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authorKarl Berry <karl@freefriends.org>2006-01-12 23:46:46 +0000
committerKarl Berry <karl@freefriends.org>2006-01-12 23:46:46 +0000
commitb1c871653d37d9c6fd0f97b048dca051b5b1db27 (patch)
tree3f925e95aa3461b9ecb75df861259a7f71bc3f23 /Master/texmf-dist/tex/plain/base/gkpmac.tex
parent82770e7491344072d5dd54ce9a78546eebe99c3f (diff)
trunk/Master/texmf-dist/tex/plain
git-svn-id: svn://tug.org/texlive/trunk@621 c570f23f-e606-0410-a88d-b1316a301751
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+\tracingpages=1 % TEMPORARY!
+% Macros for `Concrete Mathematics'
+\ifx\gkpmac\fmtversion\endinput\else\let\gkpmac=\fmtversion\fi
+
+% Fonts for regular text
+
+\font\textrm=ccr10 % roman
+\font\textit=ccti10 % italic (emphasis)
+\font\textsl=ccsl10 % slanted (titles)
+\font\textbf=cmbx10 % bold
+\font\textcsc=cccsc10 % caps and small caps
+\font\oldsty=ccmi10 % equation numbers
+
+% Fonts for regular math
+% I'm setting \fontdimen2 to zero because AMS forgot to do it;
+% they may have fixed the problem in the meantime, but no harm is done
+
+\font\mathtext=ccr10
+ \font\mathsubtext=ccr7
+ \font\mathsubsubtext=ccr5
+\font\mathlet=eurm10 \fontdimen2\mathlet=0pt
+ \font\mathsublet=eurm7 \fontdimen2\mathsublet=0pt
+ \font\mathsubsublet=eurm5 \fontdimen2\mathsubsublet=0pt
+ \skewchar\mathlet='177 \skewchar\mathsublet='177 \skewchar\mathsubsublet='177
+\font\mathsym=cmsy10
+ \font\mathsubsym=cmsy7
+ \font\mathsubsubsym=cmsy5
+ \skewchar\mathsym='60 \skewchar\mathsubsym='60 \skewchar\mathsubsubsym='60
+\font\mathext=cmex10
+ \font\mathsubext=cmex10
+ \font\mathsubsubext=cmex10
+\font\mathscr=euxm10\fontdimen2\mathscr=0pt
+ \font\mathsubscr=euxm7 \fontdimen2\mathsubscr=0pt
+ \font\mathsubsubscr=euxm5 \fontdimen2\mathsubsubscr=0pt
+ \skewchar\mathscr='60 \skewchar\mathsubscr='60 \skewchar\mathsubsubscr='60
+\font\mathfr=eufm10\fontdimen2\mathfr=0pt
+ \font\mathsubfr=eufm7 \fontdimen2\mathsubfr=0pt
+ \font\mathsubsubfr=eufm5 \fontdimen2\mathsubsubfr=0pt
+\font\matheuex=euex10\fontdimen2\matheuex=0pt
+
+\font\eulerbf=eurb10 \fontdimen2\eulerbf=0pt % not hooked in to these macros
+
+% Fonts for graffiti
+
+\font\gtext=ccslc9
+\font\goldstyle=ccmic9
+ \fontdimen3\gtext=0pt \fontdimen4\gtext=0pt % no stretch or shrink
+\font\gmathtext=ccr9
+ \font\gmathsubtext=ccr6
+ \font\gmathsubsubtext=ccr5
+\font\gmathlet=eurm10 scaled 900 \fontdimen2\gmathlet=0pt
+ \font\gmathsublet=eurm7 scaled 857 \fontdimen2\gmathsublet=0pt
+ \font\gmathsubsublet=eurm5 \fontdimen2\gmathsubsublet=0pt
+ \skewchar\gmathlet='177 \skewchar\gmathsublet='177
+ \skewchar\gmathsubsublet='177
+\font\gmathsym=cmsy9
+ \font\gmathsubsym=cmsy6
+ \font\gmathsubsubsym=cmsy5
+ \skewchar\gmathsym='60 \skewchar\gmathsubsym='60 \skewchar\gmathsubsubsym='60
+\font\gmathext=cmex9
+ \font\gmathsubext=cmex9
+ \font\gmathsubsubext=cmex9
+\font\gmathscr=euxm10 scaled 900 \fontdimen2\gmathscr=0pt
+ \font\gmathsubscr=euxm7 scaled 857 \fontdimen2\gmathsubscr=0pt
+ \font\gmathsubsubscr=euxm5 \fontdimen2\gmathsubsubscr=0pt
+ \skewchar\gmathscr='60 \skewchar\gmathsubscr='60 \skewchar\gmathsubsubscr='60
+\font\gmathfr=eufm10 scaled 900 \fontdimen2\gmathfr=0pt
+ \font\gmathsubfr=eufm7 scaled 857 \fontdimen2\gmathsubfr=0pt
+ \font\gmathsubsubfr=eufm5 \fontdimen2\gmathsubsubfr=0pt
+\font\gmatheuex=euex9 \fontdimen2\gmatheuex=0pt
+
+% Fonts for headings, etc.
+
+\font\chapfont=cmbxcd10 scaled 8000
+\font\title=cmbx10 scaled \magstep5
+\font\subtitle=cmbx10 scaled 1315 % that's magstep 1.5
+\font\subsubtitle=cmbxsl10
+\font\runhead=cmbx9
+\font\foliofont=cmr9
+\font\gtfont=cmmi9 % for the \t accent
+\font\ninesl=ccsl9 % used in the index only
+
+% Normal text conventions
+
+\catcode`@=11 % borrow the private macros of PLAIN (with care)
+\def\wlog#1{} % don't put allocation info into the log
+
+\hsize=28pc
+\vsize=45.25pc
+\parindent=20pt
+\baselineskip=13pt
+
+\let\sc=\textcsc
+\let\bf=\textbf
+\def\textindent#1{\noindent\hbox to\parindent{\bf#1\hfil}\ignorespaces}
+\def\exitem{\hangindent2\parindent \textindent}
+
+\textfont0=\mathtext
+ \scriptfont0=\mathsubtext
+ \scriptscriptfont0=\mathsubsubtext
+\textfont1=\mathlet \let\tfont=\teni
+ \scriptfont1=\mathsublet
+ \scriptscriptfont1=\mathsubsublet
+\textfont2=\mathsym
+ \scriptfont2=\mathsubsym
+ \scriptscriptfont2=\mathsubsubsym
+\textfont3=\mathext
+ \scriptfont3=\mathsubext
+ \scriptscriptfont3=\mathsubsubext
+\def\rm{\fam\z@\textrm}
+\def\it{\fam\itfam\textit} % \it is family 4, defined in PLAIN
+\def\sl{\textsl}
+\textfont\itfam=\textit
+\newfam\scrfam \ifnum\scrfam=8\relax\else\error\fi % family 8, script
+\textfont\scrfam=\mathscr
+ \scriptfont\scrfam=\mathsubscr
+ \scriptscriptfont\scrfam=\mathsubsubscr
+\def\scr{\fam8 }
+\mathcode`0="7130
+\mathcode`1="7131
+\mathcode`2="7132
+\mathcode`3="7133
+\mathcode`4="7134
+\mathcode`5="7135
+\mathcode`6="7136
+\mathcode`7="7137
+\mathcode`8="7138
+\mathcode`9="7139
+\newfam\frfam % family 9, fraktur
+\textfont\frfam=\mathfr
+ \scriptfont\frfam=\mathsubfr
+ \scriptscriptfont\frfam=\mathsubsubfr
+\def\frak{\fam9 }
+\newfam\euexfam % family 10, substitions for euler symbols
+\newfam\eqfam % family 11, cmr equal signs for Relbar (!)
