File: sample55.rb

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ruby-graphviz 1.2.5-3
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$:.unshift( "../lib" )
require 'graphviz'

puts GraphViz.graph( :G ) { |g|
  g[:label] = "<<b>This</b> is <i>a</i> <b>test</b>>"
  n1 = g.add_nodes( "N1", :label => '<<b>node 1</b>>')
  n2 = g.add_nodes( "N2", :label => '<<b>node 2</b>>')
  g.add_edges( n1, n2, :label => '<<u>edge</u>>')
}.output( :png => "#{$0}.png", :none => String )