I was sparring today, and figured the best way to avoid hurting my arms when I absorb a roundhouse kick is to block with me elbow. That's still not quite enough, so I put my other hand next to it as a support. As I was doing this, I realized it was an augmented outside block. This technique has always confused me in the forms. Placing your hand to the side of your other elbow didn't really help much with the strength or leverage of a block with the hand or wrist. But it makes a lot of sense if you're reinforcing the elbow.