HP 3000 Manuals

HP ALLBASE/4GL Developer Reference Manual Vol. 1

Master Title Referencing 

You can reference a master title by using the master title name prefixed
by M-.

Format 

     M-name 

When HP ALLBASE/4GL encounters a reference to a master title, the system
first looks for an application title of the same name.  If the
application title does not exist, the system uses the named master title.

MPE/iX 5.0 Documentation