I translated from chinese with Google so I hope it's right
(1 ) NT version: The new compression format version of the map
(2 ) noQSI version of the map: offsetted Venus map
(3) QSI version map: non offsetted ( as the navigation electronic map are encrypted , the GPS signal is a true signal ,and there is an dislocation of about 500 meters and you will not be able to use the map to navigate) and with a junction view function.
Quick spell functions:support for the use of Chinese characters spelling ,to enter the first letter of the destination name in search function .
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