| http://www.w3.org/ns/prov#value | - In other words, there is an advantage in that many functions can be added to the car navigation device itself, regardless of whether the device utilizes a controller having a few number of switches, panel switches, or a controller using a means including a joystick that have a few number of switches. [0006] However, every time the monitor screen is switched, the virtual buttons displayed on the mo
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