[Zope] User logoff

Hi, it seems like a simple question, but I didn't any mentioning on zope.org. Which function has to be called to log off Zope once you're authorized with the system? I'd like to have a 'logoff' button on my site that allows to log off and i.e. log on as another user from the same browser. BB -- Bodo Bauer bb@bb-zone.com PGP Available http://bb-zone.com C8 1A 71 72 15 21 E2 EF 98 DF EF CF 17 8A DF 48 3C 10 FA 3A