexdummytex{TeX}
        !          1012: \def\indexdummydots{...}
        !          1013: 
        !          1014: \def\indexnofonts{%
        !          1015: \let\w=\indexdummyfont
        !          1016: \let\t=\indexdummyfont
        !          1017: \let\r=\indexdummyfont
        !          1018: \let\i=\indexdummyfont
        !          1019: \let\b=\indexdummyfont
        !          1020: \let\emph=\indexdummyfont
        !          1021: \let\strong=\indexdummyfont
        !          1022: \let\cite=\indexdummyfont
        !          1023: \let\sc=\indexdummyfont
        !          1024: %Don't no-op \tt, since it isn't a user-level command
        !          1025: % and is used in the definitions of the actuve chars like <, >, |...
        !          1026: %\let\tt=\indexdummyfont
        !          1027: \let\tclose=\indexdummyfont
        !          1028: \let\code=\indexdummyfont
        !          1029: \let\file=\indexdummyfont
        !          1030: \let\samp=\indexdummyfont
        !          1031: \let\kbd=\indexdummyfont
        !          1032: \let\key=\indexdummyfont
        !          1033: \let\var=\indexdummyfont
        !          1034: \let\TeX=\indexdummytex
        !          1035: \let\dots=\indexdummydots
        !          1036: }
        !          1037: 
        !          1038: % To define \realbackslash, we must make \ not be an escape.
        !          1039: % We must first make another character (@) an escape
        !          1040: % so we do not become unable to do a definition.
        !          1041: 
        !          1042: {\catcode`\@=0 \catcode`\\=\other
        !          1043: @gdef@realbackslash{\}}
        !          1044: 
        !          1045: \let\indexbackslash=0  %overridden during \printindex.
        !          1046: 
        !          1047: \def\doind #1#2{%
        !          1048: {\indexdummies % Must do this here, since \bf, etc expand at this stage
        !          1049: \count10=\lastpenalty %
        !          1050: \escapechar=`\\%
        !          1051: {\let\folio=0% Expand all macros now EXCEPT \folio
        !          1052: \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
        !          1053: % so it will be output as is; and it will print as backslash in the indx.
        !          1054: %
        !          1055: % Now process the index-string once, with all font commands turned off,
        !          1056: % to get the string to sort the index by.
        !          1057: {\indexnofonts
        !          1058: \xdef\temp1{#2}%
        !          1059: }%
        !          1060: % Now produce the complete index entry.  We process the index-string again,
        !          1061: % this time with font commands expanded, to get what to print in the index.
        !          1062: \edef\temp{%
        !          1063: \write \csname#1indfile\endcsname{%
        !          1064: \realbackslash entry {\temp1}{\folio}{#2}}}%
        !          1065: \temp }%
        !          1066: \penalty\count10}}
        !          1067: 
        !          1068: \def\dosubind #1#2#3{%
        !          1069: {\indexdummies % Must do this here, since \bf, etc expand at this stage
        !          1070: \count10=\lastpenalty %
        !          1071: \escapechar=`\\%
        !          1072: {\let\folio=0%
        !          1073: \def\rawbackslashxx{\indexbackslash}%
        !          1074: %
        !          1075: % Now process the index-string once, with all font commands turned off,
        !          1076: % to get the string to sort the index by.
        !          1077: {\indexnofonts
        !          1078: \xdef\temp1{#2 #3}%
        !          1079: }%
        !          1080: % Now produce the complete index entry.  We process the index-string again,
        !          1081: % this time with font commands expanded, to get what to print in the index.
        !          1082: \edef\temp{%
        !          1083: \write \csname#1indfile\endcsname{%
        !          1084: \realbackslash entry {\temp1}{\folio}{#2}{#3}}}%
        !          1085: \temp }%
        !          1086: \penalty\count10}}
        !          1087: 
        !          1088: % The index entry written in the file actually looks like
        !          1089: %  \entry {sortstring}{page}{topic}
        !          1090: % or
        !          1091: %  \entry {sortstring}{page}{topic}{subtopic}
        !          1092: % The texindex program reads in these files and writes files
        !          1093: % containing these kinds of lines:
        !          1094: %  \initial {c}
        !          1095: %     before the first topic whose initial is c
        !          1096: %  \entry {topic}{pagelist}
        !          1097: %     for a topic that is used without subtopics
        !          1098: %  \primary {topic}
        !          1099: %     for the beginning of a topic that is used with subtopics
        !          1100: %  \secondary {subtopic}{pagelist}
        !          1101: %     for each subtopic.
        !          1102: 
        !          1103: % Define the user-accessible indexing commands 
        !          1104: % @findex, @vindex, @kindex, @cindex.
        !          1105: 
        !          1106: \def\findex {\fnindex}
        !          1107: \def\kindex {\kyindex}
        !          1108: \def\cindex {\cpindex}
        !          1109: \def\vindex {\vrindex}
        !          1110: \def\tindex {\tpindex}
        !          1111: \def\pindex {\pgindex}
        !          1112: 
        !          1113: \def\cindexsub {\begingroup\obeylines\cindexsub}
        !          1114: {\obeylines %
        !          1115: \gdef\cindexsub "#1" #2^^M{\endgroup %
        !          1116: \dosubind{cp}{#2}{#1}}}
        !          1117: 
        !          1118: % Define the macros used in formatting output of the sorted index material.
        !          1119: 
        !          1120: % This is what you call to cause a particular index to get printed.
        !          1121: % Write
        !          1122: % @unnumbered Function Index
        !          1123: % @printindex fn
        !          1124: 
        !          1125: \def\printindex{\parsearg\doprintindex}
        !          1126: 
        !          1127: \def\doprintindex#1{\tex %
        !          1128: \catcode`\%=\other\catcode`\&=\other\catcode`\#=\other
        !          1129: \catcode`\$=\other\catcode`\_=\other
        !          1130: \catcode`\~=\other
        !          1131: % The following don't help, since the chars were translated
        !          1132: % when the raw index was written, and their fonts were discarded
        !          1133: % due to \indexnofonts.
        !          1134: %\catcode`\"=\active
        !          1135: %\catcode`\^=\active
        !          1136: %\catcode`\_=\active
        !          1137: %\catcode`\|=\active
        !          1138: %\catcode`\<=\active
        !          1139: %\catcode`\>=\active
        !          1140: \def\indexbackslash{\rawbackslashxx}
        !          1141: \indexfonts\rm \tolerance=9500 \advance\baselineskip -1pt
        !          1142: \begindoublecolumns
        !          1143: \openin 1 \jobname.#1s
        !          1144: \ifeof 1 \else \closein 1 \input \jobname.#1s
        !          1145: \fi
        !          1146: \enddoublecolumns
        !          1147: \Etex}
        !          1148: 
        !          1149: % These macros are used by the sorted index file itself.
        !          1150: % Change them to control the appearance of the index.
        !          1151: 
        !          1152: % Same as \bigskipamount except no shrink.
        !          1153: % \balancecolumns gets confused if there is any shrink.
        !          1154: \newskip\initialskipamount \initialskipamount 12pt plus4pt
        !          1155: 
        !          1156: \outer\def\initial #1{%
        !          1157: {\let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
        !          1158: \ifdim\lastskip<\initialskipamount
        !          1159: \removelastskip \penalty-200 \vskip \initialskipamount\fi
        !          1160: \line{\secbf#1\hfill}\kern 2pt\penalty10000}}
        !          1161: 
        !          1162: \outer\def\entry #1#2{
        !          1163: {\parfillskip=0in \parskip=0in \parindent=0in
        !          1164: \hangindent=1in \hangafter=1%
        !          1165: \noindent\hbox{#1}\indexdotfill #2\par
        !          1166: }}
        !          1167: 
        !          1168: % Like \dotfill except takes at least 1 em.
        !          1169: \def\indexdotfill{\cleaders\hbox{$\mathsurround=0pt \mkern1.5mu . \mkern1.5mu$}\hskip 1em plus 1fill}
        !          1170: 
        !          1171: \def\primary #1{\line{#1\hfil}}
        !          1172: 
        !          1173: \newskip\secondaryindent \secondaryindent=0.5cm
        !          1174: 
        !          1175: \def\secondary #1#2{
        !          1176: {\parfillskip=0in \parskip=0in
        !          1177: \hangindent =1in \hangafter=1
        !          1178: \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
        !          1179: }}
        !          1180: 
        !          1181: %% Define two-column mode, which is used in indexes.
        !          1182: %% Adapted from the TeXBook, page 416
        !          1183: \catcode `\@=11
        !          1184: 
        !          1185: \newbox\partialpage
        !          1186: 
        !          1187: \newdimen\doublecolumnhsize  \doublecolumnhsize = 3.11in
        !          1188: \newdimen\doublecolumnvsize  \doublecolumnvsize = 19.1in
        !          1189: \newdimen\availdimen@
        !          1190: 
        !          1191: \def\begindoublecolumns{\begingroup
        !          1192:   \output={\global\setbox\partialpage=\vbox{\unvbox255\kern -\topskip \kern \baselineskip}}\eject
        !          1193:   \output={\doublecolumnout} \hsize=\doublecolumnhsize \vsize=\doublecolumnvsize}
        !          1194: \def\enddoublecolumns{\output={\balancecolumns}\eject
        !          1195:   \endgroup \pagegoal=\vsize}
        !          1196: 
        !          1197: \def\doublecolumnout{\splittopskip=\topskip \splitmaxdepth=\maxdepth
        !          1198:   \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
        !          1199:   \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
        !          1200:   \onepageout\pagesofar \unvbox255 \penalty\outputpenalty}
        !          1201: \def\pagesofar{\unvbox\partialpage %
        !          1202:   \hsize=\doublecolumnhsize % have to restore this since output routine
        !          1203: %            changes it to set cropmarks (P. A. MacKay, 12 Nov. 1986)
        !          1204:   \wd0=\hsize \wd2=\hsize \hbox to\pagewidth{\box0\hfil\box2}}
        !          1205: \def\balancecolumns{%
        !          1206: % Unset the glue.
