Gkimosaic Command Summary:

	return				quit
	q				quit
	r				redraw screen with new parameters
	spacebar			continue
	?				print help information

	:nx N				change value of nx to N
	:ny N				change value of ny to N
	:fill yes, :fill+, :fill	sets fill = yes
	:fill no, :fill-		sets fill = no
	:rotate yes, :rotate+, :rotate	sets rotate = yes
	:rotate no, :rotate-		sets rotate = no
	:skip +/-N			skip forward/backward N plots