+\font\teneq=cmr10 \textfont\eqfam=\teneq
+\font\nineeq=cmr9
+% I'm not using Relbar except in 9&10pt, so this family is very incomplete...
+
+\mathchardef\intop="1A52
+\mathchardef\ointop="1A48
+\mathchardef\coprod="1A60
+\mathchardef\prod="1A51
+\mathchardef\sum="1A50
+\mathchardef\braceld="A7A \mathchardef\bracerd="A7B
+\mathchardef\bracelu="A7C \mathchardef\braceru="A7D
+\mathchardef\infty="0A31
+
+\mathchardef\nearrow="3A25
+\mathchardef\searrow="3A26
+\mathchardef\nwarrow="3A2D
+\mathchardef\swarrow="3A2E
+\mathchardef\Leftrightarrow="3A2C
+\mathchardef\Leftarrow="3A28
+\mathchardef\Rightarrow="3A29
+\mathchardef\leftrightarrow="3A24 \mathcode`\^^W="3A24
+\mathchardef\leftarrow="3A20 \let\gets=\leftarrow \mathcode`\^^X="3A20
+\mathchardef\rightarrow="3A21 \let\to=\rightarrow \mathcode`\^^Y="3A21
+\def\uparrow{\delimiter"3A22378 } \mathcode`\^^K="3A22
+\def\downarrow{\delimiter"3A23379 } \mathcode`\^^A="3A23
+\def\updownarrow{\delimiter"3A6C33F }
+\def\Uparrow{\delimiter"3A2A37E }
+\def\Downarrow{\delimiter"3A2B37F }
+\def\Updownarrow{\delimiter"3A6D377 }
+\mathchardef\leftharpoonup="3A18
+\mathchardef\leftharpoondown="3A19
+\mathchardef\rightharpoonup="3A1A
+\mathchardef\rightharpoondown="3A1B
+
+\textfont\euexfam=\matheuex
+\scriptfont\euexfam=\mathsubsym % this is OK since I don't use all characters
+% of euex in subscripts/superscripts; otherwise I'd have to make euex7 and euex6
+\scriptscriptfont\euexfam=\mathsubsym % only for \mathchoice, not really chosen
+\mathcode`+="292B
+\mathcode`-="292D
+\mathcode`!="0921
+\mathcode`(="4928 \delcode`(="928300
+\mathcode`)="5929 \delcode`)="929301
+\mathcode`[="495B \delcode`[="95B302
+\mathcode`]="595D \delcode`]="95D303
+\mathcode`=="393D
+\mathchardef\Relbar="3B3D % we need the old = to match \Arrows
+\mathchardef\Gamma="7100
+\mathchardef\Delta="7101
+\mathchardef\Theta="7102
+\mathchardef\Lambda="7103
+\mathchardef\Xi="7104
+\mathchardef\Pi="7105
+\mathchardef\Sigma="7106
+\mathchardef\Upsilon="7107
+\mathchardef\Phi="7108
+\mathchardef\Psi="7109
+\mathchardef\Omega="710A
+\let\varsigma=\sigma \let\varrho=\rho % Euler doesn't have these
+\mathchardef\aleph="0840
+\def\rbrace{\delimiter"5867A09 } \let\}=\rbrace
+\def\lbrace{\delimiter"4866A08 } \let\{=\lbrace
+%\mathchardef\equiv="3811 \let\cong=\equiv % lowres bars weren't spaced right
+\mathchardef\leq="3814 \let\le=\leq
+\mathchardef\geq="3815 \let\ge=\geq
+\mathchardef\Re="083C
+\mathchardef\Im="083D
+\def\vert{\delimiter"86A30C }
+\def\backslash{\delimiter"86E30F }
+
+\setbox\strutbox=\hbox{\vrule height9pt depth4pt width\z@}%
+\newbox\bigstrutbox \newbox\biggstrutbox
+\setbox\bigstrutbox=\hbox{\vrule height11pt depth4pt width\z@}%
+\def\bigstrut{\relax\ifmmode\copy\bigstrutbox\else\unhcopy\bigstrutbox\fi}
+\setbox\biggstrutbox=\hbox{\vrule height17pt depth10pt width\z@}%
+\def\biggstrut{\relax\ifmmode\copy\biggstrutbox\else\unhcopy\biggstrutbox\fi}
+\rm
+
+\newmuskip\normalthick \normalthick=5mu plus 5mu
+\newmuskip\normalmedmu \normalmedmu=\medmuskip
+\newmuskip\displaythick \displaythick=10mu minus 3mu
+\everymath{\thickmuskip=\normalthick}
+
+\abovedisplayskip=8pt plus 3pt minus 2pt % there's 2pt more (opened up)
+\belowdisplayskip=10pt plus 3pt minus 2pt
+
+% displays not centered; all have capability of \eqalign
+\outer\def\begindisplay{\obeylines\startdisplay}
+{\obeylines\gdef\startdisplay#1
+ {\catcode`\^^M=5$$%
+ \advance\displayindent\parindent\advance\displaywidth-\parindent%
+ \openup2pt #1\halign\bgroup\span\preamble\cr}}
+\outer\def\enddisplay{\crcr\egroup$$}
+\jot=\z@ % we do our own opening up
+
+\def\displaymath{$\thickmuskip=\displaythick\displaystyle}
+\def\preamble{\hfil\displaymath{##}$&&\displaymath{{}##}$\hfil}
+\def\tablepreamble{\bigstrut\hfil$##$\hfil\ &\vrule##&&\quad\hfil$##$\hfil}
+\def\xbox{\qquad\hbox} % for third column of explanation
+
+\newcount\eqcount
+\def\equ(#1.#2){{\rm({\oldsty#1}.{\oldsty#2})}}
+\def\eq(#1){\equ(\chapno.#1)}
+\def\thiseq{\xdef\next{(\chapno.\number\eqcount)}\expandafter\equ\next}
+\def\eqno{\global\advance\eqcount 1 \global\everycr{\makeeqno\thiseq}}
+\newdimen\backup
+\def\makeeqno#1{\noalign{\global\everycr{}%
+ \advance\displaywidth\displayindent
+ \setbox0=\hbox to\displaywidth{\hfil#1}%
+ \backup=\prevdepth \advance\backup\ht0
+ \setbox0=\vbox{\kern-\backup\box0}\ht0=\z@ \dp0=\z@
+ \setbox0=\vbox{\box0}\unvbox0}} % that puts equation number on prev line!
