1 files changed, 15 insertions, 0 deletions

diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 83d4c1bf85..2743059c0c 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -797,6 +797,21 @@
             <listitem><para><emphasis><filename>perms:</filename></emphasis>
                 Currently, this check is unused but reserved.
                 </para></listitem>
+            <listitem><para><emphasis><filename>version-going-backwards:</filename></emphasis>
+                If Build History is enabled, reports when a package
+                being written out has a lower version than the previously 
+                written package under the same name.
+                If you are placing output packages into a feed and
+                upgrading packages on a target system using that feed, the 
+                version of a package going backwards can result in the target 
+                system not correctly upgrading to the "new" version of the 
+                package. 
+                <note>
+                    If you are not using runtime package management on your 
+                    target system, then you do not need to worry about
+                    this situation.
+                </note>
+                </para></listitem>
         </itemizedlist>
     </para>
 </section>