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

$PIOREFERENCE

Draft MDC Standard

☞

7.1.4.10.10 $PIOReference

$PIOR[EFERENCE]

identifies the principal I/O device. When a process is initiated, but before any commands are processed, the value of $PIOReference is equal to the value of $Principal with the following restrictions:

  1. If $Principal is the empty string, then $PIOReference is the empty string.
  2. If $Principal is not the empty string, then $PIOReference shall include an environment.
Button for 1977 Button for 1984 Button for 1990 Button for 1995 Button for MDC Button for notes Button for examples

Copyright © Standard Documents; 1977-2024 MUMPS Development Committee;
Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 28-Nov-2011, 21:03:45.

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