These conventions are new in Emacs 22, and some major modes
implemented by users do not follow them yet. So if you put a function
onto @code{after-change-major-mode-hook}, keep in mind that some modes
-will fail to run it. If user complains about that, you can respond,
+will fail to run it. If a user complains about that, you can respond,
``That major mode fails to follow Emacs conventions, and that's why it
fails to work. Please fix the major mode.'' In most cases, that is
good enough, so go ahead and use @code{after-change-major-mode-hook}.