put a file in a folder DUKE3D and necessarily compromising read-only attribute. management tried to make as convenient as possible. You can make your own reassign him to do this, remove the attribute reading, change management, quit the game and reinstall the attribute "read only"

Joystick control
joystick center-fire
1-up sight
2 previous arms
3 The following weapons
4 invertar previous item
5 jump
6 implements the next item
7-sight down
8 is designated
9-sit
0-action (open door)
*- Map
#-Jetpack
Left soft-use inventory objects
with output in the menu

rotating screen: push the green button, then the buttons 2, 3 and 4, depending on the size of your screen and then the green button.