The network may have a single rule, or a heterogeneous rule mix. A rule mix can subsequently be set at random from the whole of rule-space (i.e. ``no limit``), or provided there is no neighbourhood mix, a limited subset of rules can be specified from which the random setting is made. The rule mix (or scheme) may be loaded from a ``*.r_s'' file (see filing below).
Provided there is no neighbourhood mix, a top right prompt presents these options,
RULES: single rule (default), load rule mix-l
mix: no limit-n, or set limit up to 200:
The ``single rule'' options are described in #13.6. ``Rule mix'' options are described below.