FVWM: ResizeMoveMaximize bug or feature? and alternativ es

When I use "Maximize 100 100" on an xterm, it leaves a margin on the 
bottom and right of the window due to left over fractions of character 
height/width, which is fine.  I'd like to move that margin to the top 
and left of the window, so I tried to use "ResizeMoveMaximize frame 100 
100 -0 -0" but the margin is still at the bottom and right.

Does anyone have any suggestions for how to accomplish what I want?  Is 
this a bug I should report?

Thanks,
Mark