Dos screen

     To see the DOS screen perform one of the following operations:

1) Select the "Other" item in the pull-down menu and the "DOS screen" in
   the submenu.
2) Press the keys [Ctrl-O].
3) Press and hold the key [Shift], move the mouse cursor to the upper left
   corner of the screen and press the left button.

     However it should be noted that seeing the DOS screen does not imply
that you can work in DOS. As soon as you press a key, the regular CP screen
is restored.