DD statement known as JOBLIB is what determines the location of the programme that is executed by the statement known as EXEC. The assertion is valid for each and every stage of the project as a whole, but it cannot be applied to any of the enumerated operations.  STEPLIB operates in a manner similar to that of JOBLIB and is consulted to ascertain the dataset in which the programme is contained. It is solely relevant to the process step that it is a component of, not to the whole undertaking. This may be applied to every stage of the process, as well as to processes that are listed.  In the event that both STEPLIB and JOBLIB are being utilised, the system will give precedence to STEPLIB and will ignore JOBLIB as a result.