For the MIB: A value of 0 means that the priority was not
specified by the job service requester and the system did not
specify a default value.
ISO DPA: Job-priority
This attribute specifies a priority for scheduling the print-
job. It is used by servers that employ a priority-based
scheduling algorithm.
A higher value specifies a higher priority. The value 1 is
defined to indicate the lowest possible priority (a job which a
priority-based scheduling algorithm shall pass over in favor
of higher priority jobs). The value 100 is defined to indicate
the highest possible priority. Priority is expected to be
evenly or 'normally' distributed across this range. The mapping
of vendor-defined priority over this range is implementation-
specific.
[The following DPA sentence is covered by the value of 0, since
the DPA range is 1..100. A value of 0 returned by an SNMP agent
indicates the same semantics as ISO DPA returning the job object
without the job-priority attribute present:]
The omission of this attribute implies that the user
places no constraints concerning priority on the scheduling of
the print-job.