Apple PowerBook (Duo 270C) - Manual (Page 29)

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.
Put the computer to sleep to
n
connect it to a PowerBook Duo MiniDock or a PowerBook
Duo Floppy Adapter
n
change the battery
n
conserve power during your work breaks
To put the PowerBook to sleep
n
If the computer is on, choose the Sleep command from the
Special menu.
n
You can also put the computer to sleep by closing the display.
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.
Chapter 1: Setting Up Your PowerBook Duo 13