https://www.ibm.com/docs/en/ims/15.3.0?topic=package-creating-eevt-control-block
IMS 15.3 - Communications and connections - Creating the EEVT control block
IMS creates and initializes the EEVT control block based on information contained in the external subsystem module table (ESMT) that is generated from DFSEMODL...
imscommunications