diff --git a/runtime/doc/windows.txt b/runtime/doc/windows.txt
index af06ac8..81042db 100644
--- a/runtime/doc/windows.txt
+++ b/runtime/doc/windows.txt
@@ -1,4 +1,4 @@
-*windows.txt*   For Vim version 7.4.  Last change: 2016 Jul 30
+*windows.txt*   For Vim version 7.4.  Last change: 2016 Aug 18
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -75,7 +75,7 @@
 
 The main Vim window can hold several split windows.  There are also tab pages
 |tab-page|, each of which can hold multiple windows.
-
+							*window-ID*
 Each window has a unique identifier called the window ID.  This identifier
 will not change within a Vim session. The |win_getid()| and |win_id2tabwin()|
 functions can be used to convert between the window/tab number and the