-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 This isn't really an answer, but it's a different way of stating the constraint, in terms of an invariant that it guarantees: the signature of an EII or AII determines its type where by 'signature' I mean the path from the root. ht - -- Henry S. Thompson, School of Informatics, University of Edinburgh Half-time member of W3C Team 10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440 Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk URL: http://www.ltg.ed.ac.uk/~ht/ [mail really from me _always_ has this .sig -- mail without it is forged spam] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFIY9lvkjnJixAXWBoRAglOAJ9zQj3pO1G78VtLx/mOSK2vEka5tgCgg1bD N3eAlMIrqLC2El1zymDXl1Q= =n2Mq -----END PGP SIGNATURE-----Received on Thursday, 26 June 2008 18:02:10 GMT
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