Examples 216 and 219, the notification of disassociation/association are neither a followup of the example that they show, nor does the collection have a node reference. The attribute "id" is mentioned as being in the associate/disassociate element, when in fact "node" is used.
In short, the example doesn't match the text (nor does it flow with the previous examples), and the receiving entity has no idea which collection node is being updated just based on this notification. Section 9.2 has a similar inconsistency between the "id" attribute being mentioned in the text and the "node" attribute being used in the example, however the lack "node" attribute in the collection attribute is understandable for the root collection. Section 9.7 is not clear whether this item subscription is recursive. Will it update me of collections within collections within collections? Thanks, Nathan Fritz