Apple Duo 270C manual Use the trackball, Point

Use the trackball

Your computer has a two-button trackball. You use the ball itself to control the movements of a pointer on the screen. The pointer you’ll see most often is an arrow (8).

You use the buttons to initiate actions that you want the computer to perform. Both trackball buttons do the same thing. You can always use whichever one you prefer.

Much of the work you do on the PowerBook uses four trackball actions: pointing, clicking, pressing, and dragging.

(If you want to return to the Macintosh Basics tour for more practice with the trackball, see Chapter 1 for instructions.)

Point

You point to an object on the screen by rolling the trackball so the pointer is positioned over that object. When the pointer is an arrow, the tip of the arrow must be exactly over the object.

Practice pointing to different objects on the Macintosh desktop, such as the startup hard disk icon near the upper-right corner, the Trash icon near the lower-right corner, and the Help menu icon near the right end of the menu bar.

28 Chapter 2: Working on the Desktop