Robert Houdart wrote: > ...A good reference... > > If you need some help with a concrete example... Thanks for the info and offer! Clear skies -- Michael Lindner http://www.starastronomy.org *** http://home.att.net/~mikel http://www.atmsite.org *** http://www.atmlist.net _______________________________________________ ATM mailing list http://www.atmlist.net/