IBM 3180 1 User Manual page 43

TYPEWRITER/APL KEYBOARD
The typewriter/APL keyboard can be used for APL
applications or for typewriter-like applications.
When the display station is first turned on, the
typewriter/APL keyboard operates the same as the
typewriter-like keyboard.
All the functions that are documented in this manual for
the typewriter-like keyboard, also apply to the
typewriter/APL keyboard.
The symbols for the typewriter/APL keyboard are orange
and are located to the right of the typewriter-like symbols
on the top of the keys or on the front of the keys.
To activate the typewriter/APL keyboard keys, press and
hold down an ALT shift key and then press the
Backspace/APL key.
* ' ^ f APL will be displayed in
the operator information area. Once APL is active, the
shift keys can be used like a typewriter to select the APL
symbol on the upper or lower part of the key tops. To
activate APL symbols that are on the front of the keys,
press and hold down an ALT key and then press the
desired APL key.
The display station can be returned to the typewriter-like
keyboard mode by pressing and holding down an ALT key
and then pressing the Backspace/APL key. APL will no
longer be displayed in the operator information area.