array-reconfigure-rows
array-reconfigure-rows is an interactive compiled Lisp function in `array.el
'.
(array-reconfigure-rows NEW-COLUMNS-PER-LINE NEW-ROWS-NUMBERED)
Reconfigure the state of `array-rows-numbered' and `array-columns-per-line'.
NEW-COLUMNS-PER-LINE is the desired value of `array-columns-per-line' and
NEW-ROWS-NUMBERED (a character, either ?y or ?n) is the desired value
of `array-rows-numbered'.