Чит коды на Doom 2 (Deathmatch!) (PC)

There seems to be something strange with the IDDT cheat (the "map-mode").
It works on the Nightmare level, whereas the others don't.

But the real interesting thing is :
Hold [Alt] while typing IDDT 3 times, on the map screen in deathmatch
mode enables you to see all monsters and your human enemies!

This may not work on all versions (surely not on version 1.9 and above)
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