Where were the new instance variables in NSView.h copied from? I've been comparing them to class-dumps ( http://code.google.com/p/iphone-dev/source/browse/#svn/trunk... ) of Apple's code and I don't see anything like what you are describing. Care to show some examples?
That line (and the one later for previousLocationInView:) is straightforward "class-dump output". Did you bother to look at the file? :(