[Zope] __ac_name and __ac_password

Hi, I notised that the www.zope.org site uses the properties __ac_name and __ac_password for form-based userauthentication. After not finding anything like that in my Zope 2.0.1 installation I assumed its part of the Portal Toolkit Member function? Can anyone confirm that? And when may we see the Member function released? Best Regards, Johan Carlsson torped johan carlsson birkagatan 9 113 36 stockholm telefon 08-32 31 23 mobil 070-558 25 24 fax 08-32 89 47 johanc@torped.se