Originally raised in http://lists.w3.org/Archives/Member/w3c-xml-schema-wg/2006Aug/0016.html by Kohsuke Kawaguchi <Kohsuke.Kawaguchi@Sun.COM>

- I'm confused with predicate. For example, when I read "4.2.3 element
   declaration", it says "prefix:name[n] where the [n] will be absent
   if the {scope} of the element declaration is global and may be
   absent if the value of n is 1"

   That seems to imply that if I write: "/~my:type//my:element", then
   this is treated identical as "/~my:type//my:element[1]", thus it
   would actually only match the first such element declaration below,
   and not both of them.

   <complexType name="type">
     <sequence>
       <!-- two elements of the same name -->
       <element name="element" ... />
       <element name="element" ... />

   This goes against my intuition.

   Also, while it's reasonable to assume that the predicate is 1-origin
   after spending some time with this spec, I failed to find the
   explicit statement about whether predicate is 0-origin or 1-origin.