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Annotation of OpenXM/src/asir-doc/jtexinfo.tex, Revision 1.1

1.1     ! noro        1: %% TeX macros to handle texinfo files
        !             2:
        !             3: %   Copyright (C) 1985, 1986, 1988, 1990, 1991 Free Software Foundation, Inc.
        !             4:
        !             5: %This texinfo.tex file is free software; you can redistribute it and/or
        !             6: %modify it under the terms of the GNU General Public License as
        !             7: %published by the Free Software Foundation; either version 2, or (at
        !             8: %your option) any later version.
        !             9:
        !            10: %This texinfo.tex file is distributed in the hope that it will be
        !            11: %useful, but WITHOUT ANY WARRANTY; without even the implied warranty
        !            12: %of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            13: %General Public License for more details.
        !            14:
        !            15: %You should have received a copy of the GNU General Public License
        !            16: %along with this texinfo.tex file; see the file COPYING.  If not, write
        !            17: %to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
        !            18: %USA.
        !            19:
        !            20:
        !            21: %In other words, you are welcome to use, share and improve this program.
        !            22: %You are forbidden to forbid anyone else to use, share and improve
        !            23: %what you give them.   Help stamp out software-hoarding!
        !            24:
        !            25: \def\texinfoversion{2.72}
        !            26: \message{Loading texinfo package [Version \texinfoversion]:}
        !            27: \message{}
        !            28:
        !            29: %************************************************
        !            30: % Patch for ASCII/NTT Jtexinfo by ntp@isl.mei.co.jp, kusumi@isl.mei.co.jp
        !            31: % Original patch for NTT Jtexinfo by S. Tomura
        !            32: %************************************************
        !            33:
        !            34: \newif\ifisJTeX
        !            35: \newif\ifisASCII
        !            36:
        !            37: \expandafter\ifx\csname gtfam\endcsname\relax
        !            38:   % not ASCIITeX
        !            39:   \expandafter\ifx\csname jfont\endcsname\relax
        !            40:     % nor NTTTeX
        !            41:     \isJTeXfalse
        !            42:   \else
        !            43:     \isJTeXtrue
        !            44:     \isASCIIfalse
        !            45:   \fi
        !            46: \else
        !            47:   \isJTeXtrue
        !            48:   \isASCIItrue
        !            49: \fi
        !            50:
        !            51: \ifisJTeX
        !            52:   \def\ASCJtexinfoversion{j1.05}
        !            53:   \message{  with ASCII/NTT jtexinfo extension [Version \ASCJtexinfoversion]:}
        !            54:   \ifisASCII
        !            55:     \message{Hmm, Your Japanese-TeX seems to be an ASCII version. Loading.}
        !            56:   \else
        !            57:     \message{Hmm, Your Japanese-TeX seems to be an NTT version. Loading.}
        !            58:   \fi
        !            59: \fi
        !            60:
        !            61:
        !            62: % Print the version number if in a .fmt file.
        !            63: \everyjob{\message{[Texinfo version \texinfoversion]}\message{}}
        !            64:
        !            65: % Save some parts of plain tex whose names we will redefine.
        !            66:
        !            67: \let\ptexlbrace=\{
        !            68: \let\ptexrbrace=\}
        !            69: \let\ptexdots=\dots
        !            70: \let\ptexdot=\.
        !            71: \let\ptexstar=\*
        !            72: \let\ptexend=\end
        !            73: \let\ptexbullet=\bullet
        !            74: \let\ptexb=\b
        !            75: \let\ptexc=\c
        !            76: \let\ptexi=\i
        !            77: \let\ptext=\t
        !            78: \let\ptexl=\l
        !            79: \let\ptexL=\L
        !            80:
        !            81: \def\tie{\penalty 10000\ }     % Save plain tex definition of ~.
        !            82:
        !            83: \message{Basics,}
        !            84: \chardef\other=12
        !            85:
        !            86: % If this character appears in an error message or help string, it
        !            87: % starts a new line in the output.
        !            88: \newlinechar = `^^J
        !            89:
        !            90: \hyphenation{ap-pen-dix}
        !            91: \hyphenation{mini-buf-fer mini-buf-fers}
        !            92: \hyphenation{eshell}
        !            93:
        !            94: % Margin to add to right of even pages, to left of odd pages.
        !            95: \newdimen \bindingoffset  \bindingoffset=0pt
        !            96: \newdimen \normaloffset   \normaloffset=\hoffset
        !            97: \newdimen\pagewidth \newdimen\pageheight
        !            98: \pagewidth=\hsize \pageheight=\vsize
        !            99:
        !           100: % Sometimes it is convenient to have everything in the transcript file
        !           101: % and nothing on the terminal.  We don't just call \tracingall here,
        !           102: % since that produces some useless output on the terminal.
        !           103: %
        !           104: \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
        !           105: \def\loggingall{\tracingcommands2 \tracingstats2
        !           106:    \tracingpages1 \tracingoutput1 \tracinglostchars1
        !           107:    \tracingmacros2 \tracingparagraphs1 \tracingrestores1
        !           108:    \showboxbreadth\maxdimen\showboxdepth\maxdimen
        !           109: }%
        !           110:
        !           111: %---------------------Begin change-----------------------
        !           112: %
        !           113: %%%% For @cropmarks command.
        !           114: % Dimensions to add cropmarks at corners Added by P. A. MacKay, 12 Nov. 1986
        !           115: %
        !           116: \newdimen\cornerlong \newdimen\cornerthick
        !           117: \newdimen \topandbottommargin
        !           118: \newdimen \outerhsize \newdimen \outervsize
        !           119: \cornerlong=1pc\cornerthick=.3pt       % These set size of cropmarks
        !           120: \outerhsize=7in
        !           121: %\outervsize=9.5in
        !           122: % Alternative @smallbook page size is 9.25in
        !           123: \outervsize=9.25in
        !           124: \topandbottommargin=.75in
        !           125: %
        !           126: %---------------------End change-----------------------
        !           127:
        !           128: % \onepageout takes a vbox as an argument.  Note that \pagecontents
        !           129: % does insertions itself, but you have to call it yourself.
        !           130: \chardef\PAGE=255  \output={\onepageout{\pagecontents\PAGE}}
        !           131: \def\onepageout#1{\hoffset=\normaloffset
        !           132: \ifodd\pageno  \advance\hoffset by \bindingoffset
        !           133: \else \advance\hoffset by -\bindingoffset\fi
        !           134: {\escapechar=`\\\relax % makes sure backslash is used in output files.
        !           135: \shipout\vbox{{\let\hsize=\pagewidth \makeheadline} \pagebody{#1}%
        !           136: {\let\hsize=\pagewidth \makefootline}}}%
        !           137: \advancepageno \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
        !           138:
        !           139: %%%% For @cropmarks command %%%%
        !           140:
        !           141: % Here is a modification of the main output routine for Near East Publications
        !           142: % This provides right-angle cropmarks at all four corners.
        !           143: % The contents of the page are centerlined into the cropmarks,
        !           144: % and any desired binding offset is added as an \hskip on either
        !           145: % site of the centerlined box.  (P. A. MacKay, 12 November, 1986)
        !           146: %
        !           147: \def\croppageout#1{\hoffset=0pt % make sure this doesn't mess things up
        !           148:                 \shipout
        !           149:                 \vbox to \outervsize{\hsize=\outerhsize
        !           150:                  \vbox{\line{\ewtop\hfill\ewtop}}
        !           151:                  \nointerlineskip
        !           152:                  \line{\vbox{\moveleft\cornerthick\nstop}
        !           153:                        \hfill
        !           154:                        \vbox{\moveright\cornerthick\nstop}}
        !           155:                  \vskip \topandbottommargin
        !           156:                  \centerline{\ifodd\pageno\hskip\bindingoffset\fi
        !           157:                        \vbox{
        !           158:                        {\let\hsize=\pagewidth \makeheadline}
        !           159:                        \pagebody{#1}
        !           160:                        {\let\hsize=\pagewidth \makefootline}}
        !           161:                        \ifodd\pageno\else\hskip\bindingoffset\fi}
        !           162:                 \vskip \topandbottommargin plus1fill minus1fill
        !           163:                  \boxmaxdepth\cornerthick
        !           164:                  \line{\vbox{\moveleft\cornerthick\nsbot}
        !           165:                        \hfill
        !           166:                        \vbox{\moveright\cornerthick\nsbot}}
        !           167:                  \nointerlineskip
        !           168:                  \vbox{\line{\ewbot\hfill\ewbot}}
        !           169:        }
        !           170:   \advancepageno
        !           171:   \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
        !           172: %
        !           173: % Do @cropmarks to get crop marks
        !           174: \def\cropmarks{\let\onepageout=\croppageout }
        !           175:
        !           176: \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
        !           177: {\catcode`\@ =11
        !           178: \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
        !           179: \dimen@=\dp#1 \unvbox#1
        !           180: \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
        !           181: \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
        !           182: }
        !           183:
        !           184: %
        !           185: % Here are the rules for the cropmarks.  Note that they are
        !           186: % offset so that the space between them is truly \outerhsize or \outervsize
        !           187: % (P. A. MacKay, 12 November, 1986)
        !           188: %
        !           189: \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
        !           190: \def\nstop{\vbox
        !           191:   {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
        !           192: \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
        !           193: \def\nsbot{\vbox
        !           194:   {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
        !           195:
        !           196: % Parse an argument, then pass it to #1.
        !           197: % The argument can be delimited with [...] or with "..." or braces
        !           198: % or it can be a whole line.
        !           199: % #1 should be a macro which expects
        !           200: % an ordinary undelimited TeX argument.
        !           201:
        !           202: \def\parsearg #1{\let\next=#1\begingroup\obeylines\futurelet\temp\parseargx}
        !           203:
        !           204: \def\parseargx{%
        !           205: \ifx \obeyedspace\temp \aftergroup\parseargdiscardspace \else%
        !           206: \aftergroup \parseargline %
        !           207: \fi \endgroup}
        !           208:
        !           209: {\obeyspaces %
        !           210: \gdef\parseargdiscardspace {\begingroup\obeylines\futurelet\temp\parseargx}}
        !           211:
        !           212: \gdef\obeyedspace{\ }
        !           213:
        !           214: \def\parseargline{\begingroup \obeylines \parsearglinex}
        !           215: {\obeylines %
        !           216: \gdef\parsearglinex #1^^M{\endgroup \next {#1}}}
        !           217:
        !           218: \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
        !           219:
        !           220: %% These are used to keep @begin/@end levels from running away
        !           221: %% Call \inENV within environments (after a \begingroup)
        !           222: \newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
        !           223: \def\ENVcheck{%
        !           224: \ifENV\errmessage{Still within an environment.  Type Return to continue.}
        !           225: \endgroup\fi} % This is not perfect, but it should reduce lossage
        !           226:
        !           227: % @begin foo  is the same as @foo, for now.
        !           228: \newhelp\EMsimple{Type <Return> to continue}
        !           229:
        !           230: \outer\def\begin{\parsearg\beginxxx}
        !           231:
        !           232: \def\beginxxx #1{%
        !           233: \expandafter\ifx\csname #1\endcsname\relax
        !           234: {\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
        !           235: \csname #1\endcsname\fi}
        !           236:
        !           237: %% @end foo executes the definition of \Efoo.
        !           238: %% foo can be delimited by doublequotes or brackets.
        !           239:
        !           240: \def\end{\parsearg\endxxx}
        !           241:
        !           242: \def\endxxx #1{%
        !           243: \expandafter\ifx\csname E#1\endcsname\relax
        !           244: \expandafter\ifx\csname #1\endcsname\relax
        !           245: \errmessage{Undefined command @end #1}\else
        !           246: \errorE{#1}\fi\fi
        !           247: \csname E#1\endcsname}
        !           248: \def\errorE#1{
        !           249: {\errhelp=\EMsimple \errmessage{@end #1 not within #1 environment}}}
        !           250:
        !           251: % Single-spacing is done by various environments.
        !           252:
        !           253: \newskip\singlespaceskip \singlespaceskip = \baselineskip
        !           254: \def\singlespace{%
        !           255: {\advance \baselineskip by -\singlespaceskip
        !           256: \kern \baselineskip}%
        !           257: \baselineskip=\singlespaceskip
        !           258: }
        !           259:
        !           260: %% Simple single-character @ commands
        !           261:
        !           262: % @@ prints an @
        !           263: % Kludge this until the fonts are right (grr).
        !           264: \def\@{{\tt \char '100}}
        !           265:
        !           266: % Define @` and @' to be the same as ` and '
        !           267: % but suppressing ligatures.
        !           268: \def\`{{`}}
        !           269: \def\'{{'}}
        !           270:
        !           271: % Used to generate quoted braces.
        !           272:
        !           273: \def\mylbrace {{\tt \char '173}}
        !           274: \def\myrbrace {{\tt \char '175}}
        !           275: \let\{=\mylbrace
        !           276: \let\}=\myrbrace
        !           277:
        !           278: % @: forces normal size whitespace following.
        !           279: \def\:{\spacefactor=1000 }
        !           280:
        !           281: % @* forces a line break.
        !           282: \def\*{\hfil\break\hbox{}\ignorespaces}
        !           283:
        !           284: % @. is an end-of-sentence period.
        !           285: \def\.{.\spacefactor=3000 }
        !           286:
        !           287: % @w prevents a word break.  Without the \leavevmode, @w at the
        !           288: % beginning of a paragraph, when TeX is still in vertical mode, would
        !           289: % produce a whole line of output instead of starting the paragraph.
        !           290: \def\w#1{\leavevmode\hbox{#1}}
        !           291:
        !           292: % @group ... @end group forces ... to be all on one page, by enclosing
        !           293: % it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
        !           294: % to keep its height that of a normal line.  According to the rules for
        !           295: % \topskip (p.114 of the TeXbook), the glue inserted is
        !           296: % max (\topskip - \ht (first item), 0).  If that height is large,
        !           297: % therefore, no glue is inserted, and the space between the headline and
        !           298: % the text is small, which looks bad.
        !           299: %
        !           300: \def\group{\begingroup
        !           301:   \ifnum\catcode13=\active \else
        !           302:     \errhelp = \groupinvalidhelp
        !           303:     \errmessage{@group invalid in context where filling is enabled}%
        !           304:   \fi
        !           305:   \def\Egroup{\egroup\endgroup}%
        !           306:   \vtop\bgroup
        !           307: }
        !           308: %
        !           309: % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
        !           310: % message, so this ends up printing `@group can only ...'.
        !           311: %
        !           312: \newhelp\groupinvalidhelp{%
        !           313: group can only be used in environments such as @example,^^J%
        !           314: where each line of input produces a line of output.}
        !           315:
        !           316: % @need space-in-mils
        !           317: % forces a page break if there is not space-in-mils remaining.
        !           318:
        !           319: \newdimen\mil  \mil=0.001in
        !           320:
        !           321: \def\need{\parsearg\needx}
        !           322:
        !           323: % Old definition--didn't work.
        !           324: %\def\needx #1{\par %
        !           325: %% This method tries to make TeX break the page naturally
        !           326: %% if the depth of the box does not fit.
        !           327: %{\baselineskip=0pt%
        !           328: %\vtop to #1\mil{\vfil}\kern -#1\mil\penalty 10000
        !           329: %\prevdepth=-1000pt
        !           330: %}}
        !           331:
        !           332: \def\needx#1{%
        !           333:   % Go into vertical mode, so we don't make a big box in the middle of a
        !           334:   % paragraph.
        !           335:   \par
        !           336:   %
        !           337:   % Don't add any leading before our big empty box, but allow a page
        !           338:   % break, since the best break might be right here.
        !           339:   \allowbreak
        !           340:   \nointerlineskip
        !           341:   \vtop to #1\mil{\vfil}%
        !           342:   %
        !           343:   % TeX does not even consider page breaks if a penalty added to the
        !           344:   % main vertical list is 10000 or more.  But in order to see if the
        !           345:   % empty box we just added fits on the page, we must make it consider
        !           346:   % page breaks.  On the other hand, we don't want to actually break the
        !           347:   % page after the empty box.  So we use a penalty of 9999.
        !           348:   %
        !           349:   % There is an extremely small chance that TeX will actually break the
        !           350:   % page at this \penalty, if there are no other feasible breakpoints in
        !           351:   % sight.  (If the user is using lots of big @group commands, which
        !           352:   % almost-but-not-quite fill up a page, TeX will have a hard time doing
        !           353:   % good page breaking, for example.)  However, I could not construct an
        !           354:   % example where a page broke at this \penalty; if it happens in a real
        !           355:   % document, then we can reconsider our strategy.
        !           356:   \penalty9999
        !           357:   %
        !           358:   % Back up by the size of the box, whether we did a page break or not.
        !           359:   \kern -#1\mil
        !           360:   %
        !           361:   % Do not allow a page break right after this kern.
        !           362:   \nobreak
        !           363: }
        !           364:
        !           365: % @br   forces paragraph break
        !           366:
        !           367: \let\br = \par
        !           368:
        !           369: % @dots{}  output some dots
        !           370:
        !           371: \def\dots{$\ldots$}
        !           372:
        !           373: % @page    forces the start of a new page
        !           374:
        !           375: \def\page{\par\vfill\supereject}
        !           376:
        !           377: % @exdent text....
        !           378: % outputs text on separate line in roman font, starting at standard page margin
        !           379:
        !           380: % This records the amount of indent in the innermost environment.
        !           381: % That's how much \exdent should take out.
        !           382: \newskip\exdentamount
        !           383:
        !           384: % This defn is used inside fill environments such as @defun.
        !           385: \def\exdent{\parsearg\exdentyyy}
        !           386: \def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm\mc #1}}\hfil\break}}
        !           387:
        !           388: % This defn is used inside nofill environments such as @example.
        !           389: \def\nofillexdent{\parsearg\nofillexdentyyy}
        !           390: \def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount
        !           391: \leftline{\hskip\leftskip{\rm\mc #1}}}}
        !           392:
        !           393: %\hbox{{\rm#1}}\hfil\break}}
        !           394:
        !           395: % @include file    insert text of that file as input.
        !           396:
        !           397: \def\include{\parsearg\includezzz}
        !           398: \def\includezzz #1{{\def\thisfile{#1}\input #1
        !           399: }}
        !           400:
        !           401: \def\thisfile{}
        !           402:
        !           403: % @center line   outputs that line, centered
        !           404:
        !           405: \def\center{\parsearg\centerzzz}
        !           406: \def\centerzzz #1{{\advance\hsize by -\leftskip
        !           407: \advance\hsize by -\rightskip
        !           408: \centerline{#1}}}
        !           409:
        !           410: % @sp n   outputs n lines of vertical space
        !           411:
        !           412: \def\sp{\parsearg\spxxx}
        !           413: \def\spxxx #1{\par \vskip #1\baselineskip}
        !           414:
        !           415: % @comment ...line which is ignored...
        !           416: % @c is the same as @comment
        !           417: % @ignore ... @end ignore  is another way to write a comment
        !           418:
        !           419: \def\comment{\catcode 64=\other \catcode 123=\other \catcode 125=\other%
        !           420: \parsearg \commentxxx}
        !           421:
        !           422: \def\commentxxx #1{\catcode 64=0 \catcode 123=1 \catcode 125=2 }
        !           423:
        !           424: \let\c=\comment
        !           425:
        !           426: % Prevent errors for section commands.
        !           427: % Used in @ignore and in failing conditionals.
        !           428: \def\ignoresections{%
        !           429: \let\chapter=\relax
        !           430: \let\unnumbered=\relax
        !           431: \let\top=\relax
        !           432: \let\unnumberedsec=\relax
        !           433: \let\unnumberedsection=\relax
        !           434: \let\unnumberedsubsec=\relax
        !           435: \let\unnumberedsubsection=\relax
        !           436: \let\unnumberedsubsubsec=\relax
        !           437: \let\unnumberedsubsubsection=\relax
        !           438: \let\section=\relax
        !           439: \let\subsec=\relax
        !           440: \let\subsubsec=\relax
        !           441: \let\subsection=\relax
        !           442: \let\subsubsection=\relax
        !           443: \let\appendix=\relax
        !           444: \let\appendixsec=\relax
        !           445: \let\appendixsection=\relax
        !           446: \let\appendixsubsec=\relax
        !           447: \let\appendixsubsection=\relax
        !           448: \let\appendixsubsubsec=\relax
        !           449: \let\appendixsubsubsection=\relax
        !           450: \let\contents=\relax
        !           451: \let\smallbook=\relax
        !           452: \let\titlepage=\relax
        !           453: }
        !           454:
        !           455: \def\ignore{\begingroup\ignoresections
        !           456: % Make sure that spaces turn into tokens that match what \ignorexxx wants.
        !           457: \catcode32=10
        !           458: \ignorexxx}
        !           459: \long\def\ignorexxx #1\end ignore{\endgroup\ignorespaces}
        !           460:
        !           461: \def\direntry{\begingroup\direntryxxx}
        !           462: \long\def\direntryxxx #1\end direntry{\endgroup\ignorespaces}
        !           463:
        !           464: % Conditionals to test whether a flag is set.
