diff --git a/reference/outcontrol/functions/output-add-rewrite-var.xml b/reference/outcontrol/functions/output-add-rewrite-var.xml
index 0acf8a9422..1d538607f5 100755
--- a/reference/outcontrol/functions/output-add-rewrite-var.xml
+++ b/reference/outcontrol/functions/output-add-rewrite-var.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.8 $ -->
+<!-- $Revision: 1.9 $ -->
   <refentry id="function.output-add-rewrite-var">
    <refnamediv>
     <refname>output_add_rewrite_var</refname>
@@ -19,7 +19,8 @@
      The name and value will be added to URLs (as GET parameter) and forms 
      (as hidden input fields) the same way as the session ID when transparent
      URL rewriting is enabled with <link
-      linkend="ini.session.use-trans-sid">session.use_trans_sid</link>.
+      linkend="ini.session.use-trans-sid">session.use_trans_sid</link>. Please
+     note that absolute URLs (http://example.com/..) aren't rewritten.
     </para>
     <para>
      This functions behavior is controlled by the <link
@@ -40,8 +41,9 @@
 <?php
 output_add_rewrite_var('var', 'value');
 
-// a link
-echo '<a href="file.php">link</a>';
+// some links
+echo '<a href="file.php">link</a>
+<a href="http://example.com">link2</a>';
 
 // a form
 echo '<form action="script.php" method="post">
@@ -56,6 +58,7 @@ print_r(ob_list_handlers());
       <screen>
 <![CDATA[
 <a href="file.php?var=value">link</a>
+<a href="http://example.com">link2</a>
 
 <form action="script.php" method="post">
 <input type="hidden" name="var" value="value" />