+
+\newif\iftitle
+\newskip\chaptopspace \chaptopspace=1in minus 5pt
+\def\beginchapter#1 #2 \par{ % we should be at top of a page
+ \titletrue \eqcount=0
+ \ifodd\pageno
+ \rightline{\chapfont#1\kern-.05em}
+ \vskip\chaptopspace
+ \rightline{\title#2}
+ \moveleft7pc % this applies to the \vbox after the \fi
+ \else % left-hand page
+ \leftline{\kern-.05em\chapfont#1}
+ \vskip\chaptopspace
+ \leftline{\title#2} \fi
+ \vbox{\hrule width 35pc}
+ \def\chapno{#1} \edef\chaptitle{#2}
+ \mark{#1\enspace #2}
+ \smallskip\noindent}
+
+\def\beginsection#1 #2 \par{ % should not be first in the chapter
+ \backup=\lastskip % but should come on first or second page of chapter
+ \mark{#1\enspace #2} % because the mark gives running head on right page
+ \nobreak\vskip-\backup\penalty-200
+ {\subtitle\baselineskip=34pt
+ \noindent\hbox to2\parindent{#1\hfil}\uppercase{\kern-.05em#2}\par}
+ \nobreak\vskip5pt\noindent\hbox to2\parindent{}}
+
+\newcount\excount
+\def\beginexercises{\backup=\lastskip \excount=0
+ \mark{\chapno\enspace Exercises}
+ \nobreak\vskip-\backup\penalty-200
+ {\subtitle\baselineskip=34pt\noindent Exercises\par}\nobreak}
+
+{\catcode`\|=\active
+\gdef\table#1\tabref|#2|{\hrule height1pt width\hsize \kern2pt
+ \noindent\strut{\bf Table |#2|\enspace}#1\par
+ \hrule height.5pt width\hsize\tabref|#2|}}
+
+\def\medbr{\ifnum\lastpenalty>9999 \medskip \else\medbreak\fi}
+\def\subhead#1\par{\medbr
+ {\subsubtitle\noindent#1\par}\nobreak}
+\def\ex:{\par{\advance\medskipamount-1pt\medbr}%
+ \advance\excount 1 \item{\number\excount}}
+
+\def\dash---{\thinspace---\hskip.16667em\relax}
+\def\qback{\kern-.15em} % between , or . and ''
+\def\undertext#1{$\underline{\smash{\hbox{#1}}}$}
+\def\newline{\hfil\break}
+\def\Hint:{{\it Hint:\/}}
+\let\macron=\= % we will use \= for congruence relation
+\def\t#1{{\edef\next{\the\font}\tfont\accent"7F\next#1}}
+
+% Here's a definition that was corrected in plain.tex version 3.14159;
+% I'm keeping the old version here, because I had already been compensating
+% for its deficiencies in script and scriptscript styles; without this
+% buggy version, it would be hard for me to match the old pages precisely
+\def\bmod{\mskip-\medmuskip\mkern5mu
+ \mathbin{\rm mod}\penalty900\mkern5mu\mskip-\medmuskip}
+
+% Graffiti macros
+\chardef\other=12
+\newread\grfi \openin\grfi=\jobname.grf
+%\newwrite\grfo \immediate\openout\grfo=\jobname.grf % let's hope no conflict
+%% Hmmm...; that doesn't work on Unix.
+%% Here's my first solution, a kludge where I alternated between .grf and .gr
+%\newif\ifgrf \newwrite\grfo \newwrite\grfempty
+%\ifeof\grfi \grffalse
+%\else\read\grfi to\grfitest \ifeof\grfi \grffalse \else \grftrue \fi\fi
+%\ifgrf\else \openin\grfi=\jobname.gr
+% \ifeof\grfi\else\read\grfi to\grfitest \fi\fi
+%\immediate\openout\grfo=\jobname.gr\ifgrf\else f\fi
+%\immediate\write\grfo{} % an empty line will start a nonempty file (Unix only)
+%% and then at the end I said
+% \immediate\openout\grfempty=\jobname.gr\ifgrf f\fi % clear the input file
+%% That solution worked with the following original macros
+%\def\testnextgrf{{\def\do##1{\catcode`##1=\other}\dospecials
+% \global\read\grfi to\next}\expandafter\testgrf\meaning\next\testgrf}
+%\expandafter\def\expandafter\testgrf\meaning\empty#1 #2\testgrf{%
+% \setup#2!!!!!$\ifx\thisone\thatone\if#1R\Rtrue\else\Rfalse\fi\else\Rguess\fi}
+%% Anyway, here's my second approach to Unix: (order n^2 algorithm)
+\def\\{{\def\do##1{\catcode`##1=\other}\dospecials \endlinechar=-1 \let\eol=0
+ \gdef\grfmem{}
+ \expandafter\def\expandafter\gbbl\meaning\empty{}
+ \def\appgrf{\read\grfi to\g
+ \ifx\g\empty\else\xdef\grfmem{\grfmem\expandafter\gbbl\meaning\g\eol}\fi}
+ \def\next{\ifeof\grfi\let\next\relax\else\appgrf\fi\next}\next}}
+\\ % now \grfmem is "L aaaaa\eol R bbbbb\eol ... R zzzzz\eol".