        !           465:
        !           466: \def\ifset{\begingroup\ignoresections\parsearg\ifsetxxx}
        !           467:
        !           468: \def\ifsetxxx #1{\endgroup
        !           469: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\ifsetfail
        !           470: \else \let\temp=\relax \fi
        !           471: \temp}
        !           472: \def\Eifset{}
        !           473: \def\ifsetfail{\begingroup\ignoresections\ifsetfailxxx}
        !           474: \long\def\ifsetfailxxx #1\end ifset{\endgroup\ignorespaces}
        !           475:
        !           476: \def\ifclear{\begingroup\ignoresections\parsearg\ifclearxxx}
        !           477:
        !           478: \def\ifclearxxx #1{\endgroup
        !           479: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\relax
        !           480: \else \let\temp=\ifclearfail \fi
        !           481: \temp}
        !           482: \def\Eifclear{}
        !           483: \def\ifclearfail{\begingroup\ignoresections\ifclearfailxxx}
        !           484: \long\def\ifclearfailxxx #1\end ifclear{\endgroup\ignorespaces}
        !           485:
        !           486: % @set foo     to set the flag named foo.
        !           487: % @clear foo   to clear the flag named foo.
        !           488: \def\set{\parsearg\setxxx}
        !           489: \def\setxxx #1{
        !           490: \expandafter\let\csname IF#1\endcsname=\set}
        !           491:
        !           492: \def\clear{\parsearg\clearxxx}
        !           493: \def\clearxxx #1{
        !           494: \expandafter\let\csname IF#1\endcsname=\relax}
        !           495:
        !           496: % Some texinfo constructs that are trivial in tex
        !           497:
        !           498: \def\iftex{}
        !           499: \def\Eiftex{}
        !           500: \def\ifinfo{\begingroup\ignoresections\ifinfoxxx}
        !           501: \long\def\ifinfoxxx #1\end ifinfo{\endgroup\ignorespaces}
        !           502:
        !           503: \long\def\menu #1\end menu{}
        !           504: \def\asis#1{#1}
        !           505:
        !           506: % @math means output in math mode.
        !           507: % We don't use $'s directly in the definition of \math because control
        !           508: % sequences like \math are expanded when the toc file is written.  Then,
        !           509: % we read the toc file back, the $'s will be normal characters (as they
        !           510: % should be, according to the definition of Texinfo).  So we must use a
        !           511: % control sequence to switch into and out of math mode.
        !           512: %
        !           513: % This isn't quite enough for @math to work properly in indices, but it
        !           514: % seems unlikely it will ever be needed there.
        !           515: %
        !           516: \let\implicitmath = $
        !           517: \def\math#1{\implicitmath #1\implicitmath}
        !           518:
        !           519: % enhancements of @node by kusumi@isl.mei
        !           520: %   to treat following node correctly.(containing '[' and ']' in this order)
        !           521: %     @node $[, $], $prev, $upper
        !           522: %\def\node{\ENVcheck\parsearg\nodezzz}
        !           523: %\def\nodezzz#1{\nodexxx [#1,]}
        !           524: %\def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
        !           525: \def\node{\ENVcheck\parsearg\nodezzz}
        !           526: \def\nodezzz#1{\nodexxx#1,\relax\relax}
        !           527: \def\nodexxx#1,#2,\relax\relax{\gdef\lastnode{#1}}
        !           528: \let\lastnode=\relax
        !           529:
        !           530: \def\donoderef{\ifx\lastnode\relax\else
        !           531: \expandafter\expandafter\expandafter\setref{\lastnode}\fi
        !           532: \let\lastnode=\relax}
        !           533:
        !           534: \def\unnumbnoderef{\ifx\lastnode\relax\else
        !           535: \expandafter\expandafter\expandafter\unnumbsetref{\lastnode}\fi
        !           536: \let\lastnode=\relax}
        !           537:
        !           538: \def\appendixnoderef{\ifx\lastnode\relax\else
        !           539: \expandafter\expandafter\expandafter\appendixsetref{\lastnode}\fi
        !           540: \let\lastnode=\relax}
        !           541:
        !           542: \let\refill=\relax
        !           543:
        !           544: % @setfilename is done at the beginning of every texinfo file.
        !           545: % So open here the files we need to have open while reading the input.
        !           546: % This makes it possible to make a .fmt file for texinfo.
        !           547: \def\setfilename{%
        !           548:    \readauxfile
        !           549:    \opencontents
        !           550:    \openindices
        !           551:    \fixbackslash  % Turn off hack to swallow `\input texinfo'.
        !           552:    \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
        !           553:    \comment % Ignore the actual filename.
        !           554: }
        !           555:
        !           556: \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
        !           557:
        !           558: \def\inforef #1{\inforefzzz #1,,,,**}
        !           559: \def\inforefzzz #1,#2,#3,#4**{See Info file \file{\losespace#3{}},
        !           560:   node \samp{\losespace#1{}}}
        !           561: \def\losespace #1{#1}
        !           562:
        !           563: \message{fonts,}
        !           564:
        !           565: % Font-change commands.
        !           566:
        !           567: % Texinfo supports the sans serif font style, which plain TeX does not.
        !           568: % So we set up a \sf analogous to plain's \rm, etc.
        !           569: \newfam\sffam
        !           570: \def\sf{\fam=\sffam \tensf}
        !           571: \let\li = \sf % Sometimes we call it \li, not \sf.
        !           572:
        !           573: %**
        !           574: % For NTT TeX, define dummy font families compatible with ASCII.
        !           575: % Unfortunately, \newfam in the \if..\fi raise an error, so we should
        !           576: % redefine \newfam even with ASCII Japanese TeX.
        !           577: %
        !           578: \newfam\minfam \def\mc{\fam\minfam\tenmin}%
        !           579: \newfam\gtfam \def\gt{\fam\gtfam\tengt}%
        !           580: \ifisJTeX\else
        !           581: \let\mc=\relax
        !           582: \let\gt=\relax
        !           583: \fi
        !           584: %** by ntp@isl.mei
        !           585:
        !           586: %% Try out Computer Modern fonts at \magstephalf
        !           587: \let\mainmagstep=\magstephalf
        !           588:
        !           589: \ifx\bigger\relax
        !           590: \let\mainmagstep=\magstep1
        !           591: \font\textrm=cmr12
        !           592: \font\texttt=cmtt12
        !           593: \else
        !           594: \font\textrm=cmr10 scaled \mainmagstep
        !           595: \font\texttt=cmtt10 scaled \mainmagstep
        !           596: \fi
        !           597: % Instead of cmb10, you many want to use cmbx10.
        !           598: % cmbx10 is a prettier font on its own, but cmb10
        !           599: % looks better when embedded in a line with cmr10.
        !           600: \font\textbf=cmb10 scaled \mainmagstep
        !           601: \font\textit=cmti10 scaled \mainmagstep
        !           602: \font\textsl=cmsl10 scaled \mainmagstep
        !           603: \font\textsf=cmss10 scaled \mainmagstep
        !           604: \font\textsc=cmcsc10 scaled \mainmagstep
        !           605: \font\texti=cmmi10 scaled \mainmagstep
        !           606: \font\textsy=cmsy10 scaled \mainmagstep
        !           607: %**
        !           608: \ifisJTeX
        !           609: \ifisASCII
        !           610:   \font\textmin=min10 scaled \mainmagstep
        !           611:   \font\textgt=goth10 scaled \mainmagstep
        !           612: \else
        !           613:   \jfont\textmin=dm10 scaled \mainmagstep
        !           614:   \jfont\textgt=dg10 scaled \mainmagstep
        !           615: \fi
        !           616: \else
        !           617:   \let\textmin=\relax
        !           618:   \let\textgt=\relax
        !           619: \fi
        !           620: % ntp@isl.mei.co.jp
        !           621: %**
        !           622:
        !           623: % A few fonts for @defun, etc.
        !           624: \font\defbf=cmbx10 scaled \magstep1 %was 1314
        !           625: \font\deftt=cmtt10 scaled \magstep1
        !           626: %**
        !           627: \ifisJTeX
        !           628: \ifisASCII
        !           629:   \font\defgt=min10 scaled \magstep1
        !           630: \else
        !           631:   \jfont\defgt=dg10 scaled \magstep1
        !           632: \fi
        !           633: \else
        !           634:   \let\defgt=\relax
        !           635: \fi
        !           636: \def\df{\let\tentt=\deftt\let\tenbf=\defbf
        !           637:         \let\tengt=\defgt \bf\gt} % ntp
        !           638:
        !           639: % Fonts for indices and small examples.
        !           640: % We actually use the slanted font rather than the italic,
        !           641: % because texinfo normally uses the slanted fonts for that.
        !           642: % Do not make many font distinctions in general in the index, since they
        !           643: % aren't very useful.
        !           644: \font\ninett=cmtt9
        !           645: \font\indrm=cmr9
        !           646: \font\indit=cmsl9
        !           647: \let\indsl=\indit
        !           648: \ifisJTeX
        !           649: \ifisASCII
        !           650:   \font\indmin=min9
        !           651:   \font\indgt=goth9
        !           652: \else
        !           653:   \jfont\indmin=dm9
        !           654:   \jfont\indgt=dg9
        !           655: \fi
        !           656: \else
        !           657:   \let\indmin=\relax
        !           658:   \let\indgt=\relax
        !           659: \fi
        !           660: \let\indmc=\indmin % ntp
        !           661:
        !           662: \let\indtt=\ninett
        !           663: \let\indsf=\indrm
        !           664: \let\indbf=\indrm
        !           665: \let\indsc=\indrm
        !           666: \font\indi=cmmi9
        !           667: \font\indsy=cmsy9
        !           668:
        !           669: % Fonts for headings
        !           670: \font\chaprm=cmbx10 scaled \magstep3
        !           671: \font\chapit=cmti10 scaled \magstep3
        !           672: \font\chapsl=cmsl10 scaled \magstep3
        !           673: \font\chaptt=cmtt10 scaled \magstep3
        !           674: \font\chapsf=cmss10 scaled \magstep3
        !           675: %**
        !           676: \ifisJTeX
        !           677: \ifisASCII
        !           678:   \font\chapmin=goth10 scaled \magstep3
        !           679: \else
        !           680:   \jfont\chapmin=dg10 scaled \magstep3
        !           681: \fi
        !           682: \else
        !           683:   \let\chapmin=\relax
        !           684: \fi
        !           685: \let\chapgt=\chapmin
        !           686:
        !           687: %**
        !           688: \let\chapbf=\chaprm
        !           689: \font\chapsc=cmcsc10 scaled\magstep3
        !           690: %\font\chapi=cmmi12 scaled \magstep2
        !           691: \font\chapi=cmmi10 scaled \magstep3 % ntp
        !           692: \font\chapsy=cmsy10 scaled \magstep3
        !           693:
        !           694: \font\secrm=cmbx10 scaled \magstep2
        !           695: \font\secit=cmti10 scaled \magstep2
        !           696: \font\secsl=cmsl10 scaled \magstep2
        !           697: \font\sectt=cmtt10 scaled \magstep2
        !           698: \font\secsf=cmss10 scaled \magstep2
        !           699: \font\secbf=cmbx10 scaled \magstep2
        !           700: %**
        !           701: \ifisJTeX
        !           702: \ifisASCII
        !           703:   \font\secmin=goth10 scaled \magstep2
        !           704: \else
        !           705:   \jfont\secmin=dg10 scaled \magstep2
        !           706: \fi
        !           707: \else
        !           708:   \let\secmin=\relax
        !           709: \fi
        !           710: \let\secgt=\secmin
        !           711: %**
        !           712: \font\secsc=cmcsc10 scaled\magstep2
        !           713: %\font\seci=cmmi12 scaled \magstep1
        !           714: \font\seci=cmmi10 scaled \magstep2
        !           715: \font\secsy=cmsy10 scaled \magstep2
        !           716:
        !           717: % \font\ssecrm=cmbx10 scaled \magstep1    % This size an font looked bad.
        !           718: % \font\ssecit=cmti10 scaled \magstep1    % The letters were too crowded.
        !           719: % \font\ssecsl=cmsl10 scaled \magstep1
        !           720: % \font\ssectt=cmtt10 scaled \magstep1
        !           721: % \font\ssecsf=cmss10 scaled \magstep1
        !           722:
        !           723: %\font\ssecrm=cmb10 scaled 1315        % Note the use of cmb rather than cmbx.
        !           724: %\font\ssecit=cmti10 scaled 1315       % Also, the size is a little larger than
        !           725: %\font\ssecsl=cmsl10 scaled 1315       % being scaled magstep1.
        !           726: %\font\ssectt=cmtt10 scaled 1315
        !           727: %\font\ssecsf=cmss10 scaled 1315
        !           728:
        !           729:
        !           730: %\font\ssecrm=cmbx12 scaled \magstephalf
        !           731: %\font\ssecit=cmti12 scaled \magstephalf
        !           732: %\font\ssecsl=cmsl12 scaled \magstephalf
        !           733: %\font\ssectt=cmtt12 scaled \magstephalf
        !           734: %\font\ssecsf=cmss12 scaled \magstephalf
        !           735: \font\ssecrm=cmbx10 scaled \magstep1
        !           736: \font\ssecit=cmti10 scaled \magstep1
        !           737: \font\ssecsl=cmsl10 scaled \magstep1
        !           738: \font\ssectt=cmtt10 scaled \magstep1
        !           739: \font\ssecsf=cmss10 scaled \magstep1
        !           740: \font\ssecsc=cmcsc10 scaled \magstep1
        !           741: %\font\sseci=cmmi12 scaled \magstephalf
        !           742: \font\sseci=cmmi10 scaled \magstep1
        !           743: \font\ssecsy=cmsy10 scaled \magstep1
        !           744: %**
        !           745: \ifisJTeX
        !           746: \ifisASCII
        !           747:   \font\ssecmin=goth10 scaled \magstep1
        !           748: \else
        !           749:   \jfont\ssecmin=dg10 scaled \magstep1
        !           750: \fi
        !           751: \else
        !           752:   \let\ssecmin=\relax
        !           753: \fi
        !           754: \let\ssecgt=\ssecmin
        !           755: %**
        !           756:
        !           757: \let\ssecbf=\ssecrm
        !           758:
        !           759: % The smallcaps and symbol fonts should actually be scaled \magstep1.5,
        !           760: % but that is not a standard magnification.
        !           761:
        !           762: % Fonts for title page:
        !           763: %\font\titlerm = cmbx12 scaled \magstep3
        !           764: \font\titlerm = cmbx10 scaled \magstep4
        !           765: \ifisJTeX
        !           766: \ifisASCII
        !           767:   \font\titlemc=goth10 scaled \magstep4
        !           768: \else
        !           769:   \jfont\titlemc=dg10 scaled \magstep4
        !           770: \fi
        !           771: \else
        !           772: \let\titlemc=\relax
        !           773: \fi
        !           774: \let\authorrm = \secrm
        !           775: \ifisJTeX
        !           776:   \let\authormc=\secmin
        !           777: \else
        !           778:   \let\authormc=\relax
        !           779: \fi
        !           780:
        !           781: % In order for the font changes to affect most math symbols and letters,
        !           782: % we have to define the \textfont of the standard families.  Since
        !           783: % texinfo doesn't allow for producing subscripts and superscripts, we
        !           784: % don't bother to reset \scriptfont and \scriptscriptfont (which would
        !           785: % also require loading a lot more fonts).
        !           786: %
        !           787: \def\resetmathfonts{%
        !           788:   \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy
        !           789:   \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf
        !           790:   \textfont\ttfam = \tentt \textfont\sffam = \tensf
        !           791:   \ifisJTeX
        !           792:   \ifisASCII
        !           793:   \textfont\minfam = \tenmin \textfont\gtfam = \tengt % ntp
        !           794:   \fi
        !           795:   \fi
        !           796: }
        !           797:
        !           798:
        !           799: % The font-changing commands redefine the meanings of \tenSTYLE, instead
        !           800: % of just \STYLE.  We do this so that font changes will continue to work
        !           801: % in math mode, where it is the current \fam that is relevant in most
        !           802: % cases, not the current.  Plain TeX does, for example,
        !           803: % \def\bf{\fam=\bffam \tenbf}  By redefining \tenbf, we obviate the need
        !           804: % to redefine \bf itself.
        !           805: \def\textfonts{%
        !           806:   \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
        !           807:   \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
        !           808:   \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
        !           809:   \let\tenmin=\textmin \let\tengt=\textgt % ntp@isl.mei.co.jp
        !           810:   \resetmathfonts}
        !           811: \def\chapfonts{%
        !           812:   \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
        !           813:   \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
        !           814:   \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy
        !           815:   \let\tenmin=\chapmin \let\tengt=\chapgt % ntp@isl.mei.co.jp
        !           816:   \resetmathfonts}
        !           817: \def\secfonts{%
        !           818:   \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
        !           819:   \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
        !           820:   \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
        !           821:   \let\tenmin=\secmin \let\tengt=\secgt % ntp@isl.mei.co.jp
        !           822:   \resetmathfonts}
        !           823: \def\subsecfonts{%
        !           824:   \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
        !           825:   \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
        !           826:   \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
        !           827:   \let\tenmin=\ssecmin \let\tengt=\ssecgt % ntp@isl.mei.co.jp
        !           828:   \resetmathfonts}
        !           829: \def\indexfonts{%
        !           830:   \let\tenrm=\indrm \let\tenit=\indit \let\tensl=\indsl
        !           831:   \let\tenbf=\indbf \let\tentt=\indtt \let\smallcaps=\indsc
        !           832:   \let\tensf=\indsf \let\teni=\indi \let\tensy=\indsy
        !           833:   \let\tenmin=\indmin \let\tengt=\indgt % ntp@isl.mei.co.jp
        !           834:   \resetmathfonts}
        !           835:
        !           836: % Set up the default fonts, so we can use them for creating boxes.
        !           837: %
        !           838: \textfonts
        !           839:
        !           840: % Count depth in font-changes, for error checks
        !           841: \newcount\fontdepth \fontdepth=0
        !           842:
        !           843: % Fonts for short table of contents.
        !           844: \font\shortcontrm=cmr12
        !           845: %\font\shortcontbf=cmbx12
        !           846: %\font\shortcontsl=cmsl12
        !           847: \font\shortcontbf=cmbx10 scaled \magstephalf
        !           848: \font\shortcontsl=cmsl10 scaled \magstephalf
        !           849: %**
        !           850: \ifisJTeX
        !           851: \ifisASCII
        !           852:   \font\shortcontmc=min10
        !           853:   \font\shortcontgt=goth10
        !           854: \else
        !           855:   \jfont\shortcontmc=dm10
        !           856:   \jfont\shortcontgt=dg10
        !           857: \fi
        !           858: \else
        !           859:   \let\shortcontmc=\relax
        !           860:   \let\shortcontgt=\relax
        !           861: \fi
        !           862: %**
        !           863: %% Add scribe-like font environments, plus @l for inline lisp (usually sans
        !           864: %% serif) and @ii for TeX italic
        !           865:
        !           866: % \smartitalic{ARG} outputs arg in italics, followed by an italic correction
        !           867: % unless the following character is such as not to need one.
        !           868: \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
        !           869: \def\smartitalic#1{{\sl #1}\futurelet\next\smartitalicx}
        !           870:
        !           871: \let\i=\smartitalic
        !           872: \let\var=\smartitalic
        !           873: \let\dfn=\smartitalic
        !           874: \let\emph=\smartitalic
        !           875: \let\cite=\smartitalic
        !           876:
        !           877: \def\b#1{{\bf #1}}
        !           878: \let\strong=\b
        !           879:
        !           880: \def\t#1{{\tt \exhyphenpenalty=10000\rawbackslash \frenchspacing #1}\null}
        !           881: \let\ttfont = \t
        !           882: %\def\samp #1{`{\tt \rawbackslash \frenchspacing #1}'\null}
        !           883: \def\samp #1{`\tclose{#1}'\null}
        !           884: \def\key #1{{\tt \exhyphenpenalty=10000\uppercase{#1}}\null}
        !           885: \def\ctrl #1{{\tt \rawbackslash \hat}#1}
        !           886:
        !           887: \let\file=\samp
        !           888:
        !           889: % @code is a modification of @t,
        !           890: % which makes spaces the same size as normal in the surrounding text.
        !           891: \newdimen\tclosesave
        !           892: \newdimen\tcloserm
        !           893: \def\tclose#1{{\rm\mc \tcloserm=\fontdimen2\font \tt \tclosesave=\fontdimen2\font
        !           894: \fontdimen2\font=\tcloserm
        !           895: % prevent breaking lines at hyphens.
        !           896: \exhyphenpenalty=10000
        !           897: \def\ {{\fontdimen2\font=\tclosesave{} }}%
        !           898:  \rawbackslash \frenchspacing #1\fontdimen2\font=\tclosesave}\null}
        !           899: \let\code=\tclose
        !           900: %\let\exp=\tclose  %Was temporary
        !           901:
        !           902: % @kbd is like @code, except that if the argument is just one @key command,
        !           903: % then @kbd has no effect.
        !           904:
        !           905: \def\xkey{\key}
        !           906: \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
        !           907: \ifx\one\xkey\ifx\threex\three \key{#2}%
        !           908: \else\tclose{\look}\fi
        !           909: \else\tclose{\look}\fi}
        !           910:
        !           911: % Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
        !           912: % argument is to make the input look right: @dmn{pt} instead of
        !           913: % @dmn{}pt.