        !          1207:   \setbox255=\vbox{\unvbox255}
        !          1208:   \dimen@=\ht255
        !          1209:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
        !          1210:   \divide\dimen@ by2
        !          1211:   \availdimen@=\pageheight \advance\availdimen@ by-\ht\partialpage
        !          1212: % If the remaining data is too big for one page,
        !          1213: % output one page normally, then work with what remains.
        !          1214:   \ifdim \dimen@>\availdimen@
        !          1215:    {
        !          1216:      \splittopskip=\topskip \splitmaxdepth=\maxdepth
        !          1217:      \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
        !          1218:      \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
        !          1219:      \onepageout\pagesofar
        !          1220:    }
        !          1221: % Recompute size of what remains, in case we just output some of it.
        !          1222:   \dimen@=\ht255
        !          1223:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
        !          1224:   \divide\dimen@ by2
        !          1225:   \fi
        !          1226:   \setbox0=\vbox{\unvbox255}
        !          1227:   \splittopskip=\topskip
        !          1228:   {\vbadness=10000 \loop \global\setbox3=\copy0
        !          1229:     \global\setbox1=\vsplit3 to\dimen@
        !          1230:     \ifdim\ht3>\dimen@ \global\advance\dimen@ by1pt \repeat}
        !          1231:   \setbox0=\vbox to\dimen@{\unvbox1}  \setbox2=\vbox to\dimen@{\unvbox3}
        !          1232:   \pagesofar}
        !          1233: 
        !          1234: \catcode `\@=\other
        !          1235: \message{sectioning,}
        !          1236: % Define chapters, sections, etc.
        !          1237: 
        !          1238: \newcount \chapno
        !          1239: \newcount \secno
        !          1240: \newcount \subsecno
        !          1241: \newcount \subsubsecno
        !          1242: 
        !          1243: % This counter is funny since it counts through charcodes of letters A, B, ...
        !          1244: \newcount \appendixno  \appendixno = `\@
        !          1245: \def\appendixletter{\char\the\appendixno}
        !          1246: 
        !          1247: \newwrite \contentsfile
        !          1248: % This is called from \setfilename.
        !          1249: \def\opencontents{\openout \contentsfile = \jobname.toc}
        !          1250: 
        !          1251: % Each @chapter defines this as the name of the chapter.
        !          1252: % page headings and footings can use it.  @section does likewise
        !          1253: 
        !          1254: \def\thischapter{} \def\thissection{}
        !          1255: \def\seccheck#1{\if \pageno<0 %
        !          1256: \errmessage{@#1 not allowed after generating table of contents}\fi
        !          1257: %
        !          1258: }
        !          1259: 
        !          1260: \def\chapternofonts{%
        !          1261: \let\rawbackslash=\relax%
        !          1262: \let\frenchspacing=\relax%
        !          1263: \def\TeX{\realbackslash TeX}
        !          1264: \def\dots{\realbackslash dots}
        !          1265: \def\copyright{\realbackslash copyright}
        !          1266: \def\tt{\realbackslash tt}
        !          1267: \def\bf{\realbackslash bf }
        !          1268: \def\w{\realbackslash w}
        !          1269: \def\less{\realbackslash less}
        !          1270: \def\gtr{\realbackslash gtr}
        !          1271: \def\hat{\realbackslash hat}
        !          1272: \def\char{\realbackslash char}
        !          1273: \def\tclose##1{\realbackslash tclose {##1}}
        !          1274: \def\code##1{\realbackslash code {##1}}
        !          1275: \def\samp##1{\realbackslash samp {##1}}
        !          1276: \def\r##1{\realbackslash r {##1}}
        !          1277: \def\b##1{\realbackslash b {##1}}
        !          1278: \def\key##1{\realbackslash key {##1}}
        !          1279: \def\file##1{\realbackslash file {##1}}
        !          1280: \def\kbd##1{\realbackslash kbd {##1}}
        !          1281: % These are redefined because @smartitalic wouldn't work inside xdef.
        !          1282: \def\i##1{\realbackslash i {##1}}
        !          1283: \def\cite##1{\realbackslash cite {##1}}
        !          1284: \def\var##1{\realbackslash var {##1}}
        !          1285: \def\emph##1{\realbackslash emph {##1}}
        !          1286: \def\dfn##1{\realbackslash dfn {##1}}
        !          1287: }
        !          1288: 
        !          1289: \outer\def\chapter{\parsearg\chapterzzz}
        !          1290: \def\chapterzzz #1{\seccheck{chapter}%
        !          1291: \secno=0 \subsecno=0 \subsubsecno=0 \global\advance \chapno by 1 \message{Chapter \the\chapno}%
        !          1292: \chapmacro {#1}{\the\chapno}%
        !          1293: \gdef\thissection{#1}%
        !          1294: \gdef\thischaptername{#1}%
        !          1295: % We don't substitute the actual chapter name into \thischapter
        !          1296: % because we don't want its macros evaluated now.
        !          1297: \xdef\thischapter{Chapter \the\chapno: \noexpand\thischaptername}%
        !          1298: {\chapternofonts%
        !          1299: \edef\temp{{\realbackslash chapentry {#1}{\the\chapno}{\noexpand\folio}}}%
        !          1300: \escapechar=`\\%
        !          1301: \write \contentsfile \temp  %
        !          1302: \donoderef %
        !          1303: }}
        !          1304: 
        !          1305: \outer\def\appendix{\parsearg\appendixzzz}
        !          1306: \def\appendixzzz #1{\seccheck{appendix}%
        !          1307: \secno=0 \subsecno=0 \subsubsecno=0 \global\advance \appendixno by 1 \message{Appendix \appendixletter}%
        !          1308: \chapmacro {#1}{Appendix \appendixletter}%
        !          1309: \gdef\thissection{#1}%
        !          1310: \gdef\thischaptername{#1}%
        !          1311: \xdef\thischapter{Appendix \appendixletter: \noexpand\thischaptername}%
        !          1312: {\chapternofonts%
        !          1313: \edef\temp{{\realbackslash chapentry {#1}{Appendix \appendixletter}{\noexpand\folio}}}%
        !          1314: \escapechar=`\\%
        !          1315: \write \contentsfile \temp  %
        !          1316: \appendixnoderef %
        !          1317: }}
        !          1318: 
        !          1319: \outer\def\unnumbered{\parsearg\unnumberedzzz}
        !          1320: \def\unnumberedzzz #1{\seccheck{unnumbered}%
        !          1321: \secno=0 \subsecno=0 \subsubsecno=0 \message{(#1)}
        !          1322: \unnumbchapmacro {#1}%
        !          1323: \gdef\thischapter{#1}\gdef\thissection{#1}%
        !          1324: {\chapternofonts%
        !          1325: \edef\temp{{\realbackslash unnumbchapentry {#1}{\noexpand\folio}}}%
        !          1326: \escapechar=`\\%
        !          1327: \write \contentsfile \temp  %
        !          1328: \unnumbnoderef %
        !          1329: }}
        !          1330: 
        !          1331: \outer\def\section{\parsearg\sectionzzz}
        !          1332: \def\sectionzzz #1{\seccheck{section}%
        !          1333: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
        !          1334: \gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
        !          1335: {\chapternofonts%
        !          1336: \edef\temp{{\realbackslash secentry %
        !          1337: {#1}{\the\chapno}{\the\secno}{\noexpand\folio}}}%
        !          1338: \escapechar=`\\%
        !          1339: \write \contentsfile \temp %
        !          1340: \donoderef %
        !          1341: \penalty 10000 %
        !          1342: }}
        !          1343: 
        !          1344: \outer\def\appendixsection{\parsearg\appendixsectionzzz}
        !          1345: \outer\def\appendixsec{\parsearg\appendixsectionzzz}
        !          1346: \def\appendixsectionzzz #1{\seccheck{appendixsection}%
        !          1347: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
        !          1348: \gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
        !          1349: {\chapternofonts%
        !          1350: \edef\temp{{\realbackslash secentry %
        !          1351: {#1}{\appendixletter}{\the\secno}{\noexpand\folio}}}%
        !          1352: \escapechar=`\\%
        !          1353: \write \contentsfile \temp %
        !          1354: \appendixnoderef %
        !          1355: \penalty 10000 %
        !          1356: }}
        !          1357: 
        !          1358: \outer\def\unnumberedsec{\parsearg\unnumberedseczzz}
        !          1359: \def\unnumberedseczzz #1{\seccheck{unnumberedsec}%
        !          1360: \plainsecheading {#1}\gdef\thissection{#1}%
        !          1361: {\chapternofonts%
        !          1362: \edef\temp{{\realbackslash unnumbsecentry{#1}{\noexpand\folio}}}%
        !          1363: \escapechar=`\\%
        !          1364: \write \contentsfile \temp %
        !          1365: \unnumbnoderef %
        !          1366: \penalty 10000 %
        !          1367: }}
        !          1368: 
        !          1369: \outer\def\subsection{\parsearg\subsectionzzz}
        !          1370: \def\subsectionzzz #1{\seccheck{subsection}%
        !          1371: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
        !          1372: \subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
        !          1373: {\chapternofonts%
        !          1374: \edef\temp{{\realbackslash subsecentry %
        !          1375: {#1}{\the\chapno}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
        !          1376: \escapechar=`\\%
        !          1377: \write \contentsfile \temp %
        !          1378: \donoderef %
        !          1379: \penalty 10000 %
        !          1380: }}
        !          1381: 
        !          1382: \outer\def\appendixsubsec{\parsearg\appendixsubseczzz}
        !          1383: \def\appendixsubseczzz #1{\seccheck{appendixsubsec}%
        !          1384: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
        !          1385: \subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
        !          1386: {\chapternofonts%
        !          1387: \edef\temp{{\realbackslash subsecentry %
        !          1388: {#1}{\appendixletter}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
        !          1389: \escapechar=`\\%
        !          1390: \write \contentsfile \temp %
        !          1391: \appendixnoderef %
        !          1392: \penalty 10000 %
        !          1393: }}
        !          1394: 
        !          1395: \outer\def\unnumberedsubsec{\parsearg\unnumberedsubseczzz}
        !          1396: \def\unnumberedsubseczzz #1{\seccheck{unnumberedsubsec}%
        !          1397: \plainsecheading {#1}\gdef\thissection{#1}%
        !          1398: {\chapternofonts%
        !          1399: \edef\temp{{\realbackslash unnumbsubsecentry{#1}{\noexpand\folio}}}%
        !          1400: \escapechar=`\\%
        !          1401: \write \contentsfile \temp %
        !          1402: \unnumbnoderef %
        !          1403: \penalty 10000 %
        !          1404: }}
        !          1405: 
        !          1406: \outer\def\subsubsection{\parsearg\subsubsectionzzz}
        !          1407: \def\subsubsectionzzz #1{\seccheck{subsubsection}%
        !          1408: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
        !          1409: \subsubsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
        !          1410: {\chapternofonts%
        !          1411: \edef\temp{{\realbackslash subsubsecentry %
        !          1412: {#1}{\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}{\noexpand\folio}}}%\
        !          1413: \escapechar=`\\%
        !          1414: \write \contentsfile \temp %
        !          1415: \donoderef %
        !          1416: \penalty 10000 %
        !          1417: }}
        !          1418: 
        !          1419: \outer\def\appendixsubsubsec{\parsearg\appendixsubsubseczzz}
        !          1420: \def\appendixsubsubseczzz #1{\seccheck{appendixsubsubsec}%
        !          1421: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
        !          1422: \subsubsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
        !          1423: {\chapternofonts%
        !          1424: \edef\temp{{\realbackslash subsubsecentry{#1}%
        !          1425: {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}{\noexpand\folio}}}%\
        !          1426: \escapechar=`\\%
        !          1427: \write \contentsfile \temp %
        !          1428: \appendixnoderef %
        !          1429: \penalty 10000 %
        !          1430: }}
        !          1431: 
        !          1432: \outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
        !          1433: \def\unnumberedsubsubseczzz #1{\seccheck{unnumberedsubsubsec}%
        !          1434: \plainsecheading {#1}\gdef\thissection{#1}%
        !          1435: {\chapternofonts%
        !          1436: \edef\temp{{\realbackslash unnumbsubsubsecentry{#1}{\noexpand\folio}}}%
        !          1437: \escapechar=`\\%
        !          1438: \write \contentsfile \temp %
        !          1439: \unnumbnoderef %
        !          1440: \penalty 10000 %
        !          1441: }}
        !          1442: 
        !          1443: % These are variants which are not "outer", so they can appear in @ifinfo.