+\def\testnextgrf#1 #2\eol#3\\{\gdef\grfmem{#3}\setup#2!!!!!$%
+ \ifx\thisone\thatone\if#1R\Rtrue\else\Rfalse\fi\else\Rguess\fi}
+\newwrite\grfo \immediate\openout\grfo=\jobname.grf % no conflict now
+
+\def\graffiti{% set up graffiti style
+ \hsize=6pc
+ \baselineskip=10pt \lineskip=0pt \lineskiplimit=0pt
+ \parindent=0pt
+ \mathsurround=1pt
+ \textfont0=\gmathtext
+ \scriptfont0=\gmathsubtext
+ \scriptscriptfont0=\gmathsubsubtext
+ \textfont1=\gmathlet \let\tfont=\gtfont
+ \scriptfont1=\gmathsublet
+ \scriptscriptfont1=\gmathsubsublet
+ \textfont2=\gmathsym
+ \scriptfont2=\gmathsubsym
+ \scriptscriptfont2=\gmathsubsubsym
+ \textfont3=\gmathext
+ \scriptfont3=\gmathsubext
+ \scriptscriptfont3=\gmathsubsubext
+\textfont\scrfam=\gmathscr
+ \scriptfont\scrfam=\gmathsubscr
+ \scriptscriptfont\scrfam=\gmathsubsubscr
+\textfont\frfam=\gmathfr
+ \scriptfont\frfam=\gmathsubfr
+ \scriptscriptfont\frfam=\gmathsubsubfr
+\textfont\euexfam=\gmatheuex
+\scriptfont\euexfam=\gmathsubsym % OK since I don't use all chars in this size
+\textfont\eqfam=\nineeq
+ \def\rm{\fam\z@\gtext}%
+ \let\oldsty=\goldstyle
+ \let\big=\ninebig
+ \setbox\strutbox=\hbox{\vrule height7.25pt depth2.75pt width\z@}%
+ \gtext
+ \rightskip=\z@ plus2em % ragged right
+ \tolerance=2000
+ \hyphenpenalty=300
+ \exhyphenpenalty=300
+ \doublehyphendemerits=100000
+ \finalhyphendemerits=\doublehyphendemerits
+ }
+\def\ninebig#1{{\hbox{$\textfont0=\tenrm\textfont2=\tensy
+ \left#1\vbox to7.25pt{}\right.\n@space$}}}
+\def\grafctr{\hbox to4.5pc{\hfil##\hfil}}
+
+\newif\ifR % does this entry go on a right-hand page?
+\def\Rguess{\def\ifR{\ifodd\pageno}}
+\long\def\g#1\g{\def\next{#1!!!!!}\expandafter\writegrf\meaning\next$%
+ \ifx\grfmem\empty\Rguess\else\expandafter\testnextgrf\grfmem\\\fi
+% pre-Unix, that line was \ifeof\grfi\Rguess\else\testnextgrf\fi
+ \setbox0=\vtop{\graffiti#1%
+ \write\m@ne\ifR{\Rcheck}\else{\Lcheck}\fi}% log file records successes
+ \ifvmode\kern-\prevdepth\kern-\ht0\dp0=\z@\nointerlineskip\bgroup
+ \else\dp0=\dp\strutbox\strut\vadjust{\kern-\dp\strutbox\kern-\ht0\fi
+ \ifR\moveleft7\else\moveright29\fi pc\box0}}
+\expandafter\def\expandafter\writegrf\meaning\empty#1#2#3#4#5#6${%
+ \write\grfo{\LorR #1#2#3#4#5}\def\thisone{#1#2#3#4#5}}
+\def\setup#1#2#3#4#5#6${\def\thatone{#1#2#3#4#5}}
+\def\LorR{\ifodd\pageno R \else L \fi}
+\def\Lcheck{\ifodd\pageno Bad guess!\fi}
+\def\Rcheck{\ifodd\pageno\else Bad guess!\fi}
+
+% Page layout
+\newif\ifpreprint \preprinttrue % should be false when making the final copy
+\newdimen\pageheight \pageheight=\vsize
+\newdimen\totheight \totheight=49.5pc
+\newdimen\folioht \setbox0=\hbox{\foliofont0} \folioht=\ht0
+\def\leftheadline{\hbox to35pc{\vbox to 10pt{}% strut to position the baseline
+ \llap{\kern-2pc\iftitle\leftcorner\else\foliofont\folio\fi\hfil}%
+ \iftitle\hfil\copyrite\else\runhead\uppercase\expandafter{\chaptitle}\hfil\fi}}
+\def\rightheadline{\hbox to35pc{\iftitle\copyrite\fi\hfil
+ \vbox to 10pt{}% strut to position the baseline
+ \runhead\uppercase\expandafter{\topmark}%
+ \rlap{\hfil\iftitle\rightcorner\else\foliofont\folio\fi\kern-2pc}}}
+\def\leftcorner{\vrule\vbox to\folioht{\hrule width9pt\vfil}}
+\def\rightcorner{\vbox to\folioht{\hrule width9pt\vfil}\vrule}
+\def\copyrite{\ifpreprint{\textfont2=\sevensy\sevenrm\copyright\ 1988
+ Addison-Wesley Publishing Company; all rights reserved}\fi}
+
+\def\onepageout#1{\escapechar=-1 % for writing \tabrefs
+ \shipout\vbox to\totheight{ % here we define one page of output
+ \offinterlineskip % butt the boxes together
+ \vbox to 2pc{ % this part goes on top of the regular pages
+ \ifodd\pageno \rightheadline\else\leftheadline\fi
+ \vfill} % this completes the \vbox to 2pc
+ \ifodd\pageno\moveright7pc\fi #1
+ \vfill
+ \iftitle \global\titlefalse % reset the titlepage switch
+ \ifodd\pageno \hbox to35pc{\hfil\foliofont\folio}
+ \else\hbox{\foliofont\folio}\fi\fi
+ \ifpreprint\ifinxmode\makeinxfooter\fi\fi
+ }
+ \advancepageno}
+
+\output{\onepageout{\pagebody}}
+
+\newbox\inxfootbanner
+\def\hours{\count0=\time \divide\count0 by60 % find the o'clock
+ \multiply\count0 by40 \advance\count0\time % convert to hhmm
+ \advance\count0 10000 \expandafter\gobbleone\number\count0\relax}
+\def\gobbleone1{}
+\setbox\inxfootbanner=\rlap{\hbox to 6.5in{\hrulefill\sevenrm\quad
+ Author's page proof produced by \TeX\ at
+ \hours\space on \ifcase\month\or
+ January\or February\or March\or April\or May\or June\or
+ July\or August\or September\or October\or November\or December\fi
+ \space\number\day}}
+\def\makeinxfooter{\vbox to0pt{\kern10pt\copy\inxfootbanner\kern4pt
+ \rlap{\vbadness=\maxdimen \inxcolumns}\vss}}
+\def\inxcolumns{\ifvoid\inxbox\let\next\relax\else\let\next\contribcol\fi\next}
+\def\contribcol{\setbox0=\vsplit\inxbox to54pt
+ \vtop{\unvbox0}\kern20pt \inxcolumns}
+\def\inxstyle{\vrule height6pt depth2pt width\z@ \sevenrm}
+\splittopskip=6pt
+
+% Cross references
