|Description||string||A PolicyRule aggregates zero or more instances of the PolicyAction class, via the PolicyActionInPolicyRule association. A Rule that aggregates zero Actions is not valid--it may, however, be in the process of being entered into a PolicyRepository or being defined for a System. Alternately, the actions of the policy may be explicit in the definition of the PolicyRule. Note that a PolicyRule should have no effect until it is valid.
The Actions associated with a PolicyRule may be given a required order, a recommended order, or no order at all. For Actions represented as separate objects, the PolicyActionInPolicyRule aggregation can be used to express an order.
This aggregation does not indicate whether a specified action order is required, recommended, or of no significance; the property SequencedActions in the aggregating instance of PolicyRule provides this indication.