dopus screen

This command returns information about the Opus screen in  RESULT  in the
following format:-

        <name> <width> <height> <depth> <barheight> <lister width> <lister height>

If Opus is iconified it does not have a screen. In this case  RC  will be
set to 5. You can use this to find out whether or not Opus is currently
iconified.

For example,
        + dopus screen
        > DOPUS.1 640 512 2 10 308 341

The barheight value is useful if you intend to open listers or other
windows just below the screen title bar.

Any screen depth of more than 8 bits, (256 colours), will be reported as 8.