Authorities
acs-authentication can have multiple authorities, each one -represent an specific configuration of authenticatication. For +represent a specific configuration of authenticatication. For instance, in your openacs installation you can have users related to different authorities, some of them might authenticate locally since they are external or invited, others belongs to your corporate network and already have users, so might authenticate against LDAP and others in your own work office might use PAM for authentication because your local system authentication. Plus you -might define an specific implementation (using the set of SC) to +might define a specific implementation (using the set of SC) to connect to your client DB, which is in another DB, and allow your clients login to certain parts of your website. Then, this is right way to handle all those set of users, that already might have an