Provides mechanisms for establishing and navigating relationships to superior and subordinate domains, as well as for creating and accessing policies.

  Provides mechanisms for establishing and navigating relationships to
superior and subordinate domains, as well as for creating and accessing
policies. The DomainManager has associated with it the policy
objects for a
particular domain. The domain manager also records the membership of
the domain and provides the means to add and remove members. The domain
manager is itself a member of a domain, possibly the domain it manages.
The domain manager provides mechanisms for establishing and navigating
relationships to superior and subordinate domains and
creating and accessing policies.