3 # This file is part of NIT ( http://www.nitlanguage.org ).
4 # This program is public domain
6 # Task: Visualize a tree
7 # SEE: <http://rosettacode.org/wiki/Visualize a tree>
8 module visualize_a_tree
10 # The library `ordered_tree` offers basic visualization services for trees.
13 var tree
= new OrderedTree[String]