% typearea.sty -- by Frank Neukam  (01 Dec 1993)

\newif\if@hincl
\def\headincludeon{\@hincltrue}
\def\headincludeoff{\@hinclfalse}
\@hinclfalse
\newif\if@fincl
\def\footincludeon{\@fincltrue}
\def\footincludeoff{\@finclfalse}
\@finclfalse
\newdimen\paperwidth
\newdimen\paperheight
\newdimen\ta@bcor
\newcount\ta@div
\newdimen\ta@hblk
\newdimen\ta@vblk
\newdimen\ta@temp
\paperwidth 210mm
\paperheight 297mm
\def\typearea{\@ifnextchar [{\@typearea}{\@typearea[0mm]}}
\def\@typearea[#1]#2{
 \normalsize
 \ta@bcor #1
 \ta@div=#2
 \ta@hblk \paperwidth
 \advance \ta@hblk by -\ta@bcor
 \divide\ta@hblk by \ta@div
 \oddsidemargin -1in
 \evensidemargin -1in
 \if@twoside
  \advance\oddsidemargin by \ta@hblk
  \advance\oddsidemargin by \ta@bcor
  \advance\evensidemargin by 2\ta@hblk
 \else
  \advance\oddsidemargin by 1.5\ta@hblk
  \advance\oddsidemargin by \ta@bcor
  \evensidemargin\oddsidemargin
 \fi
 \textwidth \paperwidth
 \advance\textwidth by -\ta@bcor
 \advance\textwidth by -3\ta@hblk
 \headheight 15pt
 \headsep 1.5\baselineskip
 \footskip 3.5\baselineskip
 \ta@vblk \paperheight
 \divide\ta@vblk by \ta@div
 \ta@temp \paperheight
 \advance\ta@temp by -3\ta@vblk
 \if@hincl
  \advance\ta@temp by -\headheight
  \advance\ta@temp by -\headsep
 \fi
 \if@fincl
  \advance\ta@temp by -\footskip
 \fi
 \textheight \topskip
 \@whiledim\textheight<\ta@temp
  \do{\advance\textheight by \baselineskip}
 \topmargin \ta@vblk
 \advance\topmargin by -1in
 \if@hincl \else
  \advance\topmargin by -\headheight
  \advance\topmargin by -\headsep
 \fi
 \if@twoside
  \marginparwidth 1.5\ta@hblk
 \else
  \marginparwidth \ta@hblk
 \fi
 \marginparsep 1cc
 \marginparpush 0.45\baselineskip}
\def\areaset{\@ifnextchar [{\@areaset}{\@areaset[0mm]}}
\def\@areaset[#1]#2#3{
 \normalsize
 \ta@bcor #1
 \textwidth #2
 \textheight #3
 \ta@hblk \paperwidth
 \advance\ta@hblk by -\ta@bcor
 \advance\ta@hblk by -\textwidth
 \divide\ta@hblk by 3
 \oddsidemargin -1in
 \evensidemargin -1in
 \if@twoside
  \advance\oddsidemargin by \ta@hblk
  \advance\oddsidemargin by \ta@bcor
  \advance\evensidemargin by 2\ta@hblk
 \else
  \advance\oddsidemargin by 1.5\ta@hblk
  \advance\oddsidemargin by \ta@bcor
  \evensidemargin\oddsidemargin
 \fi
 \headheight 15pt
 \headsep 1.5\baselineskip
 \footskip 3.5\baselineskip
 \ta@vblk \paperheight
 \advance\ta@vblk by -\textheight
 \divide\ta@vblk by 3
 \if@hincl
  \advance\textheight by -\headheight
  \advance\textheight by -\headsep
 \fi
 \if@fincl
  \advance\textheight by -\footskip
 \fi
 \topmargin \ta@vblk
 \advance\topmargin by -1in
 \if@hincl \else
  \advance\topmargin by -\headheight
  \advance\topmargin by -\headsep
 \fi
 \if@twoside
  \marginparwidth 1.5\ta@hblk
 \else
  \marginparwidth \ta@hblk
 \fi
 \marginparsep 1cc
 \marginparpush 0.45\baselineskip}
\ifcase \@ptsize\relax \typearea{8} \or \typearea{10} \or \typearea{12} \fi