diff --git a/documentation/poky-ref-manual/ref-variables.xml b/documentation/poky-ref-manual/ref-variables.xml
index e411ceb9c0..8663cc463c 100644
--- a/documentation/poky-ref-manual/ref-variables.xml
+++ b/documentation/poky-ref-manual/ref-variables.xml
@@ -480,11 +480,31 @@
             </glossdef>
         </glossentry>
 
+        <glossentry id='var-DISTRO_EXTRA_RDEPENDS'><glossterm>DISTRO_EXTRA_RDEPENDS</glossterm>
+            <glossdef>
+                <para>
+                    Specifies a list of distro-specific packages to add to all images.
+                    This variable takes affect through 
+                    <filename>packagegroup-base</filename> so the 
+                    variable only really applies to the more full-featured 
+                    images that include <filename>packagegroup-base</filename>.
+                    You can use this variable to keep distro policy out of 
+                    generic images.
+                    As with all other distro variables, you set this variable
+                    in the distro <filename>.conf</filename> file.
+                </para>
+            </glossdef>
+        </glossentry>
+
         <glossentry id='var-DISTRO_EXTRA_RRECOMMENDS'><glossterm>DISTRO_EXTRA_RRECOMMENDS</glossterm>
             <glossdef>
-                <para></para>
-                <para>The list of packages which extend usability of the image. 
-                    Those packages will automatically be installed but can be removed by user.</para>
+                <para>
+                    Specifies a list of distro-specific packages to add to all images 
+                    if the packages exist. 
+                    The packages might not exist or be empty (e.g. kernel modules).
+                    The list of packages are automatically installed but can be 
+                    removed by the user.
+                </para>
             </glossdef>
         </glossentry>