Diagonal/Non-diagonal Grid Filling

[Leroy Quet]

I wrote in part:

>There are several variations, such as:
>1) Instead, odd m's are always diagonal from (m-1),
>even m's are always non-diagonal from (m-1).

Whoops, that is the way I had it originally.

Should be:

1) Instead, EVEN m's are always diagonal from (m-1),
ODD m's are always non-diagonal from (m-1).

thanks,
Leroy Quet