diff --git a/appendices/wrappers.xml b/appendices/wrappers.xml
index 6e281edd75..e02ea08cf5 100644
--- a/appendices/wrappers.xml
+++ b/appendices/wrappers.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.51 $ -->
+<!-- $Revision: 1.52 $ -->
 <appendix id="wrappers">
  <title>List of Supported Protocols/Wrappers</title>
  <para>
@@ -95,6 +95,59 @@
   </para>
  </section>
 
+ <section id="wrappers.socket">
+  <title>Socket</title>
+  <para>
+   This section contains the context option supported on wrappers that work
+   over sockets, like <literal>tcp</literal>, <literal>http</literal> or
+   <literal>ftp</literal>.
+  </para>
+  <para>
+   As of PHP 5.1.0 only one option is supported, <literal>bindto</literal>,
+   which can be used to specify the IP address (either IPv4 or IPv6) and/or
+   the port number that PHP will use to access the network. The syntax is
+   <literal>ip:port number</literal> (you can set the IP or the port number to
+   <literal>0</literal> if you want to let the system choose them for you).
+  </para>
+  <note>
+   <para>
+    As FTP creates two socket connections during normal operation, you cannot
+    specify the port number in the <literal>bindto</literal> option. So, the
+    only supported syntax is <literal>ip:0</literal> for the FTP wrapper.
+   </para>
+  </note>
+  <example>
+   <title>Some examples of how to use the bindto option</title>
+   <programlisting role="php">
+<![CDATA[
+<?php
+// connect to the internet using the '192.168.0.100' IP
+$opts = array('socket' =>
+            array('bindto' => '192.168.0.100:0'));
+
+
+// connect to the internet using the '192.168.0.100' IP and port '7000'
+$opts = array('socket' =>
+            array('bindto' => '192.168.0.100:7000'));
+
+
+// connect to the internet using port '7000'
+$opts = array('socket' =>
+            array('bindto' => '0:7000'));
+
+
+// create the context...
+$context = stream_context_create($opts);
+
+// ...and use it to fetch the data
+echo file_get_contents('http://www.example.com', false, $context);
+
+?>
+]]>
+   </programlisting>
+  </example>
+ </section>
+
  <section id="wrappers.http">
   <title>HTTP and HTTPS</title>
    <simpara>PHP 3, PHP 4, PHP 5. <filename>https://</filename> since PHP 4.3.0</simpara>