Update runtime files.
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 143656a..ac3d394 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 7.3.  Last change: 2013 Feb 28
+*options.txt*	For Vim version 7.3.  Last change: 2013 Mar 13
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -699,6 +699,10 @@
 	when the system locale is set to one of CJK locales.  See Unicode
 	Standard Annex #11 (http://www.unicode.org/reports/tr11).
 
+	Vim may set this option automatically at startup time when Vim is
+	compiled with the |+termresponse| feature and if |t_u7| is set to the
+	sescape sequense to request cursor position report.
+
 			*'antialias'* *'anti'* *'noantialias'* *'noanti'*
 'antialias' 'anti'	boolean (default: off)
 			global