screen (25 for text mode, 28 for VESA graphics mode.)
-F1 textfile background
+F1 textfile background_file
...
-F12 textfile background
+F12 textfile background_file
Displays full-screen help (also available at the command line.)
The same control code sequences as in the command line
interface are supported, although some are ignored.
Additionally, a second argument allows a different background
- image to be displayed.
+ image file (see MENU BACKGROUND) to be displayed.
The menu system honours the TIMEOUT command; if TIMEOUT is specified