To activate a cheat, attach its corresponding switch to the command line parameter.

Effect Code
Disable fog -NOFOG
Disable lens flare -NOLENSFLARE
Disable network support -NONETWORK
Disable MIP Mapping -NOMIPMAP
Disable sky -NOSKY
Disable shadows -NOSHADOWS
Disable Surround Sound -NO3DSOUND
Display frame rate -FRAMERATE
Set resolution -SCREENMODE