I don't understand what you mean... that is FotRSU there with the button. When you press that, you will get a message from the "Navigator" in the text box to the effect of "Range is approximately 9850nm at current speed.", or whatever the case might be, based upon how much fuel is left. If you change the speed by even a pinch, it might affect that range quite a bit.
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"...and bollocks to the naysayer/s" - Jimbuna
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