*** You can customize any language environment by using<BR>
set-language-environment-hook and exit-language-environment-hook.
<P>
The hook `exit-language-environment-hook' should be used to undo
customizations that you made with set-language-environment-hook.  For
instance, if you set up a special key binding for a specific language
environment by set-language-environment-hook, you should set up
exit-language-environment-hook to restore the normal key binding.