(defcustom display-time-mode nil
"Toggle display of time, load level, and mail flag in mode lines.
-This variable should be set only with \\[customize], which is equivalent
-to using the function `display-time-mode'."
+Setting this variable directly does not take effect;
+use either \\[customize] or the function `display-time-mode'."
:set (lambda (symbol value)
(display-time-mode (or value 0)))
:initialize 'custom-initialize-default