diff --git a/reference/runkit/sandbox.xml b/reference/runkit/sandbox.xml
index 9fad4c3269..faea312875 100644
--- a/reference/runkit/sandbox.xml
+++ b/reference/runkit/sandbox.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.15 $ -->
+<!-- $Revision: 1.16 $ -->
 <!-- Generated by xml_proto.php v2.2. Found in /scripts directory of phpdoc. -->
 <refentry id="runkit.sandbox">
  <refnamediv>
@@ -393,6 +393,20 @@ baz
        </entry>
        <entry><literal>0</literal> (Global)</entry>
       </row>
+      <row>
+       <entry><literal>parent_scope</literal></entry>
+       <entry><type>String</type></entry>
+       <entry>
+        When <literal>parent_scope</literal> is set to
+        a string value, it refers to a named array variable
+        in the global scope.  If the named variable does not
+        exist at the time of access it will be created as an
+        empty array.  If the variable exists but it not an array,
+        a dummy array will be created containing a reference
+        to the named global variable.
+       </entry>
+       <entry></entry>
+      </row>
      </tbody>
     </tgroup>
    </table>