For most of us, our Mac’s screen is wider than it is tall, so longer Web pages and documents often benefit from more room from top to bottom. To maximize the amount of usable vertical space and reduce the need to scroll as much, you can set the Dock to hide automatically and appear only when you move your pointer to the bottom of the screen. A better approach is to position your Dock on the side of your screen where it’s less likely to use space you’d prefer to have available for content. Many people prefer the right side, but you can also try the left to see how it works for you. The easy way to move the Dock is to Control-click its separator bar and choose the desired side from the Position on Screen menu.