[Zope-dev] Examples of non-unique XML node ids?

Hi there, About XMLDocuments: Does anyone has any example scenarios of when a non unique XML node id occurs? It'd be nice if we could rely on the uniqueness of an XML node id, but apparently sometimes they're not. Stupidly enough I can't come up with a scenario that will *cause* a node id to be duplicated, and I wonder if anyone else has a clue. If I can see the scenarios I'll try to hack the XMLDocument source so that each node has an unique id (in a single XML Document) at all time. Regards, Martijn