 The program would then automatically wait till the requested data was retrieved and placed in the Segment-Area.The status code contained within the PCB would be updated with either blanks (if all went well) or some informational or error code.A typical call from a PL/I program might be CALL PLITDLI(FOUR, GU, Stores-Database-PCB, Stores-Segment-Area, Stores-Root-SSA);.