All, When refering to the core model class hierarchy I am referring to this diagram... https://forge.gridforum.org/sf/docman/do/downloadDocument/projects.rm-wg /docman.root.discussion_documents/doc14627 Regards Paul -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.ogf.org/pipermail/rm-wg/attachments/20070928/e96b958b/attachment.html