Input a length for the grid:
(input: bind $length)
Input letter(s) or number(s) for the grid to repeat:
(input: bind $letter)
(link:"Enter")[(goto:"grid")](set:$length to (num:$length))(if:$length is 0)[Enter a valid number.](else:)[(str-repeated:$length, (str-repeated:$length,"$letter")+"\n")]