specifies whether the cluster can be opened again and again as a reusable cluster.
specifies that the cluster can be opened again and again as a reusable cluster. When a reusable cluster is opened, its high-used RBA is set to zero if you open it with an access control block that specifies the RESET attribute.
REUSE allows you to create an entry-sequenced, key-sequenced, or relative record work file.
When you create a reusable cluster, you cannot build an alternate index to support it. Also, you cannot create a reusable cluster with key ranges (see the KEYRANGE parameter) or with its own data space (see the UNIQUE parameter). Reusable data sets may be multivolume and are restricted to 16 physical extents per volume.