Dan Venolia Apple Computer, Inc. 1 Infinite Loop, m/s 301-3K Cupertino, CA 95014 USA Tel: +1 408 974 4121 Fax: +1 408 862 5520 or Gurminder Singh Institute of Systems Science National University of Singapore Kent Ridge, Singapore 0511 Republic of Singapore Tel: +65 772 3651 Fax: +65 774 4998