Editing Symbolics layout (section)

==I/O System in Lisp Machines (1981)==
(See pages 276 and onwards in the Lisp Machine Manual, 3rd ed. 1981, link below).

===Buttons on the keyboard===
* Page - Enter a page separator.
* Rub out - Delete character to the left.

===Modifiers===
* SHIFT
* TOP
* GREEK/FRONT
* CONTROL
* META
* SUPER
* HYPER

There are no control characters as in ASCII, so CONTROL just sets the ''control'' modifier bit.

If Shift is pressed along with CONTROL and/or META, it sets the ''hyper'' modifier bit!

Example: Pressing CONTROL+SHIFT+A does not produce C-A instead of C-a, but H-A.

===Character codes===
The code table in page 279 of the Lisp Machine Manual does not show all characters and symbols on the [[Space Cadet]] keyboard. However, the 4 hands and I-IV are present. See also pages 287/288. For an example on how to use the hands symbols, see p. 437.