Level skip
Hold [Ctrl] and type fodder when you are at the map screen. A white border will appear to verify entry. Then press [Enter] to display the "Phase Complete" message and skip to the next mission.

Cheat mode
Click on the save game icon at the "Boot Hill" screen. Then type JABULA and press [Enter] at the filename prompt. The phrase "Cheat Mode Active" will appear to verify entry. Then press one of the keys below while playing to activate the desired cheat.