I agree this is interesting. Another option is an annotation mechanism with unbreakable bidirectional links -- ID markers work for this. You can stick the markers anywhere.
If the thing to be annotated is read-only, I have other ideas. Samuel -- The Kafka Pandemic: http://thekafkapandemic.blogspot.com/2010/12/welcome-to-kafka-pandemic-two-forces_9182.html I support the Whittemore-Peterson Institute (WPI) === I want to see the original (pre-hold) Lo et al. 2010 NIH/FDA/Harvard MRV paper.
