"Start the game using 'bstone powerball' at the command line
After the game starts, a Jam logo will appear. Hold down both shift keys (left first, then right).
After the you start playing, hold BACKSPACE and press one of these keys:
BACKSPACE, A  -  Add players to AutoMap
BACKSPACE, B  -  Border color
BACKSPACE, C  -  Statistics
BACKSPACE, D  -  Invisibility
BACKSPACE, E  -  Jumps ahead to end of next level
BACKSPACE, F  -  Displays x and y coordinates and angle
BACKSPACE, G  -  God mode
BACKSPACE, H  -  Minus 1% health
BACKSPACE, I  -  Free items
BACKSPACE, M  -  Displays memory usage
BACKSPACE, O  -  Show all hidden walls on automap
BACKSPACE, Q  -  Quit to DOS
BACKSPACE, S  -  Slow motion
BACKSPACE, T  -  Displays walls, sprites, and sound waveforms.
BACKSAPCE, U  -  Unlock all floors
BACKSPACE, W  -  Warp to any level"
