Good eye! I had never noticed those before. Yes I think those are centred to j and f. on the Macbook Pro I'm using right now, if you look carefully, the touchpa

Good eye! I had never noticed those before. Yes I think those are centred to j and f. on the Macbook Pro I'm using right now, if you look carefully, the touchpad is centred relative to the body but it is slightly off centre relative to the home row.