IBM 3164 ASCII Manual page 28

Alphanumeric keys
Enters the alphabet, numbers, symbols, and punctuation marks
The alphanumeric keys are used for entering the alphabet, numbers, symbols,
and punctuation marks as on an ordinary typewriter. To get their upper-shift,
use them with the Shift or Caps Lock key. All alphanumeric keys are
typematic. You can also use the alphanumeric keys to display the alternate
characters that you loaded from the host system by pressing the Alt Chr key.
When the cursor reaches the last character position of a field preceding a
numeric and protected field, it automatically skips the field attribute character
of the numeric and protected field, as well as that field. It reappears at the
head of the next unprotected field. This function is called the auto skip
function.
Alternate character (Alt Chr) key
B 8BBB BBBB BBBB 8BB
BBBBBBBBBBBBBQ BBB BBBB
OBBBBBBBBBBBBB 8BB 8BBB
(]BBBBBBBBBBB~
BBB.
B
~ I
Ctrl
¢
Alt~,
~~eBBBBB~i~
BBB
~BD
(Press and hold)
Enables the use of the alternate characters that you defined for
your own purpose
This key enables you to use a symbol (alternate character) that you defined
for your own purpose. When
YOll
press this key, AL T is displayed in the
operator information area indicating that you are in the alternate character
shift. To use an alternate character (a maximum of 94 characters), it must first
have been loaded from the host system using the Load Alternate Character
command and must have been assigned to a key.
When you press an alphanumeric key with an alternate character assigned,
that alternate character will be displayed on your screen. If no alternate
character is assigned, the original character on the keyboard is displayed. AL T
disappears from the screen when you press this key again and the display
station returns to the original state. For instructions on how to load these
alternate characters, refer to "Commands and responses" in Chapter 5.
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