Atlas - UpdatePanel - ControlEventTrigger

I was just working with the UpdatePanel in Atlas.  I was thinking that it would be nice if there was some type of IDE support the UpdatePanel and the EventTriggers.  Well, there is.  Check out this little jewel.  When you click on <control>, you get a list of the current controls on the page.  Very nice.  When you click on the event, you get a list of events.  Very nice indeed.