Protecting REFR programs

Use the SETPROG REFRPROT command anytime after IPL to specify that REFR programs should be protected from modification. The complete syntax for the SETPROG REFRPROT command is:
 
SETPROG REFRPROT
Use the SETPROG NOREFRPROT command anytime after IPL to specify that REFR programs should not be protected. The complete syntax for the SETPROG NOREFRPROT command is:
 
SETPROG NOREFRPROT

For more information on protection of REFR programs, see z/OS MVS Program Management: User's Guide and Reference.