ELEMENT REFINEMENT inference rule

I don't understand the ELEMENT REFINEMENT inference rule in section 6.1.
Specifically, I don't understand the judgement "d in e": "in" is a relation
between forests and *groups*, but "e" ranges over element names.  I have a
similar problem with the WILDCARD inference rule.

Received on Friday, 27 April 2001 02:41:20 UTC