Comment IEFBR14 (Score 1) 903
I don't know when it was written but it predates 1979 (the oldest reference I could find). It is as old a "JCL" is on IBM mainframes. Even today, it is the single most useful and used program on the mainframe and it does nearly nothing. It sets a return code of zero and returns. That's all. It is primarily used to allow the resource allocations routines in JES to execute.
