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+% OPmac
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Petr Olsak, 2012
+
+%% The history of versions is at the end of this file, after \endpinput
+
+\ifx\OPmacversion\undefined \else \endinput \fi
+\def\OPmacversion{Dec. 2012}
+
+\immediate\write16{This is OPmac (Olsak's Plain macros), version <\OPmacversion>}
+
+%%%%%%%%%%%%%% Basic macros, sec. 3.1 in opmac-d.pdf
+
+\newcount\tmpnum % auxiliary count
+\newdimen\tmpdim % auxiliary dimen
+
+\def\opwarning#1{\immediate\write16{l.\the\inputlineno\space OPmac WARNING: #1.}}
+
+\def\addto#1#2{\expandafter\def\expandafter#1\expandafter{#1#2}}
+
+\def\protectlist{}
+\def\addprotect#1{\addto\protectlist{\doprotect#1}}
+\addprotect~
+
+\newif\ifpdftex \pdftextrue
+\ifx\pdfoutput\undefined \pdftexfalse
+\else \ifnum\pdfoutput=0 \pdftexfalse \fi \fi
+
+\def\sdef#1{\expandafter\def\csname#1\endcsname}
+\def\sxdef#1{\expandafter\xdef\csname#1\endcsname}
+
+\def\adef#1{\lccode`\~=`#1\catcode`#1=13
+ \afterassignment\lccodetiezero
+ \lowercase{\def~}%
+}
+\def\lccodetiezero{\lccode`\~=0 }
+
+\def\isdefined #1#2{\expandafter\ifx \csname#1\endcsname \relax
+ \csname iffalse\expandafter\endcsname
+ \else
+ \csname iftrue\expandafter\endcsname
+ \fi
+}
+\def\isinlist#1#2#3{\def\tmp##1#2##2\end{\def\tmp{##2}%
+ \ifx\tmp\empty \csname iffalse\expandafter\endcsname \else
+ \csname iftrue\expandafter\endcsname \fi}%
+ \expandafter\tmp#1#2\end
+}
+\def\isnextchar#1#2#3{\def\tmpa{#2}\def\tmpb{#3}%
+ \let\tmp=#1\futurelet\next\isnextcharA
+}
+\def\isnextcharA{\ifx\tmp\next\expandafter\tmpa\else\expandafter\tmpb\fi}
+
+\def\uv#1{\clqq#1\crqq}
+\let\\=\undefined
+{\lccode`\?=`\% \lowercase{\gdef\percent{?}}}
+\def\,{\ifmmode \mskip\thinmuskip \else \kern.166em \fi}
+
+
+%%%%%%%%%%%%%% Global parameters, sec. 3.2 in opmac-d.pdf
+
+\widowpenalty=10000
+\clubpenalty=10000
+\showboxdepth=7
+\showboxbreadth=30
+
+\newdimen\iindent \iindent=\parindent
+ % indentation of items, TOC, captions, list of bib. references
+\newdimen\ttindent \ttindent=\parindent
+ % indentation in \begtt...\endtt and \verbinput
+
+\def\ttskip{\medskip} % space above and below \begtt, \verbinput
+\mathchardef\ttpenalty=100 % penalty between lines in \begtt, \verbinput
+\def\tthook{} % hook in \begtt, \verbinput
+\def\intthook{} % hook in in-text verbatim
+
+\def\iiskip{\medskip} % space above and below \begitems...\enditems
+\def\bibskip{\smallskip} % space between bibitems
+
+\def\tabstrut{\strut} % strut in the \table
+\def\tabiteml{\enspace} % left material before each \table item
+\def\tabitemr{\enspace} % right material after each \table item
+\def\vvkern{1pt} % space between vertical lines
+\def\hhkern{1pt} % space between horizontal lines
+
+\def\multiskip{\medskip} % space above and below \begmulti...\endmulti
+\newdimen\colsep \colsep=2em % space between columns
+
+\newdimen\mnoteindent \mnoteindent=10pt % ditance between mnote and text
+\newdimen\mnotesize \mnotesize=20mm % the width of the mnote paragraph
+
+\def\picdir{} % the directory with picture files
+\def\bibtexhook{} % hook in \usebibtex and \usebbl macros
+\def\chaphook{} % hook in \chap
+\def\sechook{} % hook in \sec
+\def\secchook{} % hook in \secc
+\def\cnvhook{} % hook before conversion of outlines
+\def\pghook{} % hook in \output rutine
+
+
+%%%%%%%%%%%%%% OPmac, CSplain and LaTeX logos, sec. 3.3 in opmac-d.pdf
+
+\def\OPmac{\leavevmode
+ \lower.2ex\hbox{\thefontscale[1400]O}\kern-.86em P{\em mac}}
+\def\CS{$\cal C$\kern-.1667em\lower.5ex\hbox{$\cal S$}}
+\def\csplain{\CS plain}
+
+\def\LaTeX{\tmpdim=.42ex L\kern-.36em \kern\slantcorr % slant correction
+ \raise\tmpdim\hbox{\thefontscale[710]A}%
+ \kern-.15em \kern-\slantcorr \TeX}
+\def\slantcorr{\expandafter\ignorept\the\fontdimen1\the\font\tmpdim}
+
+\addprotect\TeX \addprotect\OPmac \addprotect\CS \addprotect\LaTeX
+
+
+%%%%%%%%%%%%%% Sizes of fonts and \baselineskip, sec. 3.4 in opmac-d.pdf
+
+\ifx\regfont\undefined
+ \opwarning{csplain version <Nov. 2012> or later is recommended}
+ % macros from csplain, file csfontsm.tex:
+ \font\tenbi=csbxti10 \def\bi{\tenbi}
+ \def\sizespec{}
+ \def\resizefont #1{\expandafter
+ \font\expandafter#1\expandafter\resizefontskipat\fontname#1 \relax}
+ \def\regfont#1{\expandafter\def\expandafter\resizeall\expandafter{%
+ \resizeall \resizefont#1}}
+ \def\resizeall{}
+ \regfont\tenrm \regfont\tenit \regfont\tenbf \regfont\tenbi \regfont\tentt
+\fi
+
+\input ams-math % ams-math.tex is in csplain package Nov. 2012 or later
+
+\def\resizefontskipat#1 #2\relax{\whichtfm{#1} \sizespec\relax}
+
+\newdimen\ptunit \ptunit=1pt
+\newdimen\fontdim \fontdim=10pt
+
+{\lccode`\?=`\p \lccode`\!=`\t \lowercase{\gdef\ignorept#1?!{#1}}}
+
+\def\typosize[#1/#2]{\fontsizex[#1]\setbaselineskip[#2]\ignorespaces}
+\def\typoscale[#1/#2]{\fontscalex[#1]\scalebaselineskip[#2]\ignorespaces}
+
+\def\fontsizex[#1]{\if$#1$\else
+ \textfontsize[#1]%
+ \tmpdim=0.7\fontdim \edef\tmpa{\expandafter\ignorept\the\tmpdim}%
+ \tmpdim=0.5\fontdim \edef\tmpb{\expandafter\ignorept\the\tmpdim}%
+ \edef\tmp{\noexpand\setmathsizes[\expandafter\ignorept\the\fontdim/\tmpa/\tmpb]}%
+ \tmp \normalmath
+ \fi
+}
+\def\textfontsize[#1]{\if$#1$\else
+ \fontdim=#1\ptunit
+ \let\dgsize=\fontdim
+ \edef\sizespec{at\the\fontdim}%
+ \resizeall \rm
+ \fi
+}
+\def\setbaselineskip[#1]{\if$#1$\else
+ \tmpdim=#1\ptunit
+ \baselineskip=\tmpdim \relax
+ \bigskipamount=\tmpdim plus.33333\tmpdim minus.33333\tmpdim
+ \medskipamount=.5\tmpdim plus.16666\tmpdim minus.16666\tmpdim
+ \smallskipamount=.25\tmpdim plus.08333\tmpdim minus.08333\tmpdim
+ \normalbaselineskip=\tmpdim
+ \jot=.25\tmpdim
+ \maxdepth=.33333\tmpdim
+ \setbox\strutbox=\hbox{\vrule height.709\tmpdim depth.291\tmpdim width0pt}%
+ \fi
+}
+\def\withoutunit#1#2{\expandafter#1\expandafter[\expandafter\ignorept\the#2]}
+
+\def\fontscalex[#1]{\if$#1$\else
+ \tmpdim=#1pt \divide\tmpdim by1000
+ \tmpdim=\expandafter\ignorept\the\tmpdim \fontdim
+ \withoutunit\fontsizex\tmpdim
+ \fi
+}
+\def\textfontscale[#1]{\if$#1$\else
+ \tmpdim=#1pt \divide\tmpdim by1000
+ \tmpdim=\expandafter\ignorept\the\tmpdim \fontdim
+ \withoutunit\textfontsize\tmpdim
+ \fi
+}
+\def\scalebaselineskip[#1]{\if$#1$\else
+ \tmpdim=#1pt \divide\tmpdim by1000
+ \tmpdim=\expandafter\ignorept\the\tmpdim \baselineskip
+ \withoutunit\setbaselineskip\tmpdim
+ \fi
+}
+\def\thefontsize[#1]{%
+ \expandafter\let \expandafter\thefont \the\font
+ \def\sizespec{at#1\ptunit}\def\dgsize{#1\ptunit}\resizefont\thefont
+ \thefont \ignorespaces
+}
+\def\thefontscale[#1]{%
+ \tmpdim=#1pt \divide\tmpdim by1000
+ \tmpdim=\expandafter\ignorept\the\tmpdim \fontdim
+ \withoutunit\thefontsize\tmpdim
+}
+\def\magstep#1{\ifcase#1 1000\or1200\or1440\or1728\or2074\or2488\fi\space}
+
+\def\em {\expandafter\ifx \the\font \tenit \additcorr \rm \else
+ \expandafter\ifx \the\font \tenbf \bi\aftergroup\/\else
+ \expandafter\ifx \the\font \tenbi \additcorr \bf \else
+ \it \aftergroup\/\fi\fi\fi}
+\def\additcorr{\ifdim\lastskip>0pt \skip0=\lastskip \unskip\/\hskip\skip0 \else\/\fi}
+
+\addprotect\thefontsize \addprotect\thefontscale
+\addprotect\typosize \addprotect\typoscale
+\addprotect\textfontsize \addprotect\textfontscale
+\addprotect\em
+
+
+%%%%%%%%%%%%%% Multilingual support, sec. 3.5 in opmac-d.pdf
+
+\def\mtext#1{\csname mt:#1:\csname lan:\the\language\endcsname\endcsname}
+
+\sdef{mt:chap:en}{Chapter} \sdef{mt:chap:cz}{Kapitola} \sdef{mt:chap:sk}{Kapitola}
+\sdef{mt:t:en}{Table} \sdef{mt:t:cz}{Tabulka} \sdef{mt:t:sk}{Tabu\v lka}
+\sdef{mt:f:en}{Figure} \sdef{mt:f:cz}{Obr\'azek} \sdef{mt:f:sk}{Obr\'azok}
+
+\ifx\r\undefined \csname csaccents\endcsname \fi
+
+\sdef{lan:0}{en} \sdef{lan:100}{en} \sdef{lan:101}{en}
+\sdef{lan:5}{cz} \sdef{lan:15}{cz} \sdef{lan:115}{cz}
+\sdef{lan:6}{sk} \sdef{lan:16}{sk} \sdef{lan:116}{sk}
+
+%%%%%%%%%%%%%% REF file, sec 3.6 in opmac-d.pdf
+
+\newwrite\reffile
+\newread\testin
+
+\def\wrefrelax#1#2{}
+\let\wref=\wrefrelax
+
+\def\inputref{
+ \openin\testin=\jobname.ref
+ \ifeof\testin \else
+ \closein\testin
+ \input \jobname.ref
+ \fnotenum=0 \mnotenum=0
+ \immediate\openout\reffile=\jobname.ref
+ \def\wref##1##2{\write\reffile{\string##1##2}}
+ \immediate\write\reffile {\percent\percent\space OPmac - REF file}
+ \fi
+}
+\def\openref{%
+ \ifx\wref\wrefrelax
+ \immediate\openout\reffile=\jobname.ref
+ \gdef\wref##1##2{\write\reffile{\string##1##2}}%
+ \immediate\write\reffile
+ {\percent\percent\space OPmac - REF file (\string\openref)}%
+ \fi
+ \gdef\openref{}%
+}
+
+%%%%%%%%%%%%%% \label, \ref, \pgref, sec. 3.7 in opmac-d.pdf
+
+\def\label[#1]{\xdef\lastlabel{#1}\ignorespaces}
+
+\def\wlabel#1{%
+ \ifx\lastlabel\undefined \else
+ \dest[ref:\lastlabel]{2.1em}%
+ \edef\tmp{\wref\Xlabel{{\lastlabel}{#1}}}\tmp
+ \isdefined{lab:\lastlabel}\iftrue \else
+ \sxdef{lab:\lastlabel}{#1}%
+ \fi
+ \global\let\lastlabel=\undefined
+ \fi
+}
+\def\ref[#1]{\isdefined{lab:#1}%
+ \iftrue \reflink[#1]{\csname lab:#1\endcsname}%
+ \else ??\opwarning{label [#1] unknown. Try to TeX me again}\openref
+ \fi
+}
+\def\pgref[#1]{\isdefined{pgref:#1}%
+ \iftrue \pglink{\csname pgref:#1\endcsname}%
+ \else ??\opwarning{pg-label [#1] unknown. Try to TeX me again}\openref
+ \fi
+}
+\def\Xlabel#1#2{\sxdef{lab:#1}{#2}\sxdef{pgref:#1}{\the\lastpage}}
+
+
+%%%%%%%%%%%%%% Chapters, sections, subsections -- sec. 3.8 in opmac-d.pdf
+
+\def\titfont{\typoscale[\magstep4/\magstep4]\bf}
+\def\chapfont{\typoscale[\magstep3/\magstep3]\bfshape}
+\def\secfont{\typoscale[\magstep2/\magstep2]\bfshape}
+\def\seccfont{\typoscale[\magstep1/\magstep2]\bfshape}
+\def\bfshape{\let\tenit=\tenbi \boldmath \bf}
+
+\newcount\chapnum \newcount\secnum \newcount\seccnum
+
+\def\tit#1\par{\vglue4em
+ {\leftskip=0pt plus1fill \rightskip=\leftskip
+ \titfont \noindent #1\unskip\par}%
+ \nobreak\bigskip
+}
+\def\chap#1\par{\advance\chapnum by1
+ \chaphook \secnum=0 \seccnum=0 \relax
+ \edef\thechapnum{\the\chapnum.}%
+ \printchap{#1\unskip}%
+ \wlabel\thechapnum \wcontents\Xchap\thechapnum{#1}\nobreak
+}
+\def\sec#1\par{\par\advance\secnum by1
+ \sechook \seccnum=0 \tnum=0 \fnum=0 \dnum=0 \relax
+ \edef\thesecnum{\othe\chapnum.\the\secnum}%
+ \printsec{#1\unskip}%
+ \insertmark\thesecnum{#1\unskip}%
+ \wlabel\thesecnum \wcontents\Xsec\thesecnum{#1}\nobreak
+}
+\def\secc#1\par{\advance\seccnum by1
+ \secchook \relax
+ \edef\theseccnum{\othe\chapnum.\othe\secnum.\the\seccnum}%
+ \printsecc{#1\unskip}%
+ \wlabel\theseccnum \wcontents\Xsecc\theseccnum{#1}\nobreak
+}
+\def\wcontents#1#2#3{%
+ \expandafter\wref\expandafter#1\expandafter
+ {\expandafter{#2}{#3}{\the\pageno}}%
+}
+\def\othe#1.{\ifnum#1>0 \the#1.\fi}
+\def\thechapnum{} \def\thesecnum{} \def\theseccnum{}
+
+\def\insertmark#1#2{\toks0={#2}\mark{{#1} {\the\toks0}}}
+
+\def\printchap#1{\vfil\break
+ {\chapfont \noindent \dest[toc:\thechapnum]{1.3em}%
+ \mtext{chap} \thechapnum\par\nobreak\smallskip\noindent #1\nbpar}%
+ \nobreak\bigskip
+ \firstnoindent
+}
+\def\printsec#1{\removelastskip \goodbreak \bigskip
+ {\secfont \noindent \dest[toc:\thesecnum]{1.3em}\thesecnum\quad #1\nbpar}%
+ \nobreak\medskip
+ \firstnoindent
+}
+\def\printsecc#1{\removelastskip \goodbreak \medskip
+ {\seccfont \noindent
+ \dest[toc:\theseccnum]{1.3em}\theseccnum\quad #1\nbpar}%
+ \nobreak\medskip
+ \firstnoindent
+}
+\def\afternoindent{\global\everypar={\wipeepar\setbox0=\lastbox}}
+\def\wipeepar{\global\everypar={}}
+\let\firstnoindent=\afternoindent
+\def\nbpar{{\interlinepenalty=10000\par}}
+\def\nl{\hfil\break}
+
+
+%%%%%%%%%%%%%% Captions, equations -- sec. 3.9 in opmac-d.pdf
+
+\newcount\tnum \newcount\fnum \newcount\dnum
+
+\def\thetnum{\thesecnum.\the\tnum}
+\def\thefnum{\thesecnum.\the\fnum}
+\def\thednum{(\the\dnum)}
+
+\def\caption/#1 {\isdefined{#1num}%
+ \iftrue \advance \csname #1num\endcsname by1
+ \else \opwarning{Unknown caption /#1}%
+ \fi
+ \bgroup
+ \leftskip=\iindent plus1fil
