Move the mouse on the work surface or mouse pad.
Use your fingertips to move the ball of the trackball.
Move the tip of one finger (usually your forefinger) on the surface of the track pad.
The mouse pointer, which usually looks like an arrow (Figure 2), moves on your computer screen.
Figure 2 The mouse pointer usually looks like an arrow pointer when you are working in the Finder.
When the tip of the mouse pointer's arrow is on the item to which you want to point (Figure 3), stop moving it.
Figure 3 Move the mouse pointer so the arrow's tip is on the item to which you want to
The tip of the mouse pointer is its "business end."
Point to the item you want to click.
Figure 4 Click to select an icon...
Figure 5 ...or an item in a list.
Point to the item you want to doubleclick.
Press (and release) the mouse button twice quickly. The item you doubleclicked opens.
Keep the mouse pointer still while double-clicking. If you move the mouse pointer during the double-click process, you may move the item instead of doubleclicking it.
Point to the item you want to press.
Press and hold the mouse button without moving the mouse. The item you are pressing is activated (Figure 6).
Figure 6 Press a scroll bar arrow to activate it.
The press technique is often used when working with scroll bars, as shown in Figure 6, where pressing is the same as clicking repeatedly.