docs: def options(self, parser, env=os.environ):
          "Add options to nosetests."
          parser.add_option("--%s-record" % self.name,
                            action="store",
                            metavar="FILE",
                            dest="record_filename",
                            help="Record actions to this file.")
          parser.add_option("--%s-playback" % self.name,
                            action="store",
                            metavar="FILE",
                            dest="playback_filename",
                            help="Playback actions from this file.")