It may surprise you that the cursor on the screen doesn’t move 5 inches when you move the mouse 5 inches on the desk. Instead, the cursor moves farther when you move the mouse faster.

How much farther depends on how you set the first slider here. The Fast setting is nice if you have an enormous monitor, since you don’t need an equally large mouse pad to get from one corner to another. The Slow setting, on the other hand, forces you to pick up and put down the mouse frequently as you scoot across the screen. It offers very little acceleration, but it can be great for highly detailed work like pixel-by-pixel editing in Photoshop.

The Double-Click Speed setting specifies how much time you have to complete a double-click. If you click too slowly—beyond the time you’ve allotted yourself with this slider—the Mac “hears” two single clicks instead.

Just by looking, you’d never know that these Apple mice have both a right button and a left button. Once you turn on the two-button feature in System Preferences (Figure 15-11), though, each side clicks independently.

The Magic Mouse is especially useful in Lion. Its unusually flat, broad top surface is also a trackpad. You can drag your finger across its surface to trigger many of Lion’s trackpad gestures.

The Mighty Mouse is the white mouse that has come with desktop Macs since 2005.

Figure 15-11. This enormous photographic display shows up if you have the Magic Mouse, one of Apple’s secretly “two-button” mouse. The controls here let you program the right and left buttons. This is also where you can turn the right-clicking feature on (just choose Secondary Button from the appropriate pop-up menu)—or swap the right- and left-click buttons’ functions.