# File lib/loquacious/undefined.rb, line 43
      def warn( key )
        if @first_time
          @io.puts "---------------------------------------------------------------------------\nThe Loquacious configuration system has detected that one or moe\nsettings have an undefined value. An attempt is being made to reference\nsub-properties of these undefined settings. Messages will follow containing\ninformation about the undefined properties.\n---------------------------------------------------------------------------\n"
          @first_time = false
        end

        @io.puts "Access to undefined value #{key.first.inspect}: #{key.join('.')}"
      end