DBPREFD

The high level qualifier of the sequential file names. The default is the &DBPREFD variable.

SEQI

The input sequential file's data set name suffix

SEQO

The output sequential file's data set name suffix

DISPO

The allocation disposition for the output sequential file. The value of the DISPO parameter is assigned to the JCL DISP parameter of the output sequential file. The default is (,CATLG).

UNITO

The name of the DASD unit to be used for allocation to the output sequential file.

VOLO

The DASD volume serial number on which the output sequential file is allocated. The volume must be defined in MVS as being associated with the unit name specified in the UNITO parameter. If VOLO is not specified, the files are allocated using only the UNITO parameter.