        !           914: %
        !           915: \def\dmn#1{\thinspace #1}
        !           916:
        !           917: \def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
        !           918:
        !           919: \def\l#1{{\li #1}\null}                %
        !           920:
        !           921: \def\r#1{{\rm\mc #1}}          % roman font
        !           922: % Use of \lowercase was suggested.
        !           923: \def\sc#1{{\smallcaps#1}}      % smallcaps font
        !           924: \def\ii#1{{\it #1}}            % italic font
        !           925:
        !           926: \message{page headings,}
        !           927:
        !           928: \newskip\titlepagetopglue \titlepagetopglue = 1.5in
        !           929: \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
        !           930:
        !           931: % First the title page.  Must do @settitle before @titlepage.
        !           932: \def\titlefont#1{{\titlerm\titlemc #1}}
        !           933:
        !           934: \newtoks\realeverypar
        !           935: \newif\ifseenauthor
        !           936: \newif\iffinishedtitlepage
        !           937:
        !           938: \def\titlepage{\begingroup \parindent=0pt \textfonts
        !           939:    \let\subtitlerm=\tenrm
        !           940: %**
        !           941:    \let\subtitlemc=\tenmin
        !           942: %**
        !           943: % I deinstalled the following change because \cmr12 is undefined.
        !           944: % This change was not in the ChangeLog anyway.  --rms.
        !           945: %   \let\subtitlerm=\cmr12
        !           946: %   \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
        !           947: %**
        !           948:    \def\subtitlefont{\subtitlerm \subtitlemc
        !           949:                      \normalbaselineskip = 13pt \normalbaselines}%
        !           950: %**
        !           951:    %
        !           952: %   \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
        !           953: %**
        !           954:    \def\authorfont{\authorrm\authormc
        !           955:                    \normalbaselineskip = 16pt \normalbaselines}%
        !           956: %**
        !           957:    %
        !           958:    % Leave some space at the very top of the page.
        !           959:    \vglue\titlepagetopglue
        !           960:    %
        !           961:    % Now you can print the title using @title.
        !           962:    \def\title{\parsearg\titlezzz}%
        !           963:    \def\titlezzz##1{\leftline{\titlefont{##1}}
        !           964:                    % print a rule at the page bottom also.
        !           965:                    \finishedtitlepagefalse
        !           966:                    \vskip4pt \hrule height 4pt \vskip4pt}%
        !           967:    % No rule at page bottom unless we print one at the top with @title.
        !           968:    \finishedtitlepagetrue
        !           969:    %
        !           970:    % Now you can put text using @subtitle.
        !           971:    \def\subtitle{\parsearg\subtitlezzz}%
        !           972:    \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
        !           973:    \let\subtext=\subtitle
        !           974:    %
        !           975:    % @author should come last, but may come many times.
        !           976:    \def\author{\parsearg\authorzzz}%
        !           977:    \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
        !           978:       {\authorfont \leftline{##1}}}%
        !           979:    %
        !           980:    % Most title ``pages'' are actually two pages long, with space
        !           981:    % at the top of the second.  We don't want the ragged left on the second.
        !           982:    \let\oldpage = \page
        !           983:    \def\page{%
        !           984:       \iffinishedtitlepage\else
        !           985:         \finishtitlepage
        !           986:       \fi
        !           987:       \oldpage
        !           988:       \let\page = \oldpage
        !           989:       \hbox{}}%
        !           990: %   \def\page{\oldpage \hbox{}}
        !           991: }
        !           992:
        !           993: \let\titlespec=\titlepage
        !           994:
        !           995: \def\Etitlepage{%
        !           996:    \iffinishedtitlepage\else
        !           997:       \finishtitlepage
        !           998:    \fi
        !           999:    % It is important to do the page break before ending the group,
        !          1000:    % because the headline and footline are only empty inside the group.
        !          1001:    % If we use the new definition of \page, we always get a blank page
        !          1002:    % after the title page, which we certainly don't want.
        !          1003:    \oldpage
        !          1004:    \endgroup
        !          1005:    \HEADINGSon
        !          1006: }
        !          1007:
        !          1008: \let\Etitlespec=\Etitlepage
        !          1009:
        !          1010: \def\finishtitlepage{%
        !          1011:    \vskip4pt \hrule height 2pt
        !          1012:    \vskip\titlepagebottomglue
        !          1013:    \finishedtitlepagetrue
        !          1014: }
        !          1015:
        !          1016: %%% Set up page headings and footings.
        !          1017:
        !          1018: \let\thispage=\folio
        !          1019:
        !          1020: \newtoks \evenheadline    % Token sequence for heading line of even pages
        !          1021: \newtoks \oddheadline     % Token sequence for heading line of odd pages
        !          1022: \newtoks \evenfootline    % Token sequence for footing line of even pages
        !          1023: \newtoks \oddfootline     % Token sequence for footing line of odd pages
        !          1024:
        !          1025: % Now make Tex use those variables
        !          1026: \headline={{\textfonts\rm \mc \ifodd\pageno \the\oddheadline
        !          1027:                             \else \the\evenheadline \fi}}
        !          1028: \footline={{\textfonts\rm \mc \ifodd\pageno \the\oddfootline
        !          1029:                             \else \the\evenfootline \fi}\HEADINGShook}
        !          1030: \let\HEADINGShook=\relax
        !          1031:
        !          1032: % Commands to set those variables.
        !          1033: % For example, this is what  @headings on  does
        !          1034: % @evenheading @thistitle|@thispage|@thischapter
        !          1035: % @oddheading @thischapter|@thispage|@thistitle
        !          1036: % @evenfooting @thisfile||
        !          1037: % @oddfooting ||@thisfile
        !          1038:
        !          1039: \def\evenheading{\parsearg\evenheadingxxx}
        !          1040: \def\oddheading{\parsearg\oddheadingxxx}
        !          1041: \def\everyheading{\parsearg\everyheadingxxx}
        !          1042:
        !          1043: \def\evenfooting{\parsearg\evenfootingxxx}
        !          1044: \def\oddfooting{\parsearg\oddfootingxxx}
        !          1045: \def\everyfooting{\parsearg\everyfootingxxx}
        !          1046:
        !          1047: {\catcode`\@=0 %
        !          1048:
        !          1049: \gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
        !          1050: \gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
        !          1051: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          1052:
        !          1053: \gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
        !          1054: \gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
        !          1055: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          1056:
        !          1057: \gdef\everyheadingxxx #1{\everyheadingyyy #1@|@|@|@|\finish}
        !          1058: \gdef\everyheadingyyy #1@|#2@|#3@|#4\finish{%
        !          1059: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
        !          1060: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          1061:
        !          1062: \gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
        !          1063: \gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
        !          1064: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          1065:
        !          1066: \gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
        !          1067: \gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
        !          1068: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          1069:
        !          1070: \gdef\everyfootingxxx #1{\everyfootingyyy #1@|@|@|@|\finish}
        !          1071: \gdef\everyfootingyyy #1@|#2@|#3@|#4\finish{%
        !          1072: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
        !          1073: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
        !          1074: %
        !          1075: }% unbind the catcode of @.
        !          1076:
        !          1077: % @headings double     turns headings on for double-sided printing.
        !          1078: % @headings single     turns headings on for single-sided printing.
        !          1079: % @headings off                turns them off.
        !          1080: % @headings on         same as @headings double, retained for compatibility.
        !          1081: % @headings after      turns on double-sided headings after this page.
        !          1082: % @headings doubleafter        turns on double-sided headings after this page.
        !          1083: % @headings singleafter turns on single-sided headings after this page.
        !          1084: % By default, they are off.
        !          1085:
        !          1086: \def\headings #1 {\csname HEADINGS#1\endcsname}
        !          1087:
        !          1088: \def\HEADINGSoff{
        !          1089: \global\evenheadline={\hfil} \global\evenfootline={\hfil}
        !          1090: \global\oddheadline={\hfil} \global\oddfootline={\hfil}}
        !          1091: \HEADINGSoff
        !          1092: % When we turn headings on, set the page number to 1.
        !          1093: % For double-sided printing, put current file name in lower left corner,
        !          1094: % chapter name on inside top of right hand pages, document
        !          1095: % title on inside top of left hand pages, and page numbers on outside top
        !          1096: % edge of all pages.
        !          1097: \def\HEADINGSdouble{
        !          1098: %\pagealignmacro
        !          1099: \global\pageno=1
        !          1100: \global\evenfootline={\hfil}
        !          1101: \global\oddfootline={\hfil}
        !          1102: \global\evenheadline={\line{\folio\hfil\thistitle}}
        !          1103: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          1104: }
        !          1105: % For single-sided printing, chapter title goes across top left of page,
        !          1106: % page number on top right.
        !          1107: \def\HEADINGSsingle{
        !          1108: %\pagealignmacro
        !          1109: \global\pageno=1
        !          1110: \global\evenfootline={\hfil}
        !          1111: \global\oddfootline={\hfil}
        !          1112: \global\evenheadline={\line{\thischapter\hfil\folio}}
        !          1113: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          1114: }
        !          1115: \def\HEADINGSon{\HEADINGSdouble}
        !          1116:
        !          1117: \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
        !          1118: \let\HEADINGSdoubleafter=\HEADINGSafter
        !          1119: \def\HEADINGSdoublex{%
        !          1120: \global\evenfootline={\hfil}
        !          1121: \global\oddfootline={\hfil}
        !          1122: \global\evenheadline={\line{\folio\hfil\thistitle}}
        !          1123: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          1124: }
        !          1125:
        !          1126: \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
        !          1127: \def\HEADINGSsinglex{%
        !          1128: \global\evenfootline={\hfil}
        !          1129: \global\oddfootline={\hfil}
        !          1130: \global\evenheadline={\line{\thischapter\hfil\folio}}
        !          1131: \global\oddheadline={\line{\thischapter\hfil\folio}}
        !          1132: }
        !          1133:
        !          1134: % Subroutines used in generating headings
        !          1135: % Produces Day Month Year style of output.
        !          1136: \def\today{\number\day\space
        !          1137: \ifcase\month\or
        !          1138: January\or February\or March\or April\or May\or June\or
        !          1139: July\or August\or September\or October\or November\or December\fi
        !          1140: \space\number\year}
        !          1141:
        !          1142: % Use this if you want the Month Day, Year style of output.
        !          1143: %\def\today{\ifcase\month\or
        !          1144: %January\or February\or March\or April\or May\or June\or
        !          1145: %July\or August\or September\or October\or November\or December\fi
        !          1146: %\space\number\day, \number\year}
        !          1147:
        !          1148: % @settitle line...  specifies the title of the document, for headings
        !          1149: % It generates no output of its own
        !          1150:
        !          1151: \def\thistitle{No Title}
        !          1152: \def\settitle{\parsearg\settitlezzz}
        !          1153: \def\settitlezzz #1{\gdef\thistitle{#1}}
        !          1154:
        !          1155: \message{tables,}
        !          1156:
        !          1157: % @tabs -- simple alignment
        !          1158:
        !          1159: % These don't work.  For one thing, \+ is defined as outer.
        !          1160: % So these macros cannot even be defined.
        !          1161:
        !          1162: %\def\tabs{\parsearg\tabszzz}
        !          1163: %\def\tabszzz #1{\settabs\+#1\cr}
        !          1164: %\def\tabline{\parsearg\tablinezzz}
        !          1165: %\def\tablinezzz #1{\+#1\cr}
        !          1166: %\def\&{&}
        !          1167:
        !          1168: % Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x).
        !          1169:
        !          1170: % default indentation of table text
        !          1171: \newdimen\tableindent \tableindent=.8in
        !          1172: % default indentation of @itemize and @enumerate text
        !          1173: \newdimen\itemindent  \itemindent=.3in
        !          1174: % margin between end of table item and start of table text.
        !          1175: \newdimen\itemmargin  \itemmargin=.1in
        !          1176:
        !          1177: % used internally for \itemindent minus \itemmargin
        !          1178: \newdimen\itemmax
        !          1179:
        !          1180: % Note @table, @vtable, and @vtable define @item, @itemx, etc., with
        !          1181: % these defs.
        !          1182: % They also define \itemindex
        !          1183: % to index the item name in whatever manner is desired (perhaps none).
        !          1184:
        !          1185: \def\internalBitem{\smallbreak \parsearg\itemzzz}
        !          1186: \def\internalBitemx{\par \parsearg\itemzzz}
        !          1187:
        !          1188: \def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
        !          1189: \def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \par \parsearg\xitemzzz}
        !          1190:
        !          1191: \def\internalBkitem{\smallbreak \parsearg\kitemzzz}
        !          1192: \def\internalBkitemx{\par \parsearg\kitemzzz}
        !          1193:
        !          1194: \def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}%
        !          1195:                  \itemzzz {#1}}
        !          1196:
        !          1197: \def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}%
        !          1198:                  \itemzzz {#1}}
        !          1199:
        !          1200: \def\itemzzz #1{\begingroup %
        !          1201:   \advance\hsize by -\rightskip
        !          1202:   \advance\hsize by -\tableindent
        !          1203:   \setbox0=\hbox{\itemfont{#1}}%
        !          1204:   \itemindex{#1}%
        !          1205:   \nobreak % This prevents a break before @itemx.
        !          1206:   %
        !          1207:   % Be sure we are not still in the middle of a paragraph.
        !          1208:   \parskip=0in
        !          1209:   \par
        !          1210:   %
        !          1211:   % If the item text does not fit in the space we have, put it on a line
        !          1212:   % by itself, and do not allow a page break either before or after that
        !          1213:   % line.  We do not start a paragraph here because then if the next
        !          1214:   % command is, e.g., @kindex, the whatsit would get put into the
        !          1215:   % horizontal list on a line by itself, resulting in extra blank space.
        !          1216:   \ifdim \wd0>\itemmax
        !          1217:     \setbox0=\hbox{\hskip \leftskip \hskip -\tableindent \unhbox0}\box0
        !          1218:     \nobreak
        !          1219:   \else
        !          1220:     % The item text fits into the space.  Start a paragraph, so that the
        !          1221:     % following text (if any) will end up on the same line.  Since that
        !          1222:     % text will be indented by \tableindent, we make the item text be in
        !          1223:     % a zero-width box.
        !          1224:     \noindent
        !          1225:     \rlap{\hskip -\tableindent\box0}%
        !          1226:   \fi
        !          1227:   \endgroup
        !          1228: }
        !          1229:
        !          1230: \def\item{\errmessage{@item while not in a table}}
        !          1231: \def\itemx{\errmessage{@itemx while not in a table}}
        !          1232: \def\kitem{\errmessage{@kitem while not in a table}}
        !          1233: \def\kitemx{\errmessage{@kitemx while not in a table}}
        !          1234: \def\xitem{\errmessage{@xitem while not in a table}}
        !          1235: \def\xitemx{\errmessage{@xitemx while not in a table}}
        !          1236:
        !          1237: %% Contains a kludge to get @end[description] to work
        !          1238: \def\description{\tablez{\dontindex}{1}{}{}{}{}}
        !          1239:
        !          1240: \def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
        !          1241: {\obeylines\obeyspaces%
        !          1242: \gdef\tablex #1^^M{%
        !          1243: \tabley\dontindex#1        \endtabley}}
        !          1244:
        !          1245: \def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
        !          1246: {\obeylines\obeyspaces%
        !          1247: \gdef\ftablex #1^^M{%
        !          1248: \tabley\fnitemindex#1        \endtabley
        !          1249: \def\Eftable{\endgraf\endgroup\afterenvbreak}%
        !          1250: \let\Etable=\relax}}
        !          1251:
        !          1252: \def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex}
        !          1253: {\obeylines\obeyspaces%
        !          1254: \gdef\vtablex #1^^M{%
        !          1255: \tabley\vritemindex#1        \endtabley
        !          1256: \def\Evtable{\endgraf\endgroup\afterenvbreak}%
        !          1257: \let\Etable=\relax}}
        !          1258:
        !          1259: \def\dontindex #1{}
        !          1260: \def\fnitemindex #1{\doind {fn}{\code{#1}}}%
        !          1261: \def\vritemindex #1{\doind {vr}{\code{#1}}}%
        !          1262:
        !          1263: {\obeyspaces %
        !          1264: \gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
        !          1265: \tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
        !          1266:
        !          1267: \def\tablez #1#2#3#4#5#6{%
        !          1268: \aboveenvbreak %
        !          1269: \begingroup %
        !          1270: \def\Edescription{\Etable}% Neccessary kludge.
        !          1271: \let\itemindex=#1%
        !          1272: \ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
        !          1273: \ifnum 0#4>0 \tableindent=#4\mil \fi %
        !          1274: \ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
        !          1275: \def\itemfont{#2}%
        !          1276: \itemmax=\tableindent %
        !          1277: \advance \itemmax by -\itemmargin %
        !          1278: \advance \leftskip by \tableindent %
        !          1279: \exdentamount=\tableindent
        !          1280: \parindent = 0pt
        !          1281: \parskip = \smallskipamount
        !          1282: \ifdim \parskip=0pt \parskip=2pt \fi%
        !          1283: \def\Etable{\endgraf\endgroup\afterenvbreak}%
        !          1284: \let\item = \internalBitem %
        !          1285: \let\itemx = \internalBitemx %
        !          1286: \let\kitem = \internalBkitem %
        !          1287: \let\kitemx = \internalBkitemx %
        !          1288: \let\xitem = \internalBxitem %
        !          1289: \let\xitemx = \internalBxitemx %
        !          1290: }
        !          1291:
        !          1292: % This is the counter used by @enumerate, which is really @itemize
        !          1293:
        !          1294: \newcount \itemno
        !          1295:
        !          1296: \def\itemize{\parsearg\itemizezzz}
        !          1297:
        !          1298: \def\itemizezzz #1{%
        !          1299:   \begingroup % ended by the @end itemsize
        !          1300:   \itemizey {#1}{\Eitemize}
        !          1301: }
        !          1302:
        !          1303: \def\itemizey #1#2{%
        !          1304: \aboveenvbreak %
        !          1305: \itemmax=\itemindent %
        !          1306: \advance \itemmax by -\itemmargin %
        !          1307: \advance \leftskip by \itemindent %
        !          1308: \exdentamount=\itemindent
        !          1309: \parindent = 0pt %
        !          1310: \parskip = \smallskipamount %
        !          1311: \ifdim \parskip=0pt \parskip=2pt \fi%
        !          1312: \def#2{\endgraf\endgroup\afterenvbreak}%
        !          1313: \def\itemcontents{#1}%
        !          1314: \let\item=\itemizeitem}
        !          1315:
        !          1316: \def\bullet{$\ptexbullet$}
        !          1317: \def\minus{$-$}
        !          1318:
        !          1319: % Set sfcode to normal for the chars that usually have another value.
        !          1320: % These are `.?!:;,'
        !          1321: \def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
        !          1322:   \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
        !          1323:
        !          1324: % \splitoff TOKENS\endmark defines \first to be the first token in
        !          1325: % TOKENS, and \rest to be the remainder.
        !          1326: %
        !          1327: \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
        !          1328:
        !          1329: % Allow an optional argument of an uppercase letter, lowercase letter,
        !          1330: % or number, to specify the first label in the enumerated list.  No
        !          1331: % argument is the same as `1'.
        !          1332: %
        !          1333: \def\enumerate{\parsearg\enumeratezzz}
        !          1334: \def\enumeratezzz #1{\enumeratey #1  \endenumeratey}
        !          1335: \def\enumeratey #1 #2\endenumeratey{%
        !          1336:   \begingroup % ended by the @end enumerate
        !          1337:   %
        !          1338:   % If we were given no argument, pretend we were given `1'.
        !          1339:   \def\thearg{#1}%
        !          1340:   \ifx\thearg\empty \def\thearg{1}\fi
        !          1341:   %
        !          1342:   % Detect if the argument is a single token.  If so, it might be a
        !          1343:   % letter.  Otherwise, the only valid thing it can be is a number.
        !          1344:   % (We will always have one token, because of the test we just made.
        !          1345:   % This is a good thing, since \splitoff doesn't work given nothing at
        !          1346:   % all -- the first parameter is undelimited.)
        !          1347:   \expandafter\splitoff\thearg\endmark
        !          1348:   \ifx\rest\empty
        !          1349:     % Only one token in the argument.  It could still be anything.
        !          1350:     % A ``lowercase letter'' is one whose \lccode is nonzero.
        !          1351:     % An ``uppercase letter'' is one whose \lccode is both nonzero, and
        !          1352:     %   not equal to itself.
        !          1353:     % Otherwise, we assume it's a number.
        !          1354:     %
        !          1355:     % We need the \relax at the end of the \ifnum lines to stop TeX from
        !          1356:     % continuing to look for a <number>.
        !          1357:     %
        !          1358:     \ifnum\lccode\expandafter`\thearg=0\relax
        !          1359:       \numericenumerate % a number (we hope)
        !          1360:     \else
        !          1361:       % It's a letter.
        !          1362:       \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
        !          1363:         \lowercaseenumerate % lowercase letter
        !          1364:       \else
        !          1365:         \uppercaseenumerate % uppercase letter
        !          1366:       \fi
        !          1367:     \fi
        !          1368:   \else
        !          1369:     % Multiple tokens in the argument.  We hope it's a number.
        !          1370:     \numericenumerate
        !          1371:   \fi
        !          1372: }
        !          1373:
        !          1374: % An @enumerate whose labels are integers.  The starting integer is
        !          1375: % given in \thearg.
