If ``r'' is selected in #13.6, a series of random rules are displayed in decimal (for n<=5), in hex, and as the rule table bit pattern. A rule can be accepted or further alternative random rules may be generated indefinitely.
For each alternative rule, a top right window gives lambda and Z parameter details. The rule table can also be ``rotated'' to the left or right as if it were a periodic 1d state. The following prompt is displayed,
(rotate-l/r, another-n, backtrack-q, accept-ret)
``n'' gives another random rule, ``l`` and ``r'' rotate the rule table left and right. To accept the random rule enter ``return``. When selected, the rule is displayed the rule window.