Apple 145B manual Modifier keys, Arrow keys

Using the keyboard

You use the keyboard to type text and numbers, just as you would on a typewriter. (For touch typists, your keyboard has raised dots in the middle of the D key and the K key to help position your fingers on the home row.)

Depending on the program you’re using, you can use special keys on the keyboard to give commands to the computer and to modify certain things that you do with the trackball. Macintosh PowerBook computer keyboards have two types of special keys: modifier keys and arrow keys.

Modifier keys

All Macintosh keyboards have four modifier keys: Shift,

x(Command), Option, and Control.

Pressed by itself, a modifier key does nothing. You need to press it in combination with another key (or while using the trackball). The modifier key causes the other key or trackball to give a different (“modified”) result.

You type a capital letter, for example, by pressing the Shift key with a letter key. Most programs let you choose commands by pressing the x key with certain letter keys.

Arrow keys

All Macintosh keyboards have four arrow keys: Up Arrow, Down Arrow, Left Arrow, and Right Arrow.

Many programs let you use the arrow keys as well as the trackball to move the pointer on the screen.

shift shift

ctrl option

Modifier keys Arrow keys

Chapter 2: Working on the Desktop 53