# File lib/graphviz/attrs.rb, line 40
40:     def []=( xKey, xValue )
41:       if @attributs.index( xKey.to_s ).nil? == true
42:         raise ArgumentError, "#{@name} attribut '#{xKey.to_s}' invalid"
43:       end
44:       @data[xKey.to_s] = xValue
45: 
46:       if @graphviz.nil? == false
47:         @graphviz.set_position( @name, xKey.to_s, xValue )
48:       end
49:     end