        !          1376: %
        !          1377: \def\numericenumerate{%
        !          1378:   \itemno = \thearg
        !          1379:   \startenumeration{\the\itemno}%
        !          1380: }
        !          1381:
        !          1382: % The starting (lowercase) letter is in \thearg.
        !          1383: \def\lowercaseenumerate{%
        !          1384:   \itemno = \expandafter`\thearg
        !          1385:   \startenumeration{%
        !          1386:     % Be sure we're not beyond the end of the alphabet.
        !          1387:     \ifnum\itemno=0
        !          1388:       \errmessage{No more lowercase letters in @enumerate; get a bigger
        !          1389:                   alphabet}%
        !          1390:     \fi
        !          1391:     \char\lccode\itemno
        !          1392:   }%
        !          1393: }
        !          1394:
        !          1395: % The starting (uppercase) letter is in \thearg.
        !          1396: \def\uppercaseenumerate{%
        !          1397:   \itemno = \expandafter`\thearg
        !          1398:   \startenumeration{%
        !          1399:     % Be sure we're not beyond the end of the alphabet.
        !          1400:     \ifnum\itemno=0
        !          1401:       \errmessage{No more uppercase letters in @enumerate; get a bigger
        !          1402:                   alphabet}
        !          1403:     \fi
        !          1404:     \char\uccode\itemno
        !          1405:   }%
        !          1406: }
        !          1407:
        !          1408: % Call itemizey, adding a period to the first argument and supplying the
        !          1409: % common last two arguments.  Also subtract one from the initial value in
        !          1410: % \itemno, since @item increments \itemno.
        !          1411: %
        !          1412: \def\startenumeration#1{%
        !          1413:   \advance\itemno by -1
        !          1414:   \itemizey{#1.}\Eenumerate\flushcr
        !          1415: }
        !          1416:
        !          1417: % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
        !          1418: % to @enumerate.
        !          1419: %
        !          1420: \def\alphaenumerate{\enumerate{a}}
        !          1421: \def\capsenumerate{\enumerate{A}}
        !          1422: \def\Ealphaenumerate{\Eenumerate}
        !          1423: \def\Ecapsenumerate{\Eenumerate}
        !          1424:
        !          1425: % Definition of @item while inside @itemize.
        !          1426:
        !          1427: \def\itemizeitem{%
        !          1428: \advance\itemno by 1
        !          1429: {\let\par=\endgraf \smallbreak}%
        !          1430: \ifhmode \errmessage{\in hmode at itemizeitem}\fi
        !          1431: {\parskip=0in \hskip 0pt
        !          1432: \hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
        !          1433: \vadjust{\penalty 1200}}%
        !          1434: \flushcr}
        !          1435:
        !          1436: \message{indexing,}
        !          1437: % Index generation facilities
        !          1438:
        !          1439: % Define \newwrite to be identical to plain tex's \newwrite
        !          1440: % except not \outer, so it can be used within \newindex.
        !          1441: {\catcode`\@=11
        !          1442: \gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
        !          1443:
        !          1444: % \newindex {foo} defines an index named foo.
        !          1445: % It automatically defines \fooindex such that
        !          1446: % \fooindex ...rest of line... puts an entry in the index foo.
        !          1447: % It also defines \fooindfile to be the number of the output channel for
        !          1448: % the file that        accumulates this index.  The file's extension is foo.
        !          1449: % The name of an index should be no more than 2 characters long
        !          1450: % for the sake of vms.
        !          1451:
        !          1452: \def\newindex #1{
        !          1453: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
        !          1454: \openout \csname#1indfile\endcsname \jobname.#1        % Open the file
        !          1455: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1456: \noexpand\doindex {#1}}
        !          1457: }
        !          1458:
        !          1459: % @defindex foo  ==  \newindex{foo}
        !          1460:
        !          1461: \def\defindex{\parsearg\newindex}
        !          1462:
        !          1463: % Define @defcodeindex, like @defindex except put all entries in @code.
        !          1464:
        !          1465: \def\newcodeindex #1{
        !          1466: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
        !          1467: \openout \csname#1indfile\endcsname \jobname.#1        % Open the file
        !          1468: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1469: \noexpand\docodeindex {#1}}
        !          1470: }
        !          1471:
        !          1472: \def\defcodeindex{\parsearg\newcodeindex}
        !          1473:
        !          1474: % @synindex foo bar    makes index foo feed into index bar.
        !          1475: % Do this instead of @defindex foo if you don't want it as a separate index.
        !          1476: \def\synindex #1 #2 {%
        !          1477: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
        !          1478: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
        !          1479: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1480: \noexpand\doindex {#2}}%
        !          1481: }
        !          1482:
        !          1483: % @syncodeindex foo bar   similar, but put all entries made for index foo
        !          1484: % inside @code.
        !          1485: \def\syncodeindex #1 #2 {%
        !          1486: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
        !          1487: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
        !          1488: \expandafter\xdef\csname#1index\endcsname{%    % Define \xxxindex
        !          1489: \noexpand\docodeindex {#2}}%
        !          1490: }
        !          1491:
        !          1492: % Define \doindex, the driver for all \fooindex macros.
        !          1493: % Argument #1 is generated by the calling \fooindex macro,
        !          1494: %  and it is "foo", the name of the index.
        !          1495:
        !          1496: % \doindex just uses \parsearg; it calls \doind for the actual work.
        !          1497: % This is because \doind is more useful to call from other macros.
        !          1498:
        !          1499: % There is also \dosubind {index}{topic}{subtopic}
        !          1500: % which makes an entry in a two-level index such as the operation index.
        !          1501:
        !          1502: \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
        !          1503: \def\singleindexer #1{\doind{\indexname}{#1}}
        !          1504:
        !          1505: %*********************************************
        !          1506: %*** For the compat'y with texinfo.tex.ntt
        !          1507: %*** jtexinfo patch by S.Tomura 89-Dec-7
        !          1508: \def\Jempty{}
        !          1509: \def\singleindexer #1{\singleindexerB#1[]\singleindexerA}
        !          1510: \def\singleindexerB#1[#2]{\edef\Jone{#1}\edef\Jtwo{#2}%
        !          1511: \ifx\Jempty\Jtwo\let\Jnext=\relax\let\singleindexerA=\singleindexerD%
        !          1512: \else\let\Jnext=\singleindexerC\let\singleindexerA=\singleindexerE\fi%
        !          1513: \Jnext}
        !          1514: \def\singleindexerC#1[]{}
        !          1515: \def\singleindexerD{\doind{\indexname}{\Jone}}
        !          1516: \def\singleindexerE{\Jdoind{\indexname}{\Jone}{\Jtwo}}
        !          1517: %**** end of patch
        !          1518: %*********************************************
        !          1519:
        !          1520:
        !          1521:
        !          1522: % like the previous two, but they put @code around the argument.
        !          1523: \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
        !          1524: \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
        !          1525:
        !          1526: \def\indexdummies{%
        !          1527: \def\_{{\realbackslash _}}%
        !          1528: \def\w{\realbackslash w }%
        !          1529: \def\bf{\realbackslash bf }%
        !          1530: \def\rm{\realbackslash rm }%
        !          1531: \def\sl{\realbackslash sl }%
        !          1532: \def\sf{\realbackslash sf}%
        !          1533: \def\tt{\realbackslash tt}%
        !          1534: \def\gtr{\realbackslash gtr}%
        !          1535: \def\less{\realbackslash less}%
        !          1536: \def\hat{\realbackslash hat}%
        !          1537: \def\char{\realbackslash char}%
        !          1538: \def\TeX{\realbackslash TeX}%
        !          1539: \def\dots{\realbackslash dots }%
        !          1540: \def\copyright{\realbackslash copyright }%
        !          1541: \def\tclose##1{\realbackslash tclose {##1}}%
        !          1542: \def\code##1{\realbackslash code {##1}}%
        !          1543: \def\samp##1{\realbackslash samp {##1}}%
        !          1544: \def\t##1{\realbackslash r {##1}}%
        !          1545: \def\r##1{\realbackslash r {##1}}%
        !          1546: \def\i##1{\realbackslash i {##1}}%
        !          1547: \def\b##1{\realbackslash b {##1}}%
        !          1548: \def\cite##1{\realbackslash cite {##1}}%
        !          1549: \def\key##1{\realbackslash key {##1}}%
        !          1550: \def\file##1{\realbackslash file {##1}}%
        !          1551: \def\var##1{\realbackslash var {##1}}%
        !          1552: \def\kbd##1{\realbackslash kbd {##1}}%
        !          1553: }
        !          1554:
        !          1555: % \indexnofonts no-ops all font-change commands.
        !          1556: % This is used when outputting the strings to sort the index by.
        !          1557: \def\indexdummyfont#1{#1}
        !          1558: \def\indexdummytex{TeX}
        !          1559: \def\indexdummydots{...}
        !          1560:
        !          1561: \def\indexnofonts{%
        !          1562: \let\w=\indexdummyfont
        !          1563: \let\t=\indexdummyfont
        !          1564: \let\r=\indexdummyfont
        !          1565: \let\i=\indexdummyfont
        !          1566: \let\b=\indexdummyfont
        !          1567: \let\emph=\indexdummyfont
        !          1568: \let\strong=\indexdummyfont
        !          1569: \let\cite=\indexdummyfont
        !          1570: \let\sc=\indexdummyfont
        !          1571: %Don't no-op \tt, since it isn't a user-level command
        !          1572: % and is used in the definitions of the active chars like <, >, |...
        !          1573: %\let\tt=\indexdummyfont
        !          1574: \let\tclose=\indexdummyfont
        !          1575: \let\code=\indexdummyfont
        !          1576: \let\file=\indexdummyfont
        !          1577: \let\samp=\indexdummyfont
        !          1578: \let\kbd=\indexdummyfont
        !          1579: \let\key=\indexdummyfont
        !          1580: \let\var=\indexdummyfont
        !          1581: \let\TeX=\indexdummytex
        !          1582: \let\dots=\indexdummydots
        !          1583: }
        !          1584:
        !          1585: % To define \realbackslash, we must make \ not be an escape.
        !          1586: % We must first make another character (@) an escape
        !          1587: % so we do not become unable to do a definition.
        !          1588:
        !          1589: {\catcode`\@=0 \catcode`\\=\other
        !          1590: @gdef@realbackslash{\}}
        !          1591:
        !          1592: \let\indexbackslash=0  %overridden during \printindex.
        !          1593:
        !          1594: \def\doind #1#2{%
        !          1595: {\count10=\lastpenalty %
        !          1596: {\indexdummies % Must do this here, since \bf, etc expand at this stage
        !          1597: \escapechar=`\\%
        !          1598: {\let\folio=0% Expand all macros now EXCEPT \folio
        !          1599: \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
        !          1600: % so it will be output as is; and it will print as backslash in the indx.
        !          1601: %
        !          1602: % Now process the index-string once, with all font commands turned off,
        !          1603: % to get the string to sort the index by.
        !          1604: {\indexnofonts
        !          1605: \xdef\temp1{#2}%
        !          1606: }%
        !          1607: % Now produce the complete index entry.  We process the index-string again,
        !          1608: % this time with font commands expanded, to get what to print in the index.
        !          1609: \edef\temp{%
        !          1610: \write \csname#1indfile\endcsname{%
        !          1611: \realbackslash entry {\temp1}{\folio}{#2}}}%
        !          1612: \temp }%
        !          1613: }\penalty\count10}}
        !          1614:
        !          1615: \def\dosubind #1#2#3{%
        !          1616: {\count10=\lastpenalty %
        !          1617: {\indexdummies % Must do this here, since \bf, etc expand at this stage
        !          1618: \escapechar=`\\%
        !          1619: {\let\folio=0%
        !          1620: \def\rawbackslashxx{\indexbackslash}%
        !          1621: %
        !          1622: % Now process the index-string once, with all font commands turned off,
        !          1623: % to get the string to sort the index by.
        !          1624: {\indexnofonts
        !          1625: \xdef\temp1{#2 #3}%
        !          1626: }%
        !          1627: % Now produce the complete index entry.  We process the index-string again,
        !          1628: % this time with font commands expanded, to get what to print in the index.
        !          1629: \edef\temp{%
        !          1630: \write \csname#1indfile\endcsname{%
        !          1631: \realbackslash entry {\temp1}{\folio}{#2}{#3}}}%
        !          1632: \temp }%
        !          1633: }\penalty\count10}}
        !          1634:
        !          1635: % The index entry written in the file actually looks like
        !          1636: %  \entry {sortstring}{page}{topic}
        !          1637: % or
        !          1638: %  \entry {sortstring}{page}{topic}{subtopic}
        !          1639: % The texindex program reads in these files and writes files
        !          1640: % containing these kinds of lines:
        !          1641: %  \initial {c}
        !          1642: %     before the first topic whose initial is c
        !          1643: %  \entry {topic}{pagelist}
        !          1644: %     for a topic that is used without subtopics
        !          1645: %  \primary {topic}
        !          1646: %     for the beginning of a topic that is used with subtopics
        !          1647: %  \secondary {subtopic}{pagelist}
        !          1648: %     for each subtopic.
        !          1649:
        !          1650: % Define the user-accessible indexing commands
        !          1651: % @findex, @vindex, @kindex, @cindex.
        !          1652:
        !          1653: \def\findex {\fnindex}
        !          1654: \def\kindex {\kyindex}
        !          1655: \def\cindex {\cpindex}
        !          1656: \def\vindex {\vrindex}
        !          1657: \def\tindex {\tpindex}
        !          1658: \def\pindex {\pgindex}
        !          1659:
        !          1660: \def\cindexsub {\begingroup\obeylines\cindexsub}
        !          1661: {\obeylines %
        !          1662: \gdef\cindexsub "#1" #2^^M{\endgroup %
        !          1663: \dosubind{cp}{#2}{#1}}}
        !          1664:
        !          1665:
        !          1666: %*********************************************
        !          1667: %*** jtexinfo patch  by S.Tomura 89-Nov-23
        !          1668: %***
        !          1669: \def\Jdoind #1#2#3{%
        !          1670: {\indexdummies % Must do this here, since \bf, etc expand at this stage
        !          1671: \count10=\lastpenalty %
        !          1672: \escapechar=`\\%
        !          1673: {\let\folio=0% Expand all macros now EXCEPT \folio
        !          1674: \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
        !          1675: % so it will be output as is; and it will print as backslash in the indx.
        !          1676: %
        !          1677: % Now process the index-string once, with all font commands turned off,
        !          1678: % to get the string to sort the index by.
        !          1679: {\indexnofonts
        !          1680: \xdef\temp1{#3}%
        !          1681: }%
        !          1682: % Now produce the complete index entry.  We process the index-string again,
        !          1683: % this time with font commands expanded, to get what to print in the index.
        !          1684: \edef\temp{%
        !          1685: \write \csname#1indfile\endcsname{%
        !          1686: \realbackslash entry {\temp1}{\folio}{#2}}}%
        !          1687: \temp }%
        !          1688: \penalty\count10}}
        !          1689: %*** end of patch
        !          1690: %*********************************************
        !          1691:
        !          1692: % Define the macros used in formatting output of the sorted index material.
        !          1693:
        !          1694: % This is what you call to cause a particular index to get printed.
        !          1695: % Write
        !          1696: % @unnumbered Function Index
        !          1697: % @printindex fn
        !          1698:
        !          1699: \def\printindex{\parsearg\doprintindex}
        !          1700:
        !          1701: \def\doprintindex#1{%
        !          1702:   \tex
        !          1703:   \dobreak \chapheadingskip {10000}
        !          1704:   \catcode`\%=\other\catcode`\&=\other\catcode`\#=\other
        !          1705:   \catcode`\$=\other\catcode`\_=\other
        !          1706:   \catcode`\~=\other
        !          1707:   \catcode`\@ =11% kusumi@isl.mei.co.jp
        !          1708:   %
        !          1709:   % The following don't help, since the chars were translated
        !          1710:   % when the raw index was written, and their fonts were discarded
        !          1711:   % due to \indexnofonts.
        !          1712:   %\catcode`\"=\active
        !          1713:   %\catcode`\^=\active
        !          1714:   %\catcode`\_=\active
        !          1715:   %\catcode`\|=\active
        !          1716:   %\catcode`\<=\active
        !          1717:   %\catcode`\>=\active
        !          1718:   % %
        !          1719:   \def\indexbackslash{\rawbackslashxx}
        !          1720:   \indexfonts\rm\mc \tolerance=9500 \advance\baselineskip -1pt
        !          1721:   \begindoublecolumns
        !          1722:   %
        !          1723:   % See if the index file exists and is nonempty.
        !          1724:   \openin 1 \jobname.#1s
        !          1725:   \ifeof 1
        !          1726:     % \enddoublecolumns gets confused if there is no text in the index,
        !          1727:     % and it loses the chapter title and the aux file entries for the
        !          1728:     % index.  The easiest way to prevent this problem is to make sure
        !          1729:     % there is some text.
        !          1730:     (Index is nonexistent)
        !          1731:     \else
        !          1732:     %
        !          1733:     % If the index file exists but is empty, then \openin leaves \ifeof
        !          1734:     % false.  We have to make TeX try to read something from the file, so
        !          1735:     % it can discover if there is anything in it.
        !          1736:     \read 1 to \temp
        !          1737:     \ifeof 1
        !          1738:       (Index is empty)
        !          1739:     \else
        !          1740:       \input \jobname.#1s
        !          1741:     \fi
        !          1742:   \fi
        !          1743:   \closein 1
        !          1744:   \enddoublecolumns
        !          1745:   \Etex
        !          1746: }
        !          1747:
        !          1748: % These macros are used by the sorted index file itself.
        !          1749: % Change them to control the appearance of the index.
        !          1750:
        !          1751: % Same as \bigskipamount except no shrink.
        !          1752: % \balancecolumns gets confused if there is any shrink.
        !          1753: \newskip\initialskipamount \initialskipamount 12pt plus4pt
        !          1754:
        !          1755: \def\initial #1{%
        !          1756: {\let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
        !          1757: \ifdim\lastskip<\initialskipamount
        !          1758: \removelastskip \penalty-200 \vskip \initialskipamount\fi
        !          1759: \line{\secbf\secgt#1\hfill}\kern 2pt\penalty10000}}
        !          1760:
        !          1761: \def\entry #1#2{\begingroup
        !          1762:   \parfillskip=0in \parskip=0in \parindent=0in
        !          1763:   %
        !          1764:   % \hangindent is only relevant when the page number and the entry text
        !          1765:   % don't fit on one line.  In that case, bob suggests starting the dots
        !          1766:   % pretty far over on the line.
        !          1767:   % \hangafter is reset to 1 at the start of each paragraph.
        !          1768:   \hangindent=.75\hsize
        !          1769:   \noindent
        !          1770:   %
        !          1771:   % Don't break the text of the index entry.
        !          1772:   \hbox{#1}%
        !          1773:   %
        !          1774:   % If we must, put the page number on a line of its own, and fill out
        !          1775:   % this line with blank space.  (The \hfil is overwhelmed with the
        !          1776:   % fill leaders glue in \indexdotfill if the page number does fit.)
        !          1777:   \hfil\penalty50
        !          1778:   \null\nobreak\indexdotfill % Have leaders before the page number.
        !          1779:   %
        !          1780:   % The `\ ' here is removed by the implicit \unskip that TeX does as
        !          1781:   % part of (the primitive) \par.  Without, a spurious underfull \hbox ensues.
        !          1782:   \ #2% The page number ends the paragraph.
        !          1783:   \par
        !          1784: \endgroup}
        !          1785:
        !          1786: % Like \dotfill except takes at least 1 em.
        !          1787: \def\indexdotfill{\cleaders
        !          1788:   \hbox{$\mathsurround=0pt \mkern1.5mu . \mkern1.5mu$}\hskip 1em plus 1fill}
        !          1789:
        !          1790: \def\primary #1{\line{#1\hfil}}
        !          1791:
        !          1792: \newskip\secondaryindent \secondaryindent=0.5cm
        !          1793:
        !          1794: \def\secondary #1#2{
        !          1795: {\parfillskip=0in \parskip=0in
        !          1796: \hangindent =1in \hangafter=1
        !          1797: \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
        !          1798: }}
        !          1799:
        !          1800: %% Define two-column mode, which is used in indexes.
        !          1801: %% Adapted from the TeXBook, page 416
        !          1802: \catcode `\@=11
        !          1803:
        !          1804: \newbox\partialpage
        !          1805:
        !          1806: \newdimen\doublecolumnhsize  \doublecolumnhsize = 3.11in
        !          1807: \newdimen\doublecolumnvsize  \doublecolumnvsize = 19.1in
        !          1808: \newdimen\availdimen@
        !          1809:
        !          1810: \def\begindoublecolumns{\begingroup
        !          1811:   \output={\global\setbox\partialpage=
        !          1812:     \vbox{\unvbox255\kern -\topskip \kern \baselineskip}}\eject
        !          1813:   \output={\doublecolumnout}%
        !          1814:   \hsize=\doublecolumnhsize \vsize=\doublecolumnvsize}
        !          1815: \def\enddoublecolumns{\output={\balancecolumns}\eject
        !          1816:   \endgroup \pagegoal=\vsize}
        !          1817:
        !          1818: \def\doublecolumnout{\splittopskip=\topskip \splitmaxdepth=\maxdepth
        !          1819:   \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
        !          1820:   \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
        !          1821:   \onepageout\pagesofar \unvbox255 \penalty\outputpenalty}
        !          1822: \def\pagesofar{\unvbox\partialpage %
        !          1823:   \hsize=\doublecolumnhsize % have to restore this since output routine
        !          1824: %            changes it to set cropmarks (P. A. MacKay, 12 Nov. 1986)
        !          1825:   \wd0=\hsize \wd2=\hsize \hbox to\pagewidth{\box0\hfil\box2}}
        !          1826: \def\balancecolumns{%
        !          1827: % Unset the glue.
