Modifying output fields

The technique described in Modifying input fields is not suitable for modifying output fields. (The results would be returned to the new area instead of the application’s area, and would be invisible to the application.)

An output field is modified by altering the data that is pointed to by the command-level parameter list. In the case of an output field, you can modify the application’s data in place, because the application is expecting the field to be modified.