 
 
 
 
 
 
 
  
The following function
 DarwUnrootedTree(t : Tree, title : string)
generates the unrooted binary tree specified by the Tree
structure t.  Figure ![[*]](cross_ref_motif.gif) contains the unrooted version
of the tree from Figure
 contains the unrooted version
of the tree from Figure ![[*]](cross_ref_motif.gif) . There trees are also referred
to as  circular divergence trees.
. There trees are also referred
to as  circular divergence trees.
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