code: def default_start():
      
      (config, daemon, pidfile, startup, fork) = parsearg()
      if config is None:
          if os.path.isfile('/etc/vlcp.conf'):
              config = '/etc/vlcp.conf'
          else:
              print('/etc/vlcp.conf is not found; start without configurations.')
      elif not config:
          config = None
      main(config, startup, daemon, pidfile, fork)
docs: Use `sys.argv` for starting parameters. This is the entry-point of `vlcp-start`