HP 3000 Manuals

MPE/iX Quick Reference Guide

TTUTIL 

TTUTIL is a screen-driven program that lets you modify characteristics of
serial port connections (such as flow control, modem control, printer
control and character handling) by modifying the terminal type file
assigned to the port.  You can create, modify or view an existing
terminal or printer type file.

                          or     
     RUN TTUTIL.PUB.SYS              TTUTIL 

MPE/iX 5.0 Documentation