[Bug 4030] [F+O] "may not" ambiguity

http://www.w3.org/Bugs/Public/show_bug.cgi?id=4030

           Summary: [F+O] "may not" ambiguity
           Product: XPath / XQuery / XSLT
           Version: Candidate Recommendation
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Functions and Operators
        AssignedTo: ashok.malhotra@oracle.com
        ReportedBy: mike@saxonica.com
         QAContact: public-qt-comments@w3.org


In the Note in 7.3.1 (concat), it's unclear what the phrase "the result of
fn:concat may not be normalized" means. Does it mean that the processor might
not normalize the value, or that it must not normalize the value?

It's also unclear what the start of the sentence "As mentioned in the note
above" is referring to.