| http://www.w3.org/ns/prov#value | - On the other hand, as shown in FIG. 5, the direction of joystick push is displaced away from the Z-axis by the amount of the gap between the X-axis 115 and the Y-axis 116 on the spherical member 114 and the X-axis guiding slot 111 and the Y-axis guiding slot 112, respectively, formed in the base 113, if the joystick 117 is at a position other than the neutral position.
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