On the title screen, type "IT'S EASY WHEN YOU KNOW HOW" for (there
        might not be an apostophe) ifinite lives and energy.  Also, for
        unlimited lives type "SIAMESE".  Use the following keys:
                    'F1'__________________Normal rifle.
                    'F2'_____________________Full auto.
                    'F3'_____________________Three way.
                    'F4'______________________Shot gun.