Welcome to the Lost Coast. In this tour, we're going to be talking about a new graphics technology we've been developing, called High Dynamic Range Lighting, or HDR. We'll also be giving you some insight into the design and production challenges we faced during the construction of the Lost Coast. First, a quick explanation of the commentary system. To listen to a commentary node, put your crosshair over the floating commentary symbol and press the +USE key. To stop the commentary, put your crosshair over the rotating node and press your +USE key again. Some commentary nodes may take control of the game for the purpose of showing something to you. In these cases, simply pressing your +USE key will stop the commentary.