        !          1444: \def\infounnumbered{\parsearg\unnumberedzzz}
        !          1445: \def\infounnumberedsec{\parsearg\unnumberedseczzz}
        !          1446: \def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
        !          1447: \def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
        !          1448: 
        !          1449: \def\infoappendix{\parsearg\appendixzzz}
        !          1450: \def\infoappendixsec{\parsearg\appendixseczzz}
        !          1451: \def\infoappendixsubsec{\parsearg\appendixsubseczzz}
        !          1452: \def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
        !          1453: 
        !          1454: \def\infochapter{\parsearg\chapterzzz}
        !          1455: \def\infosection{\parsearg\sectionzzz}
        !          1456: \def\infosubsection{\parsearg\subsectionzzz}
        !          1457: \def\infosubsubsection{\parsearg\subsubsectionzzz}
        !          1458: 
        !          1459: % Define @majorheading, @heading and @subheading
        !          1460: 
        !          1461: \def\majorheading{\parsearg\majorheadingzzz}
        !          1462: \def\majorheadingzzz #1{%
        !          1463: {\advance\chapheadingskip by 10pt \chapbreak }%
        !          1464: {\chapfonts \line{\rm #1\hfill}}\bigskip \par\penalty 200}
        !          1465: 
        !          1466: \def\chapheading{\parsearg\chapheadingzzz}
        !          1467: \def\chapheadingzzz #1{\chapbreak %
        !          1468: {\chapfonts \line{\rm #1\hfill}}\bigskip \par\penalty 200}
        !          1469: 
        !          1470: \def\heading{\parsearg\secheadingi}
        !          1471: 
        !          1472: \def\subheading{\parsearg\subsecheadingi}
        !          1473: 
        !          1474: \def\subsubheading{\parsearg\subsubsecheadingi}
        !          1475: 
        !          1476: % These macros generate a chapter, section, etc. heading only
        !          1477: % (including whitespace, linebreaking, etc. around it),
        !          1478: % given all the information in convenient, parsed form.
        !          1479: 
        !          1480: %%% Args are the skip and penalty (usually negative)
        !          1481: \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
        !          1482: 
        !          1483: \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
        !          1484: 
        !          1485: %%% Define plain chapter starts, and page on/off switching for it
        !          1486: % Parameter controlling skip before chapter headings (if needed)
        !          1487: 
        !          1488: \newskip \chapheadingskip \chapheadingskip = 30pt plus 8pt minus 4pt
        !          1489: 
        !          1490: \def\chapbreak{\dobreak \chapheadingskip {-4000}}
        !          1491: \def\chappager{\par\vfill\supereject}
        !          1492: \def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
        !          1493: 
        !          1494: \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
        !          1495: 
        !          1496: \def\CHAPPAGoff{
        !          1497: \global\let\pchapsepmacro=\chapbreak
        !          1498: \global\let\pagealignmacro=\chappager}
        !          1499: 
        !          1500: \def\CHAPPAGon{
        !          1501: \global\let\pchapsepmacro=\chappager
        !          1502: \global\let\pagealignmacro=\chappager
        !          1503: \global\def\HEADINGSon{\HEADINGSsingle}}
        !          1504: 
        !          1505: \def\CHAPPAGodd{
        !          1506: \global\let\pchapsepmacro=\chapoddpage
        !          1507: \global\let\pagealignmacro=\chapoddpage
        !          1508: \global\def\HEADINGSon{\HEADINGSdouble}}
        !          1509: 
        !          1510: \CHAPPAGon
        !          1511: 
        !          1512: \def\CHAPFplain{
        !          1513: \global\let\chapmacro=\chfplain
        !          1514: \global\let\unnumbchapmacro=\unnchfplain}
        !          1515: 
        !          1516: \def\chfplain #1#2{%
        !          1517:   \pchapsepmacro
        !          1518:   {%
        !          1519:     \chapfonts
        !          1520:     \leftline{\rm #2\enspace #1}%
        !          1521:   }%
        !          1522:   \bigskip
        !          1523:   \penalty5000
        !          1524: }
        !          1525: 
        !          1526: \def\unnchfplain #1{%
        !          1527: \pchapsepmacro %
        !          1528: {\chapfonts \line{\rm #1\hfill}}\bigskip \par\penalty 10000 %
        !          1529: }
        !          1530: \CHAPFplain % The default
        !          1531: 
        !          1532: \def\unnchfopen #1{%
        !          1533: \chapoddpage {\chapfonts \line{\rm #1\hfill}}\bigskip \par\penalty 10000 %
        !          1534: }
        !          1535: 
        !          1536: \def\chfopen #1#2{\chapoddpage {\chapfonts
        !          1537: \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
        !          1538: \par\penalty 5000 %
        !          1539: }
        !          1540: 
        !          1541: \def\CHAPFopen{
        !          1542: \global\let\chapmacro=\chfopen
        !          1543: \global\let\unnumbchapmacro=\unnchfopen}
        !          1544: 
        !          1545: % Parameter controlling skip before section headings.
        !          1546: 
        !          1547: \newskip \subsecheadingskip  \subsecheadingskip = 17pt plus 8pt minus 4pt
        !          1548: \def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
        !          1549: 
        !          1550: \newskip \secheadingskip  \secheadingskip = 21pt plus 8pt minus 4pt
        !          1551: \def\secheadingbreak{\dobreak \secheadingskip {-1000}}
        !          1552: 
        !          1553: 
        !          1554: % Section fonts are the base font at magstep2, which produces
        !          1555: % a size a bit more than 14 points in the default situation.   
        !          1556: 
        !          1557: \def\secheading #1#2#3{\secheadingi {#2.#3\enspace #1}}
        !          1558: \def\plainsecheading #1{\secheadingi {#1}}
        !          1559: \def\secheadingi #1{{\advance \secheadingskip by \parskip %
        !          1560: \secheadingbreak}%
        !          1561: {\secfonts \line{\rm #1\hfill}}%
        !          1562: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
        !          1563: 
        !          1564: 
        !          1565: % Subsection fonts are the base font at magstep1, 
        !          1566: % which produces a size of 12 points.
        !          1567: 
        !          1568: \def\subsecheading #1#2#3#4{\subsecheadingi {#2.#3.#4\enspace #1}}
        !          1569: \def\subsecheadingi #1{{\advance \subsecheadingskip by \parskip %
        !          1570: \subsecheadingbreak}%
        !          1571: {\subsecfonts \line{\rm #1\hfill}}%
        !          1572: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
        !          1573: 
        !          1574: \def\subsubsecfonts{\subsecfonts} % Maybe this should change:
        !          1575:                                  % Perhaps make sssec fonts scaled
        !          1576:                                  % magstep half
        !          1577: \def\subsubsecheading #1#2#3#4#5{\subsubsecheadingi {#2.#3.#4.#5\enspace #1}}
        !          1578: \def\subsubsecheadingi #1{{\advance \subsecheadingskip by \parskip %
        !          1579: \subsecheadingbreak}%
        !          1580: {\subsubsecfonts \line{\rm #1\hfill}}%
        !          1581: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000}
        !          1582: 
        !          1583: 
        !          1584: \message{toc printing,}
        !          1585: 
        !          1586: % Finish up the main text and prepare to read what we've written
        !          1587: % to \contentsfile.
        !          1588: 
        !          1589: \def\startcontents#1{%
        !          1590:    \ifnum \pageno>0
        !          1591:       \pagealignmacro
        !          1592:       \immediate\closeout \contentsfile
        !          1593:       \pageno = -1             % Request roman numbered pages.
        !          1594:    \fi
        !          1595:    % Don't need to put `Contents' or `Short Contents' in the headline. 
        !          1596:    % It is abundantly clear what they are.
        !          1597:    \unnumbchapmacro{#1}\def\thischapter{}%
        !          1598:    \begingroup                 % Set up to handle contents files properly.
        !          1599:       \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11
        !          1600:       \raggedbottom             % Worry more about breakpoints than the bottom.
