This package checks the spelling of on-screen text. ; Usage Write the following code to your .emacs file: (require 'spell-fu) (spell-fu-global-mode) Or with `use-package': (use-package spell-fu) (spell-fu-global-mode) If you prefer to enable this per-mode, you may do so using mode hooks instead of calling `spell-fu-global-mode'. The following example enables this for org-mode: (add-hook 'org-mode-hook (lambda () (setq spell-fu-faces-exclude '(org-meta-line)) (spell-fu-mode)))