| http://www.w3.org/ns/prov#value | - As a result, the user's index finger 106, which is comfortably assigned to rotating the trackball 32, or middle finger 111, which is comfortably assigned to rotating the wheel 34, can be moved back and forth between the wheel and the trackball without contacting the upper surface as might be the case if there were a bridging, non-recessed portion of the upper surface between the wheel and the trac
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