The optional keyword OUTPUT is used to append XML fragments.
If no OUTPUT keyword is present, then the value *NEW is used.
The OUTPUT keyword value *ADD directs the service to append the created XML fragment to the end of the previously created XML fragment of the same storage name. If no previous storage exists, then a new one is created.
The OUTPUT keyword value *NEW directs the service to create a new fragment storage if one does not exist or replace an existing fragment stored under the specified fragment name.