This is a list of the most commonly used environment variables.
| Variable | Description |
|---|---|
| ES_PL1_MFFH | Enables Micro Focus File Handler to perform all Open PL/I I/O operations. The default value is Y. If it is set to N, then all I/O are routed to old Liant file handlers. |
| ES_PL1_MFFH_JCL | Enables you to run Open PL/I programs that access JCL data definitions. The default value is N. |
| ES_PLI_SUPPORT | Tells the CICS Emulation that it needs to load its subsystem support for PL/I user programs. The default value is N. |
| MFPLI_PRODUCT_DIR | The location of the Open PL/I installation. It is used to find files needed for compiling and linking. |
| MFPLI_CONFIG_DIR | The location of the PLIDEBUG.DAT file. The folder defined by the MFPLI_PRODUCT_DIR environment variable is searched before using this location. |