Target of <instance_node> element

Hi all,

I have a question about the target of the <instance_node> element which is specified in the URL attribute:
Must this URL refer to a <node> element in <library_nodes> or is also a <node> in the node hierarchy within the <visual_scene> element possible?

Best Regards

Since it is a URL, it could be anywhere the URL can reference, including an external source (other file or http request).
Be careful not too create infinite loops !

<library_nodes> is optional.

Thanks Remi!

The possibility of an infinite loop was exactly what concerned me.