diff --git a/functions/strings.xml b/functions/strings.xml
index 561240ceb4..67c566ccb8 100644
--- a/functions/strings.xml
+++ b/functions/strings.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.142 $ -->
+<!-- $Revision: 1.143 $ -->
  <reference id="ref.strings">
   <title>String functions</title>
   <titleabbrev>Strings</titleabbrev>
@@ -754,11 +754,6 @@ $original = strtr($str, $trans);
      </informalexample>
       The content of <literal>$original</literal> would be: "Hallo &amp;
       &lt;Frau> &amp; Kr&auml;mer".
-     <note>
-      <para>
-       This function was added in PHP 4.0.
-      </para> 
-     </note>
     </para>
     <para>
      See also: <function>htmlspecialchars</function>,
@@ -914,12 +909,13 @@ $original = strtr($str, $trans);
     </para>
     <para>
      At present, the ISO-8859-1 character set is used as default.
-     Note that the optional second argument was added in PHP 3.0.17
-     and PHP 4.0.3.
+     Support for the optional second argument was added in PHP 3.0.17 and PHP
+     4.0.3.
     </para>
     <para>
      Like <function>htmlspecialchars</function>, it takes an optional
      third argument which defines character set used in conversion.
+     Support for this argument was added in PHP 4.1.0.
     </para>
     <para>
      See also <function>htmlspecialchars</function> and
@@ -1012,12 +1008,13 @@ $new = htmlspecialchars("<a href='test'>Test</a>", ENT_QUOTES);
     <para>
      Note that this function does not translate anything beyond what
      is listed above. For full entity translation, see
-     <function>htmlentities</function>.  Also note that the optional
+     <function>htmlentities</function>.  Support for the optional
      second argument was added in PHP 3.0.17 and PHP 4.0.3.
     </para>
     <para>
      The third argument defines character set used in conversion. The
-     default character set is ISO-8859-1.
+     default character set is ISO-8859-1. Support for this third argument was
+     added in PHP 4.1.0.
     </para>
     <para>
      See also <function>htmlentities</function> and