Shane and Voyteck will soon be here to answer your question in depth. They are by far the most knowledgeable of all the GCA'ers when it comes to architecture.
Maybe they'll even explain to you how the 9's, when first built, were reversed, and when they were changed to the present course arrangement. Or that Augusta Nat'l was Berkman's nursery prior to being purchased by Jones & Roberts, or even explain to you how each hole changes in direction, why, and by how much. I'm sure they'll regal you with all they know.