From: Kaushal Modi <kaushal.modi@gmail.com>
Date: Fri, 26 Feb 2016 18:32:12 +0000 (+0200)
Subject: * lisp/apropos.el (apropos-variable): Doc fix.  (Bug#22813).
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* lisp/apropos.el (apropos-variable): Doc fix.  (Bug#22813).
---

diff --git a/lisp/apropos.el b/lisp/apropos.el
index 3c1a4136fbf..eb145bdc571 100644
--- a/lisp/apropos.el
+++ b/lisp/apropos.el
@@ -505,8 +505,9 @@ variables, not just user options."
 ;;;###autoload
 (defun apropos-variable (pattern &optional do-not-all)
   "Show variables that match PATTERN.
-When DO-NOT-ALL is non-nil, show user options only, i.e. behave
-like `apropos-user-option'."
+With the optional argument DO-NOT-ALL non-nil (or when called
+interactively with the prefix \\[universal-argument]), show user
+options only, i.e. behave like `apropos-user-option'."
   (interactive (list (apropos-read-pattern
 		      (if current-prefix-arg "user option" "variable"))
                      current-prefix-arg))