DISPLAY(7)                      Domain/OS SysV                      DISPLAY(7)



NAME
     display - window device for display manager

DESCRIPTION
     The display device is the login device for the Display Manager (DM).  It
     provides write-only access and is used by programs such as write(1),
     mesg(1), and who(1).

     Opening this device creates a new transcript pad and an associated output
     stream and opens a window on the pad in the position specified by
     `node_data/etc/dm_display/dev_display.conf, if it exists.  Attempts to
     read from this device will fail.

     If `node_data/etc/dm_display/dev_display.conf exists, it must contain a
     single line containing four fields:  a pair of coordinates defining the
     upper left-hand corner of the window, and two values specifying the width
     and height of the window.  The fields must be separated by white space.
     For example, the presence of `node_data/etc/dm_display/dev_display.conf
     containing

          0 0 500 200

     would force windows opened on the display pad to be created in the upper
     left corner of the screen.  If this file does not exist, the display
     device creates windows in the default positions as specified to the DM
     with the wdf command.

     See pad(7) for more information about I/O on specific DM windows.

FILES
     /dev/display                                 device file
     `node_data/etc/dm_display/dev_display.conf   configuration file

SEE ALSO
     dm(1), write(1), mesg(1), who(1), pad(7).