No! The Explain service will say waht prefix is expected! Ralph -----Original Message----- From: Ray Denenberg [mailto:[log in to unmask]] Sent: Tuesday, April 30, 2002 1:22 PM To: [log in to unmask] Subject: cql prefixes "LeVan,Ralph" wrote: > But what if I said that my prefix for the DC IndexSet was Bob, because I had > an IndexSet named Deep Custard that I wanted to give the prefix DC? How about if we register prefixes? I'll be quite happy to do it if that will help. we could start with: DC: Dublin Core DCU: Deep Custard --Ray