IBM PCjr User Manual

Now, let's see what happens when you press and hold
the Alt key and press the Backslash key at the same
time. (The Backslash key is located above the
CapsLock key.)
Press and hold the Alt key and, at
the same time, press the Backslash
key.
You should see a backslash printed on your screen. (If
it is the backslash, it will look like the mark on the blue
stripe under the key.)
ore
Just to show you what happens without the Alt key;
Press the Backslash separately.
Getting Started 2-31

IBM PCjr Specifications

General

Brand	IBM
Model	PCjr
Category	Desktop
Language	English