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Sunnyvale, CA | After setting the first B poiont, if you still are within some distance of the AB line you can press B again until you turn around or go more than some threshold distance from the AB line (I don't remember what the limit is), so if you are driving manually to gather the furthest out point, reset B as often as you want before the distance gets too large (less than a few feet would be OK).
This Reset B point feature works if you are using the built-in GPS receiver or an external GPS receiver. | |
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