-- Michael Ayers mbayers@mmm.com (612) 733-5690 FAX (612) 737-7718 3M Center Bldg 224-2NE-02 PO Box 33224 St Paul MN 55133-3224All ideas expressed in this note represent the author's thinking and do not represent the positions of any organizations -- or -- I take credit for the implications, you do for the inferences!