IDDQD = God mode
IDKFA = All armour, all guns, all ammo, all keys
IDFA = All armour, all guns, all ammo, NO keys
IDDT = 1st time all map, 2nd all enemies show 3rd removes effects
IDCLEV## = 1st #= episode, 2nd #=level
IDMUS## = 1st #= episode, 2nd #= level
IDCLIP = Clipping mode
IDBEHOLDS = Berzerker pack
IDBEHOLDI = Invisible
IDBEHOLDV = Invulnerable
IDBEHOLDR = Radiation suit
IDBEHOLDA = Reveals entire map
IDBEHOLDL = Light amplification goggles