So, was there ever any consensus on set operations? In particular, have we agreed on a way to do either set XOR or set difference, because if not, we don't have a complete set of set operations, and that would suck. -Robin -- http://www.csclub.uwaterloo.ca/~rlpowell/ BTW, I'm male, honest. Information wants to be free. Too bad most of it is crap. --RLP