IBM SC34-6814-04 - Manual (Page 336)

in the first 4 bytes of the LIFO storage addressed by UEPXSTOR. In this example,
the initialization of the parameter list (using the CLEAR option), the building of the
parameter list, and the GETMAIN call occur in a single macro. For details of how to
build the parameter list incrementally, and how to separate the CLEAR and the
GETMAIN call, refer to “An example showing how to build a parameter list
incrementally” on page 318.
314 Customization Guide