Use linkage type PLI in the third argument to CallProg expression to link to a PL/I language program.
PL/I language programs can be used on z/OS. Use a C interface layer to call PL/I programs on Windows and UNIX. Use linkage type OS400 to call PL/I programs on i5/OS.
Compile PL/I programs by using the Language Environment (LE) PL/I run-time routines. Results are unpredictable for PL/I programs compiled with non-LE PL/I run-time routines.