No Scroll; Caps Lock; 0 /80 D Is P La Y; Alt - Commodore 128 System Manual

No Scroll

Press this key down to stop the text from scrolling when the
cursor reaches the bottom of the screen. This turns off scrolling
until you press the NO SCROLL key again.

Caps Lock

This key lets you type in all capital letters without using the SHIFT
key. The CAPS LOCK key locks in when you press it, and must
be pressed again to be released. Caps lock only affects the
lettered keys.
40/80 Display
The 4 0 /8 0 key selects the main (default) screen format: either 40
or 80 column. The selected screen displays all messages and
output at power-up, or when RESET, or RUN/STOP/RESTORE
are used. This key may be used to set the display format only
before turning on or resetting the computer. You cannot change
modes with this key after the computer is turned on unless you
use RUN/STOP/RESET or RUN/STOP/RESTORE. Section 8
provides an explanation of 40/80 column modes.

Alt

The ALT allows programs to assign a special meaning to a given
key or set of keys.
Unless a specific application program redefines it, holding down
the ALT key and any other key has no effect.

Tab

This key works like the TAB key on a typewriter. It may be used
to set or clear tab stops on the screen and to move the cursor to
the columns where tabs are set.

Line Feed

Pressing this key advances the cursor to the next line, similar to a
cursor down key.
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