Console
From DoomWiki.org

Console is an internal command prompt of a game. It can be used to activate various game functions and to alter the game's settings. It also functions as a log that lists some of the previous game events and messages along with the commands that have been activated in it.
History[edit]
Classic Doom games and other games based on the Doom engine did not originally include a console, since it was first introduced in Quake, with the first official Doom series game that was released with a console feature being Doom 3. After the Doom source code was released on December 23, 1997, the feature was implemented into various source ports, and is a very common addition among the more advanced ports for the game.
In addition to source ports and modern titles, some editing utilities also feature a console. It can be used to modify the configuration, perform debugging, or execute certain advanced commands.
Source ports with a console feature[edit]
- Doom + Doom II
- EDGE
- DelphiDoom
- Doom Legacy
- Doom Retro
- Doomsday
- Eternity Engine
- ReMooD
- SMMU
- Vavoom
- ZDoom and derivatives