\define@key{Gm}{hdivide}{\Gm@parse@divide{#1}{tmargin}{width}{bmargin}}%
\define@key{Gm}{vdivide}{\Gm@parse@divide{#1}{rmargin}{height}{lmargin}}%
\define@key{Gm}{divide}{\Gm@parse@divide{#1}{tmargin}{width}{bmargin}%
\define@key{Gm}{hdivide}{\Gm@parse@divide{#1}{tmargin}{width}{bmargin}}%
\define@key{Gm}{vdivide}{\Gm@parse@divide{#1}{rmargin}{height}{lmargin}}%
\define@key{Gm}{divide}{\Gm@parse@divide{#1}{tmargin}{width}{bmargin}%