+
+% \ref{value}|name| gives value to |name|
+% \eqref|name| gives \eqcount to |name|
+% \exref|name| gives \excount to |name|
+% \tabref|name| gives appropriate page number to |name|
+% \refin foo inputs references from job foo (other than this job)
+% \showmissestrue if you want to see missing references
+
+\newif\ifshowmisses
+\def\vertical{|}
+\def\inref#1 #{\expandafter\def\csname\vertical#1\endcsname}
+
+\catcode`\|=\active
+\expandafter\def\expandafter\dospecials\expandafter{\dospecials\do\|}
+\newcount\defcount % number of old definitions not yet repeated
+\newcount\changecount % number of new definitions that are changed
+\newcount\miscount % number of unknown references
+
+\newread\tempin
+\def\refin#1 {\openin\tempin=#1.ref
+ \ifeof\tempin\closein\tempin
+ \else\closein\tempin \let|\inref \input#1.ref \let|\crossref \fi}
+
+{\let\|=\jobname
+ \def\def{\global\advance\defcount1 \gdef}\expandafter\refin\| }
+\newwrite\refo \immediate\openout\refo=\jobname.ref
+
+\def\ref#1|#2|{\xdef\temp{#1}\expandafter\dordef\csname\vertical#2\endcsname}
+\def\dordef#1{\ifx#1\temp \global\advance\defcount-1
+ \else\global\advance\changecount1 \global\let#1\temp\fi
+ {\escapechar=-1\immediate\write\refo{\noexpand#1{\temp}}}}
+\def\eqref{\ref{\number\eqcount}}
+\def\exref{\ref{\number\excount}}
+\def\tabref|#1|{\expandafter\pageref\csname\vertical#1\endcsname}
+\def\pageref#1{\ifx#1\relax\else\global\advance\defcount-1 \fi
+ \write\refo{\noexpand#1{\number\pageno}}%
+ \write\m@ne{\ifx#1\relax New Pageref!\else
+ \ifnum#1=\pageno\else Changed Pageref!\fi\fi}}
+\def\crossref#1|{\expandafter\usedef\csname\vertical#1\endcsname}
+\def\usedef#1{\ifx#1\relax
+ \ifshowmisses\showmiss#1\fi\global\advance\miscount1 ??\else #1\fi}
+\let|=\crossref
+\def\showmiss#1{{\escapechar=-1%
+ \message{***** WARNING: Undefined reference #1\string|! *****}}}
+
+\def\cite#1.{\ifinxmode\write\bnx{[#1] \number\pageno.}\fi#1}
+{\catcode`\@=\active
+\gdef\newcite#1.{\ifinxmode\write\bnx{[#1'] \number\pageno.}\fi#1$'@$}}
+
+\outer\def\bye{
+ \ifnum\miscount>0
+ \message{(\the\miscount\space undefined references were present)}\fi
+ \ifnum\changecount>0
+ \message{(\the\changecount\space new references written on \jobname.ref)}\fi
+ \ifnum\defcount>0
+ \message{(\the\defcount\space old references dropped from \jobname.ref)}\fi
+ \par\vfill\supereject
+ \end}
+
+% Exercises
+
+\newwrite\ans
+\immediate\openout\ans=\jobname.ans
+
+\outer\def\answer{\par
+ \immediate\write\ans{}
+ \immediate\write\ans{\string\ansno\chapno.\the\excount:}
+ \copytoblankline}
+\def\copytoblankline{\begingroup\setupcopy\copyans}
+\def\setupcopy{\def\do##1{\catcode`##1=\other}\dospecials \obeylines}
+{\obeylines \gdef\copyans#1
+ {\def\next{#1}%
+ \ifx\next\empty\let\next=\endgroup %
+ \else\immediate\write\ans{\next} \let\next=\copyans\fi\next}}
+
+\def\ansno#1:{\par\medbreak\def\thisansno{\source#1}%
+ \noindent\hbox to\parindent{\bf #1\hfil}\ignorespaces}
+
+% Pictures (a subset of \LaTeX's conventions)
+\newskip\hsssglue \hsssglue=0pt plus 1fill minus 1fill \def\hsss{\hskip\hsssglue}
+
+\newdimen\unitlength \newdimen\linethickness
+\newdimen\@picheight \newdimen\@xdim \newdimen\@ydim \newdimen\@len \newdimen\@save
+\newcount\@multicount \newcount\@xarg \newcount\@yarg
+\newbox\@picbox \newbox\@mpbox
+
+\font\tenln=line10 \font\tenlnw=linew10
+\font\tencirc=lcircle10 \font\tencircw=lcirclew10
+\font\smallln=linew10 scaled 483 % that's magstep-4
+
+\def\thinlines{\let\linefont=\tenln \let\circlefont=\tencirc
+ \linethickness=\fontdimen8\linefont}
+\def\thicklines{\let\linefont=\tenlnw \let\circlefont=\tencircw
+ \linethickness=\fontdimen8\linefont}
+\thinlines
+
+\def\beginpicture(#1,#2)(#3,#4){\@picheight=#2\unitlength \let\line=\@line
+ \setbox\@picbox=\hbox to#1\unitlength\bgroup
+ \kern-#3\unitlength \lower#4\unitlength\hbox\bgroup\ignorespaces}
+\def\endpicture{\egroup\hss\egroup
+ \ht\@picbox=\@picheight \dp\@picbox=\z@
+ \leavevmode\box\@picbox}
+
+\def\put(#1,#2)#3{\raise#2\unitlength\rlap{\kern#1\unitlength #3}\ignorespaces}
+
+\def\multiput(#1,#2)(#3,#4)#5#6{\@multicount=#5
+ \@xdim=#1\unitlength \@ydim=#2\unitlength \setbox\@mpbox=\hbox{#6}%
+ \loop\ifnum\@multicount>0
+ \raise\@ydim\rlap{\kern\@xdim \unhcopy\@mpbox}%
+ \advance\@xdim#3\unitlength \advance\@ydim#4\unitlength
+ \advance\@multicount\m@ne \repeat\ignorespaces}
+
+\def\makebox(#1,#2)#3{\setbox\@picbox=\hbox to#1\unitlength{\hss#3\hss}%
+ \@ydim=\ht\@picbox \advance\@ydim-\dp\@picbox
+ \ht\@picbox=#2\unitlength \dp\@picbox=\z@
+ \leavevmode\lower.5\@ydim\box\@picbox}
+
+\newif\ifneg
+\def\@line(#1,#2)#3{\@xarg=#1 \@yarg=#2 \@len=#3\unitlength \leavevmode
+ \ifnum\@xarg<0 \reverseline \else \negfalse \@ydim=\z@\fi
+ \ifnum\@xarg=0 \@vline
+ \else\ifnum\@yarg=0 \@hline \else\@sline\fi\fi
+ \ifneg\kern-\@len\else\@save=\@ydim\fi}
+\def\reverseline{\negtrue \kern-\@len \@xarg=-\@xarg
