Lazarus

During play, type any of the following:

IDNRGY    Fill energy meter
IDJETF    Fill jetpack fuel
IDGO\\\\  ?
IDKEYZ    Activate keyboard controls
IDMYSZ    ?
IDTRAI    Press 'F1' for invincibility
IDGIWR    Activates the following keys
          Press '1'-'5' to select weapons and 'SPACE' to activate jetpack