HP 3000 Manuals

Introduction to MPE XL for MPE V Programmers Migration Guide

MERGEINIT (NM) 
(changed) 

Some parameters have changed for MERGEINIT in native mode.  Reserved
parameters are:  preprocessor, postprocessor, keycompare, errorproc, and
memsize.  You can not specify these parameters but you must maintain the
parameter positions.

MPE/iX 5.0 Documentation