<<< Why don't we count? Befuddled Meridian Christianna >>> Uh, I don't know. While not a tutorial, perhaps this file in the EDUCATION section of the Florilegium might help: Art-of-Arith-art (7K) 4/ 3/00 "The Noble Art of Arithmetic" by Jan van Seist. :-) uh, Stefan (who else?)