

Keys:

Q                    : Quit (no save!)
ESC                  : Quit (no save!)

Cursor U/D/L/R       : Move object
Shift+Cursor U/D/L/R : Move object fast

+,-                  : Select Next/Prev Object 
SPACE                : Add Object to Level
Mouse Left Button    : Add Object to Level
x,y                  : Flip Object in x,y (if possible)
h,v                  : Change h,v scale (if possible)

e                    : Enter Steel mode
Select Object in lower Area
                     : Enter Object Mode (depending which object selected)

n                    : New level
1,2,3,4,5            : Select Level Type (update only after save/load)
c                    : Enter Comment
s                    : Save (enter filename)
l                    : Load (enter filename)
b                    : Screenshot
r                    : create ROM and run in emulator
t                    : set lemming types
z                    : set basic level things

8,9                  : browse throu original levels