https://www.youtube.com/watch?v=2yxrawVF0Oc&spfreload=1 having read the paper, the presentation is a great follow up. Charles *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html