Here you can set what gauges to display and in what units. Also you can select backgrounds and other user defined settings such as font color. To access the settings you double click any of the gauges skins. If you select to show no gauges or use a transparent skin background* (*more on this below), you can still get to settings or exit the program by using the Tray Icon as shown below.
*The Program looks at the gauges bitmap at 0,0 and sets whatever that color is in the bitmap to transparent. So if you choose a all black bitmap the color at 0,0 on that bitmap is black so it sets the whole bitmap to transparent and you will have just floating text. To move the text, you must use a background first such as the default background (uncheck the Use box) to move the gauges to your desired position then check the use box again to use the black bitmap to get back just floating text.