[Zope] my further playing with UserDb...

[Anthony Baxter]

Ok, some more discoveries, that really should have been obvious
to me: if you want a UserDb to work, it's got to be in a folder
where Anonymous can view stuff, and execute SQL methods.

Is there a list of what the different security settings allow?
What's the difference between 'View' and 'Access Contents Information'?
What is needed to allow someone access to a subfolder, but not to
the top folder?

Anthony