graphviz_test, a Python code which calls graphiviz(), which displays representations of graphs.
The graphviz() and pydotplus() packages must be installed in order for these programs to work.
The computer code and data files made available on this web page are distributed under the GNU LGPL license.
alphabet_binary_tree describes a binary tree that could be used to alphabetize letters.
network_graph describes a graph as a set of edges, defined by pairs of nodes.
web_digraph displays a set of directed connections as a digraph.