Instructions: 


The colored horizontal bar at the lower left in the introduction
screens shows the current speed settings of the game. The red 
part is the minimum amount of time per animation cycle the 
processor is given to take care of other things. The total bar, 
i.e. red plus yellow, represents the minimum amount of time an 
animation cycle is allowed to take.

Press A or S to decrease or increase the red time and Z or X to 
decrease or increase the total time. Default values are 20 ms 
for the former and 100 ms for the latter, which feel OK on a Sun 
SPARCstation 4, but you may need to tweak and tune them a bit to
make the game run optimally smooth on your machine -- especially
if it has a slow processor.

'I' key for UP, 'K' key for DOWN, 'J' key for LEFT, and 'L' key
for RIGHT.