        !          1828:   \setbox255=\vbox{\unvbox255}
        !          1829:   \dimen@=\ht255
        !          1830:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
        !          1831:   \divide\dimen@ by2
        !          1832:   \availdimen@=\pageheight \advance\availdimen@ by-\ht\partialpage
        !          1833: % If the remaining data is too big for one page,
        !          1834: % output one page normally, then work with what remains.
        !          1835:   \ifdim \dimen@>\availdimen@
        !          1836:    {
        !          1837:      \splittopskip=\topskip \splitmaxdepth=\maxdepth
        !          1838:      \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
        !          1839:      \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
        !          1840:      \onepageout\pagesofar
        !          1841:    }
        !          1842: % Recompute size of what remains, in case we just output some of it.
        !          1843:   \dimen@=\ht255
        !          1844:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
        !          1845:   \divide\dimen@ by2
        !          1846:   \fi
        !          1847:   \setbox0=\vbox{\unvbox255}
        !          1848:   \splittopskip=\topskip
        !          1849:   {\vbadness=10000 \loop \global\setbox3=\copy0
        !          1850:     \global\setbox1=\vsplit3 to\dimen@
        !          1851:     \ifdim\ht3>\dimen@ \global\advance\dimen@ by1pt \repeat}
        !          1852:   \setbox0=\vbox to\dimen@{\unvbox1}  \setbox2=\vbox to\dimen@{\unvbox3}
        !          1853:   \pagesofar}
        !          1854:
        !          1855: \catcode `\@=\other
        !          1856: \message{sectioning,}
        !          1857: % Define chapters, sections, etc.
        !          1858:
        !          1859: \newcount \chapno
        !          1860: \newcount \secno        \secno=0
        !          1861: \newcount \subsecno     \subsecno=0
        !          1862: \newcount \subsubsecno  \subsubsecno=0
        !          1863:
        !          1864: % This counter is funny since it counts through charcodes of letters A, B, ...
        !          1865: \newcount \appendixno  \appendixno = `\@
        !          1866: \def\appendixletter{\char\the\appendixno}
        !          1867:
        !          1868: \newwrite \contentsfile
        !          1869: % This is called from \setfilename.
        !          1870: \def\opencontents{\openout \contentsfile = \jobname.toc}
        !          1871:
        !          1872: % Each @chapter defines this as the name of the chapter.
        !          1873: % page headings and footings can use it.  @section does likewise
        !          1874:
        !          1875: \def\thischapter{} \def\thissection{}
        !          1876: \def\seccheck#1{\if \pageno<0 %
        !          1877: \errmessage{@#1 not allowed after generating table of contents}\fi
        !          1878: %
        !          1879: }
        !          1880:
        !          1881: \def\chapternofonts{%
        !          1882: \let\rawbackslash=\relax%
        !          1883: \let\frenchspacing=\relax%
        !          1884: \def\result{\realbackslash result}
        !          1885: \def\equiv{\realbackslash equiv}
        !          1886: \def\expansion{\realbackslash expansion}
        !          1887: \def\print{\realbackslash print}
        !          1888: \def\TeX{\realbackslash TeX}
        !          1889: \def\dots{\realbackslash dots}
        !          1890: \def\copyright{\realbackslash copyright}
        !          1891: \def\tt{\realbackslash tt}
        !          1892: \def\bf{\realbackslash bf }
        !          1893: \def\w{\realbackslash w}
        !          1894: \def\less{\realbackslash less}
        !          1895: \def\gtr{\realbackslash gtr}
        !          1896: \def\hat{\realbackslash hat}
        !          1897: \def\char{\realbackslash char}
        !          1898: \def\tclose##1{\realbackslash tclose {##1}}
        !          1899: \def\code##1{\realbackslash code {##1}}
        !          1900: \def\samp##1{\realbackslash samp {##1}}
        !          1901: \def\r##1{\realbackslash r {##1}}
        !          1902: \def\b##1{\realbackslash b {##1}}
        !          1903: \def\key##1{\realbackslash key {##1}}
        !          1904: \def\file##1{\realbackslash file {##1}}
        !          1905: \def\kbd##1{\realbackslash kbd {##1}}
        !          1906: % These are redefined because @smartitalic wouldn't work inside xdef.
        !          1907: \def\i##1{\realbackslash i {##1}}
        !          1908: \def\cite##1{\realbackslash cite {##1}}
        !          1909: \def\var##1{\realbackslash var {##1}}
        !          1910: \def\emph##1{\realbackslash emph {##1}}
        !          1911: \def\dfn##1{\realbackslash dfn {##1}}
        !          1912: }
        !          1913:
        !          1914: \def\thischaptername{No Chapter Title}
        !          1915: \outer\def\chapter{\parsearg\chapterzzz}
        !          1916: \def\chapterzzz #1{\seccheck{chapter}%
        !          1917: \secno=0 \subsecno=0 \subsubsecno=0
        !          1918: \global\advance \chapno by 1 \message{\strchapapp\the\chapno\strchaptail}%
        !          1919: \chapmacro {#1}{\the\chapno}%
        !          1920: \gdef\thissection{#1}%
        !          1921: \gdef\thischaptername{#1}%
        !          1922: % We don't substitute the actual chapter name into \thischapter
        !          1923: % because we don't want its macros evaluated now.
        !          1924: \xdef\thischapter{\strchapapp\the\chapno\strchaptail: \noexpand\thischaptername}%
        !          1925: {\chapternofonts%
        !          1926: \edef\temp{{\realbackslash chapentry {#1}{\the\chapno}{\noexpand\folio}}}%
        !          1927: \escapechar=`\\%
        !          1928: \write \contentsfile \temp  %
        !          1929: \donoderef %
        !          1930: \global\let\section = \numberedsec
        !          1931: \global\let\subsection = \numberedsubsec
        !          1932: \global\let\subsubsection = \numberedsubsubsec
        !          1933: }}
        !          1934:
        !          1935: \outer\def\appendix{\parsearg\appendixzzz}
        !          1936: \def\appendixzzz #1{\seccheck{appendix}%
        !          1937: \secno=0 \subsecno=0 \subsubsecno=0
        !          1938: \global\advance \appendixno by 1 \message{\strappendix\appendixletter}%
        !          1939: \chapmacro {#1}{\strappendix\appendixletter}%
        !          1940: \gdef\thissection{#1}%
        !          1941: \gdef\thischaptername{#1}%
        !          1942: \xdef\thischapter{\strappendix\appendixletter: \noexpand\thischaptername}%
        !          1943: {\chapternofonts%
        !          1944: \edef\temp{{\realbackslash chapentry
        !          1945:   {#1}{Appendix \appendixletter}{\noexpand\folio}}}%
        !          1946: \escapechar=`\\%
        !          1947: \write \contentsfile \temp  %
        !          1948: \appendixnoderef %
        !          1949: \global\let\section = \appendixsec
        !          1950: \global\let\subsection = \appendixsubsec
        !          1951: \global\let\subsubsection = \appendixsubsubsec
        !          1952: }}
        !          1953:
        !          1954: \outer\def\top{\parsearg\unnumberedzzz}
        !          1955: \outer\def\unnumbered{\parsearg\unnumberedzzz}
        !          1956: \def\unnumberedzzz #1{\seccheck{unnumbered}%
        !          1957: \secno=0 \subsecno=0 \subsubsecno=0 \message{(#1)}
        !          1958: \unnumbchapmacro {#1}%
        !          1959: \gdef\thischapter{#1}\gdef\thissection{#1}%
        !          1960: {\chapternofonts%
        !          1961: \edef\temp{{\realbackslash unnumbchapentry {#1}{\noexpand\folio}}}%
        !          1962: \escapechar=`\\%
        !          1963: \write \contentsfile \temp  %
        !          1964: \unnumbnoderef %
        !          1965: \global\let\section = \unnumberedsec
        !          1966: \global\let\subsection = \unnumberedsubsec
        !          1967: \global\let\subsubsection = \unnumberedsubsubsec
        !          1968: }}
        !          1969:
        !          1970: \outer\def\numberedsec{\parsearg\seczzz}
        !          1971: \def\seczzz #1{\seccheck{section}%
        !          1972: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
        !          1973: \gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
        !          1974: {\chapternofonts%
        !          1975: \edef\temp{{\realbackslash secentry %
        !          1976: {#1}{\the\chapno}{\the\secno}{\noexpand\folio}}}%
        !          1977: \escapechar=`\\%
        !          1978: \write \contentsfile \temp %
        !          1979: \donoderef %
        !          1980: \penalty 10000 %
        !          1981: }}
        !          1982:
        !          1983: \outer\def\appendixsection{\parsearg\appendixsectionzzz}
        !          1984: \outer\def\appendixsec{\parsearg\appendixsectionzzz}
        !          1985: \def\appendixsectionzzz #1{\seccheck{appendixsection}%
        !          1986: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
        !          1987: \gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
        !          1988: {\chapternofonts%
        !          1989: \edef\temp{{\realbackslash secentry %
        !          1990: {#1}{\appendixletter}{\the\secno}{\noexpand\folio}}}%
        !          1991: \escapechar=`\\%
        !          1992: \write \contentsfile \temp %
        !          1993: \appendixnoderef %
        !          1994: \penalty 10000 %
        !          1995: }}
        !          1996:
        !          1997: \outer\def\unnumberedsec{\parsearg\unnumberedseczzz}
        !          1998: \def\unnumberedseczzz #1{\seccheck{unnumberedsec}%
        !          1999: \plainsecheading {#1}\gdef\thissection{#1}%
        !          2000: {\chapternofonts%
        !          2001: \edef\temp{{\realbackslash unnumbsecentry{#1}{\noexpand\folio}}}%
        !          2002: \escapechar=`\\%
        !          2003: \write \contentsfile \temp %
        !          2004: \unnumbnoderef %
        !          2005: \penalty 10000 %
        !          2006: }}
        !          2007:
        !          2008: \outer\def\numberedsubsec{\parsearg\numberedsubseczzz}
        !          2009: \def\numberedsubseczzz #1{\seccheck{subsection}%
        !          2010: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
        !          2011: \subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
        !          2012: {\chapternofonts%
        !          2013: \edef\temp{{\realbackslash subsecentry %
        !          2014: {#1}{\the\chapno}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
        !          2015: \escapechar=`\\%
        !          2016: \write \contentsfile \temp %
        !          2017: \donoderef %
        !          2018: \penalty 10000 %
        !          2019: }}
        !          2020:
        !          2021: \outer\def\appendixsubsec{\parsearg\appendixsubseczzz}
        !          2022: \def\appendixsubseczzz #1{\seccheck{appendixsubsec}%
        !          2023: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
        !          2024: \subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
        !          2025: {\chapternofonts%
        !          2026: \edef\temp{{\realbackslash subsecentry %
        !          2027: {#1}{\appendixletter}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
        !          2028: \escapechar=`\\%
        !          2029: \write \contentsfile \temp %
        !          2030: \appendixnoderef %
        !          2031: \penalty 10000 %
        !          2032: }}
        !          2033:
        !          2034: \outer\def\unnumberedsubsec{\parsearg\unnumberedsubseczzz}
        !          2035: \def\unnumberedsubseczzz #1{\seccheck{unnumberedsubsec}%
        !          2036: \plainsecheading {#1}\gdef\thissection{#1}%
        !          2037: {\chapternofonts%
        !          2038: \edef\temp{{\realbackslash unnumbsubsecentry{#1}{\noexpand\folio}}}%
        !          2039: \escapechar=`\\%
        !          2040: \write \contentsfile \temp %
        !          2041: \unnumbnoderef %
        !          2042: \penalty 10000 %
        !          2043: }}
        !          2044:
        !          2045: \outer\def\numberedsubsubsec{\parsearg\numberedsubsubseczzz}
        !          2046: \def\numberedsubsubseczzz #1{\seccheck{subsubsection}%
        !          2047: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
        !          2048: \subsubsecheading {#1}
        !          2049:   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
        !          2050: {\chapternofonts%
        !          2051: \edef\temp{{\realbackslash subsubsecentry %
        !          2052:   {#1}
        !          2053:   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}
        !          2054:   {\noexpand\folio}}}%
        !          2055: \escapechar=`\\%
        !          2056: \write \contentsfile \temp %
        !          2057: \donoderef %
        !          2058: \penalty 10000 %
        !          2059: }}
        !          2060:
        !          2061: \outer\def\appendixsubsubsec{\parsearg\appendixsubsubseczzz}
        !          2062: \def\appendixsubsubseczzz #1{\seccheck{appendixsubsubsec}%
        !          2063: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
        !          2064: \subsubsecheading {#1}
        !          2065:   {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
        !          2066: {\chapternofonts%
        !          2067: \edef\temp{{\realbackslash subsubsecentry{#1}%
        !          2068:   {\appendixletter}
        !          2069:   {\the\secno}{\the\subsecno}{\the\subsubsecno}{\noexpand\folio}}}%
        !          2070: \escapechar=`\\%
        !          2071: \write \contentsfile \temp %
        !          2072: \appendixnoderef %
        !          2073: \penalty 10000 %
        !          2074: }}
        !          2075:
        !          2076: \outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
        !          2077: \def\unnumberedsubsubseczzz #1{\seccheck{unnumberedsubsubsec}%
        !          2078: \plainsecheading {#1}\gdef\thissection{#1}%
        !          2079: {\chapternofonts%
        !          2080: \edef\temp{{\realbackslash unnumbsubsubsecentry{#1}{\noexpand\folio}}}%
        !          2081: \escapechar=`\\%
        !          2082: \write \contentsfile \temp %
        !          2083: \unnumbnoderef %
        !          2084: \penalty 10000 %
        !          2085: }}
        !          2086:
        !          2087: % These are variants which are not "outer", so they can appear in @ifinfo.
        !          2088: % Actually, they should now be obsolete; ordinary section commands should work.
        !          2089: \def\infotop{\parsearg\unnumberedzzz}
        !          2090: \def\infounnumbered{\parsearg\unnumberedzzz}
        !          2091: \def\infounnumberedsec{\parsearg\unnumberedseczzz}
        !          2092: \def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
        !          2093: \def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
        !          2094:
        !          2095: \def\infoappendix{\parsearg\appendixzzz}
        !          2096: \def\infoappendixsec{\parsearg\appendixseczzz}
        !          2097: \def\infoappendixsubsec{\parsearg\appendixsubseczzz}
        !          2098: \def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
        !          2099:
        !          2100: \def\infochapter{\parsearg\chapterzzz}
        !          2101: \def\infosection{\parsearg\sectionzzz}
        !          2102: \def\infosubsection{\parsearg\subsectionzzz}
        !          2103: \def\infosubsubsection{\parsearg\subsubsectionzzz}
        !          2104:
        !          2105: % These macros control what the section commands do, according
        !          2106: % to what kind of chapter we are in (ordinary, appendix, or unnumbered).
        !          2107: % Define them by default for a numbered chapter.
        !          2108: \global\let\section = \numberedsec
        !          2109: \global\let\subsection = \numberedsubsec
        !          2110: \global\let\subsubsection = \numberedsubsubsec
        !          2111:
        !          2112: % Define @majorheading, @heading and @subheading
        !          2113:
        !          2114: % NOTE on use of \vbox for chapter headings, section headings, and
        !          2115: % such:
        !          2116: %      1) We use \vbox rather than the earlier \line to permit
        !          2117: %         overlong headings to fold.
        !          2118: %      2) \hyphenpenalty is set to 10000 because hyphenation in a
        !          2119: %         heading is obnoxious; this forbids it.
        !          2120: %       3) Likewise, headings look best if no \parindent is used, and
        !          2121: %          if justification is not attempted.  Hence \raggedright.
        !          2122:
        !          2123:
        !          2124: \def\majorheading{\parsearg\majorheadingzzz}
        !          2125: \def\majorheadingzzz #1{%
        !          2126: {\advance\chapheadingskip by 10pt \chapbreak }%
        !          2127: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2128:                   \parindent=0pt\raggedright
        !          2129:                   \rm\mc #1\hfill}}\bigskip \par\penalty 200}
        !          2130:
        !          2131: \def\chapheading{\parsearg\chapheadingzzz}
        !          2132: \def\chapheadingzzz #1{\chapbreak %
        !          2133: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2134:                   \parindent=0pt\raggedright
        !          2135:                   \rm\mc #1\hfill}}\bigskip \par\penalty 200}
        !          2136:
        !          2137: \def\heading{\parsearg\secheadingi}
        !          2138:
        !          2139: \def\subheading{\parsearg\subsecheadingi}
        !          2140:
        !          2141: \def\subsubheading{\parsearg\subsubsecheadingi}
        !          2142:
        !          2143: % These macros generate a chapter, section, etc. heading only
        !          2144: % (including whitespace, linebreaking, etc. around it),
        !          2145: % given all the information in convenient, parsed form.
        !          2146:
        !          2147: %%% Args are the skip and penalty (usually negative)
        !          2148: \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
        !          2149:
        !          2150: \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
        !          2151:
        !          2152: %%% Define plain chapter starts, and page on/off switching for it
        !          2153: % Parameter controlling skip before chapter headings (if needed)
        !          2154:
        !          2155: \newskip \chapheadingskip \chapheadingskip = 30pt plus 8pt minus 4pt
        !          2156:
        !          2157: \def\chapbreak{\dobreak \chapheadingskip {-4000}}
        !          2158: \def\chappager{\par\vfill\supereject}
        !          2159: \def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
        !          2160:
        !          2161: \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
        !          2162:
        !          2163: \def\CHAPPAGoff{
        !          2164: \global\let\pchapsepmacro=\chapbreak
        !          2165: \global\let\pagealignmacro=\chappager}
        !          2166:
        !          2167: \def\CHAPPAGon{
        !          2168: \global\let\pchapsepmacro=\chappager
        !          2169: \global\let\pagealignmacro=\chappager
        !          2170: \global\def\HEADINGSon{\HEADINGSsingle}}
        !          2171:
        !          2172: \def\CHAPPAGodd{
        !          2173: \global\let\pchapsepmacro=\chapoddpage
        !          2174: \global\let\pagealignmacro=\chapoddpage
        !          2175: \global\def\HEADINGSon{\HEADINGSdouble}}
        !          2176:
        !          2177: \CHAPPAGon
        !          2178:
        !          2179: \def\CHAPFplain{
        !          2180: \global\let\chapmacro=\chfplain
        !          2181: \global\let\unnumbchapmacro=\unnchfplain}
        !          2182:
        !          2183: \def\chfplain #1#2{%
        !          2184:   \pchapsepmacro
        !          2185:   {%
        !          2186:     \chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2187:                      \parindent=0pt\raggedright
        !          2188:                      \rm\mc #2\enspace #1}%
        !          2189:   }%
        !          2190:   \bigskip
        !          2191:   \penalty5000
        !          2192: }
        !          2193:
        !          2194: \def\unnchfplain #1{%
        !          2195: \pchapsepmacro %
        !          2196: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2197:                   \parindent=0pt\raggedright
        !          2198:                   \rm\mc #1\hfill}}\bigskip \par\penalty 10000 %
        !          2199: }
        !          2200: \CHAPFplain % The default
        !          2201:
        !          2202: \def\unnchfopen #1{%
        !          2203: \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2204:                        \parindent=0pt\raggedright
        !          2205:                        \rm\mc #1\hfill}}\bigskip \par\penalty 10000 %
        !          2206: }
        !          2207:
        !          2208: \def\chfopen #1#2{\chapoddpage {\chapfonts
        !          2209: \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
        !          2210: \par\penalty 5000 %
        !          2211: }
        !          2212:
        !          2213: \def\CHAPFopen{
        !          2214: \global\let\chapmacro=\chfopen
        !          2215: \global\let\unnumbchapmacro=\unnchfopen}
        !          2216:
        !          2217: % Parameter controlling skip before section headings.
        !          2218:
        !          2219: \newskip \subsecheadingskip  \subsecheadingskip = 17pt plus 8pt minus 4pt
        !          2220: \def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
        !          2221:
        !          2222: \newskip \secheadingskip  \secheadingskip = 21pt plus 8pt minus 4pt
        !          2223: \def\secheadingbreak{\dobreak \secheadingskip {-1000}}
        !          2224:
        !          2225: % @paragraphindent  is defined for the Info formatting commands only.
        !          2226: \let\paragraphindent=\comment
        !          2227:
        !          2228: % Section fonts are the base font at magstep2, which produces
        !          2229: % a size a bit more than 14 points in the default situation.
