diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 83706ab551..d0c02d392b 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -9432,6 +9432,12 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                     versioning scheme changes in some backwards incompatible
                     way.
                 </para>
+
+                <para>
+                    <filename>PE</filename> is the default value of the
+                    <link linkend='var-PKGE'><filename>PKGE</filename></link>
+                    variable.
+                </para>
             </glossdef>
         </glossentry>
 
@@ -9647,13 +9653,13 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
 
         <glossentry id='var-PKGV'><glossterm>PKGV</glossterm>
             <info>
-                PKGV[doc] = "The version of the output package built by the OpenEmbedded build system."
+                PKGV[doc] = "The version of the output package built by the recipe."
             </info>
             <glossdef>
                 <para role="glossdeffirst">
 <!--                <para role="glossdeffirst"><imagedata fileref="figures/define-generic.png" /> -->
                     The version of the output package built by the
-                    OpenEmbedded build system.
+                    recipe.
                     By default, <filename>PKGV</filename> is set to
                     <link linkend='var-PV'><filename>PV</filename></link>.
                  </para>
@@ -9802,9 +9808,11 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                         The OpenEmbedded build system does not need the aid of
                         <filename>PR</filename> to know when to rebuild a
                         recipe.
-                        The build system uses
-                        <link linkend='var-STAMP'><filename>STAMP</filename></link>
-                        and the
+                        The build system uses the task
+                        <ulink url='&YOCTO_DOCS_BB_URL;#checksums'>input checksums</ulink>
+                        along with the
+                        <link linkend='structure-build-tmp-stamps'>stamp</link>
+                        and
                         <link linkend='shared-state-cache'>shared state cache</link>
                         mechanisms.
                     </note>
@@ -10162,12 +10170,19 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                     The version of the recipe.
                     The version is normally extracted from the recipe filename.
                     For example, if the recipe is named
-                    <filename>expat_2.0.1.bb</filename>, then the default value of <filename>PV</filename>
-                    will be "2.0.1".
+                    <filename>expat_2.0.1.bb</filename>, then the default value
+                    of <filename>PV</filename> will be "2.0.1".
                     <filename>PV</filename> is generally not overridden within
-                    a recipe unless it is building an unstable (i.e. development) version from a source code repository
+                    a recipe unless it is building an unstable (i.e.
+                    development) version from a source code repository
                     (e.g. Git or Subversion).
                  </para>
+
+                 <para>
+                     <filename>PV</filename> is the default value of the
+                     <link linkend='var-PKGV'><filename>PKGV</filename></link>
+                     variable.
+                 </para>
             </glossdef>
         </glossentry>