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Left Hand Pointer

$PRINCIPAL

1995 Version of ANSI (Equivalent to Current ISO Version) of Standard

Right Hand Pointer

7.1.4.10 Intrinsic special variable names svn

Syntax Definition
$P[RINCIPAL]

$Principal identifies the principal I/O device.

The principal I/O device is the device that is the current device at the moment when a process is started, so that the value of $Principal will be equal to the initial value of $IO.

(See Close and Use commands).

Button for 1977 Button for 1984 Button for 1990 Button for 1995 Button for MDC Button for notes Button for examples

Copyright © Standard Documents; 1977-2018 MUMPS Development Committee;
Copyright © Examples: 1995-2018 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2018 Ed de Moel.

This page most recently updated on 13-Sep-2014, 08:19:51 .

For comments, contact Ed de Moel (demoel@jacquardsystems.com)