This submission arrived on a floppy, and the floppy had parity errors on it. As a result, a README file was unreadable and is not included. In addition, the file TEST.DAT was truncated. However, since it appears that all of the necessary information survived, the submission has been retained in the collection. The package contains a set of routines to allow a Printronix 300 printer to emulate a drum plotter.