;; function keys F11->F42 from the termcap/terminfo information. On
;; a PC-style keyboard these keys correspond to
;; MODIFIER-FUNCTION_KEY, where modifier is S-, C-, C-S-. The
- ;; code here subsitutes the corresponding definitions in
+ ;; code here substitutes the corresponding definitions in
;; function-key-map. This substitution is needed because if a key
;; definition if found in function-key-map, there are no further
;; lookups in other keymaps.