>>Thanks. That's how I read it in Help but didn't think it meant you had top have ALL non-agg fields. Is this new to 8/9 cos I don't recall having to do this in the past - I thought only the fields you wanted,say, a printing group header break on?
>
>IIRC this was introduced in version 9.

VFP8. It's documented in SET ENGINEBEHAVIOR help.