de> by name or id. 
    <ul>
      <li>If there is a <code>link in</code> nodes with the same id, it will be called</li>
      <li>If there are two or more <code>link in</code> nodes with the same name, an error will be raised</li>
      <li>A <code>link call</code> cannot call a <code>link in</code> node inside a subflow</li>
    </ul>
    </p>
    The flow connected to that node must end with a <code>link out</code> node configured
    in 'return' mode.</p>
</script>