+ \@ydim=\@len \multiply\@ydim\@yarg \divide\@ydim\@xarg \@yarg=-\@yarg}
+
+\def\@hline{\vrule height.5\linethickness depth.5\linethickness width\@len}
+\def\@vline{\kern-.5\linethickness\vrule width\linethickness
+ \ifnum\@yarg<0 height\z@ depth\else depth\z@ height\fi\@len
+ \kern-.5\linethickness}
+
+\def\@sline{\setbox\@picbox=\hbox{\linefont \count@=\@xarg \multiply\count@ 8
+ \ifnum\@yarg>0 \advance\count@\@yarg \advance\count@-9
+ \else \advance\count@-\@yarg \advance\count@ 55 \fi \char\count@}%
+ \ifnum\@yarg<0 \@picheight=-\ht\@picbox \advance\@ydim\@picheight
+ \else \@picheight=\ht\@picbox \fi
+ \@xdim=\wd\@picbox \@save=\@ydim
+ \loop\ifdim\@xdim<\@len \raise\@ydim\copy\@picbox
+ \advance\@xdim\wd\@picbox \advance\@ydim\@picheight \repeat
+ \advance\@xdim-\@len \kern-\@xdim
+ \multiply\@xdim\@yarg \divide\@xdim\@xarg \advance\@ydim-\@xdim
+ \raise\@ydim\box\@picbox}
+
+\def\vector(#1,#2)#3{\@line(#1,#2){#3}%
+ \ifnum\@xarg=0 \@vvector \else\ifnum\@yarg=0 \@hvector \else\@svector\fi\fi}
+\def\@hvector{\ifneg\rlap{\linefont\char27}\else
+ \smash{\llap{\linefont\char45}}\fi} % we have to smash because of font bug
+\def\@vvector{\ifnum\@yarg<0 \raise-\@len\rlap{\linefont\char63}%
+ \else\setbox\@picbox=\rlap{\linefont\char54}\advance\@len-\ht\@picbox
+ \raise\@len\box\@picbox\fi}
+
+\def\@svector{\setbox\@picbox=\hbox to\z@{\linefont
+ \ifnum\@yarg<0 \count@=55 \@yarg=-\@yarg \else\count@=-9 \fi
+ \ifneg\multiply\@xarg16 \multiply\@yarg2
+ \else\hss % \llap
+ \ifnum\@xarg>2 \multiply\@xarg9 \multiply\@yarg2 \advance\count@29
+ \else\ifnum\@yarg>2 \multiply\@xarg16 \multiply\@yarg9 \advance\count@-20
+ \else\multiply\@xarg24 \multiply\@yarg3 \fi\fi\fi
+ \advance\count@\@xarg \advance\count@\@yarg \char\count@
+ \ifneg\hss\fi}% \rlap
+ \raise\@save\box\@picbox}
+
+\def\disk#1{\@len=#1\unitlength \count@='160 \@diskcirc}
+\def\circle#1{\@len=#1\unitlength \count@='140 \@diskcirc}
+\def\@diskcirc{\setbox\@picbox=\hbox{\circlefont\char\count@}\@xdim=\wd\@picbox
+ \leavevmode \ifdim\@len>15.499\@xdim \@bigdc \else \@smalldc\fi}
+\def\@bigdc{\ifnum\count@<'160 \@bigcirc
+ \else \@len=15\@xdim \@diskcirc\fi}
+\def\@smalldc{{\advance\@len-.5\@xdim
+ \loop\ifdim\@xdim<\@len \advance\count@\@ne \advance\@xdim\wd\@picbox\repeat
+ \hbox{\circlefont\char\count@}}}
+\def\@bigcirc{{\circlefont\count@=15
+ \setbox\@picbox=\hbox{\char\count@}\@xdim=\wd\@picbox
+ \ifdim\@len>2.5\@xdim \@len=2.5\@xdim\fi
+ \advance\@len-.125\wd\@picbox
+ \loop\ifdim\@xdim<\@len \advance\count@ 4 \advance\@xdim.25\wd\@picbox\repeat
+ \@ydim=.5\@xdim \advance\@ydim.5\linethickness
+ \setbox\@picbox=\vbox{\hbox{\char\count@\advance\count@-3\char\count@}%
+ \nointerlineskip
+ \hbox{\advance\count@\m@ne\char\count@\advance\count@\m@ne\char\count@}}%
+ \kern-\@ydim\lower\@ydim\box\@picbox}}
+
+\newif\ifovaltl \newif\ifovaltr \newif\ifovalbl \newif\ifovalbr
+\ovaltltrue \ovaltrtrue \ovalbltrue \ovalbrtrue
+\def\oval(#1,#2){\@xdim=#1\unitlength \@ydim=#2\unitlength
+ {\circlefont \setbox\@picbox=\hbox{\char0}
+ \ifdim\@xdim<\wd\@picbox \@xdim=\wd\@picbox\fi
+ \ifdim\@ydim<\wd\@picbox \@ydim=\wd\@picbox\fi
+ \@save=\@xdim \ifdim\@ydim<\@save \@save=\@ydim \fi
+ \count@=39
+ \loop \setbox\@picbox=\hbox{\char\count@}\ifdim\@save<\wd\@picbox
+ \advance\count@-4 \repeat
+ \setbox\strutbox=\hbox{\vrule height\ht\@picbox depth\dp\@picbox width\z@
+ \kern\wd\@picbox}%
+ \@save=.5\wd\@picbox \advance\@save-.5\linethickness
+ \setbox0=\hbox to\@xdim{\ifovaltl\char\count@\else\strut\fi
+ \kern-\@save\leaders\hrule height\ifovaltl\linethickness\else\z@\fi\hfil
+ \leaders\hrule height\ifovaltr\linethickness\else\z@\fi\hfil\kern\@save
+ \ifovaltr\advance\count@-3\char\count@\else\strut\fi\kern-\wd\@picbox}%
+ \advance\count@\m@ne
+ \setbox2=\hbox to\@xdim{\ifovalbl\char\count@\else\strut\fi
+ \kern-\@save\leaders\hrule height\ifovalbl\linethickness\else\z@\fi\hfil
+ \leaders\hrule height\ifovalbr\linethickness\else\z@\fi\hfil\kern\@save
+ \ifovalbr\advance\count@\m@ne\char\count@\else\strut\fi\kern-\wd\@picbox}%
+ \@save=\@ydim \advance\@save-\wd\@picbox \divide\@save 2
+ \setbox\@picbox=\vbox{\box0\nointerlineskip
+ \hbox to\@xdim{\vrule height\@save width\ifovaltl\linethickness\else\z@\fi
+ \hfil\ifovaltr\vrule width\linethickness\kern-\linethickness\fi}%
+ \nointerlineskip
+ \hbox to\@xdim{\vrule height\@save width\ifovalbl\linethickness\else\z@\fi
+ \hfil\ifovalbr\vrule width\linethickness\kern-\linethickness\fi}%
+ \nointerlineskip\box2}%
+ \@save=.5\@ydim \advance\@save.5\linethickness \leavevmode
+ \kern-.5\@xdim \kern-.5\linethickness \lower\@save\box\@picbox}}
+
+\def\cpic#1\endcpic{\vcenter{\hbox{\beginpicture#1\endpicture}}}
+
+% Squines (quadratic splines)
+% example of use: to plot f(x) between x0 and x1, you can say
+% \put(0,0){\squine(x0,xm,x1,y0,ym,y1)}, where y0=f(x0), y1=f(x1)
+% xm=(y0-y1+s1x1-s0x0)/(s1-s0), ym=(s0(s1x1-y1)-s1(s0x0-y0))/(s1-s0),
+% s0=f'(x0), and s1=f'(x1).
