Once the printer is unused, the spooler can send the job to the printer without fear of contention from other print jobs.
一旦打印机闲置，后台处理程序就可以将作业发送到打印机，而不必担心其他打印作业争用。
2
Under the covers, the code configures the simulator for the disk (where it loads the LISP interpreter), the card reader (where it reads the job), and the printer (where it emits the output).
WS-Resource Framework is essential where the stateful resources involved in the Web services interaction such as shopping cart, printer, print job, and so on.