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% -- -- Hyperfweb.tex -- --
%
% This one does the same thing for fweb as Tanmoy Bhattacharyya's
% hyperweb.tex does for Pascal web but without the input hacking hacks
%
% It rather assumes an fweave where every occurrence of a module number
% is screened by a macro call, so that the macros downbelow
% only have to swich meaning of one macro, according to context
%
% Please note that this is a supplement not a replacement
% for fwebmac.sty
%
%
\input hyperbasics
\def\HySRnull#1{#1}
\let\HySR=\HySRnull
\def\HySRef#1{\hyperref{}{section}{#1}{#1}}
%
%
%
%
%
\def\note#1#2.{\WY\noindent{\let\HySR=\HySRef
\hangindent2em\baselineskip10pt\eightrm#1~#2.\par}}
\def\startsection{\WQ\noindent{\let\*=\empty\bf\hyperdef\hypernoname
{section}{\modstar}{\let\*=\lapstar\modstar.}%
\ifx\includefile\empty\else\ [{\tt\includefile}]\fi\quad}}
\def\WX#1:#2\X#3\X{\ifmmode\gdef\XX{\null$\null}\else\gdef\XX{}\fi
\XX$\langle\,$#2{\let\HySR=\HySRef
\eightrm\kern.5em#1}$\,\rangle^{\rm #3}$\XX}
\def\lheader{\mainfont\hyperdef\hypernoname{page}{\the\pageno}%
{\the\pageno}\eightrm\qquad\Whead\hfill\Wtitle\qquad
\ifnum\pageno=\contentspageno\else
\tensy x\mainfont\Wmodno
\fi}
\def\rheader{\ifnum\pageno=\contentspageno\else
\tensy x\mainfont\Wmodno
\fi
\eightrm\qquad\Wtitle\hfill\Whead
\qquad\mainfont\hyperdef\hypernoname{page}{\the\pageno}%
{\the\pageno}}
\newbox\hyperbox
\newif\iffooter\footertrue
\def\normaloutput#1#2#3{
\ifodd\pageno\hoffset=\pageshift\fi
\shipout\vbox
{
\vbox to\fullpageheight
{
\iftitle\global\titlefalse
\else \hbox to\pagewidth
{\vbox to10pt{}%
\ifidenticalpageheads#2\else
\ifodd\pageno
#3% Pg nos alternate left \& right.
\else#2\fi
\fi
}%
\fi
\vfill#1% Parameter |#1| is the page itself.
\iffooter\vfill\copy\hyperbox\fi
}
}
\global\advance\pageno by1}
{\boxmaxdepth=0pt\relax\global
\setbox\hyperbox\hbox to \pagewidth{GO TO:\hfil\hyperref{}{page}{1}{first
page}\hfil\hyperref{}{section}{INDEX}{Index}\hfil\hyperref{}{section}%
{SECTIONS}{Section Names}\hfil\hyperref{}{section}{CONTENTS}{Contents}}}
\iffooter\advance\pageheight by -\ht\hyperbox\setpage\relax\fi
\def\Winx{\par\vskip6pt plus 1fil
\let\HySR=\HySRef
\write\cont{}% Ensure that the contents file isn't empty
\closeout\cont % The contents information has been fully gathered
\output{\ifpagesaved\normaloutput{\box\Sbox}\lheader\rheader\fi
\global\setbox\Sbox=\page \global\pagesavedtrue}
\pagesavedfalse \eject % Eject the page-so-far and predecessors
\setbox\Sbox\vbox{\unvbox\Sbox}% Take it out of its box
\vsize=\pageheight \advance\vsize by -\ht\Sbox % The remaining height
\hsize=.5\pagewidth \advance\hsize by -10pt
% Column width for the index (20pt between cols)
\parfillskip 0pt plus .6\hsize % Try to avoid almost empty lines
\def\lr{L}% This tells whether the left or right column is next
\output{\if L\lr\global\setbox\Lbox=\page \gdef\lr{R}
\else\normaloutput{\vbox to\pageheight{\box\Sbox\vss
\hbox to\pagewidth{\box\Lbox\hfil\page}}}\lheader\rheader
\global\vsize\pageheight\gdef\lr{L}\global\pagesavedfalse\fi}
%% \message{Index:}
\parskip 0pt plus .5pt
\outer\def\:##1, {\par\hangindent2em\noindent##1:\kern1em}% Index entry
\def\[##1]{$\underline{##1}$}% Underlined index item
\def\(##1){$^{\rm ##1}$}% Language marker
\hyperdef\hypernoname{section}{INDEX}{}%
\let\Windexspace\medskip % Spacing between letter groups in index.
\rm \rightskip0pt plus 2.5em \tolerance 10000 \let\*=\lapstar
\hyphenpenalty 10000 \parindent0pt}
\def\Wfin{\par\vfill\eject
\ifpagesaved\null\vfill\eject\fi % Output a null index column
\if L\lr\else\null\vfill\eject\fi % Finish the current page
\parfillskip 0pt plus 1fil
\def\rhead{NAMES OF THE SECTIONS}
\output{\normaloutput\page\lheader\rheader}
\setpage
\hyperdef\hypernoname{section}{SECTIONS}{}%
\def\note##1##2.{\quad{\eightrm##1 ##2.}}
\def\WU{\note{Used in }}% Cross-reference for uses of sections
\def\:{\par\hangindent 2em}\let\*=*}
\def\Wcon{\par\vfill\eject
\rightskip 0pt \hyphenpenalty 50 \tolerance 200
\setpage
\output{\normaloutput\page\lheader\rheader}
\titletrue % Prepare to output the table of contents
\hyperdef\hypernoname{section}{CONTENTS}{}
\pageno=\contentspageno \def\rhead{TABLE OF CONTENTS}
\topofcontents
\catcode`\@=11
\hbox to\hsize{\hfil Section\hbox to3em{\hss Page}}
\def\WZ##1##2##3##4{\hbox to\hsize{\kern##1em\ignorespaces##2
\leaders\hbox to .5em{.\hfil}\hfil\ %
\let\preserve=\*\let\*=\empty
\hyperref{}{section}{##3}{\let\*=\preserve##3}%
\hbox to3em{\hss\hyperref{}{page}{##4}{##4}}}}
\let\WIM\WIN % Restore the proper definition.
\readcontents\relax % Read the contents info.
\botofcontents
\FWEBend}
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