[opencms-dev] cms object: logout user, session

[martin koeck]

how can I log-out a previously loged-in user from the cms object ?
what I do now is something like to log in the guest-user hardcoded ...

...
cms.loginUser( "Guest", "guest" );

and, does it make sense to store the CmsUser object to the session ?
I mean I can access it via cms object anyway from any page ... as long 
as I am in the same session

TIA
--
Martin