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The basic XPath syntax is similar to filesystem addressing. If the path starts with the slash / , then it represents an absolute path to the required element.
 
/AAA
Select the root element AAA

     <AAA>
          <BBB/>
          <CCC/>
          <BBB/>
          <BBB/>
          <DDD>
               <BBB/>
          </DDD>
          <CCC/>
     </AAA>
Open the example in XLab. | Tree view (JPG)
 
/AAA/CCC
Select all elements CCC which are children of the root element AAA

     <AAA>
          <BBB/>
          <CCC/>
          <BBB/>
          <BBB/>
          <DDD>
               <BBB/>
          </DDD>
          <CCC/>
     </AAA>
Open the example in XLab. | Tree view (JPG)
 
/AAA/DDD/BBB
Select all elements BBB which are children of DDD which are children of the root element AAA

     <AAA>
          <BBB/>
          <CCC/>
          <BBB/>
          <BBB/>
          <DDD>
               <BBB/>
          </DDD>
          <CCC/>
     </AAA>
Open the example in XLab. | Tree view (JPG)



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