# File /home/cepheus/projects/prep/log4r-1.0.0/src/log4r/configurator.rb, line 58
      def custom_levels(*levels)
        return Logger.root if levels.size == 0
        for i in 0...levels.size
          name = levels[i].to_s
          if name =~ /\/ or name !~ /^[A-Z]/
            raise TypeError, "#{name} is not a valid Ruby Constant name", caller
          end
        end
        Log4r.define_levels *levels
      end