MM wrote in http://go-oo.org/~michael/OOoStartup.pdf: "... not one slot was overridden by an implementation method external to the implementing library."
Hmm. For some reason that reminds me of the 'final' keyword which is periodically proposed (e.g. http://gcc.gnu.org/ml/gcc/2004-02/msg01483.html). Is this a situation where 'final' would have a benefit?
