What happens if a user who has only read-permission for branch A writes
something to branch B? As far as I see this is possible as
write-permissions are per database and not per branch. If branch B is only
for privileged users is it still protected? I'd say so as the new user
can't link his certificate into existing revisions in branch B. Is this
correct? But does everyone with read-permission to branch B see now two
heads?