What type of file is a PRS?

Pickups are designed and wound in-house; PRS is more secretive about magnet and wire type and construction than some aftermarket pickup manufacturers. PRS humbucking pickups have gone by many names, including HFS (Hot, Fat, and Screams); Vintage Bass and Treble; McCarty; Santana I, II, and III; Archtop; Dragon I and II; Artist I through IV; #6, #7, #8, #9, and #10; and RP (after the initials of the designer.) Further adding to the obscurity, many of the above pickup types are actually a pair of pickups wound in opposing directions, one intended for the neck and one for the bridge position.