The current bit to be updated is highlighted by a small green flashing cursor, which is moved with arrow keys. The left/right/up/down arrow keys are use to displace the cursor. The up/down arrow keys only apply for rules where k>=7, where the bits are presented in 2, 4 or 8 rows. Hit keys ys ``1`` and ``0'' (without ``return``) to set or delete bits. This automatically moves the cursor one position right (the keyboard cursor is moved when bits are set with the mouse, as well as with the arrow keys).
The rule can be rotated as in #13.10. To accept the rule table bit pattern, enter ``return``. When selected, the rule is also displayed in decimal (for n<=5) and in hex, and in the rule window.