Thank you guys! If you can, please point me to some screenshot/FAQ, like the ever diligent MrFlibble did, because MobyGames requires sources!
@MrFlibble: next time don't be shy, you could've added Powerslave yourself to that group, you're at Moby's as well after all
As I suspected, there were traces of this function in
Wolfenstein 3D but it was
removed in later versions?