I have opened two issues on the Darwin Core Google Code issues tracker. Issue 135 (http://code.google.com/p/darwincore/issues/detail?id=135) involves the technical definition of dwc:ResourceRelationship. Issue 136 (http://code.google.com/p/darwincore/issues/detail?id=136) involves the lack of clarity of the identity of the Darwin Core normative (Type 1) documents. Steve Baskauf -- Steven J. Baskauf, Ph.D., Senior Lecturer Vanderbilt University Dept. of Biological Sciences postal mail address: VU Station B 351634 Nashville, TN 37235-1634, U.S.A. delivery address: 2125 Stevenson Center 1161 21st Ave., S. Nashville, TN 37235 office: 2128 Stevenson Center phone: (615) 343-4582, fax: (615) 343-6707 http://bioimages.vanderbilt.edu