# File lib/clamp/help.rb, line 40
    def help(invocation_path, builder = Builder.new)
      help = builder
      help.add_usage(invocation_path, usage_descriptions)
      help.add_description(description)
      if has_parameters?
        help.add_list(Clamp.message(:parameters_heading), parameters)
      end
      if has_subcommands?
        help.add_list(Clamp.message(:subcommands_heading), recognised_subcommands)
      end
      help.add_list(Clamp.message(:options_heading), recognised_options)
      help.string
    end