Hi Romano, et al << Mine is only an idea, i'm not sure this is the true reason, but a none value can be used directly in expression like:
if ref [...] either ref [][] An unset value would generate an error in these cases. >> That's exactly what I was thinking. I have no clue about the inner workings, but I can say, from my persepctive, that I wouldn't want to use unset? to check for refinements. The current approach makes for very readable code IMO. --Gregg -- To unsubscribe from this list, please send an email to [EMAIL PROTECTED] with "unsubscribe" in the subject, without the quotes.