Special variables -- $EREF


Introduced in the 1995 ANSI M[UMPS] Windowing Application Programmer's Interface standard.

The value of this special variable is the name of the node in ^$WINDOW that was involved in the most recent error that occurred.

Assuming that there is no button defined with the name "something wrong",
SET ^$WINDOW("DEMO","DEFBUTTON")="something wrong"
will cause an error with $ECODE containing ",M52," and $EREF equal to the canonic form of the name of the above reference to ^$WINDOW.

This document is © Ed de Moel, 1995-2005.
It is part of a book by Ed de Moel that is published under the title "M[UMPS] by Example" (ISBN 0-918118-42-5).
Printed copies of the book are no longer available.

This document describes the various special variables that are defined in the M[UMPS] language standard (ANSI X11.1, ISO 11756).

The information in this document is NOT authoritative and subject to be modified at any moment.
Please consult the appropriate (draft) language standard for an authoritative definition.

In this document, information is included that will appear in future standards.
The MDC cannot guarantee that these 'next' standards will indeed appear.