[Bug 4532] [UPD] Section 2.4.1 and others: clarify impact of element constructor semantics

http://www.w3.org/Bugs/Public/show_bug.cgi?id=4532

           Summary: [UPD] Section 2.4.1 and others: clarify impact of
                    element constructor semantics
           Product: XPath / XQuery / XSLT
           Version: Working drafts
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Keywords: editorial
          Severity: normal
          Priority: P2
         Component: Update Facility
        AssignedTo: andrew.eisenberg@us.ibm.com
        ReportedBy: mrys@microsoft.com
         QAContact: public-qt-comments@w3.org


"SourceExpr is evaluated as though it were an enclosed expression in an element
constructor (see Rule 1e in Section 3.7.1.3 ContentXQ). "
Lot's of semantics hidden behind this sentence. Please provide clearer impact:
SourceNodes get copied, what about impact of copy namespace etc?