Every Windows mouse ever made has at least two mouse buttons . You use the left one for selecting things, and the right one for making shortcut menus appear (Figure 1-2). If you have a newer mouse, it might even have a scroll wheel in the middle for efficiently scrolling long documents and Web pages.
The mouse that came with your Mac, however, has only one mouse buttonthe equivalent of the Windows left mouse button. You use it exclusively for selecting and clicking things.
That's not to say that you can't "right-click" things with your one-button mouseyou can, as shown in Figure 1-2. On the Mac, though, you're supposed to produce shortcut menus by holding down the Control key as you click things on the screen.
Furthermore, if this Control-clicking business bothers you, you'll be happy to hear that two-button mice work just fine on the Mac, too; they let you go back to right-clicking things, and the little scroll wheel works, too.
You can connect the two-button USB mouse from an old PC, for example, or buy one for $10 or $15 to use with your Mac. (Heck, even Apple sells something called the Mighty Mouse. It looks like it has no buttons at all, but its single, unified shell has left-side and right-side sensors that let you left- and right-click.)
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