z/OS® delivers some functions from the z/OS Download Web site (http://www.ibm.com/systems/z/os/zos/downloads/). z/OS Web deliverables can be identified by the references to supported z/OS releases in their titles or in their functional descriptions. These Web packages contain only the base function, that is, service is not included in the Web download. Service is included in your regular preventive service deliverable for z/OS automatically.