docs: def cmd(send, msg, args):
      """Gets a stock quote.
  
      Syntax: {command} [symbol]
      Powered by markit on demand (http://dev.markitondemand.com)
  
      """
      parser = arguments.ArgParser(args['config'])
      parser.add_argument('stock', nargs='?', default=random_stock())
      try:
          cmdargs = parser.parse_args(msg)
      except arguments.ArgumentException as e:
          send(str(e))
          return
      send(gen_stock(cmdargs.stock))