Commodore 128 System Manual page 26

RETURN key, you probably will get a message like SYNTAX
ERROR on the screen. This is called an " Error Message."
Appendix A lists the error messages and tells how to correct the
errors.
NOTE: the examples given in this book, the following symbol
indicates that you must press the RETURN key:
Shift
There are two SHIFT keys on the bottom row of the keyboard.
One key is on the left and the other is on the right, just as on a
standard typewriter keyboard.
The SHIFT key can be used in three ways:
1. With the upper/lower-case character set, the SHIFT key is
used like the shift key on a regular typewriter. When the SHIFT
key is held down, it lets you print capital letters or the top
characters on double-character keys.
2. The SHIFT key can be used with some of the other command
keys to perform special functions.
3. When the keyboard is set for the upper-case/graphic
character set, you can use the SHIFT key to print the graphic
symbols or characters that appear on the right of the front face
of certain keys. See the paragraphs entitled " Displaying
Graphic Characters" at the end of this section for more details.
Shift Lock
When you press this key down, it locks into place. Then, whatever
you type will either be a capital letter, or the top character of a
double-character key. To release the lock, press down on the
SHIFT LOCK key again.
Moving the Cursor
ln C128 mode, you can move the cursor by using either the four
arrow keys located just above the top right of the main keyboard,
or the two keys labeled CRSR, at the right of the bottom row of
the main keyboard.
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