Commodore 64 User Manual page 30

PLUS AND MINUS KEYS
You've probably noticed that some other keys,
in addition to the letter keys, have graphics
symbols printed on their side faces. Some of
these keys appear the same in either the
Graphics Mode or the Text Mode; other keys
will change when the mode is changed.
THE + AND - KEYS:
KEYS THAT DONT CHANGE
The • (plus) and (minus) keys appear the
same on the screen, no matter which mode is
used. To see this, perform the following steps:
First, press the
SCREEN 1
and - keys by themselves.
Next, hold down the SHIFT key at the same
time as the - and - keys. The graphics sym
bols on the right-hand side of each key
appear.
SCREEN 2
Then, hold down the C= key and press the 4
and - keys. The symbols on the left-hand side
display.
SCREEN 3
Notice that sometimes two graphics symbols
blend together to form one large symbol when
they are placed together.
Now, enter the Text Mode by pressing SHIFT
and C= at the same time. When you look at
the screen, nothing has changed. This is
because the + and - keys are the same in
both upper- and lowercase.
Return to the Graphics Mode now by using the
SHIFT and C= keys together.
Before going on to the next exercise, clear
the screen by holding down a SHIFT key and
pressing the CLR/HOME key.
SCREEN 1
Typing the plus and minus keys by
themselves displays the ■ and - symbols.
SCREEN 2
Use SHIFT with the plus and minus keys to
display the right-hand graphics symbols.
_
_
SCREEN 3
Using C = with the plus and minus keys
displays the left-hand graphics symbols.
PLUS key • MINUS key
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