Update runtime files.
diff --git a/runtime/doc/usr_30.txt b/runtime/doc/usr_30.txt
index fa39dbf..79fcf7b 100644
--- a/runtime/doc/usr_30.txt
+++ b/runtime/doc/usr_30.txt
@@ -640,4 +640,4 @@
 
 Next chapter: |usr_31.txt|  Exploiting the GUI
 
-Copyright: see |manual-copyright|  vim:tw=78:ts=8:ft=help:norl:
+Copyright: see |manual-copyright|  vim:tw=78:ts=8:noet:ft=help:norl: