Fred modifier keys

Fred relies on two modifier keys to indicate command keystrokes. In the Emacs tradition, these modifiers are called Control and Meta. The following key sequences are used to indicate Control and Meta in MCL:

To enter a Control keystroke, hold down the Control key while you press the other key of the keystroke. For example, to enter Control-X, hold down the Control key and press X. To enter Control-X Control-S (Save Window), hold down the Control key and press X, then continue to hold down Control and press S. To enter Control-X H (Select All), hold down Control and press X, then release the Control key and press H.

There are two ways to enter a Meta keystroke.

By default, the Option key used to indicate Meta keystrokes. To enter a Meta keystroke, hold down the option key and then press the other key of the keystroke.
The example file "escape-key.lisp" allows the escape key to be used as the Meta keystroke. When this file is loaded, you enter a Meta keystroke by pressing and releasing the escape key, and then pressing and release the other key of the keystroke. This allows you to have access to the optional character set of the Macintosh when editing in Fred.

To enter a Control-Meta keystroke, hold down both modifier keys as you press the other key of the keystroke.

Gettmg Started with MCL - 19 OCT 1996

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