From Gnash Project Wiki

Object

All tests we have pass on this now. Anyway, we'll probably
need to add more tests for the inheritance model.
I'll make some tests tomorrow with the .__proto__
and .prototype members 
--strk 2006-02-05

• method _Object.registerClass

 This should be easy to implement, just have movie_definition.h provide
 setAssociatedClass(as_function* as)/getAssociatedClass() methods and
 use them from within sprite_instance constructor.

NEWS: experimental implementation is now available. Lacks a testcase. --Strk 15:43, 11 January 2007 (EST);