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There are several reasons to spool:
- The program can run to completion without printer problems interfering.
Spooling saves output in a buffer area for printing at a later time. This
happens when you send or queue to the spool device. It's a good way to
store the results of a time-consuming calculation, such a complex VA File
Manager search or print option. It also provides on-line storage so you
can quickly print multiple copies at any time.
- The printer may not be free.
- Multiple copies may be desired.
- Your program may require intensive processing time and is best run at
night when the computer is lightly used. Output can then be printed
during the day when someone can attend the printer.
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