Usage for printer files (position 38)

Use this position to specify that a named field is an output-only or program-to-system field. Do not make an entry in this position for a constant (unnamed) field.

The valid entries for printer files are:

O or blank: Output only
P: Program-to-system (special output field)

Output-only fields pass data from a program to the printer when the program prints a record.

A program-to-system field is a named, numeric, or alphanumeric output-only field used to pass data between the program and the system. It is not printed. A program can send data to the field with an output operation, but the data is not printed.

The following rules apply to program-to-system fields:

The field is always named.
Locations are not valid.
Length, data type, and decimal positions are specified as for other named fields.
If a program-to-system field is used in the record format, it must be specified as a parameter on a keyword within the same record format.
Program-to-system fields must appear after all data fields.