+
+\newdimen\@xi \newdimen\@xii \newdimen\@xiii \newdimen\@xiv
+\newdimen\@xpt \newdimen\@xoldpt
+\newdimen\@yi \newdimen\@yii \newdimen\@yiii \newdimen\@yiv
+\newdimen\@ypt \newdimen\@yoldpt
+\def\squine(#1,#2,#3,#4,#5,#6){\setbox\@picbox\hbox{\tencirc q}%
+ \global\@xoldpt=#1\unitlength \global\@yoldpt=#4\unitlength \kern\@xoldpt
+ \@xi=\@xoldpt \@xii=#2\unitlength \@xiii=#3\unitlength
+ \@yi=\@yoldpt \@yii=#5\unitlength \@yiii=#6\unitlength
+ \squinerec
+ \@xpt=#3\unitlength \@ypt=#6\unitlength \@addpoint
+ \raise\@ypt\copy\@picbox}
+\newif\iffar
+\def\squinerec{\farfalse \testnear\@xi\@xiii \testnear\@yi\@yiii
+ \iffar \decast \fi}
+\def\testnear#1#2{\@save=#1\advance\@save-#2%
+ \ifdim\@save<\z@ \@save=-\@save\fi \ifdim\@save>\p@ \fartrue \fi}
+\def\decast{\@xpt=\@xi \advance\@xpt\@xii \divide\@xpt2
+ \advance\@xii\@xiii \divide\@xii2
+ \@xiv=\@xpt \advance\@xiv\@xii \divide\@xiv2
+ \@ypt=\@yi \advance\@ypt\@yii \divide\@ypt2
+ \advance\@yii\@yiii \divide\@yii2
+ \@yiv=\@ypt \advance\@yiv\@yii \divide\@yiv2
+ \begingroup\@xii=\@xpt \@xiii=\@xiv
+ \@yii=\@ypt \@yiii=\@yiv \squinerec\endgroup
+ \@xpt=\@xiv \@ypt=\@yiv \@addpoint
+ \@xi=\@xiv \@yi=\@yiv \squinerec}
+\def\@addpoint{%\message{(\the\@xpt,\the\@ypt)}%
+ \global\advance\@xoldpt-\@xpt \wd\@picbox=-\@xoldpt
+ \raise\@yoldpt\copy\@picbox \global\@xoldpt=\@xpt \global\@yoldpt=\@ypt}
+
+% Math operators
+\def\2{\mskip-.5mu2\mskip.5mu}
+\newmuskip\lessfortimes \lessfortimes=-2mu minus -2mu
+\def\cdt{\mskip\lessfortimes\cdot\mskip\lessfortimes}
+\def\nullnum{\phantom{0}}
+\def\twonullnum{\phantom{00}}
+\def\bex{\mskip-2mu}
+\def\twoconditions#1#2{_{\scriptstyle#1\atop\scriptstyle#2}}
+\def\tworestrictions#1#2{\vcenter{\offinterlineskip
+ \halign{\strut\hfil##\hfil\cr#1\cr#2\cr}}}
+\def\dts{\mathinner{\ldotp\ldotp}}
+\def\[#1]{[\hbox{$\mskip1mu\thickmuskip=\thinmuskip#1\mskip1mu$}]}
+\def\bigi[#1\bigr]{\bigl[\hbox{$\thickmuskip=\thinmuskip#1$}\bigr]}
+\def\Bigi[#1\Bigr]{\Bigl[\hbox{$\thickmuskip=\thinmuskip#1$}\Bigr]}
+\def\prp(#1){(\hbox{$\thickmuskip=\thinmuskip#1$})}
+\def\pbigi(#1\bigr){\bigl(\hbox{$\thickmuskip=\thinmuskip#1$}\bigr)}
+\def\_#1{\def\next{#1}%
+ \ifx\next\risingsign\expandafter\rising\else^{\underline{#1}}\fi}
+\def\risingsign{^}
+\def\rising#1{^{\overline{#1}}}
+\def\dotminus{\mathbin{\buildrel{\hbox{\runhead.}}\over{\smash{-}\vphantom{_2}}}}
+\let\divides=\backslash
+\def\edivides{\divides\mskip-4mu\divides}
+\def\ndivides{\mathpalette\notdiv\relax}
+\def\notdiv#1#2{\setbox0=\hbox{$#1\divides$}%
+ \vcenter{\hbox to\wd0{$\hss\scriptscriptstyle/\hss$}}\kern-\wd0
+ \vcenter{\hbox to\wd0{$\hss\kern.5pt\scriptscriptstyle/\hss$}}\kern-\wd0
+ \box0\relax}
+\def\spec{\mathop{\rm Spec}}
+\def\half{{1\over2}}
+\def\rp{\mathchar"323F } % relatively prime
+\def\lcm{\mathop{\rm lcm}}
+\def\And{\quad{\rm and}\quad}
+\let\==\equiv
+\def\tmod#1{(mod~$#1$)}
+\let\implies=\Longrightarrow
+\def\?{\hbox{!`}} % subfactorial
+\def\hyp{\mathop{F{}}\nolimits\hyper}
+\def\tightplus{\medmuskip=1.5mu\relax}
+\def\hyper#1#2#3{\mathchoice{\tightplus
+ \hbox{$\displaystyle\biggl({#1\atop#2}\Big\vert\,{#3}\!\biggr)$}}%
+ {\bigl({#1\atop#2}\vert\mskip2mu#3\bigr)}%
+ {}{}} % used only in D and T styles
+%\def\hypk_#1{\mathop{F{}}_{#1}\nolimits\hyper} % confl with mFn convention
+\def\hypk_#1#2#3#4{\mathop{F{}}\mathchoice{\tightplus
+ \hbox{$\displaystyle\biggl({#2\atop#3}\Big\vert\,{#4}\!\biggr)$}%
+ \lower\fontdimen11\mathsym\hbox{$\scriptstyle\!#1$}}%
+ {\bigl({#2\atop#3}\vert\mskip2mu#4\bigr)\lower\fontdimen12\mathsym
+ \hbox{$\scriptstyle\!#1$}}%
+ {}{}} % used only in D and T styles
+\def\double(#1\choose#2){\mathchoice{\biggl(\!\!{#1\choose#2}\!\!\biggr)}
+ {\bigl(\!{#1\choose#2}\!\bigr)}{}{}} % only D and T styles
+\def\hypstrut{\vphantom{_1\_^k}} % if there's another denominator with \_^k
+\def\deg{\mathop{\rm deg}}
+\def\Bscr{{\scr B}}
+\def\Escr{{\scr E}}
+\def\Fscr{{\scr F}}
+\def\Pscr{{\scr P}}
+\def\Sscr{{\scr S}}
