Much thanks to all. This has been very helpful. I was actually asking about arrow pass location I just didn't know the term and probably didn't phrase the question properly. Aaron and others nailed it for me. I also had wondered about the nocking point above (or below) perpendicular to the arrow pass and you've answered that handsomely as well. And now I have a new term I can use.
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Thanks again to all. I do enjoy this forum.