Tim Berners-Lee Director, W3 Consortium MIT Laboratory for Computer Science 545 Technology Square Cambridge, MA 02139, U.S.A. Phone: +1 (617) 253 9670 Fax: +1 (617) 258 8682 EMail: timbl@w3.org Daniel W. Connolly Research Technical Staff, W3 Consortium MIT Laboratory for Computer Science 545 Technology Square Cambridge, MA 02139, U.S.A. Phone: +1 (617) 258 8682 EMail: connolly@w3.org URI: http://www.w3.org/hypertext/WWW/People/Connolly/