Update runtime files.
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 5587edc..b97eb16 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt* For Vim version 7.4. Last change: 2015 Feb 22
+*syntax.txt* For Vim version 7.4. Last change: 2015 Mar 20
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -4648,6 +4648,8 @@
Note that for some color terminals these names may result in the wrong
colors!
+ You can also use "NONE" to remove the color.
+
*:hi-normal-cterm*
When setting the "ctermfg" or "ctermbg" colors for the Normal group,
these will become the colors used for the non-highlighted text.