Hi all, Do many people use "OAI set mappings"? I was feeling a bit frustrated because there's no obvious way to group rules using the Boolean AND/OR rules. I wanted a rule like the following but there was no clear mechanism to add those groupings. (952$a eq BRANCH) && ( (952$c eq GEN) || (952$c eq AV) ) After some trial and error, I realized you have to do the following: (952$a eq BRANCH && 952$c eq GEN) || (952$a eq BRANCH && 952$c eq AV) -- The OR rule seems to just bind together single rules or rules joined together with AND. I mean it's workable but it was a bit confusing and I don't think the documentation makes that clear. What do you folk think? David Cook Senior Software Engineer Prosentient Systems Suite 7.03 6a Glen St Milsons Point NSW 2061 Australia Office: 02 9212 0899 Online: 02 8005 0595