Key sequences can contain function keys as well as ordinary characters. Just as Lisp characters (actually integers) represent keyboard characters, Lisp symbols represent function keys. If the function key has a word as its label, then that word is also the name of the corresponding Lisp symbol. Here are the conventional Lisp names for common function keys:
These names are conventional, but some systems (especially when using X windows) may use different names. To make certain what symbol is used for a given function key on your terminal, type C-h c followed by that key.
A key sequence which contains function key symbols (or anything but
ASCII characters) must be a vector rather than a string. The vector
syntax uses spaces between the elements, and square brackets around the
whole vector. Thus, to bind function key `f1' to the command
rmail, write the following:
(global-set-key [f1] 'rmail)
To bind the right-arrow key to the command
forward-char, you can
use this expression:
(global-set-key [right] 'forward-char)
This uses the Lisp syntax for a vector containing the symbol
right. (This binding is present in Emacs by default.)
See section Rebinding Keys in Your Init File, for more information about using vectors for rebinding.
You can mix function keys and characters in a key sequence. This
example binds C-x NEXT to the command
(global-set-key [?\C-x next] 'forward-page)
?\C-x is the Lisp character constant for the character
C-x. The vector element
next is a symbol and therefore
does not take a question mark.
You can use the modifier keys CTRL, META, HYPER, SUPER, ALT and SHIFT with function keys. To represent these modifiers, add the strings `C-', `M-', `H-', `s-', `A-' and `S-' at the front of the symbol name. Thus, here is how to make Hyper-Meta-RIGHT move forward a word:
(global-set-key [H-M-right] 'forward-word)