[Bug 3070] How does "embedded simplified" work?

http://www.w3.org/Bugs/Public/show_bug.cgi?id=3070

           Summary: How does "embedded simplified" work?
           Product: XPath / XQuery / XSLT
           Version: Candidate Recommendation
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XSLT 2.0
        AssignedTo: mike@saxonica.com
        ReportedBy: scott_boag@us.ibm.com
         QAContact: public-qt-comments@w3.org


We've been having a lot of trouble understanding what the spec means by
"embedded simplified".  There is only one reference to this in
http://www.w3.org/TR/xslt20/#stylesheet-structure, though above that it also
says "A simplified stylesheet module is a tree, or part of a tree".

The spec needs to say exactly what this means.  Surely it doesn't mean any XML
element with an XSLT namespace node?  Or does it mean xsl: namespaced elements
only?  If so, what is the context node?  The containing XML element or the
document element?  I think normally for an embedded stylesheet, the context
node is the document node, but we're having trouble finding where that's
specified!

I suggest a) that we get rid of the concept of "embedded simplified", and b)
specify precisely what the context node is in the case of an embedded
stylesheet.