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% showidx.sty 29-Oct-85
\newinsert\@margin
\newinsert\indexbox
\dimen\indexbox=\maxdimen
\def\@showidx#1{\insert\indexbox{\small
\hsize\marginparwidth
\hangindent\marginparsep \parindent\z@
\everypar{}\let\par\@@par \parfillskip\@flushglue
\lineskip\normallineskip
\baselineskip .8\normalbaselineskip\sloppy
\raggedright \leavevmode
\vrule height .7\normalbaselineskip width \z@ #1\vrule
height \z@ depth .3\normalbaselineskip width \z@}}
\def\@leftidx{\hskip-\marginparsep \hskip-\marginparwidth}
\def\@rightidx{\hskip\columnwidth \hskip\marginparsep}
\def\@mkidx{\vbox to 0pt{\hbox{\if@twocolumn
\if@firstcolumn \@leftidx \else \@rightidx \fi
\else \if@twoside \ifodd\c@page \@rightidx
\else \@leftidx \fi
\else \@rightidx \fi
\fi
\box\indexbox}\vss}}
\def\raggedbottom{\def\@textbottom{\vskip
\z@ plus.0001fil}\let\@texttop\@mkidx}
\def\flushbottom{\let\@textbottom\relax \let\@texttop\@mkidx}
\def\@wrindex#1#2{\let\thepage\relax
\xdef\@gtempa{\write#1{\string
\indexentry{#2}{\thepage}}}\endgroup\@gtempa
\@showidx{#2}\if@nobreak \ifvmode\nobreak\fi\fi\@esphack}
\def\@index#1{\@showidx{#1}\endgroup\@esphack}
\def\index{\@bsphack\begingroup\@sanitize\catcode"20=10\relax\@index}
\def\makeindex{\if@filesw \newwrite\@indexfile
\immediate\openout\@indexfile=\jobname.idx
\def\index{\@bsphack\begingroup\@sanitize
\catcode"20=10 \@wrindex\@indexfile}\typeout
{Writing index file \jobname.idx }\fi}
\flushbottom
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