<document title="red"  
         canvas="yellow">  
<section>  
  <title>First  
     section</title>  
  <sentence>Some  
     text.</sentence>  
  <sentence>More  
     text.</sentence>  
</section>  
<section>  
  <title>Second  
     section</title>  
  <sentence>Another  
     text.</sentence>  
  <sentence>Yet  
     more text.</sentence>  
</section>  
</document>

root  
  |  
  +-document  
     |  
     +-section  
     |  |  
     |  +-title  
     |  |   |  
     |  |   +-- First section  
     |  |  
     |  +-sentence  
     |  |   |  
     |  |   +-- Some text.  
     |  |  
     |  +-sentence  
     |      |  
     |      +-- More text.  
     |  
     +-section  
        |  
        +-title  
        |   |  
        |   +-- Second section  
        |  
        +-sentence  
        |   |  
        |   +-- Another text.  
        |  
        +-sentence  
            |  
            +-- Yet more text.