21.2 Flip bits. The first mutation 21.2 Flip bits. The original default is to flip one bit.
Successive mutations are cumulative.
The following option depends on whether the network has one homogeneous rule, or a rule mix. In a network with one homogeneous rule the random bitflips apply to one rule only. The maximum number of bits that may be flipped equals the size of the rule table. Mutations are made by picking a random bit of a random cell's rule table for each bit flip. Alter the number of bits to flip.