[Zope] "roles" argument to validate/ authorize

[Gaute Amundsen]

Can anyone tell me what the argument "roles" to the methods validate and  
authorize is supposed to be? 

This is sort of a followup to the thread about exUserFolder that Andrew Milton 
got stuck answering all on his own (thanks :-), but I have a feeling there is 
a more general explanation...

The reason I ask is that I suspect that a previous developer has done 
something that has made "roles" contain 'Anonymous user' when it should not, 
and that this interferes with the propper functioning of login at our sites.

Among other things we have our own virtual host system, and several products 
including document types, so there is scope for a lot of things to 
interfere... However, while no longer being a newbee at this, I have not yet 
been able, to find a way to unravel where the "roles" argument originate, and 
who could have touched it..

Regards.

Gaute Amundsen