        !          1601:       \advance\hsize by -1in    % Don't use the full line length.
        !          1602: }
        !          1603: 
        !          1604:   
        !          1605: % Normal (long) toc.
        !          1606: \outer\def\contents{%
        !          1607:    \startcontents{Table of Contents}%
        !          1608:       \input \jobname.toc
        !          1609:    \endgroup
        !          1610:    \vfill \eject
        !          1611: }
        !          1612: 
        !          1613: % And just the chapters.
        !          1614: \outer\def\summarycontents{%
        !          1615:    \startcontents{Short Contents}%
        !          1616:       %
        !          1617:       \let\chapentry = \shortchapentry
        !          1618:       \let\unnumbchapentry = \shortunnumberedentry
        !          1619:       % We want a true roman here for the page numbers.
        !          1620:       \secfonts \let\rm = \truesecrm \rm
        !          1621:       \advance\baselineskip by 1pt % Open it up a little.
        !          1622:       \def\secentry ##1##2##3##4{}
        !          1623:       \def\unnumbsecentry ##1##2{}
        !          1624:       \def\subsecentry ##1##2##3##4##5{}
        !          1625:       \def\unnumbsubsecentry ##1##2{}
        !          1626:       \def\subsubsecentry ##1##2##3##4##5##6{}
        !          1627:       \def\unnumbsubsubsecentry ##1##2{}
        !          1628:       \input \jobname.toc
        !          1629:    \endgroup
        !          1630:    \vfill \eject
        !          1631: }
        !          1632: \let\shortcontents = \summarycontents
        !          1633: 
        !          1634: % These macros generate individual entries in the table of contents.
        !          1635: % The first argument is the chapter or section name.
        !          1636: % The last argument is the page number.
        !          1637: % The arguments in between are the chapter number, section number, ...
        !          1638: 
        !          1639: % Chapter-level things, for both the long and short contents.
        !          1640: \def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
        !          1641: \def\shortchapentry#1#2#3{%
        !          1642:    \line{{#2\labelspace #1}\dotfill\doshortpageno{#3}}%
        !          1643: }
        !          1644: 
        !          1645: \def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
        !          1646: \def\shortunnumberedentry#1#2{%
        !          1647:    \line{#1\dotfill\doshortpageno{#2}}%
        !          1648: }
        !          1649: 
        !          1650: % Sections.
        !          1651: \def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
        !          1652: \def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
        !          1653: 
        !          1654: % Subsections.
        !          1655: \def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
        !          1656: \def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
        !          1657: 
        !          1658: % And subsubsections.
        !          1659: \def\subsubsecentry#1#2#3#4#5#6{\dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
        !          1660: \def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
        !          1661: 
        !          1662: 
        !          1663: % This parameter controls the indentation of the various levels.
        !          1664: \newdimen\tocindent \tocindent = 3pc
        !          1665: 
        !          1666: % Now for the actual typesetting. In all these, #1 is the text and #2 is the 
        !          1667: % page number.
        !          1668: %
        !          1669: % If the toc has to be broken over pages, we would want to be at chapters 
        !          1670: % if at all possible; hence the \penalty.
        !          1671: \def\dochapentry#1#2{%
        !          1672:    \penalty-300 \vskip\baselineskip
        !          1673:    \line{\chapentryfonts #1\dotfill \dopageno{#2}}%
        !          1674:    \nobreak\vskip .25\baselineskip
        !          1675: }
        !          1676: 
        !          1677: \def\dosecentry#1#2{%
        !          1678:    \line{\secentryfonts \hskip\tocindent #1\dotfill \dopageno{#2}}%
        !          1679: }
        !          1680: 
        !          1681: \def\dosubsecentry#1#2{%
        !          1682:    \line{\subsecentryfonts \hskip2\tocindent #1\dotfill \dopageno{#2}}%
        !          1683: }
        !          1684: 
        !          1685: \def\dosubsubsecentry#1#2{%
        !          1686:    \line{\subsubsecentryfonts \hskip3\tocindent #1\dotfill \dopageno{#2}}%
        !          1687: }
        !          1688: 
        !          1689: % Space between chapter (or whatever) number and the title.
        !          1690: \def\labelspace{\hskip1em \relax}
        !          1691: 
        !          1692: \def\dopageno#1{{\rm #1}}
        !          1693: \def\doshortpageno#1{{\rm #1}}
        !          1694: 
        !          1695: \def\chapentryfonts{\secfonts \rm}
        !          1696: \def\secentryfonts{\textfonts}
        !          1697: \let\subsecentryfonts = \textfonts
        !          1698: \let\subsubsecentryfonts = \textfonts
        !          1699: 
        !          1700: 
        !          1701: \message{environments,}
        !          1702: 
        !          1703: % Since these characters are used in examples, it should be an even number of 
        !          1704: % \tt widths. Each \tt character is 1en, so two makes it 1em.
        !          1705: % Furthermore, these definitions must come after we define our fonts.
        !          1706: \newbox\dblarrowbox    \newbox\longdblarrowbox
        !          1707: \newbox\pushcharbox    \newbox\bullbox
        !          1708: \newbox\equivbox       \newbox\errorbox
        !          1709: 
        !          1710: \let\ptexequiv = \equiv
        !          1711: 
        !          1712: {\tentt
        !          1713: \global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
        !          1714: \global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
        !          1715: \global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
        !          1716: \global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
        !          1717: % Adapted from the manmac format (p.420 of TeXbook)
        !          1718: \global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
        !          1719:                                       depth .1ex\hfil}
        !          1720: }
        !          1721: 
        !          1722: \def\point{$\star$}
        !          1723: 
        !          1724: \def\result{\leavevmode\raise.15ex\copy\dblarrowbox}
        !          1725: \def\expansion{\leavevmode\raise.1ex\copy\longdblarrowbox}
        !          1726: \def\print{\leavevmode\lower.1ex\copy\pushcharbox}
        !          1727: 
        !          1728: \def\equiv{\leavevmode\lower.1ex\copy\equivbox}
        !          1729: 
        !          1730: % Does anyone really want this?
        !          1731: % \def\bull{\leavevmode\copy\bullbox}
        !          1732: 
        !          1733: % Adapted from the TeXbook's \boxit.
        !          1734: {\tentt \global\dimen0 = 3em}% Width of the box.
        !          1735: \dimen2 = .55pt % Thickness of rules
        !          1736: % The text. (`r' is open on the right, `e' somewhat less so on the left.)
        !          1737: \setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
        !          1738: 
        !          1739: \global\setbox\errorbox=\hbox to \dimen0{\hfil
        !          1740:    \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
        !          1741:    \advance\hsize by -2\dimen2 % Rules.
        !          1742:    \vbox{
        !          1743:       \hrule height\dimen2
        !          1744:       \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
        !          1745:          \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
        !          1746:          \kern3pt\vrule width\dimen2}% Space to right.
        !          1747:       \hrule height\dimen2}
        !          1748:     \hfil}
        !          1749: 
        !          1750: % The @error{} command.
        !          1751: \def\error{\leavevmode\lower.7ex\copy\errorbox}
        !          1752: 
        !          1753: % @tex ... @end tex    escapes into raw Tex temporarily.
        !          1754: % One exception: @ is still an escape character, so that @end tex works.
        !          1755: % But \@ or @@ will get a plain tex @ character.
        !          1756: 
        !          1757: \def\tex{\begingroup
        !          1758: \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
        !          1759: \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
        !          1760: \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
        !          1761: \catcode `\%=14
        !          1762: \catcode`\"=12
        !          1763: \catcode`\==12
        !          1764: \catcode`\|=12
        !          1765: \catcode`\<=12
        !          1766: \catcode`\>=12
        !          1767: \escapechar=`\\
        !          1768: %
        !          1769: \let\{=\ptexlbrace
        !          1770: \let\}=\ptexrbrace
        !          1771: \let\.=\ptexdot
        !          1772: \let\*=\ptexstar
        !          1773: \let\dots=\ptexdots
        !          1774: \def\@={@}%
        !          1775: \let\bullet=\ptexbullet
        !          1776: \let\b=\ptexb \let\c=\ptexc \let\i=\ptexi \let\t=\ptext \let\l=\ptexl
        !          1777: \let\L=\ptexL
        !          1778: %
        !          1779: \let\Etex=\endgroup}
        !          1780: 
        !          1781: % Define @lisp ... @endlisp.
        !          1782: % @lisp does a \begingroup so it can rebind things,
        !          1783: % including the definition of @endlisp (which normally is erroneous).
        !          1784: 
        !          1785: % Amount to narrow the margins by for @lisp.
        !          1786: \newskip\lispnarrowing \lispnarrowing=0.4in
        !          1787: 
        !          1788: % This is the definition that ^M gets inside @lisp
        !          1789: % phr: changed space to \null, to avoid overfull hbox problems.
        !          1790: {\obeyspaces%
        !          1791: \gdef\lisppar{\null\endgraf}}
        !          1792: 
        !          1793: % Cause \obeyspaces to make each Space cause a word-separation
        !          1794: % rather than the default which is that it acts punctuation.
        !          1795: % This is because space in tt font looks funny.
        !          1796: {\obeyspaces %
        !          1797: \gdef\sepspaces{\def {\ }}}
        !          1798: 
        !          1799: \newskip\aboveenvskipamount \aboveenvskipamount= 0pt
        !          1800: \def\aboveenvbreak{{\advance\aboveenvskipamount by \parskip
        !          1801: \endgraf \ifdim\lastskip<\aboveenvskipamount
        !          1802: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}}
        !          1803: 
        !          1804: \def\afterenvbreak{\endgraf \ifdim\lastskip<\aboveenvskipamount
        !          1805: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}
        !          1806: 
        !          1807: \def\lisp{\aboveenvbreak\begingroup\inENV %This group ends at the end of the @lisp body
        !          1808: \hfuzz=12truept % Don't be fussy
        !          1809: % Make spaces be word-separators rather than space tokens.
        !          1810: \sepspaces %
        !          1811: % Single space lines
        !          1812: \singlespace %
        !          1813: % The following causes blank lines not to be ignored
        !          1814: % by adding a space to the end of each line.
