External labels are not required in the CA 1 environment. A legitimate need for them exists, however, if tapes are to be sent off-site for subsequent processing.
CA 1 has a feature that facilitates the printing of external tape labels on a dedicated printer, console, or WTO route code. External label requests from all sources in CA 1 are routed to the Online Label Interface for printing. This can be done from a single CPU or from multiple CPUs.
There are five methods for tape label generation:
A stand-alone program that runs as a started task or batch job and produces labels. An exit is available that allows labels to be selectively generated based on the data set name, job name, and so forth.
Note: For information on the TMSLBLPR utility, see the Utilities and Reports Reference Guide.
CA 1 system option LAB allows labels to be produced at OPEN for all output tapes.
Two different uses of Auxiliary Disposition that can either generate a label at volume CLOSE or EOV, or, when executed as a separate step, generate labels for system cataloged data sets and optionally uncatalog them.
Labels can be generated on demand through the CA 1 online interfaces (ISPF and TIQ.)
Labels can be generated on demand by sending a direct request to the Online Label Interface (LAB) subtask of CTS using the appropriate commands.
The format of the external label requests can be tailored to site specifications. An example of a suitable device for printing labels would be an IBM 3287 or equivalent device.
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