Some objects rather than having a child object, refer to other objects in the universe. In particular the AlSetMember and AlClusterMember classes refer to objects which are components of the set or cluster respectively.

Here we have a cluster DAG node, its cluster object and cluster members. To create this structure, instantiate and create an AlCluster object. It is not possible to create or delete individual AlClusterMember objects. Instead, they are created or deleted when objects are added to or removed from the cluster.