I have a range that is a single row A1..Z1. I need to loop through this
range interrogating every cell in this range and if true, then write a number
in the corresponding cell in a similarly sized array (A3..Z3). I think I
know how to do this, but then I need to move the destination down one row
(A4..Z4) and repeat. I need to drop down a row 18 times.

So I need a nested loop, but I don't know how to increment the destination
in the outer loop.

noob