This appears in the Mod Menu in UT's GUI. It allows you to adjust many of the properties in Unreal Tournament to personal preference.
The alterable properties are:
Altering the respawn time of weapons (up to 6x faster)
Altering the respawn time of pickups (up to 6x faster)
Altering the respawn time of ammo (up to 6x faster)
Changing the amount of ammo given by ammo pickups
Changing the charge of the Jump Boots
Altering the armor value of the Shield Belt
Altering the armor value of the Body Armor
Altering the armor value of the Thigh Pads
Increasing/Decreasing the health given by Medboxes
Increasing/Decreasing the health given by Health Vials
Increasing/Decreasing the duration of Invisibility
Increasing/Decreasing the duration of UDamage
The ability to change all Players' default health
The ability to change your starting weapon to any of the UT weapons