HP 3000 Manuals

MPE XL Native Language Programmer's Guide

Chapter 5  Accessing NLS Features 

On HP 3000 systems using MPE XL and subsystems with NLS features, all NLS
features are optional.  These features must be requested by the
applications programmer through intrinsic calls or interactively by the
user of a subsystem program through a LANGUAGE command or keyword.

MPE/iX 5.0 Documentation