+ \rightskip=\iindent plus-1fil
+ \parfillskip=\iindent plus2fil
+ \def\par{\endgraf\egroup}%
+ \noindent \wlabel{\csname the#1num\endcsname}%
+ {\bf \mtext{#1} \csname the#1num\endcsname}\enspace
+}
+\def\eqmark{\global\advance\dnum by1
+ \ifinner\else\eqno \fi \wlabel\thednum \thednum
+}
+
+%%%%%%%%%%%%%% Items -- sec. 3.10 in opmac-d.pdf
+
+\newcount\itemnum \itemnum=0
+
+\def\begitems{\iiskip\bgroup
+ \itemnum=0 \adef*{\startitem}
+ \advance\leftskip by\iindent
+ \let\printitem=\normalitem
+}
+\def\enditems{\par\egroup\iiskip}
+
+\def\startitem{\par \advance\itemnum by1
+ \noindent\llap{\printitem}\ignorespaces}
+\def\normalitem{$\bullet$\enspace}
+
+\def\style#1{\expandafter\let\expandafter\printitem\csname item:#1\endcsname
+ \ifx\printitem\relax \let\printitem=\normalitem \fi
+}
+\sdef{item:o}{\raise.4ex\hbox{$\scriptscriptstyle\bullet$} }
+\sdef{item:-}{- }
+\sdef{item:n}{\the\itemnum. }
+\sdef{item:N}{\the\itemnum) }
+\sdef{item:i}{(\romannumeral\itemnum) }
+\sdef{item:I}{\uppercase\expandafter{\romannumeral\itemnum}\kern.5em}
+\sdef{item:a}{\athe\itemnum) }
+\sdef{item:A}{\uppercase\expandafter{\athe\itemnum}) }
+\sdef{item:x}{\raise.3ex\fullrectangle{.6ex} }
+\sdef{item:X}{\raise.2ex\fullrectangle{1ex}\kern.5em}
+
+\def\fullrectangle#1{\hbox{\vrule height#1 width#1}}
+
+\def\athe#1{\ifcase#1?\or a\or b\or c\or d\or e\or f\or g\or h\or i\or j\or k\or l\or
+ m\or n\or o\or p\or q\or r\or s\or t\or u\or v\or w\or x\or y\or z\else ?\fi
+}
+
+%%%%%%%%%%%%%% TOC -- sec. 3.11 in opmac-d.pdf
+
+\def\toclist{} \newif\ifischap \ischapfalse
+
+\def\Xchap#1#2#3{\ischaptrue\addto\toclist{\tocline{0}{\bf}{#1}{#2}{#3}}}
+\def\Xsec#1#2#3{\addto\toclist{\tocline{1}{\rm}{#1}{#2}{#3}}}
+\def\Xsecc#1#2#3{\addto\toclist{\tocline{2}{\rm}{#1}{#2}{#3}}}
+
+\def\tocline#1#2#3#4#5{{\leftskip=#1\iindent \rightskip=2\iindent
+ \ifischap\advance\leftskip by\iindent\fi
+ \ifnum#1>1 \advance\leftskip by\iindent\fi
+ \noindent\llap{#2\toclink{#3}\enspace}%
+ {#2#4\unskip}\tocdotfill\pglink{#5}\hskip-2\iindent\null\par}}
+\def\tocdotfill{\leaders\hbox to.8em{\hss.\hss}\hfill}
+
+\def\maketoc{\par \ifx\toclist\empty
+ \opwarning{\noexpand\maketoc -- data unavailable, TeX me again}\openref
+ \else \toclist \fi}
+
+
+%%%%%%%%%%%%%% Index -- sec. 3.12 on opmac-d.pdf
+
+\def\iindex#1{\openref\wref\Xindex{{#1}{\the\pageno}}}
+
+\def\ii #1 {\leavevmode\def\tmp{#1}\iiA #1,,}
+
+\def\iiA #1,{\if$#1$\else\def\tmpa{#1}%
+ \ifx\tmpa\iiatsign \expandafter\iiB\tmp,,%
+ \else\iindex{#1}\fi
+ \expandafter\iiA\fi}
+\def\iiatsign{@}
+
+\def\iiB #1,{\if$#1$\else
+ \iiC#1/\relax
+ \expandafter\iiB\fi
+}
+\def\iiC #1/#2\relax{\if$#2$\else\iindex{#2#1}\fi}
+
+\def\iid #1 {\leavevmode\iindex{#1}#1\futurelet\tmp\iiD}
+\def\iiD{\ifx\tmp,\else\ifx\tmp.\else\space\fi\fi}
+
+\def\Xindex#1#2{\bgroup \def~{ }%
+ \isdefined{,#1}\iftrue
+ \expandafter\firstdata \csname,#1\endcsname \XindexA
+ \ifnum#2=\tmpa % \ii on the same page
+ \else
+ \tmpnum=#2 \advance\tmpnum by-1
+ \expandafter\seconddata \csname,#1\endcsname \XindexB
+ \if\tmpb+% state: the pagelist ends by a pagenumber
+ \ifnum\tmpnum=\tmpa % the consecutive page
+ \sxdef{,#1}{{#2/-}{\tmp\iiendash}}
+ \else % the pages drop
+ \sxdef{,#1}{{#2/+}{\tmp, #2}}
+ \fi
+ \else % state: the pagelist ends by --
+ \ifnum\tmpnum=\tmpa % the consecutive page
+ \sxdef{,#1}{{#2/-}{\tmp}}
+ \else % the pages drop
+ \sxdef{,#1}{{#2/+}{\tmp\tmpa, #2}}
+ \fi
+ \fi
+ \fi
+ \else % first occurrence of the index item #1
+ \sxdef{,#1}{{#2/+}{#2}}
+ \global \expandafter\addto \expandafter\iilist \csname,#1\endcsname
+ \fi
+ \egroup
+}
+\def\iilist{} \def\iiendash{--}
+
+\def\firstdata#1#2{\expandafter\expandafter\expandafter #2\expandafter\firstdataA#1}
+\def\firstdataA#1#2{#1&}
+\def\seconddata#1#2{\expandafter\expandafter\expandafter #2\expandafter\seconddataA#1}
+\def\seconddataA#1#2{#2&}
+
+\def\XindexA#1/#2&{\def\tmpa{#1}\let\tmpb=#2}
+\def\XindexB#1&{\def\tmp{#1}}
+
+\def\makeindex{\par
+ \ifx\iilist\empty \opwarning{index data-buffer is empty. TeX me again}
+ \else
+ \bgroup
+ \setprimarysorting
+ \def\act##1{\ifx##1\relax \else
+ \firstdata##1\XindexA \seconddata##1\XindexB
+ \if\tmpb+%
+ \preparesorting##1% converted item by sorting data in \tmpb
+ \xdef##1{{\tmpb}{\tmp}}
+ \else
+ \preparesorting##1% converted item by sorting data in \tmpb
+ \xdef##1{{\tmpb}{\tmp\tmpa}}
+ \fi
+ \expandafter\act\fi}
+ \expandafter \act \iilist \relax
+ \egroup
+ \dosorting % sorting is in progress
+ \iiparparams
+ \gdef\act##1{\ifx##1\relax \else \prepii##1%
+ \seconddata##1\printiipages \expandafter\act \fi}
+ \expandafter \act \iilist \relax
+ \orippx \global\let\act=\undefined \global\let\orippx=\undefined
+ \fi
+}
+\def\printiipages#1&{#1\par}
+
+\def\prepii #1{\isinlist \iispeclist #1\iftrue
+ \expandafter\expandafter\expandafter \printii \csname\string#1\endcsname&
+ \else \expandafter\prepiiA\string #1&
+ \fi
+}
+\def\prepiiA #1#2#3&{\printii#3&}
+
+\def\iis #1 #2{\bgroup \def~{ }%
+ \global\expandafter\addto\expandafter\iispeclist\csname,#1\endcsname
+ \global\sdef{\expandafter\string\csname,#1\endcsname}{#2}%
+ \egroup
+}
+\def\iispeclist{}
+
+\def\printii #1&{\gdef\currii{#1}\noindent\everyii
+ \hskip-\iindent \ignorespaces\printiiA#1//}
+\def\printiiA #1/{\if$#1$\expandafter\printiiB\else
+ \expandafter\scanprevii\previi/&\gdef\tmpb{#1}%
+ \ifx\tmpa\tmpb \iiemdash \else#1 \gdef\previi{}\fi
+ \expandafter\printiiA\fi
+}
+\def\printiiB{\let\previi=\currii}
+\def\iiemdash{\kern.1em---\space}
+\def\everyii{}
+
+\def\iiparparams{%
+ \xdef\orippx{\global\rightskip=\the\rightskip
+ \global\leftskip=\the\leftskip
+ \global\exhyphenpenalty=\the\exhyphenpenalty}
+ \global\rightskip=0pt plus1fil
+ \global\exhyphenpenalty=10000
+ \global\leftskip=\iindent
+}
+
+\def\scanprevii#1/#2&{\def\previi{#2}\def\tmpa{#1}}
+\def\previi{} % previous index item
+
+
+%%%%%%%%%%%%%% Sorting -- sec. 3.13 in opmac-d.pdf
+
+\def\sortingdata{%
+ /,{ },-,&,@,%
+ aA\"a\"A\'a\'A,%
+ bB,%
