# File lib/graphviz/node.rb, line 64
64:     def <<( oNode )
65:       if( oNode.class == Array ) 
66:         oNode.each do |no|
67:           self << no
68:         end
69:       else
70:         return GraphViz::commonGraph( oNode, self ).add_edge( self, oNode )
71:       end
72:     end