| Long description for sample document tree diagramThis diagram illustrates a sample document tree.
  The root node (HTML) is at the top. It has two children: HEAD and
BODY. HEAD has one child: TITLE. BODY has three children: H1, P, and
UL. The UL has 3 LI leaf nodes.
 In outline form, one . indenting for each level, that gives:
 
HTML
.HEAD    
..TITLE
.BODY
..H1
..P
..UL
...LI
...LI
...LI
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