[master] afbdcbb Note that directors stack.

[Per Buer]

commit afbdcbb88b37873e5ffac4e1c9a30713cc1e928c
Author: Per Buer <perbu at varnish-software.com>
Date:   Thu Mar 20 11:27:29 2014 +0100

    Note that directors stack.

diff --git a/doc/sphinx/reference/vcl.rst b/doc/sphinx/reference/vcl.rst
index 321c251..942d1ac 100644
--- a/doc/sphinx/reference/vcl.rst
+++ b/doc/sphinx/reference/vcl.rst
@@ -208,6 +208,9 @@ are available:
     Varnish reaches the maximum Varnish it will start failing
     connections.
 
+Backends can be used with *directors*. Please see the
+vmod_directors(3) man page for more information.
+
 Probes
 ------