>One good reason for using .tdx for on the fly indexes is so at cleanup you can delete all the *.tdx files without worrying if it's a real index.

Thanks David,
It's nice to know there's a modicum of reasoning there.

Another quickie:
This programmer used a lot of UDF's and evaluations.
eg. = prog()

This makes me wonder:
Which is better to use; '=' or 'DO'? Why?

TIA
Pete