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, 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.
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