Writer

What is a Writer?

A computing program that serves as a link between an output queue and a printer. The OS/400 is the sole operating system of the IBM AS/400 line of system. Normally the writer is started automatically at OS/400 IPL time.

Via IBM:

The Work with Writers (WRKWTR) command gives the status of printers and writers. This can be the overall status of all writers, the overall status of all printers (along with writer information for these printers), or the detailed status of a specific writer. The status of the writers may change while the command is running.