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diff --git a/LNETSelfTest.xml b/LNETSelfTest.xml
index 119f8a5..6e13922 100644
--- a/LNETSelfTest.xml
+++ b/LNETSelfTest.xml
@@ -174,6 +174,17 @@ lst end_session</screen>
       <title>Session Commands</title>
       <para>This section describes <literal>lst</literal> session commands.</para>
       <para><emphasis role="bold">
+          <literal>LST_FEATURES</literal>
+        </emphasis></para>
+	<para>The <literal>lst</literal> utility uses the <literal>LST_FEATURES</literal> environmental variable to determine what optional features should be enabled.  All features are disabled by default.  The supported values for <literal>LST_FEATURES</literal> are:</para>
+	<itemizedlist>
+	  <listitem>
+	    <para><emphasis role="bold"><literal>1</literal> -</emphasis>  Enable the Variable Page Size feature for LNet Selftest.</para>
+	  </listitem>
+	</itemizedlist>
+	<para>Example:</para>
+	<screen>export LST_FEATURES=1</screen>
+      <para><emphasis role="bold">
           <literal>LST_SESSION</literal>
         </emphasis></para>
       <para>The <literal>lst</literal> utility uses the <literal>LST_SESSION</literal> environmental variable to identify the session locally on the self-test console node. This should be a numeric value that uniquely identifies all session processes on the node. It is convenient to set this to the process ID of the shell both for interactive use and in shell scripts. Almost all <literal>lst</literal> commands require <literal>LST_SESSION</literal> to be set.</para>