        !          1815: \let\par=\lisppar
        !          1816: \def\Elisp{\endgroup\afterenvbreak}%
        !          1817: \parskip=0pt
        !          1818: \advance \leftskip by \lispnarrowing
        !          1819: \parindent=0pt
        !          1820: \let\exdent=\internalexdent
        !          1821: \obeyspaces \obeylines \tt \rawbackslash
        !          1822: \def\next##1{}\next}
        !          1823: 
        !          1824: 
        !          1825: \let\example=\lisp
        !          1826: \def\Eexample{\Elisp}
        !          1827: 
        !          1828: \let\smallexample=\lisp
        !          1829: \def\Esmallexample{\Elisp}
        !          1830: 
        !          1831: % Macro for 9 pt. examples, necessary to print with 5" lines.
        !          1832: % From Pavel@xerox.  This is not really used unless the
        !          1833: % @smallbook command is given.
        !          1834: 
        !          1835: \def\smalllispx{\aboveenvbreak\begingroup\inENV
        !          1836: %                      This group ends at the end of the @lisp body
        !          1837: \hfuzz=12truept % Don't be fussy
        !          1838: % Make spaces be word-separators rather than space tokens.
        !          1839: \sepspaces %
        !          1840: % Single space lines
        !          1841: \singlespace %
        !          1842: % The following causes blank lines not to be ignored
        !          1843: % by adding a space to the end of each line.
        !          1844: \let\par=\lisppar
        !          1845: \def\Esmalllisp{\endgroup\afterenvbreak}%
        !          1846: \parskip=0pt
        !          1847: \advance \leftskip by \lispnarrowing
        !          1848: \parindent=0pt
        !          1849: \let\exdent=\internalexdent
        !          1850: \obeyspaces \obeylines \ninett \indexfonts \rawbackslash
        !          1851: \def\next##1{}\next}
        !          1852: 
        !          1853: % This is @display; same as @lisp except use roman font.
        !          1854: 
        !          1855: \def\display{\begingroup\inENV %This group ends at the end of the @display body
        !          1856: \aboveenvbreak
        !          1857: % Make spaces be word-separators rather than space tokens.
        !          1858: \sepspaces %
        !          1859: % Single space lines
        !          1860: \singlespace %
        !          1861: % The following causes blank lines not to be ignored
        !          1862: % by adding a space to the end of each line.
        !          1863: \let\par=\lisppar
        !          1864: \def\Edisplay{\endgroup\afterenvbreak}%
        !          1865: \parskip=0pt
        !          1866: \advance \leftskip by \lispnarrowing
        !          1867: \parindent=0pt
        !          1868: \let\exdent=\internalexdent
        !          1869: \obeyspaces \obeylines
        !          1870: \def\next##1{}\next}
        !          1871: 
        !          1872: % This is @format; same as @lisp except use roman font and don't narrow margins
        !          1873: 
        !          1874: \def\format{\begingroup\inENV %This group ends at the end of the @format body
        !          1875: \aboveenvbreak
        !          1876: % Make spaces be word-separators rather than space tokens.
        !          1877: \sepspaces %
        !          1878: \singlespace %
        !          1879: % The following causes blank lines not to be ignored
        !          1880: % by adding a space to the end of each line.
        !          1881: \let\par=\lisppar
        !          1882: \def\Eformat{\endgroup\afterenvbreak}
        !          1883: \parskip=0pt \parindent=0pt
        !          1884: \obeyspaces \obeylines
        !          1885: \def\next##1{}\next}
        !          1886: 
        !          1887: % @flushleft and @flushright
        !          1888: 
        !          1889: \def\flushleft{\begingroup\inENV %This group ends at the end of the @format body
        !          1890: \aboveenvbreak
        !          1891: % Make spaces be word-separators rather than space tokens.
        !          1892: \sepspaces %
        !          1893: % The following causes blank lines not to be ignored
        !          1894: % by adding a space to the end of each line.
        !          1895: % This also causes @ to work when the directive name
        !          1896: % is terminated by end of line.
        !          1897: \let\par=\lisppar
        !          1898: \def\Eflushleft{\endgroup\afterenvbreak}%
        !          1899: \parskip=0pt \parindent=0pt
        !          1900: \obeyspaces \obeylines
        !          1901: \def\next##1{}\next}
        !          1902: 
        !          1903: \def\flushright{\begingroup\inENV %This group ends at the end of the @format body
        !          1904: \aboveenvbreak
        !          1905: % Make spaces be word-separators rather than space tokens.
        !          1906: \sepspaces %
        !          1907: % The following causes blank lines not to be ignored
        !          1908: % by adding a space to the end of each line.
        !          1909: % This also causes @ to work when the directive name
        !          1910: % is terminated by end of line.
        !          1911: \let\par=\lisppar
        !          1912: \def\Eflushright{\endgroup\afterenvbreak}%
        !          1913: \parskip=0pt \parindent=0pt
        !          1914: \advance \leftskip by 0pt plus 1fill
        !          1915: \obeyspaces \obeylines
        !          1916: \def\next##1{}\next}
        !          1917: 
        !          1918: % @quotation - narrow the margins.
        !          1919: 
        !          1920: \def\quotation{\begingroup\inENV %This group ends at the end of the @quotation body
        !          1921: {\parskip=0pt  % because we will skip by \parskip too, later
        !          1922: \aboveenvbreak}%
        !          1923: \singlespace
        !          1924: \parindent=0pt
        !          1925: \def\Equotation{\par\endgroup\afterenvbreak}%
        !          1926: \advance \rightskip by \lispnarrowing 
        !          1927: \advance \leftskip by \lispnarrowing}
        !          1928: 
        !          1929: \message{defuns,}
        !          1930: % Define formatter for defuns
        !          1931: % First, allow user to change definition object font (\df) internally
        !          1932: \def\setdeffont #1 {\csname DEF#1\endcsname}
        !          1933: 
        !          1934: \newskip\defbodyindent \defbodyindent=.4in
        !          1935: \newskip\defargsindent \defargsindent=50pt
        !          1936: \newskip\deftypemargin \deftypemargin=12pt
        !          1937: \newskip\deflastargmargin \deflastargmargin=18pt
        !          1938: 
        !          1939: \newcount\parencount
        !          1940: % define \functionparens, which makes ( and ) and & do special things.
        !          1941: % \functionparens affects the group it is contained in.
        !          1942: \def\activeparens{%
        !          1943: \catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
        !          1944: \catcode`\[=\active \catcode`\]=\active}
        !          1945: {\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
        !          1946: \gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
        !          1947: \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
        !          1948: 
        !          1949: % Definitions of (, ) and & used in args for functions.
        !          1950: % This is the definition of ( outside of all parentheses.
        !          1951: \gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested %
        !          1952: \global\advance\parencount by 1 }
        !          1953: %
        !          1954: % This is the definition of ( when already inside a level of parens.
        !          1955: \gdef\opnested{\char`\(\global\advance\parencount by 1 }
        !          1956: %
        !          1957: \gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
        !          1958: % also in that case restore the outer-level definition of (.
        !          1959: \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
        !          1960: \global\advance \parencount by -1 }
        !          1961: % If we encounter &foo, then turn on ()-hacking afterwards
        !          1962: \gdef\amprm#1 {{\rm\&#1}\let(=\oprm \let)=\clrm\ }
        !          1963: %
        !          1964: \gdef\normalparens{\boldbrax\let&=\ampnr}
        !          1965: } % End of definition inside \activeparens
        !          1966: %% These parens (in \boldbrax) actually are a little bolder than the
        !          1967: %% contained text.  This is especially needed for [ and ]
        !          1968: \def\opnr{{\sf\char`\(}} \def\clnr{{\sf\char`\)}} \def\ampnr{\&}
        !          1969: \def\lbrb{{\bf\char`\[}} \def\rbrb{{\bf\char`\]}}
        !          1970: 
        !          1971: % First, defname, which formats the header line itself.
        !          1972: % #1 should be the function name.
        !          1973: % #2 should be the type of definition, such as "Function".
        !          1974: 
        !          1975: \def\defname #1#2{%
        !          1976: \leftskip = 0in  %
        !          1977: \noindent        %
        !          1978: \setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}%
        !          1979: \dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
        !          1980: \dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
        !          1981: \parshape 2 0in \dimen0 \defargsindent \dimen1     %
        !          1982: % Now output arg 2 ("Function" or some such)
        !          1983: % ending at \deftypemargin from the right margin,
        !          1984: % but stuck inside a box of width 0 so it does not interfere with linebreaking
        !          1985: \rlap{\rightline{{\rm #2}\hskip \deftypemargin}}%
        !          1986: \tolerance=10000 \hbadness=10000    % Make all lines underfull and no complaints
        !          1987: {\df #1}\enskip        % Generate function name
        !          1988: }
        !          1989: 
        !          1990: % Actually process the body of a definition
        !          1991: % #1 should be the terminating control sequence, such as \Edefun.
        !          1992: % #2 should be the "another name" control sequence, such as \defunx.
        !          1993: % #3 should be the control sequence that actually processes the header,
        !          1994: %    such as \defunheader.
        !          1995: 
        !          1996: \def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
        !          1997: \medbreak %
        !          1998: % Define the end token that this defining construct specifies
        !          1999: % so that it will exit this group.
        !          2000: \def#1{\endgraf\endgroup\medbreak}%
        !          2001: \def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
        !          2002: \parindent=0in \leftskip=\defbodyindent \rightskip=\defbodyindent %
        !          2003: \begingroup %
        !          2004: \catcode 61=\active %
        !          2005: \obeylines\activeparens\spacesplit#3}
        !          2006: 
        !          2007: \def\defmethparsebody #1#2#3#4 {\begingroup\inENV %
        !          2008: \medbreak %
        !          2009: % Define the end token that this defining construct specifies
        !          2010: % so that it will exit this group.
        !          2011: \def#1{\endgraf\endgroup\medbreak}%
        !          2012: \def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
        !          2013: \parindent=0in \leftskip=\defbodyindent \rightskip=\defbodyindent %
        !          2014: \begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
        !          2015: 
        !          2016: \def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
        !          2017: \medbreak %
        !          2018: % Define the end token that this defining construct specifies
        !          2019: % so that it will exit this group.
