>What would be the difference in using DO WHILE vs SCAN WHILE...?
>Is there a performance issue?
>
>Thanks in advance, M.
My preference is for SCAN. In addition to what has been said, I think it is slightly cleaner especially if you have both a WHILE and FOR clause.

One thing to be aware of, however. Nested SCANs do not work as expected because of the extra SKIP at the second ENDSCAN.