User exit REXX commands

Z Abend Investigator provides the following special REXX commands for use in user exits written in REXX. All of these commands are available in the default REXX environment, FAULTA. Generally, if another environment has been made current using the REXX ADDRESS instruction, then it is necessary to precede the Z Abend Investigator REXX commands with ADDRESS FAULTA. However, the EVALUATE, LIST, and NOTE commands are available with both ADDRESS FAULTA and with ADDRESS IPCS for compatibility with REXX exits for the IPCS environment.