Non-TSO/E address spaces
TSO/E provides two programming routines that you can use to run REXX execs, IRXJCL and IRXEXEC.
You can execute a REXX exec in MVS™ batch by specifying IRXJCL as the program (PGM=) on the JCL EXEC statement.
You can call either IRXJCL or IRXEXEC from a program to execute a REXX exec. You can use the IRXJCL and IRXEXEC routines in any address space. describes IRXEXEC and IRXJCL.