Apple Macintosh PowerBook 1400 - Manual (Page 72)

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Installing application programs
You’ll probably want to buy and install additional application programs. Refer
to the manuals you receive with your programs for instructions on installing
and using them.
In most cases, you install application programs onto your internal hard disk
from a CD-ROM disc or from floppy disks that you receive as part of an
application program package. The following illustration shows how to insert a
floppy disk in the floppy disk drive.
(For information about using a compact disc to install programs, see “Using a
CD in the CD-ROM Drive” in Chapter 2.)
Working with several programs at a time
You can open as many application programs and desk accessories as your
computer’s memory allows.
All open programs are listed in the Application menu at the right end of the
menu bar. The name of the active program (the one you’re using right now)
has a checkmark next to it, and its icon appears in the menu bar.
Insert the disk metal end first, label side up.
Chapter 4
The Finder icon
A checkmark indicates
the active program
Commands to hide or
display open windows
Open programs