diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index 07674a08cb..cf39e0a4f4 100644
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -2,7 +2,7 @@
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.0//EN"
                "http://www.oasis-open.org/docbook/xml/4.0/docbookx.dtd">
 
-<!-- File: $Id: Bv9ARM-book.xml,v 1.183 2001/12/14 18:29:10 gson Exp $ -->
+<!-- File: $Id: Bv9ARM-book.xml,v 1.184 2002/01/05 01:26:10 gson Exp $ -->
 
 <book>
 <title>BIND 9 Administrator Reference Manual</title>
@@ -2329,6 +2329,11 @@ installed.
       <acronym>BIND</acronym> 8 configuration file, it is ignored
       and a warning is logged.</para>
 
+<para>
+To disable the command channel, use an empty <command>controls</command>
+statement: <command>controls { };</command>.
+</para>
+
     </sect2>
     <sect2>
       <title><command>include</command> Statement Grammar</title>