[xsl] xpath question, getting last instance of element

[Alan Stein <as2@xxxxxxxxxxx>]

Hi,
I'm trying to figure out how to select the final instance of "DDD" in the 
following example, but since the predicate refers to the element's relative 
position to its neighbors, I am having trouble formulating an xpath which 
would take the last position with respect to the root of the document.

Can someone shed light on this (possibly simple) question?  Thanks in advance.
  --Alan


     <AAA>
          <BBB>
               <CCC/>
               <ZZZ>
                    <DDD/>
                    <DDD>
                         <EEE/>
                    </DDD>
               </ZZZ>
               <FFF>
                    <GGG/>
               </FFF>
          </BBB>
          <XXX>
               <DDD>
                    <EEE/>
                    <DDD/>
                    <CCC/>
                    <FFF/>
                    <FFF>
                         <GGG/>
                    </FFF>
               </DDD>
          </XXX>
          <CCC>
               <DDD/>           < this is the one I want />
          </CCC>
     </AAA> 


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