If ``h'' is selected in #15.1, the hex expression of the current seed (which may first be reset to all 0s or all 1s) is displayed. The hex digit at the green flashing cursor can be overwritten from the keyboard; and the cursor will automatically move to the next digit. The left/right (and up/down) arrow keys are use to displace the cursor. The up/down arrow keys apply for seeds where n>=256, where the hex digits are presented in successive rows.
The seed can be rotated as in #15.3. To accept the seed bit pattern, enter ``return``. During the bit setting procedure a top right reminder displays the following, depending on whether the network is 1d or 2d.
enter hex, arrows-move
rotate-l/r, accept-ret (for 1d, ``rotate-l/r/u/d`` for 2d)
To rotate enter ``l``, ``r``, ``u`` or ``d``. Once selected in hex, the rule is also displayed in decimal (for n<=5) and as the rule table bit pattern, broken into byte size chunks.