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Category 5 output uses printing characteristics (for example, Fonts, FORMDEFs, and so on) that are defined in external resource libraries. Each page is completely formatted using AFP structured fields, and therefore the output is in page mode (AFPDS). Additional in-line AFP commands (structured fields) can be used, for example, for page-by-page copy grouping.
The external resources can be specified using a number of methods, with the exception of the FORMDEF parameter. The FORMDEF parameter must be specified in an OUTPUT statement in the JCL of the job that creates the output. The rest of the printing characteristics can be specified by the application program in the JCL of the job that creates the output, using dynamic allocation (SVC99). The application program can switch between Copy Groups or Page Formats.
Without Control-D, the in-line structured fields must be inserted by the application program. With Control-D, they can be automatically inserted using the APAPARM option, described in The APAPARM Option.
In data centers that use a relatively small variety of FORMDEFs, it may be advantageous to use the combined FORMDEF method. This method relies on the creation of one global FORMDEF for the requirements of the entire data center. Using the Control-D APAPARM Option, the correct Copy Group is used for each report. For additional details regarding this method, see Using a Global PAGEDEF and FORMDEF.
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