+ cC,%
+ \v c\v C,%
+ dD\v d\v D,%
+ eE\'e\'E\v e\v E,%
+ fF,%
+ gG,%
+ h^^HH,%
+ ^^T^^U^^V,%
+ iI\'i\'I,%
+ jJ,%
+ kK,%
+ lL\'l\'L\v l\v L,%
+ mM,%
+ nN\v n\v N,%
+ oO\"o\"O\'o\'O\^o\^O,%
+ pP,%
+ qQ,%
+ rR\'r\'R,%
+ \v r\v R,%
+ sS,%
+ \v s\v S,%
+ tT\v t\v T,%
+ uU\"u\"U\'u\'U\r u\r U,%
+ vV,%
+ wW,%
+ xX,%
+ yY,\'y\'Y,%
+ zZ,%
+ \v z\v Z,%
+ 0,1,2,3,4,5,6,7,8,9,'.%
+}
+\def\setprimarysorting {\csname sort:\csname lan:\the\language\endcsname \endcsname
+ \def\act##1{\ifx##1.\else
+ \ifx##1,\advance\tmpnum by1
+ \else \lccode`##1=\tmpnum \fi
+ \expandafter \act \fi}%
+ \ifx\r\undefined
+ \opwarning{\noexpand\csaccents is unused, falling back to ASCII sorting}%
+ \gdef\sortingdata{.}\global\let\chsorting=n%
+ \else
+ \xdef\sortingdata{\sortingdata}% expand sorting data now
+ \fi
+ \tmpnum=133 \expandafter \act\sortingdata \setignoredchars
+}
+\sdef{sort:en}{\global\let\chsorting=n} % skipping ch processing in English language
+
+\def\setsecondarysorting {\def\act##1{\ifx##1.\else
+ \ifx##1,\else \advance\tmpnum by1 \lccode`##1=\tmpnum \fi
+ \expandafter \act \fi}%
+ \tmpnum=133 \expandafter \act\sortingdata \setignoredchars
+}
+\bgroup
+\lccode`4=`c \lccode`5=`h \lccode`6=`C \lccode`7=`H
+\lowercase{
+\gdef\iiscanch #145#2\relax{#1\if$#2$\else^^T\iiscanch #2\relax\fi}
+\gdef\iiscanCh #165#2\relax{#1\if$#2$\else^^U\iiscanCh #2\relax\fi}
+\gdef\iiscanCH #167#2\relax{#1\if$#2$\else^^V\iiscanCH #2\relax\fi}
+\gdef\preparesorting#1{\expandafter\preparesortingA\string#1&}
+\gdef\preparesortingA#1#2#3&{\xdef\tmpb{#3}%
+ \ifx\chsorting\undefined
+ \xdef\tmpb{\expandafter\iiscanch\tmpb 45\relax}%
+ \xdef\tmpb{\expandafter\iiscanCh\tmpb 65\relax}%
+ \xdef\tmpb{\expandafter\iiscanCH\tmpb 67\relax}\fi
+ \lowercase\expandafter{\expandafter\gdef\expandafter\tmpb\expandafter{\tmpb}}%
+ \xdef\tmpb{\expandafter\removedot\tmpb.\relax}%
+}}
+\egroup
+
+\def\removedot #1.#2\relax{#1\if$#2$\else\removedot #2\relax\fi}
+\def\setignoredchars{\setlccodes ,.;.?.!.:.'.".|.(.).[.].<.>.=.+.{}{}}
+
+\newif \ifAleB
+
+\def\isAleB #1#2{%
+ \edef\tmp{\firstdata#1\empty\relax\firstdata#2\empty\relax%
+ \noexpand#1\noexpand#2}%
+ \expandafter \testAleB \tmp
+}
+\def\testAleB #1#2\relax #3#4\relax #5#6{%
+ \if #1#3\if #1&\testAleBsecondary #5#6%
+ \else \testAleB #2\relax #4\relax #5#6%
+ \fi
+ \else \ifnum `#1<`#3 \AleBtrue \else \AleBfalse \fi
+ \fi
+}
+\def\testAleBsecondary#1#2{%
+ \bgroup
+ \setsecondarysorting
+ \preparesorting#1\let\tmpa=\tmpb \preparesorting#2%
+ \edef\tmp{\tmpa0\relax\tmpb1\relax}%
+ \expandafter\testAleBsecondaryX \tmp
+ \egroup
+}
+\def\testAleBsecondaryX #1#2\relax #3#4\relax {%
+ \if #1#3\testAleBsecondaryX #2\relax #4\relax
+ \else \ifnum `#1<`#3 \global\AleBtrue \else \global \AleBfalse \fi
+ \fi
+}
+\def\dosorting{%
+ \message{Opmac: Sorting index...}
+ \def\act##1{\ifx##1\relax\else \global\addto\iilist{##1,}%
+ \expandafter\act\fi}
+ \expandafter\removeiilist \expandafter\act \iilist\relax
+ \expandafter\removeiilist \expandafter\mergesort \iilist \end,\end
+}
+\def\removeiilist{\gdef\iilist{}}
+
+\def\mergesort #1#2,#3{% by Miroslav Olsak
+ \ifx,#1 % prazdna-skupina,neco, (#2=neco #3=pokracovani)
+ \addto\iilist{#2,} % dvojice skupin vyresena
+ \return{\fif\mergesort#3}% % \mergesort pokracovani
+ \fi
+ \ifx,#3 % neco,prazna-skupina, (#1#2=neco #3=,)
+ \addto\iilist{#1#2,}% % dvojice skupin vyresena
+ \return{\fif\mergesort}% % \mergesort dalsi
+ \fi
+ \ifx\end#3 % neco,konec (#1#2=neco)
+ \ifx\empty\iilist % neco=kompletni setrideny seznam
+ \def\iilist{#1#2}%
+ \return{\fif\fif\gobbletoend}% % koncim
+ \else % neco=posledni skupina nebo \end
+ \return{\fif\fif \expandafter\removeiilist % spojim \indexbuffer+necoa cele znova
+ \expandafter\mergesort\iilist#1#2,#3}%
+ \fi\fi % zatriduji: p1+neco1,p2+neco2, (#1#2=p1+neco1 #3=p2)
+ \isAleB #1#3\ifAleB % p1<p2
+ \addto\iilist{#1}% % p1 do bufferu
+ \return{\fif\mergesort#2,#3}% % \mergesort neco1,p2+neco2,
+ \else % p1>p2
+ \addto\iilist{#3}% % p2 do bufferu
+ \return{\fif\mergesort#1#2,}% % \mergesort p1+neco1,neco2,
+ \fi
+ \relax % zarazka, na ktere se zastavi \return
+}
+\def\return#1#2\fi\relax{#1} \def\fif{\fi}
+\def\gobbletoend #1\end{}
+
+
+%%%%%%%%%%%%%% \begmulti ... \endmulti TBN p. 244, 245 -- sec. 3.14 in opmac-d.pdf
+
+\def\corrsize #1{%% #1 := #1 + \splittopskip - \topskip
+ \advance #1 by \splittopskip \advance #1 by-\topskip}
+
+\def\begmulti #1 {\par\wipeepar\multiskip\penalty0 \def\Ncols{#1}
+ \splittopskip=\baselineskip
+ \setbox6=\vbox\bgroup\penalty0
+ %% \hsize := Sirka sloupce = (\hsize+\colsep) / n - \colsep
+ \advance\hsize by\colsep
+ \divide\hsize by\Ncols \advance\hsize by-\colsep
+ \dimen0=0pt
+ \def\par{\endgraf\advance\dimen0 by\the\prevgraf\baselineskip
+ \ifdim\dimen0>.9\maxdimen \message{flushcolumns:}%
+ \global\let\balancecolumns=\flushcolumns \expandafter \endmulti
+ \fi}%
+}
+\def\endmulti{\vskip-\prevdepth\vfil\egroup \setbox1=\vsplit6 to0pt
+ %% \dimen1 := the free space on the page
+ \ifdim\pagegoal=\maxdimen \dimen1=\vsize \corrsize{\dimen1}
+ \else \dimen1=\pagegoal \advance\dimen1 by-\pagetotal \fi
+ \ifdim \dimen1<2\baselineskip
+ \vfil\break \dimen1=\vsize \corrsize{\dimen1} \fi
+ \dimen0=\ht6 \divide\dimen0 by\Ncols \relax
+ %% split the material to more pages?
+ \ifdim \dimen0>\dimen1 \splitpart
+ \else \balancecolumns \fi % only balancing
+ \multiskip\relax}
+\def\makecolumns{\bgroup % full page, destination height: \dimen1
+ \vbadness=20000 \setbox1=\hbox{}\tmpnum=0
+ \loop \ifnum\Ncols>\tmpnum
+ \advance\tmpnum by1
+ \setbox1=\hbox{\unhbox1 \vsplit6 to\dimen1 \hss}
+ \repeat
+ \hbox{}\nobreak\vskip-\splittopskip \nointerlineskip
+ \line{\unhbox1\unskip}
+ \egroup}
+\def\splitpart{%
+ \makecolumns % full page
+ \vskip 0pt plus 1fil minus\baselineskip \break
+ \dimen0=\ht6 \divide\dimen0 by\Ncols \relax
+ \dimen1=\vsize \corrsize{\dimen1}\dimen2=\dimen1
+ \advance\dimen2 by-\Ncols\baselineskip
+ %% split the material to more pages?
