HP 3000 Manuals

GLOBAL EXTERNAL [ HP Business BASIC/XL Reference Manual ] MPE/iX 5.0 Documentation

HP Business BASIC/XL Reference Manual

GLOBAL EXTERNAL 

The GLOBAL keyword modifier to the EXTERNAL statement.  It allows either
the main block or any procedure or function within a program to call an
external.  It's use and syntax are explained in the EXTERNAL statement.

MPE/iX 5.0 Documentation