This topic lists environment variables relate to configuring the PL/I environment.
| Variable | Description | 
|---|---|
| ES_IMS_PLI_INDIRECT_PCBADDR | Determines whether the PL/I program converts the PCB address list from a direct to an indirect addressing technique. Set the variable to one of the following: 
 The default is D (which stands for dynamic). | 
| 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 will be 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". | 
| IBM_DBG_LANG | The language the IBM PL/I debugger should use | 
| MFPLI_PRODUCT_DIR | The location of the Open PL/I installation. It is used to find files needed for compiling and linking. |