Agreed, this would be a nice addition.
I had just been considering submitting a similar feature request: a permalink to the formatted HTML version of the annotations file. Sometimes it would be helpful to be able to insert a link to my annotations from Google Docs.
(Also, what about a Snapshot tool, where the user can drag a box around a figure or table and have that embedded as an image in the annotations file? I often find myself wanting to be able to do this.)