Hi wally, Don't load up good ole Harry with any more problems like women's menstruation cycles. He is still busy working on his little Pi versus 1 / Pi "theorem" that he contributed to his mysticism thread. This is a sticky one for Harry. (C'est une colle!) In the big pile of stuff he unloaded on ET threads over the years, the Pi-gem is the only one we we can readily verify. nononsense