Suspending Spooling Activity to the Unit Record Devices

To suspend spooling activity to the unit record devices, respond to CP's start prompt with the DRAIN option and either WARM, FORCE, COLD, or CLEAN. For example, if you want CP to perform a warm start and suspend all spooling activity to the unit record devices, enter:
warm drain
To start spooling activity to some or all of these unit record devices, enter the appropriate START commands. (To find out how to start a device, look under the device in Controlling Local Devices.)