Apple 145B manual Sleep, To put the PowerBook to sleep, Automatic sleep

Sleep

When the PowerBook is in sleep, it draws enough power to maintain the information in its memory (including any open programs and documents). The computer is on, but almost completely inactive.

You should put the computer to sleep to conserve power when you take a work break.

To put the PowerBook to sleep

mIf the computer is on, choose the Sleep command from the Special menu.

mIf the computer is off, you need to turn it on before you can put it to sleep.

Automatic sleep

If you don’t use the computer for several minutes, it goes to sleep automatically. This conserves battery power. You will notice that if you spend several minutes reading without using the computer, or if you take a break, the screen may be dark when you’re ready to resume working.

To wake the computer, press any key on the keyboard (except Caps Lock). The desktop reappears looking just the way it did before the computer went to sleep.

14 Chapter 1: Setting Up Your Macintosh PowerBook