Mike Fletcher wrote: > > Something like > string.join(hyperCollapse( data)) > > Should be fairly fast and general. If it would work. What has to supplied as allowedmap? hyperCollapse requires 2 parameters. Peter -- Peter Schneider-Kamp ++47-7388-7331 Herman Krags veg 51-11 mailto:peter at schneider-kamp.de N-7050 Trondheim http://schneider-kamp.de