+\def\adj{\relbar\joinrel\relbar} % adjacent in a graph
+\let\<=\langle \let \>=\rangle
+\def\Pr{\mathop{\rm Pr}\nolimits}
+\def\Mean{\mathop{\rm Mean}\nolimits}
+\def\Var{\mathop{\rm Var}\nolimits}
+\def\between{\big\vert\hbox{\vphantom)}} % \between_a^b
+{\catcode`\'=\active \gdef'{^\bgroup\mskip2mu\prim@s}} % more space before '
+\def\array#1[#2]{\hbox{\tt#1[$#2$]}}
+\def\given{\mskip1mu\vert\mskip1mu}
+\def\euler{\atopwithdelims<>}
+\def\Euler#1#2{\mathchoice{\biggl<\mskip-7mu{#1\euler#2}\mskip-7mu\biggr>}%
+ {\bigl<\!{#1\euler#2}\!\bigr>}{}{}}
+
+\newbox\phihatbox \newbox\scrphihatbox
+\setbox\phihatbox=\hbox{$\phi$} \ht\phihatbox=1ex
+\setbox\scrphihatbox=\hbox{$\scriptstyle\phi$}
+ \ht\scrphihatbox=\fontdimen5\mathsublet
+\setbox\phihatbox=\hbox{$\widehat{\box\phihatbox}$}
+\setbox\scrphihatbox=\hbox{$\hat{\box\scrphihatbox}$}
+\def\phihat{\mathchoice{\copy\phihatbox}{\copy\phihatbox}%
+ {\copy\scrphihatbox}{{\hat\phi}}}
+
+\newbox\mathsizebox
+\def\setmathsize#1{\global\setbox\mathsizebox=\hbox{\displaymath#1$}}
+\def\mathsize#1{\hbox to\wd\mathsizebox{\displaymath#1$\hss}}
+
+\newbox\sqrtstrutbox
+\setbox\sqrtstrutbox=\hbox{\vrule height10.5pt width\z@}
+\def\strutsqrt#1{\copy\sqrtstrutbox\sqrt{{}^{\mathstrut}#1}}
+
+\newbox\Sqbox % for sum of squares
+\setbox\Sqbox=\vbox{\tenrm\hrule height.6pt\kern-.6pt
+ \hbox to1.5ex{\vrule height1.5ex width.6pt\hss\vrule width.6pt}\kern-.6pt
+ \hrule height.3pt depth.3pt}
+\def\Sq{\mskip1.5mu\copy\Sqbox\mskip1.5mu}
+
+% primitive index macros
+% "stuff for index" will go into a file for sorting and into normal text
+% "!stuff for index" will go into the file only
+\expandafter\def\expandafter\dospecials\expandafter{\dospecials\do\"}
+\def\hexcode{"} \catcode`\"=\active
+
+\newif\ifinxmode
+\newwrite\inx \newwrite\bnx
+\newbox\inxbox
+
+\newif\ifsilent
+\def\beginxref{\futurelet\next\beginxrefswitch}
+\def\beginxrefswitch{\ifx\next!\let\next=\silentxref
+ \else\silentfalse\let\next=\xref\fi \next}
+\def\silentxref!{\silenttrue\xref}
+\let"=\beginxref
+
+\def\xref#1"{\ifinxmode\edef\text{#1}\makexref\fi
+ \ifsilent\ignorespaces\else#1\fi}
+\def\makexref{\global\setbox\inxbox=%
+ \vbox{\unvbox\inxbox\allowbreak\hbox{\inxstyle\text}}%
+ \xdef\writeit{\write\inx{\text\space!\space
+ \noexpand\number\pageno.}}\writeit}
+
+% Final considerations
+\catcode`\@=\active \def@{\mskip1mu\relax}
+\expandafter\def\expandafter\dospecials\expandafter{\dospecials\do\@}
+
+\hyphenation{logical Mac-Mahon hyper-geo-metric hyper-geo-met-rics Ber-noulli}
+
+\preprintfalse % WE ARE MAKING THE REAL BOOK!
+\inxmodetrue % WE ARE PREPARING A ROUGH INDEX
+\showmissestrue % THE REFERENCES SHOULD ALL BE READY NOW
+
+\ifinxmode\immediate\openout\inx=\jobname.inx \fi % file for index reminders
+\ifinxmode\immediate\openout\bnx=\jobname.bnx \fi % file for bib reminders
+
+% To make the book:
+% First TeX BIB, to get BIB.REF correct. (Must have \cite entries.)
+% Then TeX CHAP1..CHAP9, PREF, ANS, CRED, FRONT, CONT.
+% Then make BNX file from individual *.BNX files including BIB.BNX.
+% Then reTeX BIB.
+% *.INX files are raw data only. Index and Contents are prepared by hand.
+
+% To produce only a subset of pages, put the page numbers on separate
+% lines in a file called pages.tex, ended by 999
+% WARNING: This will screw up the .grf file! Save it, then restore it.
+% WARNING: This may screw up the .ref file (if there are \tabrefs). Ditto.
+\let\Shipout=\shipout
+\newread\pages \newcount\nxtpg \openin\pages=pages
+\def\getnxtpg{\ifeof\pages\else
+ {\endlinechar=-1\read\pages to\next
+ \ifx\next\empty % in this case we should have eof now
+ \else\global\nxtpg=\next\fi}\fi}
+\ifeof\pages\else\message{OK, I'll ship only the requested pages!}
+ \getnxtpg\fi
+\def\shipout{\ifeof\pages\let\next=\Shipout
+ \else\ifnum\pageno=\nxtpg\getnxtpg\let\next=\Shipout
+ \else\let\next=\Tosspage\fi\fi \next}
+\newbox\garbage \def\Tosspage{\deadcycles=0\setbox\garbage=}