This is weird....
I remember seeing a picture from a DooM II level on someone's school folder (I think) a few years ago. The picure had two sloping ramps.
It was too early for source ports with that capability.
The picture hadn't been faked either.
About that idiot messing up the names. Any of you remember that stupid bullshit American 60 minutes report showing "US Marines training on DooM" When it was really Marines deathmatching in Quake. Lying bastards.