*** Custom support
The variables font-lock-face-attributes, font-lock-display-type and
font-lock-background-mode are now obsolete; the recommended way to specify the
faces to use for Font Lock mode is with M-x customize-group on the new custom
group font-lock-highlighting-faces. If you set font-lock-face-attributes in
your ~/.emacs file, Font Lock mode will respect its value. However, you should
consider converting from setting that variable to using M-x customize.
You can still use X resources to specify Font Lock face appearances.