%N tvopen %F $MIR/src/subs/tv.for
%D Open an image display device.
%P jm
%: tv, display
%B
        subroutine tvopen(device)

        implicit none
        character device*(*)

  Open an image display device. See TvChar for a description of the
  Tv model.

  Input:
    device     Name of device. This is of the form:
                 type@name[/pname[:pport]]
               or
                 type:port@name[/pname[:pport]]
               Here "name" is the physical device name, or the
               name of the server (for network display servers). If
               the server type permits alternate port numbers, they
               may be specified using the second input form.  The
               terms in brackets are optional designations for panel
               servers and, while they may be included (see the
               example below) in the device specification, they are
               ignored by this routine.  "Type" is the device or
               server type.  Legitimate values are:
                 'ivas'        IVAS server (on VMS only)
                 'sss'         Sun screen server.
                 'xmtv'        X-window screen server with buttons.
                 'ivserve'     Ivas server.
                 'file'        Dump to a file (UNICOS only).
                 'vfile'       Dump to file - variable size (UNICOS only).
                 'ultra'       Ultra frame buffer (on UNICOS only).
                 'raster'      Rastertech device (on FX only).
               Examples:
                 ivas@ixa0:      An IVAS with device name IXA0:
                 ivserve@castor  An IVAS server on machine castor.
                 xmtv@colo       A XMTV server on machine colo.
                 xmtv:5001@astro A XMTV server on machine astro
                                 communicating via port number 5001.
                 xmtv:5001@astro/earth:5010
                                 A XMTV server on machine astro
                                 communicating via port number 5001
                                 with a panel server on machine earth
                                 communicating via port number 5010.
