text: #!/usr/bin/env python
  """
  An example showing how to use the interface to the pygraphviz
  AGraph class to draw a graph.
  
  Also see the pygraphviz documentation and examples at
  http://pygraphviz.github.io/
  
  
  """
  __author__ = """Aric Hagberg (hagberg@lanl.gov)"""
  #    Copyright (C) 2006 by 
  #    Aric Hagberg <hagberg@lanl.gov>
  #    Dan Schult <dschult@colgate.edu>
  #    Pieter Swart <swart@lanl.gov>
  #    All rights reserved.
  #    BSD license.
  
  from networkx import *
  
  # plain graph
  
  G=complete_graph(5)   # start with K5 in networkx
  A=to_agraph(G)        # convert to a graphviz graph
  A.layout()            # neato layout
  A.draw("k5.ps")       # write postscript in k5.ps with neato layout
  
  