        !          2230:
        !          2231: \def\secheading #1#2#3{\secheadingi {#2.#3\enspace #1}}
        !          2232: \def\plainsecheading #1{\secheadingi {#1}}
        !          2233: \def\secheadingi #1{{\advance \secheadingskip by \parskip %
        !          2234: \secheadingbreak}%
        !          2235: {\secfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2236:                  \parindent=0pt\raggedright
        !          2237:                  \rm\mc #1\hfill}}%
        !          2238: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
        !          2239:
        !          2240:
        !          2241: % Subsection fonts are the base font at magstep1,
        !          2242: % which produces a size of 12 points.
        !          2243:
        !          2244: \def\subsecheading #1#2#3#4{\subsecheadingi {#2.#3.#4\enspace #1}}
        !          2245: \def\subsecheadingi #1{{\advance \subsecheadingskip by \parskip %
        !          2246: \subsecheadingbreak}%
        !          2247: {\subsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2248:                      \parindent=0pt\raggedright
        !          2249:                      \rm\mc #1\hfill}}%
        !          2250: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
        !          2251:
        !          2252: \def\subsubsecfonts{\subsecfonts} % Maybe this should change:
        !          2253:                                  % Perhaps make sssec fonts scaled
        !          2254:                                  % magstep half
        !          2255: \def\subsubsecheading #1#2#3#4#5{\subsubsecheadingi {#2.#3.#4.#5\enspace #1}}
        !          2256: \def\subsubsecheadingi #1{{\advance \subsecheadingskip by \parskip %
        !          2257: \subsecheadingbreak}%
        !          2258: {\subsubsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2259:                        \parindent=0pt\raggedright
        !          2260:                        \rm\mc #1\hfill}}%
        !          2261: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000}
        !          2262:
        !          2263:
        !          2264: \message{toc printing,}
        !          2265:
        !          2266: % Finish up the main text and prepare to read what we've written
        !          2267: % to \contentsfile.
        !          2268:
        !          2269: \newskip\contentsrightmargin \contentsrightmargin=1in
        !          2270: \def\startcontents#1{%
        !          2271:    \ifnum \pageno>0
        !          2272:       \pageno = -1             % Request roman numbered pages.
        !          2273:    \fi
        !          2274:    \pagealignmacro
        !          2275:    \immediate\closeout \contentsfile
        !          2276:    % Don't need to put `Contents' or `Short Contents' in the headline.
        !          2277:    % It is abundantly clear what they are.
        !          2278:    \unnumbchapmacro{#1}\def\thischapter{}%
        !          2279:    \begingroup                 % Set up to handle contents files properly.
        !          2280:       \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11
        !          2281:       \raggedbottom             % Worry more about breakpoints than the bottom.
        !          2282:       \advance\hsize by -\contentsrightmargin % Don't use the full line length.
        !          2283: }
        !          2284:
        !          2285:
        !          2286: % Normal (long) toc.
        !          2287: \outer\def\contents{%
        !          2288:    \startcontents{\strtoc}%
        !          2289:       \input \jobname.toc
        !          2290:    \endgroup
        !          2291:    \vfill \eject
        !          2292: }
        !          2293:
        !          2294: % And just the chapters.
        !          2295: \outer\def\summarycontents{%
        !          2296:    \startcontents{\strstoc}%
        !          2297:       %
        !          2298:       \let\chapentry = \shortchapentry
        !          2299:       \let\unnumbchapentry = \shortunnumberedentry
        !          2300:       % We want a true roman here for the page numbers.
        !          2301:       \secfonts
        !          2302:       \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl
        !          2303:       \let\mc=\shortcontmc \let\gt=\shortcontgt
        !          2304:       \rm\mc
        !          2305:       \advance\baselineskip by 1pt % Open it up a little.
        !          2306:       \def\secentry ##1##2##3##4{}
        !          2307:       \def\unnumbsecentry ##1##2{}
        !          2308:       \def\subsecentry ##1##2##3##4##5{}
        !          2309:       \def\unnumbsubsecentry ##1##2{}
        !          2310:       \def\subsubsecentry ##1##2##3##4##5##6{}
        !          2311:       \def\unnumbsubsubsecentry ##1##2{}
        !          2312:       \input \jobname.toc
        !          2313:    \endgroup
        !          2314:    \vfill \eject
        !          2315: }
        !          2316: \let\shortcontents = \summarycontents
        !          2317:
        !          2318: % These macros generate individual entries in the table of contents.
        !          2319: % The first argument is the chapter or section name.
        !          2320: % The last argument is the page number.
        !          2321: % The arguments in between are the chapter number, section number, ...
        !          2322:
        !          2323: % Chapter-level things, for both the long and short contents.
        !          2324: \def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
        !          2325:
        !          2326: % See comments in \dochapentry re vbox and related settings
        !          2327: \def\shortchapentry#1#2#3{%
        !          2328:    \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2329:     \parindent=0pt\strut\raggedright
        !          2330:     {#2\labelspace #1}\dotfill\doshortpageno{#3}}%
        !          2331: }
        !          2332:
        !          2333: \def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
        !          2334: \def\shortunnumberedentry#1#2{%
        !          2335:    \vbox{\hyphenpenalty=10000\tolerance=5000
        !          2336:     \parindent=0pt\strut\raggedright
        !          2337:     #1\dotfill\doshortpageno{#2}}%
        !          2338: }
        !          2339:
        !          2340: % Sections.
        !          2341: \def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
        !          2342: \def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
        !          2343:
        !          2344: % Subsections.
        !          2345: \def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
        !          2346: \def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
        !          2347:
        !          2348: % And subsubsections.
        !          2349: \def\subsubsecentry#1#2#3#4#5#6{%
        !          2350:   \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
        !          2351: \def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
        !          2352:
        !          2353:
        !          2354: % This parameter controls the indentation of the various levels.
        !          2355: \newdimen\tocindent \tocindent = 3pc
        !          2356:
        !          2357: % Now for the actual typesetting. In all these, #1 is the text and #2 is the
        !          2358: % page number.
        !          2359: %
        !          2360: % If the toc has to be broken over pages, we would want to be at chapters
        !          2361: % if at all possible; hence the \penalty.
        !          2362: \def\dochapentry#1#2{%
        !          2363:    \penalty-300 \vskip\baselineskip
        !          2364:    % This \vbox (and similar ones in dosecentry etc.) used to be a
        !          2365:    % \line; changed to permit linebreaks for long headings.  See
        !          2366:    % comments above \majorheading.  Here we also use \strut to
        !          2367:    % keep the top end of the vbox from jamming up against the previous
        !          2368:    % entry in the table of contents.
        !          2369:    \vbox{\chapentryfonts
        !          2370:      \hyphenpenalty=10000\tolerance=5000 % this line and next introduced
        !          2371:      \parindent=0pt\strut\raggedright    % with \line -> \vbox change
        !          2372:      #1\dotfill
        !          2373:      \dopageno{#2}}%
        !          2374:    \nobreak\vskip .25\baselineskip
        !          2375: }
        !          2376:
        !          2377: \def\dosecentry#1#2{%
        !          2378:    \vbox{\secentryfonts \leftskip=\tocindent
        !          2379:     \hyphenpenalty=10000\tolerance=5000
        !          2380:     \parindent=0pt\strut\raggedright #1\dotfill
        !          2381:     \dopageno{#2}}%
        !          2382: }
        !          2383:
        !          2384: \def\dosubsecentry#1#2{%
        !          2385:    \vbox{\subsecentryfonts \leftskip=2\tocindent
        !          2386:     \hyphenpenalty=10000\tolerance=5000
        !          2387:     \parindent=0pt\strut\raggedright #1\dotfill
        !          2388:     \dopageno{#2}}%
        !          2389: }
        !          2390:
        !          2391: \def\dosubsubsecentry#1#2{%
        !          2392:    \vbox{\subsubsecentryfonts \leftskip=3\tocindent
        !          2393:     \hyphenpenalty=10000\tolerance=5000
        !          2394:     \parindent=0pt\strut\raggedright #1\dotfill
        !          2395:     \dopageno{#2}}%
        !          2396: }
        !          2397:
        !          2398: % Space between chapter (or whatever) number and the title.
        !          2399: \def\labelspace{\hskip1em \relax}
        !          2400:
        !          2401: \def\dopageno#1{{\rm\mc #1}}
        !          2402: \def\doshortpageno#1{{\rm\mc #1}}
        !          2403:
        !          2404: \def\chapentryfonts{\secfonts \rm\mc}
        !          2405: \def\secentryfonts{\textfonts}
        !          2406: \let\subsecentryfonts = \textfonts
        !          2407: \let\subsubsecentryfonts = \textfonts
        !          2408:
        !          2409:
        !          2410: \message{environments,}
        !          2411:
        !          2412: % Since these characters are used in examples, it should be an even number of
        !          2413: % \tt widths. Each \tt character is 1en, so two makes it 1em.
        !          2414: % Furthermore, these definitions must come after we define our fonts.
        !          2415: \newbox\dblarrowbox    \newbox\longdblarrowbox
        !          2416: \newbox\pushcharbox    \newbox\bullbox
        !          2417: \newbox\equivbox       \newbox\errorbox
        !          2418:
        !          2419: \let\ptexequiv = \equiv
        !          2420:
        !          2421: %{\tentt
        !          2422: %\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
        !          2423: %\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
        !          2424: %\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
        !          2425: %\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
        !          2426: % Adapted from the manmac format (p.420 of TeXbook)
        !          2427: %\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
        !          2428: %                                      depth .1ex\hfil}
        !          2429: %}
        !          2430:
        !          2431: \def\point{$\star$}
        !          2432:
        !          2433: \def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
        !          2434: \def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
        !          2435: \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
        !          2436:
        !          2437: \def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
        !          2438:
        !          2439: % Adapted from the TeXbook's \boxit.
        !          2440: {\tentt \global\dimen0 = 3em}% Width of the box.
        !          2441: \dimen2 = .55pt % Thickness of rules
        !          2442: % The text. (`r' is open on the right, `e' somewhat less so on the left.)
        !          2443: \setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
        !          2444:
        !          2445: \global\setbox\errorbox=\hbox to \dimen0{\hfil
        !          2446:    \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
        !          2447:    \advance\hsize by -2\dimen2 % Rules.
        !          2448:    \vbox{
        !          2449:       \hrule height\dimen2
        !          2450:       \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
        !          2451:          \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
        !          2452:          \kern3pt\vrule width\dimen2}% Space to right.
        !          2453:       \hrule height\dimen2}
        !          2454:     \hfil}
        !          2455:
        !          2456: % The @error{} command.
        !          2457: \def\error{\leavevmode\lower.7ex\copy\errorbox}
        !          2458:
        !          2459: % @tex ... @end tex    escapes into raw Tex temporarily.
        !          2460: % One exception: @ is still an escape character, so that @end tex works.
        !          2461: % But \@ or @@ will get a plain tex @ character.
        !          2462:
        !          2463: \def\tex{\begingroup
        !          2464: \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
        !          2465: \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
        !          2466: \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
        !          2467: \catcode `\%=14
        !          2468: \catcode 43=12
        !          2469: \catcode`\"=12
        !          2470: \catcode`\==12
        !          2471: \catcode`\|=12
        !          2472: \catcode`\<=12
        !          2473: \catcode`\>=12
        !          2474: \escapechar=`\\
        !          2475: %
        !          2476: \let\{=\ptexlbrace
        !          2477: \let\}=\ptexrbrace
        !          2478: \let\.=\ptexdot
        !          2479: \let\*=\ptexstar
        !          2480: \let\dots=\ptexdots
        !          2481: \def\@{@}%
        !          2482: \let\bullet=\ptexbullet
        !          2483: \let\b=\ptexb \let\c=\ptexc \let\i=\ptexi \let\t=\ptext \let\l=\ptexl
        !          2484: \let\L=\ptexL
        !          2485: %
        !          2486: \let\Etex=\endgroup}
        !          2487:
        !          2488: % Define @lisp ... @endlisp.
        !          2489: % @lisp does a \begingroup so it can rebind things,
        !          2490: % including the definition of @endlisp (which normally is erroneous).
        !          2491:
        !          2492: % Amount to narrow the margins by for @lisp.
        !          2493: \newskip\lispnarrowing \lispnarrowing=0.4in
        !          2494:
        !          2495: % This is the definition that ^M gets inside @lisp
        !          2496: % phr: changed space to \null, to avoid overfull hbox problems.
        !          2497: {\obeyspaces%
        !          2498: \gdef\lisppar{\null\endgraf}}
        !          2499:
        !          2500: % Cause \obeyspaces to make each Space cause a word-separation
        !          2501: % rather than the default which is that it acts punctuation.
        !          2502: % This is because space in tt font looks funny.
        !          2503: {\obeyspaces %
        !          2504: \gdef\sepspaces{\def {\ }}}
        !          2505:
        !          2506: \newskip\aboveenvskipamount \aboveenvskipamount= 0pt
        !          2507: \def\aboveenvbreak{{\advance\aboveenvskipamount by \parskip
        !          2508: \endgraf \ifdim\lastskip<\aboveenvskipamount
        !          2509: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}}
        !          2510:
        !          2511: \def\afterenvbreak{\endgraf \ifdim\lastskip<\aboveenvskipamount
        !          2512: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}
        !          2513:
        !          2514: % \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins.
        !          2515: \let\nonarrowing=\relax
        !          2516:
        !          2517: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
        !          2518: % \cartouche: draw rectangle w/rounded corners around argument
        !          2519: \font\circle=lcircle10
        !          2520: \newdimen\circthick
        !          2521: \newdimen\cartouter\newdimen\cartinner
        !          2522: \newskip\normbskip\newskip\normpskip\newskip\normlskip
        !          2523: \circthick=\fontdimen8\circle
        !          2524: %
        !          2525: \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
        !          2526: \def\ctr{{\hskip 6pt\circle\char'010}}
        !          2527: \def\cbl{{\circle\char'012\hskip -6pt}}
        !          2528: \def\cbr{{\hskip 6pt\circle\char'011}}
        !          2529: \def\carttop{\hbox to \cartouter{\hskip\lskip
        !          2530:        \ctl\leaders\hrule height\circthick\hfil\ctr
        !          2531:        \hskip\rskip}}
        !          2532: \def\cartbot{\hbox to \cartouter{\hskip\lskip
        !          2533:        \cbl\leaders\hrule height\circthick\hfil\cbr
        !          2534:        \hskip\rskip}}
        !          2535: %
        !          2536: \newskip\lskip\newskip\rskip
        !          2537:
        !          2538: \long\def\cartouche{%
        !          2539: \begingroup
        !          2540:        \lskip=\leftskip \rskip=\rightskip
        !          2541:        \leftskip=0pt\rightskip=0pt %we want these *outside*.
        !          2542:        \cartinner=\hsize \advance\cartinner by-\lskip
        !          2543:                          \advance\cartinner by-\rskip
        !          2544:        \cartouter=\hsize
        !          2545:        \advance\cartouter by 18pt % allow for 3pt kerns on either
        !          2546: %                                   side, and for 6pt waste from
        !          2547: %                                   each corner char
        !          2548:        \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
        !          2549:        % Flag to tell @lisp, etc., not to narrow margin.
        !          2550:        \let\nonarrowing=\comment
        !          2551:        \vbox\bgroup
        !          2552:                \baselineskip=0pt\parskip=0pt\lineskip=0pt
        !          2553:                \carttop
        !          2554:                \hbox\bgroup
        !          2555:                        \hskip\lskip
        !          2556:                        \vrule\kern3pt
        !          2557:                        \vbox\bgroup
        !          2558:                                \hsize=\cartinner
        !          2559:                                \kern3pt
        !          2560:                                \begingroup
        !          2561:                                        \baselineskip=\normbskip
        !          2562:                                        \lineskip=\normlskip
        !          2563:                                        \parskip=\normpskip
        !          2564:                                        \vskip -\parskip
        !          2565: \def\Ecartouche{%
        !          2566:                                \endgroup
        !          2567:                                \kern3pt
        !          2568:                        \egroup
        !          2569:                        \kern3pt\vrule
        !          2570:                        \hskip\rskip
        !          2571:                \egroup
        !          2572:                \cartbot
        !          2573:        \egroup
        !          2574: \endgroup
        !          2575: }}
        !          2576:
        !          2577: \def\lisp{\aboveenvbreak
        !          2578: \begingroup\inENV % This group ends at the end of the @lisp body
        !          2579: \hfuzz=12truept % Don't be fussy
        !          2580: % Make spaces be word-separators rather than space tokens.
        !          2581: \sepspaces %
        !          2582: % Single space lines
        !          2583: \singlespace %
        !          2584: % The following causes blank lines not to be ignored
        !          2585: % by adding a space to the end of each line.
        !          2586: \let\par=\lisppar
        !          2587: \def\Elisp{\endgroup\afterenvbreak}%
        !          2588: \parskip=0pt
        !          2589: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2590: % at next level down.
        !          2591: \ifx\nonarrowing\relax
        !          2592: \advance \leftskip by \lispnarrowing
        !          2593: \exdentamount=\lispnarrowing
        !          2594: \let\exdent=\nofillexdent
        !          2595: \let\nonarrowing=\relax
        !          2596: \fi
        !          2597: \parindent=0pt
        !          2598: \obeyspaces \obeylines \tt \rawbackslash
        !          2599: \def\next##1{}\next}
        !          2600:
        !          2601:
        !          2602: \let\example=\lisp
        !          2603: \def\Eexample{\Elisp}
        !          2604:
        !          2605: \let\smallexample=\lisp
        !          2606: \def\Esmallexample{\Elisp}
        !          2607:
        !          2608: % Macro for 9 pt. examples, necessary to print with 5" lines.
        !          2609: % From Pavel@xerox.  This is not really used unless the
        !          2610: % @smallbook command is given.
        !          2611:
        !          2612: \def\smalllispx{\aboveenvbreak\begingroup\inENV
        !          2613: %                      This group ends at the end of the @lisp body
        !          2614: \hfuzz=12truept % Don't be fussy
        !          2615: % Make spaces be word-separators rather than space tokens.
        !          2616: \sepspaces %
        !          2617: % Single space lines
        !          2618: \singlespace %
        !          2619: % The following causes blank lines not to be ignored
        !          2620: % by adding a space to the end of each line.
        !          2621: \let\par=\lisppar
        !          2622: \def\Esmalllisp{\endgroup\afterenvbreak}%
        !          2623: %%%% Smaller baseline skip for small examples.
        !          2624: \baselineskip 10pt
        !          2625: \parskip=0pt
        !          2626: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2627: % at next level down.
        !          2628: \ifx\nonarrowing\relax
        !          2629: \advance \leftskip by \lispnarrowing
        !          2630: \exdentamount=\lispnarrowing
        !          2631: \let\exdent=\nofillexdent
        !          2632: \let\nonarrowing=\relax
        !          2633: \fi
        !          2634: \parindent=0pt
        !          2635: \obeyspaces \obeylines \ninett \indexfonts \rawbackslash
        !          2636: \def\next##1{}\next}
        !          2637:
        !          2638: % This is @display; same as @lisp except use roman font.
        !          2639:
        !          2640: \def\display{\begingroup\inENV %This group ends at the end of the @display body
        !          2641: \aboveenvbreak
        !          2642: % Make spaces be word-separators rather than space tokens.
        !          2643: \sepspaces %
        !          2644: % Single space lines
        !          2645: \singlespace %
        !          2646: % The following causes blank lines not to be ignored
        !          2647: % by adding a space to the end of each line.
        !          2648: \let\par=\lisppar
        !          2649: \def\Edisplay{\endgroup\afterenvbreak}%
        !          2650: \parskip=0pt
        !          2651: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2652: % at next level down.
        !          2653: \ifx\nonarrowing\relax
        !          2654: \advance \leftskip by \lispnarrowing
        !          2655: \exdentamount=\lispnarrowing
        !          2656: \let\exdent=\nofillexdent
        !          2657: \let\nonarrowing=\relax
        !          2658: \fi
        !          2659: \parindent=0pt
        !          2660: \obeyspaces \obeylines
        !          2661: \def\next##1{}\next}
        !          2662:
        !          2663: % This is @format; same as @lisp except use roman font and don't narrow margins
        !          2664:
        !          2665: \def\format{\begingroup\inENV %This group ends at the end of the @format body
        !          2666: \aboveenvbreak
        !          2667: % Make spaces be word-separators rather than space tokens.
        !          2668: \sepspaces %
        !          2669: \singlespace %
        !          2670: % The following causes blank lines not to be ignored
        !          2671: % by adding a space to the end of each line.
        !          2672: \let\par=\lisppar
        !          2673: \def\Eformat{\endgroup\afterenvbreak}
        !          2674: \parskip=0pt \parindent=0pt
        !          2675: \obeyspaces \obeylines
        !          2676: \def\next##1{}\next}
        !          2677:
        !          2678: % @flushleft and @flushright
        !          2679:
        !          2680: \def\flushleft{%
        !          2681: \begingroup\inENV %This group ends at the end of the @format body
        !          2682: \aboveenvbreak
        !          2683: % Make spaces be word-separators rather than space tokens.
        !          2684: \sepspaces %
        !          2685: % The following causes blank lines not to be ignored
        !          2686: % by adding a space to the end of each line.
        !          2687: % This also causes @ to work when the directive name
        !          2688: % is terminated by end of line.
