diff --git a/language/variables.xml b/language/variables.xml
index 90d8cd8a83..6f5d1d9bed 100644
--- a/language/variables.xml
+++ b/language/variables.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.47 $ -->
+<!-- $Revision: 1.48 $ -->
  <chapter id="language.variables">
   <title>Variables</title>
   
@@ -156,6 +156,12 @@ $bar = &test();    // Invalid.
     <link linkend="reserved.variables">Predefined variables</link>.
    </simpara>
 
+   <para>
+    If certain variables in <link
+    linkend="ini.variables-order">variables_order</link> are not set, their
+    appropriate superglobal arrays are also left empty.
+   </para>
+
    <variablelist id="language.variables.superglobals">
     <title>PHP Superglobals</title>
     <varlistentry>