+\def\Gm@clean{%
+ \ifnum\Gm@cnth<4\let\Gm@tmargin\@undefined\fi
+ \ifodd\Gm@cnth\else\let\Gm@bmargin\@undefined\fi
+ \ifnum\Gm@cntv<4\let\Gm@rmargin\@undefined\fi
+ \ifodd\Gm@cntv\else\let\Gm@lmargin\@undefined\fi
+ \ifGm@hbody\else
+ \let\Gm@hscale\@undefined
+ \let\Gm@width\@undefined
+ \let\Gm@textwidth\@undefined
+ \fi
+ \ifGm@vbody\else
+ \let\Gm@vscale\@undefined
+ \let\Gm@height\@undefined
+ \let\Gm@textheight\@undefined
+ \fi
+ }%