        !          2020: \def#1{\endgraf\endgroup\medbreak}%
        !          2021: \def#2##1 ##2 {\def#4{##1}%
        !          2022: \begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
        !          2023: \parindent=0in \leftskip=\defbodyindent %
        !          2024: \begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
        !          2025: 
        !          2026: % Split up #2 at the first space token.
        !          2027: % call #1 with two arguments:
        !          2028: %  the first is all of #2 before the space token,
        !          2029: %  the second is all of #2 after that space token.
        !          2030: % If #2 contains no space token, all of it is passed as the first arg
        !          2031: % and the second is passed as empty.
        !          2032: 
        !          2033: {\obeylines
        !          2034: \gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
        !          2035: \long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
        !          2036: \ifx\relax #3%
        !          2037: #1{#2}{}\else #1{#2}{#3#4}\fi}}
        !          2038: 
        !          2039: % So much for the things common to all kinds of definitions.
        !          2040: 
        !          2041: % Define @defun.
        !          2042: 
        !          2043: % First, define the processing that is wanted for arguments of \defun
        !          2044: % Use this to expand the args and terminate the paragraph they make up
        !          2045: 
        !          2046: \def\defunargs #1{\functionparens \sl
        !          2047: % Expand, preventing hyphenation at `-' chars.
        !          2048: % Note that groups don't affect changes in \hyphenchar.
        !          2049: \hyphenchar\sl=0
        !          2050: #1%
        !          2051: \hyphenchar\sl=45
        !          2052: \ifnum\parencount=0 \else \errmessage{unbalanced parens in @def arguments}\fi%
        !          2053: \interlinepenalty=10000
        !          2054: \advance\rightskip by 0pt plus 1fil
        !          2055: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
        !          2056: }
        !          2057: 
        !          2058: \def\deftypefunargs #1{%
        !          2059: % Expand, preventing hyphenation at `-' chars.
        !          2060: % Note that groups don't affect changes in \hyphenchar.
        !          2061: \functionparens
        !          2062: \code{#1}%
        !          2063: \interlinepenalty=10000
        !          2064: \advance\rightskip by 0pt plus 1fil
        !          2065: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
        !          2066: }
        !          2067: 
        !          2068: % Do complete processing of one @defun or @defunx line already parsed.
        !          2069: 
        !          2070: % @deffn Command forward-char nchars
        !          2071: 
        !          2072: \def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
        !          2073: 
        !          2074: \def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
        !          2075: \begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
        !          2076: \catcode 61=\other % Turn off change made in \defparsebody
        !          2077: }
        !          2078: 
        !          2079: % @defun == @deffn Function
        !          2080: 
        !          2081: \def\defun{\defparsebody\Edefun\defunx\defunheader}
        !          2082: 
        !          2083: \def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2084: \begingroup\defname {#1}{Function}%
        !          2085: \defunargs {#2}\endgroup %
        !          2086: \catcode 61=\other % Turn off change made in \defparsebody
        !          2087: }
        !          2088: 
        !          2089: % @deftypefun int foobar (int @var{foo}, float @var{bar})
        !          2090: 
        !          2091: \def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
        !          2092: 
        !          2093: % #1 is the data type.  #2 is the name and args.
        !          2094: \def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
        !          2095: % #1 is the data type, #2 the name, #3 the args.
        !          2096: \def\deftypefunheaderx #1#2 #3\relax{\doind {fn}{\code{#2}}% Make entry in function index
        !          2097: \begingroup\defname {\code{#1} #2}{Function}%
        !          2098: \deftypefunargs {#3}\endgroup %
        !          2099: \catcode 61=\other % Turn off change made in \defparsebody
        !          2100: }
        !          2101: 
        !          2102: % @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
        !          2103: 
        !          2104: \def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
        !          2105: 
        !          2106: % #1 is the classification.  #2 is the data type.  #3 is the name and args.
        !          2107: \def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
        !          2108: % #1 is the classification, #2 the data type, #3 the name, #4 the args.
        !          2109: \def\deftypefnheaderx #1#2#3 #4\relax{\doind {fn}{\code{#3}}% Make entry in function index
        !          2110: \begingroup\defname {\code{#2} #3}{#1}%
        !          2111: \deftypefunargs {#4}\endgroup %
        !          2112: \catcode 61=\other % Turn off change made in \defparsebody
        !          2113: }
        !          2114: 
        !          2115: % @defmac == @deffn Macro
        !          2116: 
        !          2117: \def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
        !          2118: 
        !          2119: \def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2120: \begingroup\defname {#1}{Macro}%
        !          2121: \defunargs {#2}\endgroup %
        !          2122: \catcode 61=\other % Turn off change made in \defparsebody
        !          2123: }
        !          2124: 
        !          2125: % @defspec == @deffn Special Form
        !          2126: 
        !          2127: \def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
        !          2128: 
        !          2129: \def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2130: \begingroup\defname {#1}{Special Form}%
        !          2131: \defunargs {#2}\endgroup %
        !          2132: \catcode 61=\other % Turn off change made in \defparsebody
        !          2133: }
        !          2134: 
        !          2135: % This definition is run if you use @defunx
        !          2136: % anywhere other than immediately after a @defun or @defunx.
        !          2137: 
        !          2138: \def\deffnx #1 {\errmessage{@deffnx in invalid context}}
        !          2139: \def\defunx #1 {\errmessage{@defunx in invalid context}}
        !          2140: \def\defmacx #1 {\errmessage{@defmacx in invalid context}}
        !          2141: \def\defspecx #1 {\errmessage{@defspecx in invalid context}}
        !          2142: \def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
        !          2143: \def\deftypeunx #1 {\errmessage{@deftypeunx in invalid context}}
        !          2144: 
        !          2145: % @defmethod, and so on
        !          2146: 
        !          2147: % @defop {Funny Method} foo-class frobnicate argument
        !          2148: 
        !          2149: \def\defop #1 {\def\defoptype{#1}%
        !          2150: \defopparsebody\Edefop\defopx\defopheader\defoptype}
        !          2151: 
        !          2152: \def\defopheader #1#2#3{\dosubind {fn}{\code{#2}}{on #1}% Make entry in function index
        !          2153: \begingroup\defname {#2}{\defoptype{} on #1}%
        !          2154: \defunargs {#3}\endgroup %
        !          2155: }
        !          2156: 
        !          2157: % @defmethod == @defop Method
        !          2158: 
        !          2159: \def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
        !          2160: 
        !          2161: \def\defmethodheader #1#2#3{\dosubind {fn}{\code{#2}}{on #1}% entry in function index
        !          2162: \begingroup\defname {#2}{Method on #1}%
        !          2163: \defunargs {#3}\endgroup %
        !          2164: }
        !          2165: 
        !          2166: % @defcv {Class Option} foo-class foo-flag
        !          2167: 
        !          2168: \def\defcv #1 {\def\defcvtype{#1}%
        !          2169: \defopparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
        !          2170: 
        !          2171: \def\defcvarheader #1#2#3{%
        !          2172: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
        !          2173: \begingroup\defname {#2}{\defcvtype{} of #1}%
        !          2174: \defvarargs {#3}\endgroup %
        !          2175: }
        !          2176: 
        !          2177: % @defivar == @defcv {Instance Variable}
        !          2178: 
        !          2179: \def\defivar{\defmethparsebody\Edefivar\defivarx\defivarheader}
        !          2180: 
        !          2181: \def\defivarheader #1#2#3{%
        !          2182: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
        !          2183: \begingroup\defname {#2}{Instance Variable of #1}%
        !          2184: \defvarargs {#3}\endgroup %
        !          2185: }
        !          2186: 
        !          2187: % These definitions are run if you use @defmethodx, etc.,
        !          2188: % anywhere other than immediately after a @defmethod, etc.
        !          2189: 
        !          2190: \def\defopx #1 {\errmessage{@defopx in invalid context}}
        !          2191: \def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
        !          2192: \def\defcvx #1 {\errmessage{@defcvx in invalid context}}
        !          2193: \def\defivarx #1 {\errmessage{@defivarx in invalid context}}
        !          2194: 
        !          2195: % Now @defvar
        !          2196: 
        !          2197: % First, define the processing that is wanted for arguments of @defvar.
        !          2198: % This is actually simple: just print them in roman.
        !          2199: % This must expand the args and terminate the paragraph they make up
        !          2200: \def\defvarargs #1{\normalparens #1%
        !          2201: \interlinepenalty=10000
        !          2202: \endgraf\penalty 10000\vskip -\parskip\penalty 10000}
        !          2203: 
        !          2204: % @defvr Counter foo-count
        !          2205: 
        !          2206: \def\defvr{\defmethparsebody\Edefvr\defvrx\defvrheader}
        !          2207: 
        !          2208: \def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
        !          2209: \begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
        !          2210: 
        !          2211: % @defvar == @defvr Variable
        !          2212: 
        !          2213: \def\defvar{\defparsebody\Edefvar\defvarx\defvarheader}
        !          2214: 
        !          2215: \def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
        !          2216: \begingroup\defname {#1}{Variable}%
        !          2217: \defvarargs {#2}\endgroup %
        !          2218: }
        !          2219: 
        !          2220: % @defopt == @defvr {User Option}
        !          2221: 
        !          2222: \def\defopt{\defparsebody\Edefopt\defoptx\defoptheader}
        !          2223: 
        !          2224: \def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
        !          2225: \begingroup\defname {#1}{User Option}%
        !          2226: \defvarargs {#2}\endgroup %
        !          2227: }
        !          2228: 
        !          2229: % @deftypevar int foobar
        !          2230: 
        !          2231: \def\deftypevar{\defparsebody\Edeftypevar\deftypevarx\deftypevarheader}
        !          2232: 
        !          2233: % #1 is the data type.  #2 is the name.
