What a fortuitous coincidence! I too was on the verge of writing the exact
same query about using <xref> in XML that François Lachance just
sent -- but I thought I was missing something too obvious to address to
the discussion list. I get the exact same error messages when I try to
reference an ID in another documents using <xref>. Good to know that I am
not alone. Apparently this is an urgent query for many of us.
Robert Boyle Project