The exit receives the data set in storage as input. The data set contains all of the records in the current EDIT utility data set. The RECFM of the EDIT input data set indicates the format of the data set. Standard header words (LL/00) give the lengths of variable records. The data attribute parameters give the length of fixed records. All records in the data set are contiguous and are contained in a single area of virtual storage, assigned from subpool 1.