diff --git a/doc/training-guides/openstack.ent b/doc/training-guides/openstack.ent
index 584efa60..4ae0f0cf 100644
--- a/doc/training-guides/openstack.ent
+++ b/doc/training-guides/openstack.ent
@@ -1,9 +1,13 @@
-
+<!-- The master of this file is in openstack-manuals repository, file
+     doc/common/entities/openstack.ent.
+     Any changes to the master file will override changs in other
+     repositories. -->
 <!-- Some useful entities borrowed from HTML -->
 <!ENTITY ndash  "&#x2013;">
 <!ENTITY mdash  "&#x2014;">
 <!ENTITY nbsp "&#160;">
 <!ENTITY times "&#215;">
+<!ENTITY hellip "&#133;">
 
 <!ENTITY CHECK '<inlinemediaobject xmlns="http://docbook.org/ns/docbook">
 <imageobject>