Completion: Improve docstring of option `org-completion-use-ido'.

lisp/ChangeLog

@@ -1,5 +1,8 @@
 2008-12-21  Carsten Dominik  <carsten.dominik@gmail.com>
 
+	* org.el (org-completion-use-ido): Enhance docstring of
+	`org-completion-use-ido'.
+
 	* org-export-latex.el (org-export-latex-make-header): Double the %
 	in the time stamp format.
 	(org-export-latex-special-chars): Handle case where there is no

lisp/org.el

@@ -2418,7 +2418,10 @@ Use customize to modify this, or restart Emacs after changing it."
   :group 'org)
 
 (defcustom org-completion-use-ido nil
-  "Non-nil means, use ido completion wherever possible."
+  "Non-nil means, use ido completion wherever possible.
+Note that `ido-mode' must be active for this variable to be relevant.
+If you decide to turn this variable on, you might well want to turn off
+`org-outline-path-complete-in-steps'."
   :group 'org-completion
   :type 'boolean)