NEW ISSUE: What does the MEX dialect de

In Section 5, which discusses the metadata section there is an 
explanation of the mex dialect.

/mex:Metadata/mex:MetadataSection/@Dialect 
="http://www.w3.org/2009/02/ws-mex"

    This value indicates the type of the metadata contained within the
    Metadata Section. When used in conjunction with Metadata Reference
    or Location, this allows the inclusion of metadata by reference.

This is a bit cryptic.  I realize it covers the case where the content 
is a reference to a metadata section and the refered-to section contains 
the specific dialect.  A recommend adding a few words to clarify
-- 
All the best, Ashok