I was just going though the DnD code in the Book and came across a Dojo function I didn't know about and was about to look it up then thought that it would be really cool if a little summary (or even a big one) from the API documentation would appear if I kept my mouse over the function name in the code insert. Would be handy in the API doc as well and with Drupal not such a biggy to make happen really.

Just a thought ;)