2 Hidden codes:

Create a file entitled NOUGAT.LF in the scendancy
directory on your hard disk. Now start the game
and press the following keys for cheats:

1 to 7 Take control of other species
Alt-E Steal knowledge from other races
I Speed up production (on the planet screen)
O Maximum population (on the planet screen)
T Build a colony (on the planet screen)
Shift-M Increase your population by one (on the planet screen)
R Take over an occupied colony
C Finish the current project (on the research screen)
D Learn everything (on the research screen)
Alt-D Provide your co-ordinates
Alt-W Provide a lot of internal data
Alt-G Save your current screen as a GIF file
S Display all stars explored