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The floating window containing traffic-usage information is disabled by default because it takes up screen space, which may not always be convenient when working with a mobile device. When no acute need to control traffic exists, the window can be disabled, but when the amount of traffic and where it is coming from is important to know, it is better to have this data on view.
To enable the display of the floating window:
Immediately after this option is selected, the floating traffic-information window will appear; in the future, it will appear on top of other windows.