+ \ifvoid6 \else
+ \ifdim \dimen0>\dimen2 \expandafter\expandafter\expandafter \splitpart
+ \else \balancecolumns % last balancing
+ \fi \fi
+}
+
+\def\balancecolumns{\bgroup \setbox7=\copy6 % destination height: \dimen0
+ \ifdim\dimen0>\baselineskip \else \dimen0=\baselineskip \fi
+ \vbadness=20000
+ \def\tmp{%
+ \setbox1=\hbox{}\tmpnum=0
+ \loop \ifnum\Ncols>\tmpnum
+ \advance\tmpnum by1
+ \setbox1=\hbox{\unhbox1
+ \ifvoid6 \hbox to\wd6{\hss}\else \vsplit6 to\dimen0 \fi\hss}
+ \repeat
+ \ifvoid6 \else
+ \advance \dimen0 by.2\baselineskip
+ \setbox6=\copy7
+ \expandafter \tmp \fi}\tmp
+ \hbox{}\nobreak\vskip-\splittopskip \nointerlineskip
+ \hbox to\hsize{\unhbox1\unskip}%
+ \egroup
+}
+\def\flushcolumns#1\relax{\fi\fi\fi
+ \setbox6=\vbox\bgroup\penalty0
+ \global\let\balancecolumns=\ibalancecolumns
+ \dimen0=\ht6 \unvbox6 \unskip\unskip
+ \advance\hsize by\colsep
+ \divide\hsize by\Ncols \advance\hsize by-\colsep
+ \def\par{\endgraf\advance\dimen0 by\the\prevgraf\baselineskip
+ \ifdim\dimen0>.9\maxdimen \message{flush-columns:}%
+ \global\let\balancecolumns=\flushcolumns \expandafter \endmulti
+ \fi}%
+}
+\let\ibalancecolumns=\balancecolumns
+
+%%%%%%%%%%%%%% Colors -- sec. 3.15 in opmac-d.pdf
+
+\newif\ifpgcolor \pgcolorfalse
+\newcount\lastpage \lastpage=0 % the last page of the document
+
+\def\Blue{\setcmykcolor{1.0 1.0 0.0 0}}
+\def\Red{\setcmykcolor{0.0 1.0 1.0 0}}
+\def\Brown{\setcmykcolor{0 0.67 0.67 0.5}}
+\def\Green{\setcmykcolor{1.0 0.0 1.0 0.0}}
+\def\Yellow{\setcmykcolor{0.0 0.0 1 0}}
+\def\Cyan{\setcmykcolor{1.0 0.0 0 0}}
+\def\Magenta{\setcmykcolor{0.0 1.0 0 0}}
+\def\White{\setcmykcolor{0 0 0 0}}
+\def\Grey{\setcmykcolor{0 0 0 0.5}}
+\def\LightGrey{\setcmykcolor{0 0 0 0.2}}
+\def\Black{\setcmykcolor{0 0 0 1}\global\pgcolorfalse}
+
+\ifpdftex
+ \def\setcmykcolor#1{\special{PDF:#1 \pdfK}%
+ \ifpgcolor\else
+ \openref\expandafter\wref\expandafter\Xpdfcolor\expandafter{\pdfK{#1}}%
+ \fi
+ }
+\else
+ \def\setcmykcolor#1{}
+\fi
+
+\def\linecolor#1{{\def\pdfK{K}#1}}
+\def\pdfK{k}
+\def\locpgcolor{\global\pgcolortrue}
+
+\def\Xpdfcolork#1{\def\pdflastcolork{#1}}
+\def\XpdfcolorK#1{\def\pdflastcolorK{#1}}
+\def\pdfblackcolor{0 0 0 1}
+\let\pdflastcolork=\pdfblackcolor \let\pdflastcolorK=\pdfblackcolor
+
+\def\Xpage#1{\lastpage=#1 \fnotenumlocal=0
+ \ifx\pdflastcolork\pdfblackcolor\else
+ \isdefined{pg:#1}\iftrue \else \sxdef{pg:#1}{}\fi
+ {\let\setpgcolor=\relax \sxdef{pg:#1}%
+ {\csname pg:#1\endcsname\setpgcolor k{\pdflastcolork}}}\fi
+ \ifx\pdflastcolorK\pdfblackcolor\else
+ \isdefined{pg:#1}\iftrue \else \sxdef{pg:#1}{}\fi
+ {\let\setpgcolor=\relax \sxdef{pg:#1}%
+ {\csname pg:#1\endcsname\setpgcolor K{\pdflastcolorK}}}\fi
+}
+\def\setpgcolor#1#2{\special{PDF:#2 #1}}
+
+\def\draft{\edef\tmp{\headline={\noexpand\draftbox{\tenbf DRAFT}\the\headline}}
+ \ifpdftex \tmp \else
+ \opwarning{\string\draft: Grey color is possible in pdfTeX only}\fi}
+
+\def\draftbox#1{\vbox to0pt{\setbox0=\hbox{\typosize[10/]#1}%
+ \kern.5\vsize \kern4\wd0 \hbox to0pt{\kern.5\hsize \kern-2.5\wd0
+ \pdfsave \pdfrotate{55}\pdfscale{10}{10}%
+ \hbox to0pt{\locpgcolor\LightGrey \box0\hss\Black}%
+ \pdfrestore
+\hss}\vss}\hss}
+
+
+%%%%%%%%%%%%%% Hyperrefs -- sec. 3.16 in opmac-d.pdf
+
+\def\destactive[#1:#2]#3{\if$#2$\else\ifvmode
+ \tmpdim=\prevdepth \prevdepth=-1000pt
+ \destbox[#1:#2]{#3}\prevdepth=\tmpdim
+ \else \destbox[#1:#2]{#3}%
+ \fi\fi
+}
+\def\destbox[#1]#2{\vbox to0pt{\kern-#2 \pdfdest name{#1} xyz\vss}}
+\def\dest[#1]#2{}
+
+\def\link[#1:#2]#3#4{\leavevmode\pdfstartlink height.9em depth.3em
+ \pdfborder{#1} goto name{#1:#2}\relax
+ \ifx\Black#3#4\else#3#4\Black\fi \pdfendlink
+}
+\def\urllink[#1:#2]#3{{\leavevmode\pdfstartlink height.9em depth.3em
+ \pdfborder{#1}user{/Subtype/Link/A << /Type/Action/S/URI/URI(#2)>>}\relax
+ \urlcolor{#3}\Black\pdfendlink}%
+}
+\def\url{\leavevmode\bgroup \adef{/}{\\}%
+ \catcode`\_=12 \catcode`\#=12 \catcode`\~=12 \dourl}
+\def\dourl#1{\def\\{/}\ulink[url:#1]{\tt\def\\{\discretionary{/}{}{/}}#1}\egroup}
+
+\def\toclink#1{#1}
+\def\pglink#1{#1}
+\def\citelink#1{#1}
+\def\reflink[#1]#2{#2}
+\def\ulink[#1]#2{#2}
+
+\def\hyperlinks#1#2{%
+ \let\dest=\destactive
+ \def\toclink##1{\locpgcolor\link[toc:##1]{#1}{##1}}%
+ \def\pglink##1{\locpgcolor\link[pg:##1]{#1}{##1}}%
+ \def\citelink##1{\locpgcolor\link[cite:##1]{#1}{##1}}%
+ \def\reflink[##1]##2{\locpgcolor\link[ref:##1]{#1}{##2}}%
+ \def\ulink[##1]##2{\urllink[##1]{##2}}%
+ \def\urlcolor{#2}%
+}
+
+\def\pdfborder#1{\if$#1$\else \isdefined{#1border}\iftrue
+ \if$\csname#1border\endcsname$\else
+ attr{/C[\csname#1border\endcsname] /Border[0 0 1]}%
+ \fi\fi\fi
+}
+
+\ifpdftex \else
+ \def\dest[#1]#2{}
+ \def\link[#1]#2#3{#3}
+ \def\urllink[#1]#2{#2}
+ \def\hyperlinks#1#2{}
+\fi
+
+
+%%%%%%%%%%%%%% Outlines -- sec. 3.17 in opmac-d.pdf
+
+\def\outlines#1{\openref\ifx\toclist\empty
+ \opwarning{\noexpand\outlines -- data unavailable. TeX me again}%
+ \else
+ {\let\tocline=\outlinesA
+ \count0=0 \count1=0 \toclist % calculate numbers o childs
+ \def\outlinelevel{#1}\let\tocline=\outlinesB
+ \count0=0 \count1=0 \toclist}% create outlines
+ \fi
+}
+\def\outlinesA#1#2#3#4#5{%
+ \advance\count#1 by1
+ \ifcase#1\or
+ \addoneol{ol:\the\count0}\or
+ \addoneol{ol:\the\count0:\the\count1}\fi
+}
+\def\addoneol#1{\isdefined{#1}%
+ \iftrue \tmpnum=\csname#1\endcsname\relax
+ \advance\tmpnum by1 \sxdef{#1}{\the\tmpnum}%
+ \else \sxdef{#1}{1}%
+ \fi
+}
+\def\outlinesB#1#2#3#4#5{%
+ \advance\count#1 by1
+ \ifcase#1\tmpnum=\isdefined{ol:\the\count0}%
+ \iftrue\csname ol:\the\count0\endcsname\else0\fi \or
+ \tmpnum=\isdefined{ol:\the\count0:\the\count1}%
+ \iftrue\csname ol:\the\count0:\the\count1\endcsname\else0\fi \or
+ \tmpnum = 0 \fi
+ \protectlist \def~{ }\setcnvcodesA
+ \expandafter \setlccodes \toasciidata{}{}%
+ \cnvhook \lowercase{\gdef\tmp{#4}}%
+ \pdfoutline goto name{toc:#3} count
+ \ifnum#1<\outlinelevel\space\else-\fi\tmpnum {\tmp}\relax
+}
+\def\setcnvcodesA{\global\let\setcnvcodesA=\relax % I am working only once
+ \ifx\r\undefined
+ \gdef\toasciidata{}
+ \opwarning{\noexpand\csaccents unused, CZ/SK outline-conversion is off}%
+ \else
+ \xdef\toasciidata{\toasciidata}%
+ \fi
+}
+\def\toasciidata{% Removes Czech+Slovak accents
+ AA\'AA\"AA\'aa\" aaBBCC\v CC\v ccDD\v DD\v ddEE\'EE\v EE\'ee\v ee%
+ FFGGHHII\'II\'iiJJKKLL\'LL\v LL\'ll\v llMMNN\v NN\v nnOO\'OO\"OO\^OO%
+ \'oo\"oo\^ooPPQQRR\v RR\v rrSS\v SS\v ssTT\v TT\v ttUU\'UU\"UU\r UU%
