;;;###autoload
(defun find-function (function)
- "Find the definition of the FUNCTION near point.
+ "Find the definition of the Emacs Lisp FUNCTION near point.
Finds the source file containing the definition of the function
near point (selected by `function-called-at-point') in a buffer and
places point before the definition.
Set mark before moving, if the buffer already existed.
-See also `find-function-recenter-line' and `find-function-after-hook'."
+See also `find-function-recenter-line' and `find-function-after-hook'.
+
+Use \\[xref-find-definitions] to find definitions of functions and variables
+that are not part of Emacs."
(interactive (find-function-read))
(find-function-do-it function nil 'switch-to-buffer))