What it does:

Enables the following cheat codes:

God Mode!!!

Warps you to a level of your choice.

Gives you 3 keys (v1.2 only).

Gives you a music jukebox.

Reveals the entire map.

Lets you use the keypad 0 to cycle arms.

Makes the player's view follow a missile.

Gives you a lot of items.

Lets you fly.

Produces a bad effect.

Makes you bounce off walls.

Restarts the level.

Hurts yourself.

Turns on the auto run.

Returns the game to normal.

Turns down the light.

Turns the light back to normal.

Turns fog on.

Turns fog off (London spelled backwards).

Turns light sourcing on.

Turns light sourcing off.

Exits to Dos.

Ends the current level and takes you to the next.

Turns floor and ceiling textures off.

Turns floor and ceiling textures on.

Gives you bulletproof armor.

Gives you asbestos armor.

Gives you a gas mask.

Gives you extra items.

Makes you die.

Makes you re-enter the current level.

Gives you the dual pistols.

Gives you the machine gun.

Gives you the bazooka.

Gives you the heet seeker.

Gives you the drunk missle.

Gives you the fire bomb.

Gives you the flamewall.

Gives you the hand of god (v1.0).

Gives you the hand of god (v1.1 and better).

Gives you the split missle.

Gives you the kinetic energy sphere.

Gives you the excalibat.

Gives you the dog weapon.

Shows you your current angle and position.

Rotates you (move the mouce wile the game is paused).

Extreme Gib mode.

Puts you in tempory dog mode.

Lets you record a demo.

Lets you stop recording a demo.

Lets you play a demo.