+ \'uu\"uu\r uuVVWWXXYY\'YY\'yyZZ\v ZZ\v zz%
+}
+\def\setlccodes#1#2{\if\relax#2\relax \else \lccode`#1=`#2 \expandafter \setlccodes \fi}
+
+\def\insertoutline#1{\pdfdest name{oul:#1} xyz\relax
+ \pdfoutline goto name{oul:#1} count0 {#1}\relax
+}
+
+\ifpdftex \else
+ \def\outlines#1{\opwarning{DVI output has no outlines}\gdef\outlines##1{}}
+ \let\insertoutline=\outlines
+\fi
+
+
+%%%%%%%%%%%%%% Verbatim, \begtt, \endtt -- sec. 3.18 in opmac-d.pdf
+
+\newcount\ttline \ttline=-1
+\newcount\viline
+\newread\vifile
+
+\def\setverb{\def\do##1{\catcode`##1=12}\dospecials \catcode`\*=12 }
+\def\begtt{\ttskip\bgroup \wipeepar
+ \setverb \adef{ }{ }%
+ \ifx\savedttchar\undefined \else \catcode\savedttchar=12 \fi
+ \parindent=\ttindent
+ \tthook\relax
+ \ifnum\ttline<0 \else
+ \tenrm \thefontscale[700]\let\sevenrm=\thefont
+ \everypar={\global\advance\ttline by1
+ \llap{\sevenrm\the\ttline\kern.9em}}\fi
+ \def\par##1{\endgraf\ifx##1\egroup\else\penalty\ttpenalty\leavevmode\fi ##1}
+ \obeylines \startverb}
+{\catcode`\|=0 \catcode`\\=12
+|gdef|startverb#1\endtt{|tt#1|egroup|ttskip|testparA}}
+\def\testparA{\afterassignment\testparB\let\tmpa= }
+\def\testparB{\futurelet\tmpa\testparC}
+\def\testparC{\ifx\tmpa\par\else\afternoindent\fi}
+
+\def\activettchar#1{%
+ \ifx\savedttchar\undefined\else \catcode\savedttchar=\savedttcharc \fi
+ \chardef\savedttchar=`#1%
+ \chardef\savedttcharc=\catcode`#1%
+ \lccode`\~=`#1
+ \lowercase {\def~}{\leavevmode\hbox\bgroup\setverb\adef{ }{ }%
+ \intthook\tt\readverb}%
+ \lowercase{\def\readverb ##1~}{##1\egroup}%
+ \lccode`\~=0 \catcode\savedttchar=13
+}
+
+\def\verbinput (#1) #2 {\par \def\tmpa{#2}%
+ \ifx\vifilename\tmpa \else
+ \openin\vifile=#2
+ \global\viline=0 \global\let\vifilename=\tmpa
+ \ifeof\vifile
+ \opwarning{\noexpand\verbinput - file "#2" is unable to reading}
+ \expandafter\expandafter\expandafter\skiptorelax
+ \fi
+ \fi
+ \viscanparameter #1+\relax
+}
+\def\skiptorelax#1\relax{}
+
+\def \viscanparameter #1+#2\relax{%
+ \if$#2$\viscanminus(#1)\else \viscanplus(#1+#2)\fi
+}
+\def\viscanplus(#1+#2+){%
+ \if$#1$\tmpnum=\viline
+ \else \ifnum#1<0 \tmpnum=\viline \advance\tmpnum by-#1
+ \else \tmpnum=#1
+ \advance\tmpnum by-1
+ \ifnum\tmpnum<0 \tmpnum=0 \fi % (0+13) = (1+13)
+ \fi \fi
+ \edef\vinolines{\the\tmpnum}%
+ \if$#2$\def\vidolines{0}\else\edef\vidolines{#2}\fi
+ \doverbinput
+}
+\def\viscanminus(#1-#2){%
+ \if$#1$\tmpnum=0
+ \else \tmpnum=#1 \advance\tmpnum by-1 \fi
+ \ifnum\tmpnum<0 \tmpnum=0 \fi % (0-13) = (1-13)
+ \edef\vinolines{\the\tmpnum}%
+ \if$#2$\tmpnum=0
+ \else \tmpnum=#2 \advance\tmpnum by-\vinolines \fi
+ \edef\vidolines{\the\tmpnum}%
+ \doverbinput
+}
+\def\doverbinput{%
+ \tmpnum=\vinolines
+ \advance\tmpnum by-\viline
+ \ifnum\tmpnum<0
+ \openin\vifile=\vifilename\space
+ \global\viline=0
+ \else
+ \edef\vinolines{\the\tmpnum}%
+ \fi
+ \ttskip\bgroup \wipeepar
+ \setverb \adef{ }{ }%
+ \ifx\savedttchar\undefined \else \catcode\savedttchar=12 \fi
+ \parindent=\ttindent
+ \tthook\relax
+ \ifnum\ttline<-1 \else
+ \tenrm \thefontscale[700]\let\sevenrm=\thefont \fi
+ \tmpnum=0 \tt
+ \loop \ifeof\vifile \tmpnum=\vinolines\space \fi
+ \ifnum\tmpnum<\vinolines\space
+ \vireadline \advance\tmpnum by1 \repeat %% skip line
+ \tmpnum=0 \ifnum\vidolines=0 \tmpnum=-1 \fi
+ \loop \ifeof\vifile \tmpnum=\vidolines\space \fi
+ \ifnum\tmpnum<\vidolines\space
+ \vireadline \penalty\ttpenalty \viprintline %% print line
+ \ifnum\vidolines=0 \else\advance\tmpnum by1 \fi \repeat
+ \egroup\ttskip\testparB
+}
+\def\vireadline{\read\vifile to \tmp \global\advance\viline by1 }
+\def\viprintline{\indent
+ \ifnum \ttline<-1 \else
+ \llap{\sevenrm\ifnum\ttline<0 \the\viline \else
+ \global\advance\ttline by1 \the\ttline \fi \kern.9em}%
+ \fi
+ \tmp\par % print the line from \tmp
+}
+
+
+%%%%%%%%%%%%%% \table -- sec. 3.19 in opmac-d.pdf
+
+\newtoks\tabdata
+\def\tabstrutA{\tabstrut}
+\newcount\colnum \colnum=0
+\def\ddlinedata{}
+\def\vvleft{}
+
+\def\table#1#2{\vbox{\offinterlineskip
+ \def\tmpa{}\scantabdata#1\relax
+ \halign\expandafter{\the\tabdata\tabstrutA\cr#2\crcr}}}
+
+\def\scantabdata#1{%
+ \ifx#1\relax\let\scantabdata=\relax
+ \else\if#1|\addtabvrule
+ \else\expandafter\ifx\csname tabdeclare#1\endcsname \relax
+ \opwarning{tab-declare letter #1 unknown, ignored}%
+ \else\expandafter \addtabitem\expandafter{\csname tabdeclare#1\endcsname}%
+ \fi\fi\fi \scantabdata
+}
+\def\tabdeclarec{\tabiteml\hfil##\unsskip\hfil\tabitemr}
+\def\tabdeclarel{\tabiteml##\unsskip\hfil\tabitemr}
+\def\tabdeclarer{\tabiteml\hfil##\unsskip\tabitemr}
+
+\def\unsskip{\ifdim\lastskip>0pt \unskip\fi}
+\def\addtabitem#1{\ifnum\colnum>0 \addtabdata{&}\addto\ddlinedata{&\dditem}\fi
+ \advance\colnum by1 \let\tmpa=\relax \expandafter\addtabdata\expandafter{#1}}
+\def\addtabdata#1{\expandafter\tabdata\expandafter{\the\tabdata#1}}
+\def\addtabvrule{\ifx\tmpa\vrule \addtabdata{\kern\vvkern}%
+ \ifnum\colnum=0\def\vvleft{\vvitem}\else\addto\ddlinedata{\vvitem}\fi\fi
+ \let\tmpa=\vrule \addtabdata{\vrule}}
+
+\def\crl{\cr\noalign{\hrule}}
+\def\crll{\cr\noalign{\hrule\kern\hhkern\hrule}}
+
+\def\crli{\cr \omit \gdef\dditem{\omit\tablinefil}\gdef\vvitem{\tabvvline}%
+ \vvleft\tablinefil\ddlinedata\cr}
+\def\crlli{\crli\noalign{\kern\hhkern}\crli}
+\def\tablinefil{\leaders\hrule\hfil}
+\def\tabvvline{\vrule\kern\vvkern\vrule}
+
+\def\tskip{\afterassignment\tskipA \tmpdim}
+\def\tskipA{\gdef\dditem{}\gdef\vvitem{}\gdef\tabstrutA{}%
+ \vrule height\tmpdim width0pt \ddlinedata\cr
+ \gdef\tabstrutA{\tabstrut}}
+
+\let\orihrule=\hrule \let\orivrule=\vrule
+\def\rulewidth{\afterassignment\rulewidthA \tmpdim}
+\def\rulewidthA{\edef\hrule{\orihrule height\the\tmpdim}%
+ \edef\vrule{\orivrule width\the\tmpdim}}
+
+\def\frame#1{\setbox0=\hbox{#1}\setbox1=\vbox{\hrule}%
+ \tmpdim=\dp0 \advance\tmpdim by\ht1 \advance\tmpdim by\hhkern
+ \vbox{\hrule\hbox{\vrule\kern\vvkern
+ \vbox{\kern\hhkern\box0\kern\hhkern}\kern\vvkern\vrule}%
+ \hrule\kern-\tmpdim\hbox{\vrule depth\tmpdim width0pt}}}
+
+
+%%%%%%%%%%%%%% \inspic -- sec. 3.20 in opmac-d.pdf
+
+\newdimen\picw \picw=0pt
+
+\ifpdftex
+ \def\inspic #1 {\ifdim\picw=0pt
+ \opwarning{\noexpand\inspic -- the width \noexpand\picw is not set}%
+ \else
+ \hbox{\pdfximage width\picw {\picdir#1}\pdfrefximage\pdflastximage}%
+ \fi
+ }
+\else
+ \def\inspic #1 {\opwarning
+ {The \noexpand\inspic is supported for PDF output only}}
+\fi
+
+%%%%%%%%%%%%%%% transformation matrix -- sec. 3.21 in opmac-d.pdf
