Subparameter definition

EOV: Requests that when reading a multivolume data set, the system finish reading the current volume and then dequeue the volume serial number and demount the volume. This makes the volume immediately available to another job in another system. An attempt by the same task to reprocess the volume using the same JCL DD statement will result in an abnormal end.
END: Requests that volumes be dequeued at the end of the job step.