I have little experience in chips, but the general consensus on the many different detailing forums is to clean the area completely, using isopropyl alcohol to remove any grease or wax and then use the touch up pen and over fill the chip. I would use painters tape around the chip as close as you can and then do it to stop it from spreading. Once it has cured, wet sand it until it is as smooth as possible, and then give it a going over with finishing polish.
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