        !          2689: \let\par=\lisppar
        !          2690: \def\Eflushleft{\endgroup\afterenvbreak}%
        !          2691: \parskip=0pt \parindent=0pt
        !          2692: \obeyspaces \obeylines
        !          2693: \def\next##1{}\next}
        !          2694:
        !          2695: \def\flushright{%
        !          2696: \begingroup\inENV %This group ends at the end of the @format body
        !          2697: \aboveenvbreak
        !          2698: % Make spaces be word-separators rather than space tokens.
        !          2699: \sepspaces %
        !          2700: % The following causes blank lines not to be ignored
        !          2701: % by adding a space to the end of each line.
        !          2702: % This also causes @ to work when the directive name
        !          2703: % is terminated by end of line.
        !          2704: \let\par=\lisppar
        !          2705: \def\Eflushright{\endgroup\afterenvbreak}%
        !          2706: \parskip=0pt \parindent=0pt
        !          2707: \advance \leftskip by 0pt plus 1fill
        !          2708: \obeyspaces \obeylines
        !          2709: \def\next##1{}\next}
        !          2710:
        !          2711: % @quotation - narrow the margins.
        !          2712:
        !          2713: \def\quotation{%
        !          2714: \begingroup\inENV %This group ends at the end of the @quotation body
        !          2715: {\parskip=0pt  % because we will skip by \parskip too, later
        !          2716: \aboveenvbreak}%
        !          2717: \singlespace
        !          2718: \parindent=0pt
        !          2719: \def\Equotation{\par\endgroup\afterenvbreak}%
        !          2720: % @cartouche defines \nonarrowing to inhibit narrowing
        !          2721: % at next level down.
        !          2722: \ifx\nonarrowing\relax
        !          2723: \advance \leftskip by \lispnarrowing
        !          2724: \advance \rightskip by \lispnarrowing
        !          2725: \exdentamount=\lispnarrowing
        !          2726: \let\nonarrowing=\relax
        !          2727: \fi}
        !          2728:
        !          2729: \message{defuns,}
        !          2730: % Define formatter for defuns
        !          2731: % First, allow user to change definition object font (\df) internally
        !          2732: \def\setdeffont #1 {\csname DEF#1\endcsname}
        !          2733:
        !          2734: \newskip\defbodyindent \defbodyindent=.4in
        !          2735: \newskip\defargsindent \defargsindent=50pt
        !          2736: \newskip\deftypemargin \deftypemargin=12pt
        !          2737: \newskip\deflastargmargin \deflastargmargin=18pt
        !          2738:
        !          2739: \newcount\parencount
        !          2740: % define \functionparens, which makes ( and ) and & do special things.
        !          2741: % \functionparens affects the group it is contained in.
        !          2742: \def\activeparens{%
        !          2743: \catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
        !          2744: \catcode`\[=\active \catcode`\]=\active}
        !          2745: {\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
        !          2746: \gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
        !          2747: \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
        !          2748:
        !          2749: % Definitions of (, ) and & used in args for functions.
        !          2750: % This is the definition of ( outside of all parentheses.
        !          2751: \gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested %
        !          2752: \global\advance\parencount by 1 }
        !          2753: %
        !          2754: % This is the definition of ( when already inside a level of parens.
        !          2755: \gdef\opnested{\char`\(\global\advance\parencount by 1 }
        !          2756: %
        !          2757: \gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
        !          2758: % also in that case restore the outer-level definition of (.
        !          2759: \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
        !          2760: \global\advance \parencount by -1 }
        !          2761: % If we encounter &foo, then turn on ()-hacking afterwards
        !          2762: \gdef\amprm#1 {{\rm\&#1}\let(=\oprm \let)=\clrm\ }
        !          2763: %
        !          2764: \gdef\normalparens{\boldbrax\let&=\ampnr}
        !          2765: } % End of definition inside \activeparens
        !          2766: %% These parens (in \boldbrax) actually are a little bolder than the
        !          2767: %% contained text.  This is especially needed for [ and ]
        !          2768: \def\opnr{{\sf\char`\(}} \def\clnr{{\sf\char`\)}} \def\ampnr{\&}
        !          2769: \def\lbrb{{\bf\char`\[}} \def\rbrb{{\bf\char`\]}}
        !          2770:
        !          2771: % First, defname, which formats the header line itself.
        !          2772: % #1 should be the function name.
        !          2773: % #2 should be the type of definition, such as "Function".
        !          2774:
        !          2775: \def\defname #1#2{%
        !          2776: % Get the values of \leftskip and \rightskip as they were
        !          2777: % outside the @def...
        !          2778: \dimen2=\leftskip
        !          2779: \advance\dimen2 by -\defbodyindent
        !          2780: \dimen3=\rightskip
        !          2781: \advance\dimen3 by -\defbodyindent
        !          2782: \noindent        %
        !          2783: \setbox0=\hbox{\hskip \deflastargmargin{\rm\mc #2}\hskip \deftypemargin}%
        !          2784: \dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
        !          2785: \dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
        !          2786: \parshape 2 0in \dimen0 \defargsindent \dimen1     %
        !          2787: % Now output arg 2 ("Function" or some such)
        !          2788: % ending at \deftypemargin from the right margin,
        !          2789: % but stuck inside a box of width 0 so it does not interfere with linebreaking
        !          2790: {% Adjust \hsize to exclude the ambient margins,
        !          2791: % so that \rightline will obey them.
        !          2792: \advance \hsize by -\dimen2 \advance \hsize by -\dimen3
        !          2793: \rlap{\rightline{{\rm\mc #2}\hskip \deftypemargin}}}%
        !          2794: % Make all lines underfull and no complaints:
        !          2795: \tolerance=10000 \hbadness=10000
        !          2796: \advance\leftskip by -\defbodyindent
        !          2797: \exdentamount=\defbodyindent
        !          2798: {\df #1}\enskip        % Generate function name
        !          2799: }
        !          2800:
        !          2801: % Actually process the body of a definition
        !          2802: % #1 should be the terminating control sequence, such as \Edefun.
        !          2803: % #2 should be the "another name" control sequence, such as \defunx.
        !          2804: % #3 should be the control sequence that actually processes the header,
        !          2805: %    such as \defunheader.
        !          2806:
        !          2807: \def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
        !          2808: \medbreak %
        !          2809: % Define the end token that this defining construct specifies
        !          2810: % so that it will exit this group.
        !          2811: \def#1{\endgraf\endgroup\medbreak}%
        !          2812: \def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
        !          2813: \parindent=0in
        !          2814: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2815: \exdentamount=\defbodyindent
        !          2816: \begingroup %
        !          2817: \catcode 61=\active %
        !          2818: \obeylines\activeparens\spacesplit#3}
        !          2819:
        !          2820: \def\defmethparsebody #1#2#3#4 {\begingroup\inENV %
        !          2821: \medbreak %
        !          2822: % Define the end token that this defining construct specifies
        !          2823: % so that it will exit this group.
        !          2824: \def#1{\endgraf\endgroup\medbreak}%
        !          2825: \def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
        !          2826: \parindent=0in
        !          2827: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2828: \exdentamount=\defbodyindent
        !          2829: \begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
        !          2830:
        !          2831: \def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
        !          2832: \medbreak %
        !          2833: % Define the end token that this defining construct specifies
        !          2834: % so that it will exit this group.
        !          2835: \def#1{\endgraf\endgroup\medbreak}%
        !          2836: \def#2##1 ##2 {\def#4{##1}%
        !          2837: \begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
        !          2838: \parindent=0in
        !          2839: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2840: \exdentamount=\defbodyindent
        !          2841: \begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
        !          2842:
        !          2843: % These parsing functions are similar to the preceding ones
        !          2844: % except that they do not make parens into active characters.
        !          2845: % These are used for "variables" since they have no arguments.
        !          2846:
        !          2847: \def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
        !          2848: \medbreak %
        !          2849: % Define the end token that this defining construct specifies
        !          2850: % so that it will exit this group.
        !          2851: \def#1{\endgraf\endgroup\medbreak}%
        !          2852: \def#2{\begingroup\obeylines\spacesplit#3}%
        !          2853: \parindent=0in
        !          2854: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2855: \exdentamount=\defbodyindent
        !          2856: \begingroup %
        !          2857: \catcode 61=\active %
        !          2858: \obeylines\spacesplit#3}
        !          2859:
        !          2860: \def\defvrparsebody #1#2#3#4 {\begingroup\inENV %
        !          2861: \medbreak %
        !          2862: % Define the end token that this defining construct specifies
        !          2863: % so that it will exit this group.
        !          2864: \def#1{\endgraf\endgroup\medbreak}%
        !          2865: \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}%
        !          2866: \parindent=0in
        !          2867: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2868: \exdentamount=\defbodyindent
        !          2869: \begingroup\obeylines\spacesplit{#3{#4}}}
        !          2870:
        !          2871: \def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV %
        !          2872: \medbreak %
        !          2873: % Define the end token that this defining construct specifies
        !          2874: % so that it will exit this group.
        !          2875: \def#1{\endgraf\endgroup\medbreak}%
        !          2876: \def#2##1 ##2 {\def#4{##1}%
        !          2877: \begingroup\obeylines\spacesplit{#3{##2}}}%
        !          2878: \parindent=0in
        !          2879: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
        !          2880: \exdentamount=\defbodyindent
        !          2881: \begingroup\obeylines\spacesplit{#3{#5}}}
        !          2882:
        !          2883: % Split up #2 at the first space token.
        !          2884: % call #1 with two arguments:
        !          2885: %  the first is all of #2 before the space token,
        !          2886: %  the second is all of #2 after that space token.
        !          2887: % If #2 contains no space token, all of it is passed as the first arg
        !          2888: % and the second is passed as empty.
        !          2889:
        !          2890: {\obeylines
        !          2891: \gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
        !          2892: \long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
        !          2893: \ifx\relax #3%
        !          2894: #1{#2}{}\else #1{#2}{#3#4}\fi}}
        !          2895:
        !          2896: % So much for the things common to all kinds of definitions.
        !          2897:
        !          2898: % Define @defun.
        !          2899:
        !          2900: % First, define the processing that is wanted for arguments of \defun
        !          2901: % Use this to expand the args and terminate the paragraph they make up
        !          2902:
        !          2903: \def\defunargs #1{\functionparens \sl
        !          2904: % Expand, preventing hyphenation at `-' chars.
        !          2905: % Note that groups don't affect changes in \hyphenchar.
        !          2906: \hyphenchar\tensl=0
        !          2907: #1%
        !          2908: \hyphenchar\tensl=45
        !          2909: \ifnum\parencount=0 \else \errmessage{unbalanced parens in @def arguments}\fi%
        !          2910: \interlinepenalty=10000
        !          2911: \advance\rightskip by 0pt plus 1fil
        !          2912: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
        !          2913: }
        !          2914:
        !          2915: \def\deftypefunargs #1{%
        !          2916: % Expand, preventing hyphenation at `-' chars.
        !          2917: % Note that groups don't affect changes in \hyphenchar.
        !          2918: \functionparens
        !          2919: \code{#1}%
        !          2920: \interlinepenalty=10000
        !          2921: \advance\rightskip by 0pt plus 1fil
        !          2922: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
        !          2923: }
        !          2924:
        !          2925: % Do complete processing of one @defun or @defunx line already parsed.
        !          2926:
        !          2927: % @deffn Command forward-char nchars
        !          2928:
        !          2929: \def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
        !          2930:
        !          2931: \def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
        !          2932: \begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
        !          2933: \catcode 61=\other % Turn off change made in \defparsebody
        !          2934: }
        !          2935:
        !          2936: % @defun == @deffn Function
        !          2937:
        !          2938: \def\defun{\defparsebody\Edefun\defunx\defunheader}
        !          2939:
        !          2940: \def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2941: \begingroup\defname {#1}{Function}%
        !          2942: \defunargs {#2}\endgroup %
        !          2943: \catcode 61=\other % Turn off change made in \defparsebody
        !          2944: }
        !          2945:
        !          2946: % @deftypefun int foobar (int @var{foo}, float @var{bar})
        !          2947:
        !          2948: \def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
        !          2949:
        !          2950: % #1 is the data type.  #2 is the name and args.
        !          2951: \def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
        !          2952: % #1 is the data type, #2 the name, #3 the args.
        !          2953: \def\deftypefunheaderx #1#2 #3\relax{%
        !          2954: \doind {fn}{\code{#2}}% Make entry in function index
        !          2955: \begingroup\defname {\code{#1} #2}{Function}%
        !          2956: \deftypefunargs {#3}\endgroup %
        !          2957: \catcode 61=\other % Turn off change made in \defparsebody
        !          2958: }
        !          2959:
        !          2960: % @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
        !          2961:
        !          2962: \def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
        !          2963:
        !          2964: % #1 is the classification.  #2 is the data type.  #3 is the name and args.
        !          2965: \def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
        !          2966: % #1 is the classification, #2 the data type, #3 the name, #4 the args.
        !          2967: \def\deftypefnheaderx #1#2#3 #4\relax{%
        !          2968: \doind {fn}{\code{#3}}% Make entry in function index
        !          2969: \begingroup\defname {\code{#2} #3}{#1}%
        !          2970: \deftypefunargs {#4}\endgroup %
        !          2971: \catcode 61=\other % Turn off change made in \defparsebody
        !          2972: }
        !          2973:
        !          2974: % @defmac == @deffn Macro
        !          2975:
        !          2976: \def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
        !          2977:
        !          2978: \def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2979: \begingroup\defname {#1}{Macro}%
        !          2980: \defunargs {#2}\endgroup %
        !          2981: \catcode 61=\other % Turn off change made in \defparsebody
        !          2982: }
        !          2983:
        !          2984: % @defspec == @deffn Special Form
        !          2985:
        !          2986: \def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
        !          2987:
        !          2988: \def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
        !          2989: \begingroup\defname {#1}{Special Form}%
        !          2990: \defunargs {#2}\endgroup %
        !          2991: \catcode 61=\other % Turn off change made in \defparsebody
        !          2992: }
        !          2993:
        !          2994: % This definition is run if you use @defunx
        !          2995: % anywhere other than immediately after a @defun or @defunx.
        !          2996:
        !          2997: \def\deffnx #1 {\errmessage{@deffnx in invalid context}}
        !          2998: \def\defunx #1 {\errmessage{@defunx in invalid context}}
        !          2999: \def\defmacx #1 {\errmessage{@defmacx in invalid context}}
        !          3000: \def\defspecx #1 {\errmessage{@defspecx in invalid context}}
        !          3001: \def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
        !          3002: \def\deftypeunx #1 {\errmessage{@deftypeunx in invalid context}}
        !          3003:
        !          3004: % @defmethod, and so on
        !          3005:
        !          3006: % @defop {Funny Method} foo-class frobnicate argument
        !          3007:
        !          3008: \def\defop #1 {\def\defoptype{#1}%
        !          3009: \defopparsebody\Edefop\defopx\defopheader\defoptype}
        !          3010:
        !          3011: \def\defopheader #1#2#3{%
        !          3012: \dosubind {fn}{\code{#2}}{on #1}% Make entry in function index
        !          3013: \begingroup\defname {#2}{\defoptype{} on #1}%
        !          3014: \defunargs {#3}\endgroup %
        !          3015: }
        !          3016:
        !          3017: % @defmethod == @defop Method
        !          3018:
        !          3019: \def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
        !          3020:
        !          3021: \def\defmethodheader #1#2#3{%
        !          3022: \dosubind {fn}{\code{#2}}{on #1}% entry in function index
        !          3023: \begingroup\defname {#2}{Method on #1}%
        !          3024: \defunargs {#3}\endgroup %
        !          3025: }
        !          3026:
        !          3027: % @defcv {Class Option} foo-class foo-flag
        !          3028:
        !          3029: \def\defcv #1 {\def\defcvtype{#1}%
        !          3030: \defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
        !          3031:
        !          3032: \def\defcvarheader #1#2#3{%
        !          3033: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
        !          3034: \begingroup\defname {#2}{\defcvtype{} of #1}%
        !          3035: \defvarargs {#3}\endgroup %
        !          3036: }
        !          3037:
        !          3038: % @defivar == @defcv {Instance Variable}
        !          3039:
        !          3040: \def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader}
        !          3041:
        !          3042: \def\defivarheader #1#2#3{%
        !          3043: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
        !          3044: \begingroup\defname {#2}{Instance Variable of #1}%
        !          3045: \defvarargs {#3}\endgroup %
        !          3046: }
        !          3047:
        !          3048: % These definitions are run if you use @defmethodx, etc.,
        !          3049: % anywhere other than immediately after a @defmethod, etc.
        !          3050:
        !          3051: \def\defopx #1 {\errmessage{@defopx in invalid context}}
        !          3052: \def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
        !          3053: \def\defcvx #1 {\errmessage{@defcvx in invalid context}}
        !          3054: \def\defivarx #1 {\errmessage{@defivarx in invalid context}}
        !          3055:
        !          3056: % Now @defvar
        !          3057:
        !          3058: % First, define the processing that is wanted for arguments of @defvar.
        !          3059: % This is actually simple: just print them in roman.
        !          3060: % This must expand the args and terminate the paragraph they make up
        !          3061: \def\defvarargs #1{\normalparens #1%
        !          3062: \interlinepenalty=10000
        !          3063: \endgraf\penalty 10000\vskip -\parskip\penalty 10000}
        !          3064:
        !          3065: % @defvr Counter foo-count
        !          3066:
        !          3067: \def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader}
        !          3068:
        !          3069: \def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
        !          3070: \begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
        !          3071:
        !          3072: % @defvar == @defvr Variable
        !          3073:
        !          3074: \def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader}
        !          3075:
        !          3076: \def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
        !          3077: \begingroup\defname {#1}{Variable}%
        !          3078: \defvarargs {#2}\endgroup %
        !          3079: }
        !          3080:
        !          3081: % @defopt == @defvr {User Option}
        !          3082:
        !          3083: \def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader}
        !          3084:
        !          3085: \def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
        !          3086: \begingroup\defname {#1}{User Option}%
        !          3087: \defvarargs {#2}\endgroup %
        !          3088: }
        !          3089:
        !          3090: % @deftypevar int foobar
        !          3091:
        !          3092: \def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader}
        !          3093:
        !          3094: % #1 is the data type.  #2 is the name.
        !          3095: \def\deftypevarheader #1#2{%
        !          3096: \doind {vr}{\code{#2}}% Make entry in variables index
        !          3097: \begingroup\defname {\code{#1} #2}{Variable}%
        !          3098: \interlinepenalty=10000
        !          3099: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
        !          3100: \endgroup}
        !          3101:
        !          3102: % @deftypevr {Global Flag} int enable
        !          3103:
        !          3104: \def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader}
        !          3105:
        !          3106: \def\deftypevrheader #1#2#3{\doind {vr}{\code{#3}}%
        !          3107: \begingroup\defname {\code{#2} #3}{#1}
        !          3108: \interlinepenalty=10000
        !          3109: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
        !          3110: \endgroup}
        !          3111:
        !          3112: % This definition is run if you use @defvarx
        !          3113: % anywhere other than immediately after a @defvar or @defvarx.
        !          3114:
        !          3115: \def\defvrx #1 {\errmessage{@defvrx in invalid context}}
        !          3116: \def\defvarx #1 {\errmessage{@defvarx in invalid context}}
        !          3117: \def\defoptx #1 {\errmessage{@defoptx in invalid context}}
        !          3118: \def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
        !          3119: \def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
        !          3120:
        !          3121: % Now define @deftp
        !          3122: % Args are printed in bold, a slight difference from @defvar.
        !          3123:
        !          3124: \def\deftpargs #1{\bf \defvarargs{#1}}
        !          3125:
        !          3126: % @deftp Class window height width ...
        !          3127:
        !          3128: \def\deftp{\defvrparsebody\Edeftp\deftpx\deftpheader}
        !          3129:
        !          3130: \def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
        !          3131: \begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
        !          3132:
        !          3133: % This definition is run if you use @deftpx, etc
        !          3134: % anywhere other than immediately after a @deftp, etc.
        !          3135:
        !          3136: \def\deftpx #1 {\errmessage{@deftpx in invalid context}}
        !          3137:
        !          3138: \message{cross reference,}
        !          3139: % Define cross-reference macros
        !          3140: \newwrite \auxfile
        !          3141:
        !          3142: \newif\ifhavexrefs  % True if xref values are known.
        !          3143: \newif\ifwarnedxrefs  % True if we warned once that they aren't known.
        !          3144:
        !          3145: % \setref{foo} defines a cross-reference point named foo.
        !          3146:
        !          3147: \def\setref#1{%
        !          3148: %\dosetq{#1-title}{Ytitle}%
        !          3149: \dosetq{#1-pg}{Ypagenumber}%
        !          3150: \dosetq{#1-snt}{Ysectionnumberandtype}}
        !          3151:
        !          3152: \def\unnumbsetref#1{%
        !          3153: %\dosetq{#1-title}{Ytitle}%
        !          3154: \dosetq{#1-pg}{Ypagenumber}%
        !          3155: \dosetq{#1-snt}{Ynothing}}
        !          3156:
        !          3157: \def\appendixsetref#1{%
        !          3158: %\dosetq{#1-title}{Ytitle}%
        !          3159: \dosetq{#1-pg}{Ypagenumber}%
        !          3160: \dosetq{#1-snt}{Yappendixletterandtype}}
        !          3161:
        !          3162: % \xref, \pxref, and \ref generate cross-references to specified points.
