Update runtime files.
diff --git a/runtime/doc/usr_06.txt b/runtime/doc/usr_06.txt
index e52d110..bcc0a2f 100644
--- a/runtime/doc/usr_06.txt
+++ b/runtime/doc/usr_06.txt
@@ -1,4 +1,4 @@
-*usr_06.txt* For Vim version 8.1. Last change: 2009 Oct 28
+*usr_06.txt* For Vim version 8.1. Last change: 2019 Jun 01
VIM USER MANUAL - by Bram Moolenaar
@@ -196,13 +196,12 @@
When editing another file (or the same one) the colors will come back.
- *:syn-off*
If you want to stop highlighting completely use: >
:syntax off
This will completely disable syntax highlighting and remove it immediately for
-all buffers.
+all buffers. See |:syntax-off| for more details.
*:syn-manual*
If you want syntax highlighting only for specific files, use this: >