This is probably akin to turning a supertanker around 180 degrees, but I'll try anyway. I've never liked Perl's use of the terminology 'num' to mean a floating-point value. Is there any chance in Perl 6 of using something else, eg 'float' or 'real'? Its just that a 'number' doesnt have any connotations of anything in particular (other than it being a numberic value!), and it is not immediately apparent (to a newcomer at least) that an NV is the 'opposite' of an IV. Given the weight of history, if at least one experienced perl developer says no, I'll assume this thread to have been rightly killed off, and is not worth any further dicussion. Dave 'I love betamax' M.