        !          3163: % For \xrefX, #1 is the node name, #2 the name of the Info
        !          3164: % cross-reference, #3 the printed node name, #4 the name of the Info
        !          3165: % file, #5 the name of the printed manual.  All but the node name can be
        !          3166: % omitted.
        !          3167: %
        !          3168: \def\pxref#1{\strseeapp\xrefX[#1,,,,,,,]\strseetail}
        !          3169: \def\xref#1{\strSeeapp\xrefX[#1,,,,,,,]\strseetail}
        !          3170: \def\ref#1{\xrefX[#1,,,,,,,]}
        !          3171: \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup%
        !          3172: \def\printedmanual{\ignorespaces #5}%
        !          3173: \def\printednodename{\ignorespaces #3}%
        !          3174: %
        !          3175: \setbox1=\hbox{\printedmanual}%
        !          3176: \setbox0=\hbox{\printednodename}%
        !          3177: \ifdim \wd0=0pt%
        !          3178: \def\printednodename{\ignorespaces #1}%
        !          3179: %%% Uncommment the following line to make the actual chapter or section title
        !          3180: %%% appear inside the square brackets.
        !          3181: %\def\printednodename{#1-title}%
        !          3182: \fi%
        !          3183: %
        !          3184: %
        !          3185: % If we use \unhbox0 and \unhbox1 to print the node names, TeX does
        !          3186: % not insert empty discretionaries after hyphens, which means that it
        !          3187: % will not find a line break at a hyphen in a node names.  Since some
        !          3188: % manuals are best written with fairly long node names, containing
        !          3189: % hyphens, this is a loss.  Therefore, we simply give the text of
        !          3190: % the node name again, so it is as if TeX is seeing it for the first
        !          3191: % time.
        !          3192: \ifdim \wd1>0pt
        !          3193: \strsecref
        !          3194: \else%
        !          3195: \turnoffactive%
        !          3196: \refx{#1-snt}{} [\printednodename], \strpageapp\tie\refx{#1-pg}{}\strpagetail%
        !          3197: \fi
        !          3198: \endgroup}
        !          3199:
        !          3200: % \dosetq is the interface for calls from other macros
        !          3201:
        !          3202: % Use \turnoffactive so that punctuation chars such as underscore
        !          3203: % work in node names.
        !          3204: \def\dosetq #1#2{{\let\folio=0 \turnoffactive%
        !          3205: \edef\next{\write\auxfile{\internalsetq {#1}{#2}}}%
        !          3206: \next}}
        !          3207:
        !          3208: % \internalsetq {foo}{page} expands into
        !          3209: % CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
        !          3210: % When the aux file is read, ' is the escape character
        !          3211:
        !          3212: \def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
        !          3213:
        !          3214: % Things to be expanded by \internalsetq
        !          3215:
        !          3216: \def\Ypagenumber{\folio}
        !          3217:
        !          3218: \def\Ytitle{\thischapter}
        !          3219:
        !          3220: \def\Ynothing{}
        !          3221:
        !          3222: \def\Ysectionnumberandtype{%
        !          3223: \ifnum\secno=0 \strchapapp\xreftie\the\chapno\strchaptail %
        !          3224: \else \ifnum \subsecno=0 \strsecapp\xreftie\the\chapno.\the\secno\strsectail %
        !          3225: \else \ifnum \subsubsecno=0 %
        !          3226: \strsecapp\xreftie\the\chapno.\the\secno.\the\subsecno\strsectail %
        !          3227: \else %
        !          3228: \strsecapp\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno\strsectail %
        !          3229: \fi \fi \fi }
        !          3230:
        !          3231: \def\Yappendixletterandtype{%
        !          3232: \ifnum\secno=0 \strappendix\xreftie'char\the\appendixno{}%
        !          3233: \else \ifnum \subsecno=0 \strsecapp\xreftie'char\the\appendixno.\the\secno\strsectail %
        !          3234: \else \ifnum \subsubsecno=0 %
        !          3235: \strsecapp\xreftie'char\the\appendixno.\the\secno.\the\subsecno\strsectail %
        !          3236: \else %
        !          3237: \strsecapp\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno\strsectail %
        !          3238: \fi \fi \fi }
        !          3239:
        !          3240: \gdef\xreftie{'tie}
        !          3241:
        !          3242: % Use TeX 3.0's \inputlineno to get the line number, for better error
        !          3243: % messages, but if we're using an old version of TeX, don't do anything.
        !          3244: %
        !          3245: \ifx\inputlineno\thisisundefined
        !          3246:   \let\linenumber = \empty % Non-3.0.
        !          3247: \else
        !          3248:   \def\linenumber{\the\inputlineno:\space}
        !          3249: \fi
        !          3250:
        !          3251: % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
        !          3252: % If its value is nonempty, SUFFIX is output afterward.
        !          3253:
        !          3254: \def\refx#1#2{%
        !          3255:   \expandafter\ifx\csname X#1\endcsname\relax
        !          3256:     % If not defined, say something at least.
        !          3257:     $\langle$un\-de\-fined$\rangle$%
        !          3258:     \ifhavexrefs
        !          3259:       \message{\linenumber Undefined cross reference `#1'.}%
        !          3260:     \else
        !          3261:       \ifwarnedxrefs\else
        !          3262:         \global\warnedxrefstrue
        !          3263:         \message{Cross reference values unknown; you must run TeX again.}%
        !          3264:       \fi
        !          3265:     \fi
        !          3266:   \else
        !          3267:     % It's defined, so just use it.
        !          3268:     \csname X#1\endcsname
        !          3269:   \fi
        !          3270:   #2% Output the suffix in any case.
        !          3271: }
        !          3272:
        !          3273: % Read the last existing aux file, if any.  No error if none exists.
        !          3274:
        !          3275: % This is the macro invoked by entries in the aux file.
        !          3276: \def\xrdef #1#2{
        !          3277: {\catcode`\'=\other\expandafter \gdef \csname X#1\endcsname {#2}}}
        !          3278:
        !          3279: \def\readauxfile{%
        !          3280: \begingroup
        !          3281: \catcode `\^^@=\other
        !          3282: \catcode `\&=\other
        !          3283: \catcode `\=\other
        !          3284: \catcode `\^^C=\other
        !          3285: \catcode `\^^D=\other
        !          3286: \catcode `\^^E=\other
        !          3287: \catcode `\^^F=\other
        !          3288: \catcode `\^^G=\other
        !          3289: \catcode `\^^H=\other
        !          3290: \catcode `\=\other
        !          3291: \catcode `\^^L=\other
        !          3292: \catcode `\=\other
        !          3293: \catcode `\=\other
        !          3294: \catcode `\=\other
        !          3295: \catcode `\=\other
        !          3296: \catcode `\=\other
        !          3297: \catcode `\=\other
        !          3298: \catcode `\=\other
        !          3299: \catcode `\=\other
        !          3300: \catcode `\=\other
        !          3301: \catcode `\=\other
        !          3302: \catcode `\=\other
        !          3303: \catcode `\=\other
        !          3304: \catcode 26=\other
        !          3305: \catcode `\^^[=\other
        !          3306: \catcode `\^^\=\other
        !          3307: \catcode `\^^]=\other
        !          3308: \catcode `\^^^=\other
        !          3309: \catcode `\^^_=\other
        !          3310: \catcode `\@=\other
        !          3311: \catcode `\^=\other
        !          3312: \catcode `\~=\other
        !          3313: \catcode `\[=\other
        !          3314: \catcode `\]=\other
        !          3315: \catcode`\"=\other
        !          3316: \catcode`\_=\other
        !          3317: \catcode`\|=\other
        !          3318: \catcode`\<=\other
        !          3319: \catcode`\>=\other
        !          3320: \catcode `\$=\other
        !          3321: \catcode `\#=\other
        !          3322: \catcode `\&=\other
        !          3323: % the aux file uses ' as the escape.
        !          3324: % Turn off \ as an escape so we do not lose on
        !          3325: % entries which were dumped with control sequences in their names.
        !          3326: % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
        !          3327: % Reference to such entries still does not work the way one would wish,
        !          3328: % but at least they do not bomb out when the aux file is read in.
        !          3329: \catcode `\{=1 \catcode `\}=2
        !          3330: \catcode `\%=\other
        !          3331: \catcode `\'=0
        !          3332: \catcode `\\=\other
        !          3333: \openin 1 \jobname.aux
        !          3334: \ifeof 1 \else \closein 1 \input \jobname.aux \global\havexrefstrue
        !          3335: \fi
        !          3336: % Open the new aux file.  Tex will close it automatically at exit.
        !          3337: \openout \auxfile=\jobname.aux
        !          3338: \endgroup}
        !          3339:
        !          3340:
        !          3341: % Footnotes.
        !          3342:
        !          3343: \newcount \footnoteno
        !          3344:
        !          3345: % The trailing space in the following definition for supereject is
        !          3346: % vital for proper filling; pages come out unaligned when you do a
        !          3347: % pagealignmacro call if that space before the closing brace is
        !          3348: % removed.
        !          3349: \def\supereject{\par\penalty -20000\footnoteno =0 }
        !          3350:
        !          3351: % @footnotestyle is meaningful for info output only..
        !          3352: \let\footnotestyle=\comment
        !          3353:
        !          3354: \let\ptexfootnote=\footnote
        !          3355:
        !          3356: {\catcode `\@=11
        !          3357: \long\gdef\footnote #1{\global\advance \footnoteno by \@ne
        !          3358: \unskip
        !          3359: \edef\thisfootno{$^{\the\footnoteno}$}%
        !          3360: \let\@sf\empty
        !          3361: \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
        !          3362: \thisfootno\@sf \footnotezzz{#1}}
        !          3363: % \parsearg\footnotezzz}
        !          3364:
        !          3365: \long\gdef\footnotezzz #1{\insert\footins{
        !          3366: \interlinepenalty\interfootnotelinepenalty
        !          3367: \splittopskip\ht\strutbox % top baseline for broken footnotes
        !          3368: \splitmaxdepth\dp\strutbox \floatingpenalty\@MM
        !          3369: \leftskip\z@skip \rightskip\z@skip \spaceskip\z@skip \xspaceskip\z@skip
        !          3370: \footstrut\parindent=\defaultparindent\hang\textindent{\thisfootno}#1\strut}}
        !          3371:
        !          3372: }%end \catcode `\@=11
        !          3373:
        !          3374: % End of control word definitions.
        !          3375:
        !          3376: \message{and turning on texinfo input format.}
        !          3377:
        !          3378: \def\openindices{%
        !          3379:    \newindex{cp}%
        !          3380:    \newcodeindex{fn}%
        !          3381:    \newcodeindex{vr}%
        !          3382:    \newcodeindex{tp}%
        !          3383:    \newcodeindex{ky}%
        !          3384:    \newcodeindex{pg}%
        !          3385: }
        !          3386:
        !          3387: % Set some numeric style parameters, for 8.5 x 11 format.
        !          3388:
        !          3389: %\hsize = 6.5in
        !          3390: \newdimen\defaultparindent \defaultparindent = 15pt
        !          3391: \parindent = \defaultparindent
        !          3392: \parskip 18pt plus 1pt
        !          3393: \baselineskip 15pt
        !          3394: \advance\topskip by 1.2cm
        !          3395:
        !          3396: % Prevent underfull vbox error messages.
        !          3397: \vbadness=10000
        !          3398:
        !          3399: % Following George Bush, just get rid of widows and orphans.
        !          3400: \widowpenalty=10000
        !          3401: \clubpenalty=10000
        !          3402:
        !          3403: % Use TeX 3.0's \emergencystretch to help line breaking, but if we're
        !          3404: % using an old version of TeX, don't do anything.  We want the amount of
        !          3405: % stretch added to depend on the line length, hence the dependence on
        !          3406: % \hsize.  This makes it come to about 9pt for the 8.5x11 format.
        !          3407: %
        !          3408: \ifx\emergencystretch\thisisundefined \else
        !          3409:   \emergencystretch = \hsize
        !          3410:   \divide\emergencystretch by 45
        !          3411: \fi
        !          3412:
        !          3413: % Use @smallbook to reset parameters for 7x9.5 format  (or else 7x9.25)
        !          3414: \def\smallbook{
        !          3415: \global\lispnarrowing = 0.3in
        !          3416: \global\baselineskip 12pt
        !          3417: \advance\topskip by -1cm
        !          3418: \global\parskip 3pt plus 1pt
        !          3419: \global\hsize = 5in
        !          3420: \global\doublecolumnhsize=2.4in \global\doublecolumnvsize=15.0in
        !          3421: \global\vsize=7.5in
        !          3422: \global\tolerance=700
        !          3423: \global\hfuzz=1pt
        !          3424: \global\contentsrightmargin=0pt
        !          3425:
        !          3426: \global\pagewidth=\hsize
        !          3427: \global\pageheight=\vsize
        !          3428:
        !          3429: \global\let\smalllisp=\smalllispx
        !          3430: \global\let\smallexample=\smalllispx
        !          3431: \global\def\Esmallexample{\Esmalllisp}
        !          3432: }
        !          3433:
        !          3434: % Use @afourpaper to print on European A4 paper.
        !          3435: \def\afourpaper{
        !          3436: \global\tolerance=700
        !          3437: \global\hfuzz=1pt
        !          3438: \global\baselineskip=12pt
        !          3439: \global\parskip 15pt plus 1pt
        !          3440:
        !          3441: \global\vsize= 53\baselineskip
        !          3442: \advance\vsize by \topskip
        !          3443: %\global\hsize=   5.85in     % A4 wide 10pt
        !          3444: \global\hsize=  6.5in
        !          3445: \global\outerhsize=\hsize
        !          3446: \global\advance\outerhsize by 0.5in
        !          3447: \global\outervsize=\vsize
        !          3448: \global\advance\outervsize by 0.6in
        !          3449: \global\doublecolumnhsize=\hsize
        !          3450: \global\divide\doublecolumnhsize by 2
        !          3451: \global\advance\doublecolumnhsize by -0.1in
        !          3452: \global\doublecolumnvsize=\vsize
        !          3453: \global\multiply\doublecolumnvsize by 2
        !          3454: \global\advance\doublecolumnvsize by 0.1in
        !          3455:
        !          3456: \global\pagewidth=\hsize
        !          3457: \global\pageheight=\vsize
        !          3458: }
        !          3459:
        !          3460: \ifisJTeX % a4 is common alson in Japan
        !          3461:  \afourpaper
        !          3462:  \def\smallbook{\message{@smallbook is disabled in jtexinfo mode}}
        !          3463:  \input texinfo-js.tex
        !          3464: \else
        !          3465:   \def\strappendix{Appendix }
        !          3466:   \def\strchapapp{Chapter }
        !          3467:   \def\strchaptail{}
        !          3468:   \def\strsecapp{Section}
        !          3469:   \def\strsectail{}
        !          3470:   \def\strsecref{section ``\printednodename'' in \cite{\printedmanual}}
        !          3471:   \def\strseeapp{see }
        !          3472:   \def\strseetail{}
        !          3473:   \def\strSeeapp{See }
        !          3474:   \def\strSeetail{}
        !          3475:   \def\strpageapp{page}
        !          3476:   \def\strpagetail{}
        !          3477:   \def\strtoc{Table Of Contents}
        !          3478:   \def\strstoc{Short Contents}
        !          3479: \fi
        !          3480:
        !          3481: %% For a final copy, take out the rectangles
        !          3482: %% that mark overfull boxes (in case you have decided
        !          3483: %% that the text looks ok even though it passes the margin).
        !          3484: \def\finalout{\overfullrule=0pt}
        !          3485:
        !          3486: % Define macros to output various characters with catcode for normal text.
        !          3487: \catcode`\"=\other
        !          3488: \catcode`\~=\other
        !          3489: \catcode`\^=\other
        !          3490: \catcode`\_=\other
        !          3491: \catcode`\|=\other
        !          3492: \catcode`\<=\other
        !          3493: \catcode`\>=\other
        !          3494: \catcode`\+=\other
        !          3495: \def\normaldoublequote{"}
        !          3496: \def\normaltilde{~}
        !          3497: \def\normalcaret{^}
        !          3498: \def\normalunderscore{_}
        !          3499: \def\normalverticalbar{|}
        !          3500: \def\normalless{<}
        !          3501: \def\normalgreater{>}
        !          3502: \def\normalplus{+}
        !          3503:
        !          3504: % This macro is used to make a character print one way in ttfont
        !          3505: % where it can probably just be output, and another way in other fonts,
        !          3506: % where something hairier probably needs to be done.
        !          3507: %
        !          3508: % #1 is what to print if we are indeed using \tt; #2 is what to print
        !          3509: % otherwise.  Since all the Computer Modern typewriter fonts have zero
        !          3510: % interword stretch (and shrink), and it is reasonable to expect all
        !          3511: % typewriter fonts to have this, we can check that font parameter.
        !          3512: %
        !          3513: \def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
        !          3514:
        !          3515: % Turn off all special characters except @
        !          3516: % (and those which the user can use as if they were ordinary).
        !          3517: % Most of these we simply print from the \tt font, but for some, we can
        !          3518: % use math or other variants that look better in normal text.
        !          3519:
        !          3520: \catcode`\"=\active
        !          3521: \def\activedoublequote{{\tt \char '042}}
        !          3522: \let"=\activedoublequote
        !          3523: \catcode`\~=\active
        !          3524: \def~{{\tt \char '176}}
        !          3525: \chardef\hat=`\^
        !          3526: \catcode`\^=\active
        !          3527: \def^{{\tt \hat}}
        !          3528:
        !          3529: \catcode`\_=\active
        !          3530: \def_{\ifusingtt\normalunderscore\_}
        !          3531: % Subroutine for the previous macro.
        !          3532: \def\_{\lvvmode \kern.06em \vbox{\hrule width.3em height.1ex}}
        !          3533:
        !          3534: % \lvvmode is equivalent in function to \leavevmode.
        !          3535: % Using \leavevmode runs into trouble when written out to
        !          3536: % an index file due to the expansion of \leavevmode into ``\unhbox
        !          3537: % \voidb@x'' ---which looks to TeX like ``\unhbox \voidb\x'' due to our
        !          3538: % magic tricks with @.
        !          3539: \def\lvvmode{\vbox to 0pt{}}
        !          3540:
        !          3541: \catcode`\|=\active
        !          3542: \def|{{\tt \char '174}}
        !          3543: \chardef \less=`\<
        !          3544: \catcode`\<=\active
        !          3545: \def<{{\tt \less}}
        !          3546: \chardef \gtr=`\>
        !          3547: \catcode`\>=\active
        !          3548: \def>{{\tt \gtr}}
        !          3549: \catcode`\+=\active
        !          3550: \def+{{\tt \char 43}}
        !          3551: %\catcode 27=\active
        !          3552: %\def^^[{$\diamondsuit$}
        !          3553:
        !          3554: % Used sometimes to turn off (effectively) the active characters
        !          3555: % even after parsing them.
        !          3556: \def\turnoffactive{\let"=\normaldoublequote
        !          3557: \let~=\normaltilde
        !          3558: \let^=\normalcaret
        !          3559: \let_=\normalunderscore
        !          3560: \let|=\normalverticalbar
        !          3561: \let<=\normalless
        !          3562: \let>=\normalgreater
        !          3563: \let+=\normalplus}
        !          3564:
        !          3565: % Set up an active definition for =, but don't enable it most of the time.
        !          3566: {\catcode`\==\active
        !          3567: \global\def={{\tt \char 61}}}
        !          3568:
        !          3569: \catcode`\@=0
        !          3570:
        !          3571: % \rawbackslashxx output one backslash character in current font
        !          3572: \global\chardef\rawbackslashxx=`\\
        !          3573: %{\catcode`\\=\other
        !          3574: %@gdef@rawbackslashxx{\}}
        !          3575:
        !          3576: % \rawbackslash redefines \ as input to do \rawbackslashxx.
        !          3577: {\catcode`\\=\active
        !          3578: @gdef@rawbackslash{@let\=@rawbackslashxx }}
        !          3579:
        !          3580: % \normalbackslash outputs one backslash in fixed width font.
        !          3581: \def\normalbackslash{{\tt\rawbackslashxx}}
        !          3582:
        !          3583: % Say @foo, not \foo, in error messages.
        !          3584: \escapechar=`\@
        !          3585:
        !          3586: % \catcode 17=0   % Define control-q
        !          3587: \catcode`\\=\active
        !          3588:
        !          3589: % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
        !          3590: % That is what \eatinput is for; after that, the `\' should revert to printing
        !          3591: % a backslash.
        !          3592: %
        !          3593: @gdef@eatinput input texinfo{@fixbackslash}
        !          3594: @global@let\ = @eatinput
        !          3595:
        !          3596: % On the other hand, perhaps the file did not have a `\input texinfo'. Then
        !          3597: % the first `\{ in the file would cause an error. This macro tries to fix
        !          3598: % that, assuming it is called before the first `\' could plausibly occur.
        !          3599: %
        !          3600: @gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi}
        !          3601:
        !          3602: %% These look ok in all fonts, so just make them not special.  The @rm below
        !          3603: %% makes sure that the current font starts out as the newly loaded cmr10
        !          3604: @catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
        !          3605:
        !          3606: @textfonts
        !          3607: @rm
        !          3608:
        !          3609: @c Local variables:
        !          3610: @c page-delimiter: "^\\\\message"
        !          3611: @c End:

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