This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "*.cfg" file in the "profiles" sub-directory in the game directory. Change the "Developer" "0" entry to "Developer" "1". Note: This must be done prior to each time the game is started. Additionally, locate the "enabledevice "##mouse" line in the file. Any of the previously listed codes can be inserted directly below that line as follows:

rangebind "##keyboard" "Q" 0.000000 0.000000 "GimmieGimmieGimmie"
rangebind "##keyboard" "F11" 0.000000 0.000000 "Invuln"

Save the file and begin a game. Press [F11] for invincibility or Q for all weapons. Enter the "Setup" screen and select "Keyboard". New options for "Cheats" and "HUD Toggles" will appear.