diff --git a/reference/outcontrol/functions/flush.xml b/reference/outcontrol/functions/flush.xml
index b8ec339502..d5dee991b6 100644
--- a/reference/outcontrol/functions/flush.xml
+++ b/reference/outcontrol/functions/flush.xml
@@ -56,6 +56,18 @@
   </para>
  </refsect1>
 
+ <refsect1 role="seealso">
+  &reftitle.seealso;
+  <para>
+   <simplelist>
+    <member><function>ob_flush</function></member>
+    <member><function>ob_clean</function></member>
+    <member><function>ob_end_flush</function></member>
+    <member><function>ob_end_clean</function></member>
+   </simplelist>
+  </para>
+ </refsect1> 
+
 </refentry>
 
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