        !          2234: \def\deftypevarheader #1#2{\doind {vr}{\code{#2}}% Make entry in variables index
        !          2235: \begingroup\defname {\code{#1} #2}{Variable}%
        !          2236: \interlinepenalty=10000
        !          2237: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
        !          2238: \endgroup}
        !          2239: 
        !          2240: % @deftypevr {Global Flag} int enable
        !          2241: 
        !          2242: \def\deftypevr{\defmethparsebody\Edeftypevr\deftypevrx\deftypevrheader}
        !          2243: 
        !          2244: \def\deftypevrheader #1#2#3{\doind {vr}{\code{#3}}%
        !          2245: \begingroup\defname {\code{#2} #3}{#1}
        !          2246: \interlinepenalty=10000
        !          2247: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
        !          2248: \endgroup}
        !          2249: 
        !          2250: % This definition is run if you use @defvarx
        !          2251: % anywhere other than immediately after a @defvar or @defvarx.
        !          2252: 
        !          2253: \def\defvrx #1 {\errmessage{@defvrx in invalid context}}
        !          2254: \def\defvarx #1 {\errmessage{@defvarx in invalid context}}
        !          2255: \def\defoptx #1 {\errmessage{@defoptx in invalid context}}
        !          2256: \def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
        !          2257: \def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
        !          2258: 
        !          2259: % Now define @deftp
        !          2260: % Args are printed in bold, a slight difference from @defvar.
        !          2261: 
        !          2262: \def\deftpargs #1{\bf \defvarargs{#1}}
        !          2263: 
        !          2264: % @deftp Class window height width ...
        !          2265: 
        !          2266: \def\deftp{\defmethparsebody\Edeftp\deftpx\deftpheader}
        !          2267: 
        !          2268: \def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
        !          2269: \begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
        !          2270: 
        !          2271: % This definition is run if you use @deftpx, etc
        !          2272: % anywhere other than immediately after a @deftp, etc.
        !          2273: 
        !          2274: \def\deftpx #1 {\errmessage{@deftpx in invalid context}}
        !          2275: 
        !          2276: \message{cross reference,}
        !          2277: % Define cross-reference macros
        !          2278: \newwrite \auxfile
        !          2279: 
        !          2280: \newif\ifhavexrefs  % True if xref values are known.
        !          2281: \newif\ifwarnedxrefs  % True if we warned once that they aren't known.
        !          2282: 
        !          2283: % \setref{foo} defines a cross-reference point named foo.
        !          2284: 
        !          2285: \def\setref#1{%
        !          2286: \dosetq{#1-title}{Ytitle}%
        !          2287: \dosetq{#1-pg}{Ypagenumber}%
        !          2288: \dosetq{#1-snt}{Ysectionnumberandtype}}
        !          2289: 
        !          2290: \def\unnumbsetref#1{%
        !          2291: \dosetq{#1-title}{Ytitle}%
        !          2292: \dosetq{#1-pg}{Ypagenumber}%
        !          2293: \dosetq{#1-snt}{Ynothing}}
        !          2294: 
        !          2295: \def\appendixsetref#1{%
        !          2296: \dosetq{#1-title}{Ytitle}%
        !          2297: \dosetq{#1-pg}{Ypagenumber}%
        !          2298: \dosetq{#1-snt}{Yappendixletterandtype}}
        !          2299: 
        !          2300: % \xref, \pxref, and \ref generate cross-references to specified points.
        !          2301: % For \xrefX, #1 is the node name, #2 the name of the Info
        !          2302: % cross-reference, #3 the printed node name, #4 the name of the Info
        !          2303: % file, #5 the name of the printed manual.  All but the node name can be
        !          2304: % omitted.
        !          2305: % 
        !          2306: \def\pxref#1{see \xrefX[#1,,,,,,,]}
        !          2307: \def\xref#1{See \xrefX[#1,,,,,,,]}
        !          2308: \def\ref#1{\xrefX[#1,,,,,,,]}
        !          2309: \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup%
        !          2310: \def\printedmanual{\ignorespaces #5}%
        !          2311: \def\printednodename{\ignorespaces #3}%
        !          2312: %
        !          2313: \setbox1=\hbox{\i{\printedmanual}}%
        !          2314: \setbox0=\hbox{\printednodename}%
        !          2315: \ifdim \wd0=0pt%
        !          2316: \def\printednodename{\ignorespaces #1}%
        !          2317: %%% Uncommment the following line to make the actual chapter or section title
        !          2318: %%% appear inside the square brackets.
        !          2319: %\def\printednodename{#1-title}%
        !          2320: \fi%
        !          2321: %
        !          2322: %
        !          2323: % If we use \unhbox0 and \unhbox1 to print the node names, TeX does
        !          2324: % not insert empty discretionaries after hyphens, which means that it
        !          2325: % will not find a line break at a hyphen in a node names.  Since some
        !          2326: % manuals are best written with fairly long node names, containing
        !          2327: % hyphens, this is a loss.  Therefore, we simply give the text of
        !          2328: % the node name again, so it is as if TeX is seeing it for the first
        !          2329: % time.
        !          2330: \ifdim \wd1>0pt
        !          2331: section `\printednodename' in \printedmanual
        !          2332: \else%
        !          2333: \turnoffactive%
        !          2334: \refx{#1-snt}{} [\printednodename], page\tie\refx{#1-pg}{}%
        !          2335: \fi
        !          2336: \endgroup}
        !          2337: 
        !          2338: % \dosetq is the interface for calls from other macros
        !          2339: 
        !          2340: % Use \turnoffactive so that punctuation chars such as underscore
        !          2341: % work in node names.
        !          2342: \def\dosetq #1#2{{\let\folio=0 \turnoffactive%
        !          2343: \edef\next{\write\auxfile{\internalsetq {#1}{#2}}}%
        !          2344: \next}}
        !          2345: 
        !          2346: % \internalsetq {foo}{page} expands into CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
        !          2347: % When the aux file is read, ' is the escape character
        !          2348: 
        !          2349: \def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
        !          2350: 
        !          2351: % Things to be expanded by \internalsetq
        !          2352: 
        !          2353: \def\Ypagenumber{\folio}
        !          2354: 
        !          2355: \def\Ytitle{\thischapter}
        !          2356: 
        !          2357: \def\Ynothing{}
        !          2358: 
        !          2359: \def\Ysectionnumberandtype{%
        !          2360: \ifnum\secno=0 Chapter\xreftie\the\chapno %
        !          2361: \else \ifnum \subsecno=0 Section\xreftie\the\chapno.\the\secno %
        !          2362: \else \ifnum \subsubsecno=0 %
        !          2363: Section\xreftie\the\chapno.\the\secno.\the\subsecno %
        !          2364: \else %
        !          2365: Section\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno %
        !          2366: \fi \fi \fi }
        !          2367: 
        !          2368: \def\Yappendixletterandtype{%
        !          2369: \ifnum\secno=0 Appendix\xreftie'char\the\appendixno %
        !          2370: \else \ifnum \subsecno=0 Section\xreftie'char\the\appendixno.\the\secno %
        !          2371: \else \ifnum \subsubsecno=0 %
        !          2372: Section\xreftie'char\the\appendixno.\the\secno.\the\subsecno %
        !          2373: \else %
        !          2374: Section\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno %
        !          2375: \fi \fi \fi }
        !          2376: 
        !          2377: \gdef\xreftie{'tie}
        !          2378: 
        !          2379: % Use TeX 3.0's \inputlineno to get the line number, for better error
        !          2380: % messages, but if we're using an old version of TeX, don't do anything.
        !          2381: % 
        !          2382: \ifx\inputlineno\thisisundefined
        !          2383:   \let\linenumber = \empty % Non-3.0.
        !          2384: \else
        !          2385:   \def\linenumber{\the\inputlineno:\space}
        !          2386: \fi
        !          2387: 
        !          2388: % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
        !          2389: % If its value is nonempty, SUFFIX is output afterward.
        !          2390: 
        !          2391: \def\refx#1#2{%
        !          2392:   \expandafter\ifx\csname X#1\endcsname\relax
        !          2393:     % If not defined, say something at least.
        !          2394:     $\langle$un\-de\-fined$\rangle$%
        !          2395:     \ifhavexrefs
        !          2396:       \message{\linenumber Undefined cross reference `#1'.}%
        !          2397:     \else
        !          2398:       \ifwarnedxrefs\else
        !          2399:         \global\warnedxrefstrue
        !          2400:         \message{Cross reference values unknown; you must run TeX again.}%
        !          2401:       \fi
        !          2402:     \fi
        !          2403:   \else
        !          2404:     % It's defined, so just use it.
        !          2405:     \csname X#1\endcsname
        !          2406:   \fi
        !          2407:   #2% Output the suffix in any case.
        !          2408: }
        !          2409: 
        !          2410: % Read the last existing aux file, if any.  No error if none exists.
        !          2411: 
        !          2412: % This is the macro invoked by entries in the aux file.
        !          2413: \def\xrdef #1#2{
        !          2414: {\catcode`\'=\other\expandafter \gdef \csname X#1\endcsname {#2}}}
        !          2415: 
        !          2416: \def\readauxfile{%
        !          2417: \begingroup
        !          2418: \catcode `\^^@=\other
        !          2419: \catcode `\&=\other
        !          2420: \catcode `\=\other
        !          2421: \catcode `\^^C=\other
        !          2422: \catcode `\^^D=\other
        !          2423: \catcode `\^^E=\other
        !          2424: \catcode `\^^F=\other
        !          2425: \catcode `\^^G=\other
        !          2426: \catcode `\^^H=\other
        !          2427: \catcode `\=\other
        !          2428: \catcode `\^^L=\other
        !          2429: \catcode `\=\other
        !          2430: \catcode `\=\other
        !          2431: \catcode `\=\other
        !          2432: \catcode `\=\other
        !          2433: \catcode `\=\other
        !          2434: \catcode `\=\other
        !          2435: \catcode `\=\other
        !          2436: \catcode `\=\other
        !          2437: \catcode `\=\other
        !          2438: \catcode `\=\other
        !          2439: \catcode `\=\other
        !          2440: \catcode `\=\other
        !          2441: \catcode `\=\other
        !          2442: \catcode `\^^[=\other
        !          2443: \catcode `\^^\=\other
        !          2444: \catcode `\^^]=\other
        !          2445: \catcode `\^^^=\other
        !          2446: \catcode `\^^_=\other
        !          2447: \catcode `\@=\other
        !          2448: \catcode `\^=\other
        !          2449: \catcode `\~=\other
        !          2450: \catcode `\[=\other
        !          2451: \catcode `\]=\other
        !          2452: \catcode`\"=\other
        !          2453: \catcode`\_=\other
        !          2454: \catcode`\|=\other
        !          2455: \catcode`\<=\other
        !          2456: \catcode`\>=\other
        !          2457: \catcode `\$=\other
        !          2458: \catcode `\#=\other
        !          2459: \catcode `\&=\other
        !          2460: % the aux file uses ' as the escape.