+
+\def\pdfscale#1#2{\pdfsetmatrix{#1 0 0 #2}}
+
+\def\pdfrotate#1{\tmpdim=#1pt
+ \ifdim\tmpdim=0pt
+ \else \ifdim\tmpdim=90pt \pdfsetmatrix{0 1 -1 0}%
+ \else \edef\tmp{#1}\expandafter\pdfrotateA\tmp..\relax
+ \fi \fi
+}
+\def\pdfrotateA #1.#2.#3\relax{%
+ \def\tmp##1.##2\relax {##1}%
+ \tmpnum=\expandafter \tmp \the\tmpdim \relax % round
+ \ifdim\tmpdim>0pt \def\tmpa{}\else\def\tmpa{-}\fi % save -
+ \loop \ifnum\tmpnum<0 \advance\tmpnum by360 \repeat
+ \loop \ifnum\tmpnum>360 \advance\tmpnum by-360 \repeat
+ \loop \ifnum\tmpnum>90 \pdfrotate{90}\advance\tmpnum by-90 \repeat
+ \ifnum\tmpnum=90 \pdfrotate{90}\else
+ \ifnum\tmpnum>44 \pdfsetmatrix{.7071 .7071 -.7071 .7071}%
+ \advance\tmpnum by-45 \fi
+ \ifnum\tmpnum>22 \pdfsetmatrix{.9272 .3746 -.3746 .9272}%
+ \advance\tmpnum by-22 \fi
+ \ifnum\tmpnum>0
+ \pdfsetmatrix{\smallcos \smallsin -\smallsin \smallcos}%
+ \fi\fi
+ \if$#2$\else % fraction part
+ \tmpdim=.01745329pt % \pi/180
+ \tmpdim=.#2\tmpdim %
+ \edef\tmp{\expandafter\ignorept\the\tmpdim\space}%
+ \ifx\tmpa\empty \pdfsetmatrix{1 \tmp -\tmp 1}%
+ \else \pdfsetmatrix{1 -\tmp \tmp 1}%
+ \fi\fi
+}
+\def\smallcos{.\ifcase\tmpnum \or9998\or9994\or9986\or9976\or9962\or9945\or
+ 9925\or9903\or9877\or9848\or9816\or9781\or9744\or9703\or9659\or9613\or
+ 9563\or9511\or9455\or9397\or9336\or9272\fi\space}
+\def\smallsin{.\ifcase\tmpnum 0\or0175\or0359\or0523\or0698\or0872\or1045\or
+ 1219\or1391\or1564\or1736\or1908\or2079\or2250\or2419\or2588\or2756\or
+ 2924\or309\or3256\or342\or3584\or3746\fi\space}
+
+\ifpdftex \else
+ \def\pdfsetmatrix#1{} \def\pdfsave{} \def\pdfrestore{}
+\fi
+
+
+%%%%%%%%%%%%%% \fnote, \mnote -- sec 3.22 in opmac-d.pdf
+
+\newcount\fnotenum \fnotenum=0
+\newcount\fnotenumlocal
+
+\def\fnote#1{\global\advance \fnotenum by1
+ \leavevmode\openref\wref\Xfnote{}%
+ \isdefined{fn:\the\fnotenum}\iftrue
+ \else\opwarning{unknown \noexpand\fnote mark. TeX me again}\fi
+ \fnmarkx{\typoscale[800/800]\vfootnote\fnmarkx{#1}}%
+}
+\def\fnotemark#1{{\advance\fnotenum by#1\relax
+ \isdefined{fn:\the\fnotenum}\iftrue\thefnote
+ \else$^?$\opwarning{unknown \string\fnotemark. TeX me again}\fi}%
+}
+\def\fnotetext#1{\global\advance \fnotenum by1 \openref\wref\Xfnote{}%
+ {\typoscale[800/800]\vfootnote\fnmarkx{#1}}
+}
+\def\fnmarkx{\isdefined{fn:\the\fnotenum}\iftrue\thefnote\else$^?$\fi}
+\def\thefnote{$^{\locfnum}$)}
+\def\locfnum{\csname fn:\the\fnotenum\endcsname}
+
+\def\Xfnote{\advance\fnotenumlocal by1 \advance\fnotenum by1
+ \sxdef{fn:\the\fnotenum}{\the\fnotenumlocal}}
+
+\newcount\mnotenum \mnotenum=0 % global counter of mnotes
+
+\def\mnote#1{\ifvmode \mnoteA{#1}\nobreak\vskip-\baselineskip
+ \else \strut\vadjust{\kern-\dp\strutbox \mnoteA{#1}\kern\dp\strutbox}%
+ \fi
+}
+\def\mnoteA#1{\global\advance \mnotenum by1
+ \isdefined{mn:\the\mnotenum}\iftrue
+ \else\opwarning{unknown \noexpand\mnote side. TeX me again}\fi
+ \edef\tmp{\csname mn:\the\mnotenum\endcsname}%
+ \openref\wref\Xmnote{}%
+ \expandafter\ifx\tmp \left
+ \hbox to0pt{\kern-\mnotesize \kern-\mnoteindent
+ \vbox to0pt{\vss \setbox0=\vtop{%
+ \hsize=\mnotesize \leftskip=0pt plus 1fill\noindent#1}%
+ \dp0=0pt \box0}\hss}%
+ \else
+ \hbox to0pt{\kern\hsize \kern\mnoteindent
+ \vbox to0pt{\vss \setbox0=\vtop{%
+ \hsize=\mnotesize \rightskip=0pt plus 1fil\noindent#1}%
+ \dp0=0pt \box0}\hss}%
+ \fi
+}
+\def\Xmnote{\advance\mnotenum by1
+ \sxdef{mn:\the\mnotenum}{\ifodd\lastpage \right \else \left \fi}}
+
+\def\fixmnotes#1{\tmpnum=0
+ \loop \advance\tmpnum by1
+ \isdefined{mn:\the\tmpnum}\iftrue \sxdef{mn:\the\tmpnum}{#1}\repeat}
+
+%%%%%%%%%%%%%% \cite, \bib, \usebibtex, \usebbl -- sec. 3.23 in opmac-d.pdf
+
+\newwrite\auxfile % AUX file for BibTeX
+\newcount\bibnum % the bibitem counter
+\newcount\lastcitenum \lastcitenum=0 % for \shortcitations
+
+\def\cite[#1]{{[\chardef\tmpb=0 \citeA #1,,,%
+ \ifnum\tmpb>0 \printdashcite{\the\tmpb}\fi]}}
+\def\nocite[#1]{{\def\docite##1{}\citeA #1,,,}}
+\def\citeA #1#2,{\if#1,\else \rcite{#1#2}\expandafter\citeA\fi}
+\def\citesep{}
+
+\def\rcite#1{%
+ \if *#1\addcitelist{*}\expandafter \skiptorelax \fi
+ \expandafter \ifx \csname bib:#1\endcsname \relax
+ \addcitelist{#1}%
+ \opwarning{The cite [#1] unknown. Try to TeX me again}%
+ \docite{}\openref
+ \expandafter\gdef\csname bib:#1\endcsname {}%
+ \expandafter \skiptorelax \fi
+ \expandafter \ifx \csname bib:#1\endcsname \empty
+ \docite{}%
+ \expandafter \skiptorelax \fi
+ \def\bibnn##1{}%
+ \if &\csname bib:#1\endcsname
+ \addcitelist{#1}%
+ \def\bibnn##1##2{##1}%
+ \sxdef{bib:#1}{\csname bib:#1\endcsname}%
+ \fi
+ \docite{\csname bib:#1\endcsname}%
+ \relax
+}
+\def\printcite#1{\citesep\citelink{#1}\def\citesep{,\hskip.2em\relax}}
+\def\printdashcite#1{\hbox{--}\citelink{#1}}
+
+\def\docite#1{\if$#1$??%
+ \else
+ \ifnum\lastcitenum=0 % only comma separated list
+ \printcite{#1}%
+ \else
+ \ifx\citesep\empty % first cite item
+ \lastcitenum=#1\relax
+ \printcite{#1}%
+ \else % next cite item
+ \advance\lastcitenum by1
+ \ifnum\lastcitenum=#1\relax % cosecutive cite item
+ \mathchardef\tmpb=\lastcitenum
+ \else % there is a gap between cite items
+ \lastcitenum=#1\relax
+ \ifnum\tmpb=0 % previous items were printed
+ \printcite{#1}%
+ \else
+ \printdashcite{\the\tmpb}\printcite{#1}\chardef\tmpb=0
+ \fi\fi\fi\fi\fi
+}
+\def\shortcitations{\lastcitenum=1 }
+
+\def\bib[#1]{\par \ifnum\bibnum>0 \bibskip \fi
+ \advance\bibnum by1
+ \wbib{#1}{\the\bibnum}%
+ \hangindent=\iindent \hangafter=1
+ \noindent \dest[cite:\the\bibnum]{1.2em}%
+ \hskip\iindent \llap{[\the\bibnum] }\ignorespaces
+}
+\def\wbib#1#2{\edef\tmp{\wref\Xbib{{#1}{#2}}}%
+ \ifx\tmp\empty\else \immediate\tmp \fi
+}
+\def\Xbib#1#2{\sdef{bib:#1}{\bibnn{#2}&}}
+
+\def\addcitelist#1{\global\addto\citelist{\lcite[#1]}}
+\def\writeaux#1{\immediate\write\auxfile{\string\citation{#1}}}
+\def\writeXcite#1{\openref\immediate\wref\Xcite{{#1}}}
+\def\citelist{} \def\citelistB{}
+
+\def\usebibtex#1#2{%
+ \openref \openauxfile{#1}{#2}%
+ \def\lcite[##1]{\writeaux{##1}}\citelist
+ \global\let\addcitelist=\writeaux
+ \bgroup \readbblfile{\jobname}\egroup
+}
+\def\openauxfile#1#2{%
+ \immediate\openout\auxfile=\jobname.aux
+ \immediate\write\auxfile
+ {\percent\percent\space Opmac: AUX file reserved for bibtex only}%
+ \immediate\write\auxfile{\string\bibdata{#1}}%
+ \immediate\write\auxfile{\string\bibstyle{#2}}%
+}
+\def\readbblfile #1{%
+ \openin\testin=#1.bbl
+ \ifeof\testin
+ \opwarning{.bbl file doesn't exist.
