diff --git a/ChangeLog b/ChangeLog
index c1af814b..0dc5ad13 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -16263,3 +16263,6 @@
 	* Added the Operations Guide to 'rivendell.spec.in'.
 2017-11-06 Fred Gleason <fredg@paravelsystems.com>
 	* Moved the contents of 'docs/catchd.txt' to 'docs/apis/catchd.xml.'
+2017-11-06 Fred Gleason <fredg@paravelsystems.com>
+	* Moved the contents of 'docs/MESSAGE_BOX.txt' to the
+	Operation Guide.
diff --git a/docs/MESSAGE_BOX.txt b/docs/MESSAGE_BOX.txt
deleted file mode 100644
index ef9495be..00000000
--- a/docs/MESSAGE_BOX.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-                          Message Box RML Notes
-
-When using the 'Message Box' ['MB'} RML, it may be necessary to configure
-the X server to allow local connections from other processes.  One way to
-do this is to execute the following command as the local Rivendell user:
-
-   xhost +local:
-
-For more information, see the xhost(1) man page.
diff --git a/docs/Makefile.am b/docs/Makefile.am
index 6e014b1a..818cefb2 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -31,7 +31,6 @@ EXTRA_DIST = ALSA.txt\
              asound.conf-sample\
              colors\
              copy_split_format.odt\
-             MESSAGE_BOX.txt\
              NEXGEN_FILTER.txt\
              NOW+NEXT.txt\
              pam_rd.txt\
diff --git a/docs/opsguide/rml.xml b/docs/opsguide/rml.xml
index 4d973efb..d82c8ed1 100644
--- a/docs/opsguide/rml.xml
+++ b/docs/opsguide/rml.xml
@@ -1210,6 +1210,19 @@
 	<listitem>Critical</listitem>
       </varlistentry>
     </variablelist>
+    <para>
+      When using the 'Message Box' ['<userinput>MB</userinput>'] RML,
+      it may be necessary to configure the X server to allow local
+      connections from other processes.  One way to
+      do this is to execute the following command as the local Rivendell user:
+    </para>
+    <para>
+      <userinput>xhost +local:</userinput>
+    </para>
+    <para>	
+      For more information, see the
+      <command>xhost</command><manvolnum>1</manvolnum> man page.
+    </para>
   </sect2>
 
   <sect2 xml:id="sect.rml.pause_panel__pu_">
diff --git a/rivendell.spec.in b/rivendell.spec.in
index 1b223849..65d9d18d 100644
--- a/rivendell.spec.in
+++ b/rivendell.spec.in
@@ -382,7 +382,6 @@ rm -rf $RPM_BUILD_ROOT
 %doc docs/colors 
 %doc docs/ripc.txt 
 %doc docs/pam_rd.txt
-%doc docs/MESSAGE_BOX.txt
 %doc docs/tables/audio_perms.txt 
 %doc docs/tables/audio_ports.txt 
 %doc docs/tables/cart.txt