In the player history screen type darkgoat - this will enable they following cheat keys. Type them in the player history screen:

Left-shift Backspace - Add selected mission to history
Left-shift and the = key - Toggel outcome of selected mission
Left-shift o - Add all missions

The following cheat keys are typed in the game:

Left-shift p - Dumps a PCX image file to PSG\RESOURCE\ART\SCREENS
Left-shift 8 - Jump to vicinity of target
Left-shift 9 - Match Velocity with target
Left-shift 0 - Explode targetted ship
Left-shift i - Make player invulnerable
Left-shift w - force mission win