Press "~" to open the console and enter one of the following commands: 
 
 Code - Effect:

 prestrack - Last music track played 
 drawface - Toggle drawing of texture faces 
 god - Toggle God mode 
 version - Return game version 
 map - Load another map (see further on for possible maps) 
 mapcomplete - Mark the map as completed (putting you at the next map) 
 noclip - Toggle walking through obstacles 
 respawn - Toggle monster from respawn 
 monster - Turn monsters off 
 developer - Toggle developer mode 
 record - Start recording a demo 
 stoprecord - Stop recording a demo 
 play - Play a recorded demo 
 stopplay - Stop playing a recorded demo 
 musictrack - Change the current playing musictrack 
 drawtris - Draw the map sections 
 drawgun - Toggle the drawing of weapons held 
 drawone - unknown 
 drawportal - Toggle Outlining of portals and doors 
 drawnormal - toggle Draw wall normals 
 pview - Toggle 3rd person or static view 
 drawbound - Toggle highlighting of bound objects 
 drawcell - Toggle highlighting of individual cells 
 fov - Change the field of view 
 jumpstep - Change the jumpstep value 
 groundacc - Accelleration speed on ground 
 groundslow - Slowing speed on ground 
 gravity - Gravity 
 exit - Quit the game 
 maxspeed - Maximum moving speed 
 airacc - Acelleration in the air 
 airslow - Slowing in the air 
 soundsys - change current used sound system 
 bombslow - Speed at which bombs slow 
 musicvol - Ingame music volume 
 soundvol - Ingame sound volume 
 autoswitch - Toggle autoswitch weapons mode 
 fullscreen - Toggle between full screen or windowed mode 
 colordepth - Change the current bitdepth 
 loadconfig - Load config from file 
 picmip - Change amount of offset pixels during mipmapping 
 gamma - Change gamma 
 drawfsp - Show framerate, set to 1 to turn on 
 invertmouse - Invert mouse control 
 killdepla - Amount of Depla's killed 
 killmorba - Amount of Morba's killed 
 killzeubat - Amount of Zeubat's killed 
 killsubzerat - Amount of Subzerats killed 
 killzemummy - Amount of Zemummy killedvideomode - Change the current videomode 
 statutbar - Toggle the HUD display 
 animspeed - Animation speed 
 lightmap - Toggle lightmapping 
 cullface - Toggle backface culling 
 renderent - Toggle rendering of entities 
 directstart - Toggle direct start? 
 noscript - Toggle the scripting in the engine on or off 
 resetgame - Reset internal game state 
 saveconfig - Save current config to file 


 by unknown