VMS Help ACCOUNTING, /PRIORITY, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The /PRIORITY qualifier uses the value of the priority field
    to select records for processing. This field is present in all
    records except file backward link and file forward link records.
    For print and batch job records, this field contains the priority
    of the job in the print or batch queue. For other records, it
    contains the base process priority.

    The /PRIORITY qualifier selects only records that have the
    specified values in the priority field. If you precede the values
    with a minus sign, it selects all records except those with the
    specified values.

    Each priority must be a decimal number.