The main program window allows you to operate all devices - both displayed and
hidden from the device stop menu.
Mainly it serves to work with hidden devices, e.g. to stop them or to make
one of them displayed in the menu back.
The main window gives you the same functionality as the device stop menu as well as performs some additional seldom done operations. However due to its universality it is less convenient to do frequent operations than the device stop menu.
What can be done in the main window and cannot in the menu?