> It's my personal feeling that the inability to provide defaults for ID,
> IDREF(S), and ENTITY(IES) attributes is a bug (in SGML unavoidably
> inherited by XML).
There is no evidence for the presence of such a constraint in XML;
the relevant clause (3.3.2) is silent. Clause 3.3.1 does require
that ID attributes have a default of either #IMPLIED or #REQUIRED,
but no restrictions are placed on IDREF, IDREFS, ENTITY, or ENTITIES,
so they may have default values in XML.
-- John Cowan http://www.ccil.org/~cowan cowan@ccil.org You tollerday donsk? N. You tolkatiff scowegian? Nn. You spigotty anglease? Nnn. You phonio saxo? Nnnn. Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)