% multind style originally written by F.W. Long, 1991.
% ws-multind style modified by Rajesh, WSPC, 2004
% indexes document style option for producing multiple indexes
% for use with wspc book styles.

% Modified \makeindex and \index commands to allow multiple indexes
% in both cases the first parameter is the index name.
% They now work more like \@starttoc and \addcontentsline.
% \index is no longer defined inside \makeindex but determines
% whether the appropriate file is defined before writing to it.

\def\makeindex#1{\begingroup
  \makeatletter
  \if@filesw \expandafter\newwrite\csname #1@idxfile\endcsname
  \expandafter\immediate\openout \csname #1@idxfile\endcsname #1.idx\relax
  \typeout{Writing index file #1.idx }\fi \endgroup}

\def\index#1{\@bsphack\begingroup
               \def\protect##1{\string##1\space}\@sanitize
               \@wrindex{#1}}

% \@wrindex now checks that the appropriate file is defined.

\def\@wrindex#1#2{\let\thepage\relax
   \xdef\@gtempa{\@ifundefined{#1@idxfile}{}{\expandafter
      \write\csname #1@idxfile\endcsname{\string
      \indexentry{#2}{\thepage}}}}\endgroup\@gtempa
   \if@nobreak \ifvmode\nobreak\fi\fi\@esphack}

% Modified \printindex command to allow multiple indexes.
% The first parameter is the index name.
% The second parameter is the index title (as printed).

\newif\if@restonecol
\def\printindex#1#2{\@restonecoltrue\if@twocolumn\@restonecolfalse\fi
  \columnseprule \z@ \columnsep 35pt
  %\newpage\thispagestyle{plain} \twocolumn[\chapter*{#2}]
  %\cleardoublepage\thispagestyle{plain} \twocolumn[\title{#2}]
   \cleardoublepage\thispagestyle{plain}
   \twocolumn[\vskip 13pt\chapter*{#2} \vskip 6pt]
  \markright{{#2}}
 \@input{#1.ind}}

\def\theindex{\small             %9pt
 \parindent\z@
 \parskip\z@ plus .3pt\relax\let\item\@idxitem}
\def\@idxitem{\par\hangindent 1em}
\def\subitem{\par\hangindent 3em \hspace*{18pt}}
\def\subsubitem{\par\hangindent 3.5em \hspace*{24pt}}
\def\endtheindex{\if@restonecol\onecolumn\else\clearpage\fi}
\def\indexspace{\par \vskip\baselineskip}
\def\see#1#2{{\em see\/} #1}

\def\aindx#1{\index{authors}{#1}}   %For Author index
\def\sindx#1{\index{subject}{#1}}   %For Subject index
\def\gindx#1{\index{general}{#1}}   %For General index