Thanks for this article Nick. I've had some online coaches beat me up for "elbow flare" and I practically had to relearn pressing to do it their way.
I was never able to find the reason for it in the blue book, and had meant to ask you guys about it. I'd assumed it might to avoid shoulder impingement, as is done for bench pressing.
It felt unnatural, as though I was mostly using front deltoids this way.
Thanks for clearing it up.