Re-Entry
Allows contests to be re-entered.

Extra life
Self-explanatory

Score
Awards extra points.

Summon Semjase
UFO flies overhead.

Enable keypad cheat keys
Enables the following cheat keys on the numerical keypad.

[Keypad 9] - Speed up
[Keypad 3] - Slow down
[Keypad 1] - Wipe out
[Keypad 2] - Wipe out and lose a life

Beach nav mode
Alters the navigation on the beach scene, making somewhatsimilar to Doom.

TRON mode
Self-explanatory

Music information
Click on Leroy.