Tabbed MDI interface and Bookmark feature request

I'd like to request an MDI interface. Usually, when working with reflector, I'm tracing some execution path and need to jump back and forth between methods. It would be nice to have several views open at the same time. Having a nice tabbed MDI would make this a lot easier.

I'd also like to request a bookmark feature. This would make it easy to jump to places in the tree list.

thanks,
~ Paul