__getstate__ documentation (was: Re: [Zope] Python products - Versions in Zope)

Edward Muller writes:

Can anyone tell me where __getstate__ is documented? In the Python Library Reference (--> http://www.python.org), documentation of the module "pickle".

When I looked it up, I recognized that you would use "__setstate__" and not "__getstate__" to instantiate new members. Dieter