% \AddToCheckSum{67}
%
% The \option{simple} option adds the optional argument to \cs\include, and
% does nothing else.
%
% \begin{macro}{\include}
%   I'm not really sure why the \cs\relax is there; I'm imitating the kernel's
%   command. 
%    \begin{macrocode}
\defcommand\include {%
  \relax
  \ifnum\@auxout=\@partaux
    \@latex@error{\string\include\space cannot be nested}\@eha
  \else
    \expandafter\@include
  \fi
}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@include}
%   \mbox{}
%    \begin{macrocode}
\defcommand\@include [2][] {%
  \clearpage
  \if@filesw
    \immediate\write\@mainaux{\string\@input{#2.aux}}%
  \fi
  \@tempswatrue
  \if@partsw
    \@tempswafalse
    \edef\reserved@b{#2}%
    \@for\reserved@a:=\@partlist\do
      {\ifx\reserved@a\reserved@b\@tempswatrue\fi}%
  \fi
  \if@tempswa
    \let\@auxout\@partaux
    \if@filesw
      \immediate\openout\@partaux #2.aux
      \immediate\write\@partaux{\relax}%
    \fi
%    \end{macrocode}
% All we did was change |#1| to |#2| and add the next line.
%    \begin{macrocode}
    #1%
    \@input@{#2.tex}%
    \clearpage
    \@writeckpt{#2}%
    \if@filesw
      \immediate\closeout\@partaux
    \fi
  \else
    \@nameuse{cp@#2}%
  \fi
  \let\@auxout\@mainaux
}
%    \end{macrocode}
% \end{macro}