gox: start a simple X session (e.g. twm + xterm) with variable color
     depth (bpp) and screen resolution. Useful for running games that
     need lower resolution and/or number of colors.

Usage: gox [-c <cmd>] [-d <display>] <width> <bpp>

Defaults: width: 800
          bpp:   16
          cmd:   exec twm -f /etc/X11/twm/system.twmrc
Notes:
	The root password will be required (to run: xinit -- -xf86config <file>
	via su(1))

	A free DISPLAY is searched for from :0 to :9 unless -d is used.

	The <cmd> above in -c is usually the window manager command to run,
	but it could simply just be the game (if it can run with no wm).

	The template xf86config file: "/etc/X11/XF86Config" must have
	a "Screen" section with all of the desired resolutions on a
	"Modes" line. All of those resolutions must, of course, have
	corresponding "ModeLine" lines in the config file that work.
	If there are uncommon resolutions, it will be best if the used
	"Screen" section is the last one in the file since the resolutions
	are extracted from it.

Additional options:
	-u <user>	run the X session as <user>
	-C <cmd>	run <cmd> in background before starting the wm (i.e.
			the -c cmd). E.g. start the game, but also have a
			window manager.