During play, type any of the following:
"IDJETF"-------------Fill jetpack fuel
"IDKEYZ"----Activate keyboard controls
"IDNRGY"-------------Fill energy meter
"IDMYSZ"--------------------------????
"IDGO\\\\"------------------------????
"IDTRAI"--Press 'F1' for invincibility
"IDGIWR"--Activates the following keys
Press '1'-'5'--------to select weapons
'SPACE'------------to activate jetpack