The $T PRTnnnn,SETUP=HALT command allows you to specify that a printer should halt so you can verify output characteristics before it starts printing data sets. The $T PRT can only be entered on an inactive printer. Use the $Z PRTnnnn command when you want to temporarily halt a printer in the middle of a job, rather than requeuing the job. You must use the $S PRT(nnnn) to restart this where it had been halted. The $E PRTnnnn command restarts the job, requeuing the output by its job priority. To interrupt a printer during processing of the current output group (set of a job's output data sets that share output characteristics) and return the output to the output queue, enter the $I PRTnnnn command. To purge the output currently printing, enter the $C PRTnnnn command. To stop a printer after it completes processing the current output group and then drain the device (free the associated system resources), enter the $P PRTn nnn command.