# File lib/graphviz/node.rb, line 84
    def []( xAttrName )
      if Hash === xAttrName
        xAttrName.each do |key, value|
          self[key] = value
        end
      else
        (@oAttrNode[xAttrName.to_s].nil?)?nil:@oAttrNode[xAttrName.to_s].clone
      end
    end