Type the following codes to achieve the desired result:
1. Ctl-WIDEPIPE (hold down the Control key until you type the entire word) enables the cheat mode when typed when just starting a new game or restoring a saved game. 
2. Ctrl-T teleports you to other locations from 101-111, 201-215, 301, 304, 307, 311, 313, 316, 318, 351, 352, 354, 357, 361, 401-413, 501, 503, 506, 507, 508, 511, 512, 513, 551, 601-612, 701-706, 751, 752, 801-804 
3. Ctrl-O gives you objects for 0 to 54 save 18, 38, and 44 
4. Ctrl-G changes global flags not a real good idea 
5. Ctrl-Z unsticks Rex, corrects space bar effects, and corrects the blank screen bug in cheat mode 
6. SPACE BAR causes bizzare effects, try it 
7. Ctrl-F toggles frame-by-frame mode 
8. mainmenu -w:1 when typed from the dos prompt in the program directory plays "A Quick Death" cut scene. 
9. mainmenu -w:2 when typed from the dos prompt in the program directory plays "An Honorable Death" cut scene. 
10. mainmenu -w:3 when typed from the dos prompt in the program directory plays the "Victory!" cut scene. 
11. mainmenu -w:4 when typed from the dos prompt in the program directory plays "The Decompression Ending" cut scene. 

