Update runtime files.
diff --git a/runtime/doc/windows.txt b/runtime/doc/windows.txt
index 8d19e06..5f842c8 100644
--- a/runtime/doc/windows.txt
+++ b/runtime/doc/windows.txt
@@ -1,4 +1,4 @@
-*windows.txt*   For Vim version 8.2.  Last change: 2020 Aug 15
+*windows.txt*   For Vim version 8.2.  Last change: 2020 Sep 02
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -955,12 +955,12 @@
 		cursor.  This is less clever than using |:ptag|, but you don't
 		need a tags file and it will also find matches in system
 		include files.  Example: >
-  :au! CursorHold *.[ch] nested exe "silent! psearch " . expand("<cword>")
+  :au! CursorHold *.[ch] ++nested exe "silent! psearch " . expand("<cword>")
 <		Warning: This can be slow.
 
 Example						*CursorHold-example*  >
 
-  :au! CursorHold *.[ch] nested exe "silent! ptag " . expand("<cword>")
+  :au! CursorHold *.[ch] ++nested exe "silent! ptag " . expand("<cword>")
 
 This will cause a ":ptag" to be executed for the keyword under the cursor,
 when the cursor hasn't moved for the time set with 'updatetime'.  The "nested"
@@ -973,7 +973,7 @@
 A nice addition is to highlight the found tag, avoid the ":ptag" when there
 is no word under the cursor, and a few other things: >
 
-  :au! CursorHold *.[ch] nested call PreviewWord()
+  :au! CursorHold *.[ch] ++nested call PreviewWord()
   :func PreviewWord()
   :  if &previewwindow			" don't do this in the preview window
   :    return