or another symbol whose function definition is used, etc.),
a cons (STRING . DEFN), meaning that DEFN is the definition
(DEFN should be a valid definition in its own right),
- or a cons (MAP . CHAR), meaning use definition of CHAR in keymap MAP.
+ or a cons (MAP . CHAR), meaning use definition of CHAR in keymap MAP,
+ or an extended menu item definition. (See info node `Extended Menu Items'.)
If KEYMAP is a sparse keymap with a binding for KEY, the existing
binding is altered. If there is no binding for KEY, the new pair