+ Use the ``bibtex #1'' command}%
+ \else
+ \closein\testin
+ \bibnum=0
+ \def\begin##1##2{}\def\end##1{}% LaTeX environment
+ \def\newcommand##1 {}%
+ \def\httpAddr##1{\url{http:##1}}\def\\{\hfill\break}%
+ \def\newblock{\hskip .11em plus.33em minus.07em}%
+ \def\mbox{\leavevmode\hbox}\let\em=\it
+ \leftskip=\iindent
+ \bibtexhook\relax
+ \input #1.bbl
+ \par
+ \fi
+}
+\def\bibitem{\isnextchar[{\bibitemB}{\def\tmpa{}\bibitemC}}
+\def\bibitemB[#1]{\def\tmpa{#1}\bibitemC}
+\def\bibitemC#1{\bibitemD{#1}}
+\def\bibitemD#1{\ifnum\bibnum>0 \bibskip \fi
+ \advance\bibnum by1
+ \noindent \dest[cite:\if$\tmpa$\the\bibnum\else\tmpa\fi]{1.2em}%
+ \if$\tmpa$\llap{[\the\bibnum] }\wbib{#1}{\the\bibnum}\else
+ \hskip-\iindent [\tmpa]\wbib{#1}{\tmpa}\enskip
+ \fi
+ \ignorespaces
+}
+\def\genbbl#1#2{\openauxfile{#1}{#2}%
+ \immediate\write\auxfile{\string\citation{*}}%
+ \bgroup
+ \iindent=4em
+ \def\bibitemC##1{\ifnum\bibnum>0 \bibskip \fi
+ \advance\bibnum by1
+ \noindent \llap{[##1]\enspace}\ignorespaces
+ }%
+ \readbblfile{\jobname}%
+ \egroup
+}
+\def\usebbl/#1 #2 {\isdefined{bbl:#1}%
+ \iftrue \csname bbl:#1\endcsname {#2}\else
+ \opwarning{\string\usebbl/#1 #2 ... the `#1' type undefined}%
+ \fi
+}
+\sdef{bbl:a}#1{\bgroup \readbblfile{#1}\egroup}
+
+\sdef{bbl:b}#1{\bgroup
+ \let\lcite=\relax \xdef\citelist{\citelist\citelistB}%
+ \def\bibitemC##1 ##2\par{%
+ \isinlist\citelist{[##1]}\iftrue \bibitemD{##1}##2\par\fi}%
+ \readbblfile{#1}%
+ \global\let\addcitelist=\writeXcite
+ \egroup
+}
+\sdef{bbl:c}#1{\bgroup
+ \let\lcite=\relax \xdef\citelist{\citelist\citelistB}%
+ \def\bibitemC##1 ##2\par{%
+ \isinlist\citelist{[##1]}\iftrue
+ \ifx\tmpa\empty \sdef{bb:##1}{\bibitemD{##1}##2\par}%
+ \else \toks0={##2\par}%
+ \edef\tmpa{\noexpand\sdef{bb:##1}{% \tmpa have to expand
+ \noexpand\bibitemB[\tmpa]{##1}\the\toks0}}\tmpa
+ \fi\fi}%
+ \readbblfile{#1}%
+ \def\bibitemC##1{\bibitemD{##1}}%
+ \def\lcite[##1]{\csname bb:##1\endcsname}\citelist
+ \global\let\addcitelist=\writeXcite
+ \egroup
+}
+\def\Xcite#1{\addto\citelistB{\lcite[#1]}}
+
+
+%%%%%%%%%%%%%% output -- sec. 3.24 in opmac-d.pdf
+
+\output={\opmacoutput}
+
+\def\opmacoutput{\def\nl{ }%
+ \setbox0=\vbox{\makeheadline\prepage\pagebody\makefootline}%
+ \pghook \protectlist
+ \shipout\box0 \advancepageno
+ \ifnum\outputpenalty>-20000 \else\dosupereject\fi
+}
+\def\doprotect#1{\let#1=\relax}
+
+\def\prepage{\wref\Xpage{{\the\pageno}}%
+ \dest[pg:\the\pageno]{25pt}%
+ \csname pg:\the\pageno\endcsname
+}
+
+\footline={\locpgcolor\Black \hss\tenrm\thefontsize[10]\the\pageno\hss}
+
+
+%%%%%%%%%%%%%% margins -- sec. 3.25 in opmac-d.pdf
+
+\newdimen\pgwidth \newdimen\pgheight \pgwidth=0pt
+\newdimen\shiftoffset
+
+\def\margins/#1 #2 (#3,#4,#5,#6)#7 {\def\tmp{#7}%
+ \ifx\tmp\empty
+ \opwarning{\string\margins: missing unit, mm inserted}\def\tmp{mm}\fi
+ \addto\tmp{\relax}%
+ \setpagedimens #2 % setting \pgwidth, \pgheight
+ \ifdim\pgwidth=0pt \else
+ \hoffset=-1\trueunit in \voffset=-1\trueunit in
+ \if$#3$\if$#4$\tmpdim=\pgwidth \advance\tmpdim -\hsize
+ \divide\tmpdim by2 \advance\hoffset \tmpdim % left=right
+ \else \rbmargin\hoffset\hsize{#4\tmp}% only right margin
+ \fi
+ \else \if$#4$\advance\hoffset #3\tmp % only left margin
+ \else \hsize=\pgwidth % left+right margin
+ \advance\hsize -#3\tmp \advance\hsize -#4\tmp
+ \advance\hoffset #3\tmp
+ \fi\fi
+ \if$#5$\if$#6$\tmpdim=\pgheight \advance\tmpdim -\vsize
+ \divide\tmpdim by2 \advance\voffset \tmpdim % top=bottom
+ \else \rbmargin\voffset\vsize{#6\tmp}% only bottom margin
+ \fi
+ \else \if$#6$\advance\voffset #5\tmp % only top margin
+ \else \vsize=\pgheight % top+bottom margin
+ \advance\vsize -#5\tmp \advance\vsize -#6\tmp
+ \advance\voffset #5\tmp
+ \fi\fi
+ \if 1#1\else \if 2#1% double-page layout
+ \shiftoffset=\pgwidth \advance\shiftoffset -\hsize
+ \advance\shiftoffset -2\hoffset \advance\shiftoffset -2in
+ \addto\pghook{\ifodd\pageno \else \advance\hoffset \shiftoffset \fi}
+ \else \opwarning{use \string\margins/1 or \string\margins/2}%
+ \fi\fi\fi
+}
+\def\rbmargin#1#2#3{\advance#1\pgwidth \advance#1-#2 \advance#1-#3}
+
+\def\setpagedimens#1 {\isdefined{pgs:#1}\iftrue
+ \expandafter\expandafter\expandafter \setpagedimensA \csname pgs:#1\endcsname&%
+ \else \opwarning{page specification "#1" is undefined}\fi}
+\def\setpagedimensA (#1,#2)#3&{\pgwidth=#1\trueunit#3 \pgheight=#2\trueunit#3\relax
+ \ifx\pdfpagewidth\undefined \else
+ \pdfpagewidth=\pgwidth \pdfpageheight=\pgheight \fi}
+
+\sdef{pgs:a3}{(297,420)mm} \sdef{pgs:a4}{(210,297)mm} \sdef{pgs:a5}{(148,210)mm}
+\sdef{pgs:a3l}{(420,297)mm} \sdef{pgs:a4l}{(297,210)mm} \sdef{pgs:a5l}{(210,148)mm}
+\sdef{pgs:b5}{(176,250)mm} \sdef{pgs:letter}{(8.5,11)in}
+
+\def\trueunit{}
+\def\magscale[#1]{\mag=#1\def\trueunit{true}%
+ \ifdim\pgwidth=0pt \else \truedimen\pgwidth \truedimen\pgheight \fi
+ \ifx\pdfpagewidth\undefined \else
+ \truedimen\pdfpagewidth \truedimen\pdfpageheight
+ \pdfhorigin=1truein \pdfvorigin=1truein % Origin is independent off \mag
+ \fi}
+\def\truedimen#1{#1=\expandafter\ignorept\the#1truept }
+
+%%%%%%%%%%%%%% REF file is read now -- sec 3.26 in opmac-d.pdf
+
+\inputref
+\endinput
+
+%%%%%%%%%%%%%% History of versions:
+
+beta (a) Nov. 2012 ... first released version.
+Dec. 2012 ... first stable version
+
+%%%%%%%%%%%%%% End of opmac.tex
+