supported datatypes in OWL 2

Hello,

I was reading in section 4.2.2 of the OWL 2 specification [1] that the
language supports the datatypes xsd:ID, xsd:IDREF, and xsd:ENTITY. This
seems to imply that all implementers of the language need to implement
these datatypes.
However, it seems to me that these datatypes only makes sense in the
context of an XML document, not in the context of ontology.  So, I was
wondering why OWL 2 supports them.


Then I spotted what I think is a typo in the profiles document [2].  In
the sections 2.2.1, 3.2.1, and 4.2.1 it is stated that "the intersection
of the value spaces of any set of these datatypes is finite".  I assume
that should read "infinite".


Best, Jos

[1] http://www.w3.org/2007/OWL/wiki/Syntax#Strings_without_a_Language_Tag
[2] http://www.w3.org/2007/OWL/wiki/Profiles
-- 
Jos de Bruijn            debruijn@inf.unibz.it
+390471016224         http://www.debruijn.net/
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