PMDF System Manager's Guide

If the logging keyword is specified for a printer channel, then the channel will log its activity to the logging files. However, the printer channel logs the first 32 characters of the print queue name in place of the enqueuing channel name in the log file. On OpenVMS, in place of the message size in the log file, the printer channel logs the print job's queue entry number thereby allowing system accounting records to be cross-referenced with the logging file; on UNIX, the message size field is always shown as 0.