This is the mnemonic name identifying the destination device, usually a printer or terminal, that receives alarms when the node's alarm distribution is configured to send to PRIN. This only takes effect when cdx6500NMNPCalmDistrib includes the PRIN destination; an admin who wants to stop alarm printouts entirely without disabling other alarm distribution methods, like sending to the control terminal, simply blanks this field rather than reconfiguring the distribution setting itself. For example, setting this to blank would silence a physical alarm printer that had been noisily printing every threshold alarm, while alarms could still be reaching the control terminal via the CTP distribution option.