Membership in a group is defined, either manually or by rule. Items are distributed to the members of the group as the items are associated with the group. When a container hierarchy changes (by adding, removing, or changing the properties of an object), the object is checked to see if the change affects...http://www.google.de/patents/US7236977?utm_source=gb-gplus-sharePatent US7236977 - Method for dynamically distributing items for changes based on group membership
