When one of the default printers becomes available, the system chooses one of the queued print requests to be the next print request printed. By default, short print requests are chosen before longer print requests. However, if the BACKUPBYJOBNR operating system option is set, then backup files are printed in order according to job number. The operator can set or reset this system option by using the OP (Options) system command.
Normally, the system removes any backup file from disk once the backup files has been printed. However, the system does not delete the backup file in the following circumstances:

