HP 68000 Series User Manual page 435

You can also use the F4 function key to alternate views of the active window.
To create alternate views of a user-defined window, follow the procedure
outlined in the Window New command description.
See Also
Window Active
Window Cursor
Window Delete
Window Erase
Window New
Window Resize
Window Screen_On
Examples
To display the alternate view of the active window:
Window Toggle_View
To display the alternate view of the high-level Code window:
Window Toggle_View High_Level Code
To display the alternate view of user window 57:
Window Toggle_View User_Window 57
Chapter 9: Debugger Commands
Window Toggle_View
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