diff --git a/reference/http/functions/headers-sent.xml b/reference/http/functions/headers-sent.xml
index 97fab7f39c..6f4d49f474 100644
--- a/reference/http/functions/headers-sent.xml
+++ b/reference/http/functions/headers-sent.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- splitted from ./en/functions/http.xml, last change in rev 1.7 -->
   <refentry id="function.headers-sent">
    <refnamediv>
@@ -9,8 +9,9 @@
    <refsect1>
     <title>Description</title>
      <methodsynopsis>
-      <type>bool</type><methodname>headers_sent</methodname>
-      <void/>
+      <type>bool</type><methodname>headers_sent</methodname>      
+      <methodparam><type>string</type><parameter>&amp;file</parameter></methodparam>
+      <methodparam choice="opt"><type>int</type><parameter>&amp;line</parameter></methodparam>
      </methodsynopsis>
     <para>
      This function returns &true; if the HTTP headers have already been
@@ -19,6 +20,17 @@
 		 already been sent. Using this function you can at least prevent
 		 getting the "Duplicate headers ..." error messages.
     </para>
+    <para>
+     The function will return the php source file and line number where
+     output started in the optional <parameter>file</parameter> and
+     <parameter>line</parameter> parameters if these are given.
+    </para>
+    <note>
+     <simpara>
+      <parameter>file</parameter> and <parameter>line</parameter> where
+      added for PHP 4.3.0.
+     </simpara>
+    </note>
     <para>
      See also <function>header</function> for a more detailed discussion
 		 of the matters involved.