        !          2461: % Turn off \ as an escape so we do not lose on
        !          2462: % entries which were dumped with control sequences in their names.
        !          2463: % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
        !          2464: % Reference to such entries still does not work the way one would wish,
        !          2465: % but at least they do not bomb out when the aux file is read in.
        !          2466: \catcode `\{=1 \catcode `\}=2
        !          2467: \catcode `\%=\other
        !          2468: \catcode `\'=0
        !          2469: \catcode `\\=\other
        !          2470: \openin 1 \jobname.aux
        !          2471: \ifeof 1 \else \closein 1 \input \jobname.aux \global\havexrefstrue
        !          2472: \fi
        !          2473: % Open the new aux file.  Tex will close it automatically at exit.
        !          2474: \openout \auxfile=\jobname.aux
        !          2475: \endgroup}
        !          2476: 
        !          2477: 
        !          2478: % Footnotes.
        !          2479: 
        !          2480: \newcount \footnoteno
        !          2481: 
        !          2482: \def\supereject{\par\penalty -20000\footnoteno =0 }
        !          2483: 
        !          2484: \let\ptexfootnote=\footnote
        !          2485: 
        !          2486: {\catcode `\@=11
        !          2487: \long\gdef\footnote #1{\global\advance \footnoteno by \@ne
        !          2488: \edef\thisfootno{$^{\the\footnoteno}$}%
        !          2489: \let\@sf\empty
        !          2490: \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
        !          2491: \thisfootno\@sf \footnotezzz{#1}}
        !          2492: % \parsearg\footnotezzz}
        !          2493: 
        !          2494: \long\gdef\footnotezzz #1{\insert\footins{
        !          2495: \interlinepenalty\interfootnotelinepenalty
        !          2496: \splittopskip\ht\strutbox % top baseline for broken footnotes
        !          2497: \splitmaxdepth\dp\strutbox \floatingpenalty\@MM
        !          2498: \leftskip\z@skip \rightskip\z@skip \spaceskip\z@skip \xspaceskip\z@skip
        !          2499: \footstrut\hang\textindent{\thisfootno}#1\strut}}
        !          2500: 
        !          2501: }%end \catcode `\@=11
        !          2502: 
        !          2503: % End of control word definitions.
        !          2504: 
        !          2505: \message{and turning on texinfo input format.}
        !          2506: 
        !          2507: \def\openindices{%
        !          2508:    \newindex{cp}%
        !          2509:    \newcodeindex{fn}%
        !          2510:    \newcodeindex{vr}%
        !          2511:    \newcodeindex{tp}%
        !          2512:    \newcodeindex{ky}%
        !          2513:    \newcodeindex{pg}%
        !          2514: }
        !          2515: 
        !          2516: % Set some numeric style parameters, for 8.5 x 11 format.
        !          2517: 
        !          2518: %\hsize = 6.5in
        !          2519: \parindent 15pt
        !          2520: \parskip 18pt plus 1pt
        !          2521: \baselineskip 15pt
        !          2522: \advance\topskip by 1.2cm
        !          2523: 
        !          2524: % Prevent underfull vbox error messages.
        !          2525: \vbadness=10000
        !          2526: 
        !          2527: % Use @smallbook to reset parameters for 7x9.5 format
        !          2528: \def\smallbook{
        !          2529: \global\lispnarrowing = 0.3in
        !          2530: \global\baselineskip 12pt
        !          2531: \global\parskip 3pt plus 1pt
        !          2532: \global\hsize = 5in
        !          2533: \global\doublecolumnhsize=2.4in \global\doublecolumnvsize=15.0in
        !          2534: \global\vsize=7.5in
        !          2535: \global\tolerance=700
        !          2536: \global\hfuzz=1pt
        !          2537: 
        !          2538: \global\pagewidth=\hsize
        !          2539: \global\pageheight=\vsize
        !          2540: 
        !          2541: \global\let\smalllisp=\smalllispx
        !          2542: \global\let\smallexample=\smalllispx
        !          2543: \global\def\Esmallexample{\Esmalllisp}
        !          2544: }
        !          2545: 
        !          2546: %% For a final copy, take out the rectangles
        !          2547: %% that mark overfull boxes (in case you have decided
        !          2548: %% that the text looks ok even though it passes the margin).
        !          2549: \def\finalout{\overfullrule=0pt}
        !          2550: 
        !          2551: % Define macros to output various characters with catcode for normal text.
        !          2552: \catcode`\"=\other
        !          2553: \catcode`\~=\other
        !          2554: \catcode`\^=\other
        !          2555: \catcode`\_=\other
        !          2556: \catcode`\|=\other
        !          2557: \catcode`\<=\other
        !          2558: \catcode`\>=\other
        !          2559: \catcode`\+=\other
        !          2560: \def\normaldoublequote{"}
        !          2561: \def\normaltilde{~}
        !          2562: \def\normalcaret{^}
        !          2563: \def\normalunderscore{_}
        !          2564: \def\normalverticalbar{|}
        !          2565: \def\normalless{<}
        !          2566: \def\normalgreater{>}
        !          2567: \def\normalplus{+}
        !          2568: 
        !          2569: % This macro is used to make a character print one way in ttfont
        !          2570: % where it can probably just be output, and another way in other fonts,
        !          2571: % where something hairier probably needs to be done.
        !          2572: %
        !          2573: % #1 is what to print if we are indeed using \tt; #2 is what to print
        !          2574: % otherwise.  Since all the Computer Modern typewriter fonts have zero
        !          2575: % interword stretch (and shrink), and it is reasonable to expect all
        !          2576: % typewriter fonts to have this, we can check that font parameter.
        !          2577: % 
        !          2578: \def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
        !          2579: 
        !          2580: % Turn off all special characters except @
        !          2581: % (and those which the user can use as if they were ordinary).
        !          2582: % Most of these we simply print from the \tt font, but for some, we can
        !          2583: % use math or other variants that look better in normal text.
        !          2584: 
        !          2585: \catcode`\"=\active
        !          2586: \def\activedoublequote{{\tt \char '042}}
        !          2587: \let"=\activedoublequote
        !          2588: \catcode`\~=\active
        !          2589: \def~{{\tt \char '176}}
        !          2590: \chardef\hat=`\^
        !          2591: \catcode`\^=\active
        !          2592: \def^{{\tt \hat}}
        !          2593: 
        !          2594: \catcode`\_=\active
        !          2595: \def_{\ifusingtt\normalunderscore\_}
        !          2596: % Subroutine for the previous macro.
        !          2597: \def\_{\leavevmode \kern.06em \vbox{\hrule width.3em height.1ex}}
        !          2598: 
        !          2599: \catcode`\|=\active
        !          2600: \def|{{\tt \char '174}}
        !          2601: \chardef \less=`\<
        !          2602: \catcode`\<=\active
        !          2603: \def<{{\tt \less}}
        !          2604: \chardef \gtr=`\>
        !          2605: \catcode`\>=\active
        !          2606: \def>{{\tt \gtr}}
        !          2607: \catcode`\+=\active
        !          2608: \def+{{\tt \char 43}}
        !          2609: %\catcode 27=\active
        !          2610: %\def^^[{$\diamondsuit$}
        !          2611: 
        !          2612: % Used sometimes to turn off (effectively) the active characters
        !          2613: % even after parsing them.
        !          2614: \def\turnoffactive{\let"=\normaldoublequote
        !          2615: \let~=\normaltilde
        !          2616: \let^=\normalcaret
        !          2617: \let_=\normalunderscore
        !          2618: \let|=\normalverticalbar
        !          2619: \let<=\normalless
        !          2620: \let>=\normalgreater
        !          2621: \let+=\normalplus}
        !          2622: 
        !          2623: % Set up an active definition for =, but don't enable it most of the time.
        !          2624: {\catcode`\==\active
        !          2625: \global\def={{\tt \char 61}}}
        !          2626: 
        !          2627: \catcode`\@=0
        !          2628: 
        !          2629: % \rawbackslashxx output one backslash character in current font
        !          2630: \global\chardef\rawbackslashxx=`\\
        !          2631: %{\catcode`\\=\other
        !          2632: %@gdef@rawbackslashxx{\}}
        !          2633: 
        !          2634: % \rawbackslash redefines \ as input to do \rawbackslashxx.
        !          2635: {\catcode`\\=\active
        !          2636: @gdef@rawbackslash{@let\=@rawbackslashxx }}
        !          2637: 
        !          2638: % \normalbackslash outputs one backslash in fixed width font.
        !          2639: \def\normalbackslash{{\tt\rawbackslashxx}}
        !          2640: 
        !          2641: % Say @foo, not \foo, in error messages.
        !          2642: \escapechar=`\@
        !          2643: 
        !          2644: % \catcode 17=0   % Define control-q
        !          2645: \catcode`\\=\active
        !          2646: 
        !          2647: % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
        !          2648: % That is what \eatinput is for; after that, the `\' should revert to printing 
        !          2649: % a backslash.
        !          2650: %
        !          2651: @gdef@eatinput input texinfo{@fixbackslash}
        !          2652: @global@let\ = @eatinput
        !          2653: 
        !          2654: % On the other hand, perhaps the file did not have a `\input texinfo'. Then
        !          2655: % the first `\{ in the file would cause an error. This macro tries to fix 
        !          2656: % that, assuming it is called before the first `\' could plausibly occur.
        !          2657: % 
        !          2658: @gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi}
        !          2659: 
        !          2660: %% These look ok in all fonts, so just make them not special.  The @rm below
        !          2661: %% makes sure that the current font starts out as the newly loaded cmr10
        !          2662: @catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
        !          2663: 
        !          2664: @textfonts
        !          2665: @rm

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