Enter the character selection screen. Then press [Delete], type porkcharsui and press [Enter]. Press one of the following keys to activate the corresponding debug function.

Effect - Key
Screen capture in .TGA format1 - D
Zoom out - K
Alternate zoom out - ]
Zoom in - L
Alternate zoom in - [
Pan camera up - [Keypad 8]
Pan camera down - [Keypad 2]
Pan camera right - [Keypad 6]
Pan camera left - [Keypad 4]
Center camera view - [Home]
Pause and advance single frame - [Numpad Plus]
All weapons with full ammo - [Keypad Asterisk]
Current status and coordinates - C
Change screen mode - R
Restart level - [F12]