Operations
An operation which adds a new output device to the
spooler together with its associated print limit
An operation which removes a file from the queue
associated with a particular output device
An operation which adds a file to the queue associated with
a particular output device
An operation which alters the upper limit of print lines for a
particular output device
An operation which moves a file from a queue associated
with an output device to another queue associated with a
second output device