Use the variable access routine (IKJCT441) in your programs to update, create, and return the values of CLIST and REXX variables when running in a TSO/E environment. TSO/E also provides the REXX variable access routine (IRXEXCOM) that lets unauthorized programs and commands access REXX variables from a REXX Language Processor Environment running in any MVS™ address space. For more information about using IKJCT441, see Using the variable access routine IKJCT441. For more information about using IRXEXCOM, see z/OS TSO/E REXX Reference.