diff --git a/reference/libevent/functions/event-buffer-set-callback.xml b/reference/libevent/functions/event-buffer-set-callback.xml
new file mode 100644
index 0000000000..9e03915c02
--- /dev/null
+++ b/reference/libevent/functions/event-buffer-set-callback.xml
@@ -0,0 +1,103 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- $Revision: 297028 $ -->
+<refentry xml:id="function.event-buffer-new" xmlns="http://docbook.org/ns/docbook">
+ <refnamediv>
+  <refname>event_buffer_set_callback</refname>
+  <refpurpose>Set or reset callbacks for a buffered event</refpurpose>
+ </refnamediv>
+ 
+ <refsect1 role="description">
+  &reftitle.description;
+  <methodsynopsis>
+   <type>resource</type><methodname>event_buffer_set_callback</methodname>
+   <methodparam><type>resource</type><parameter>event</parameter></methodparam>
+   <methodparam><type>mixed</type><parameter>readcb</parameter></methodparam>
+   <methodparam><type>mixed</type><parameter>writecb</parameter></methodparam>
+   <methodparam><type>mixed</type><parameter>errorcb</parameter></methodparam>
+   <methodparam choice="opt"><type>mixed</type><parameter>arg</parameter></methodparam>
+  </methodsynopsis>
+  <para>
+   Sets or changess existing callbacks for the buffered <parameter>event</parameter>.
+  </para>
+ </refsect1>
+
+ <refsect1 role="parameters">
+  &reftitle.parameters;
+  <para>
+   <variablelist>
+    <varlistentry>
+     <term><parameter>event</parameter></term>
+     <listitem>
+      <para>
+       Valid buffered event resource.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>readcb</parameter></term>
+     <listitem>
+      <para>
+       Callback to invoke where there is data to read, or <type>NULL</type> if
+       no callback is desired.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>writecb</parameter></term>
+     <listitem>
+      <para>
+       Callback to invoke where the descriptor is ready for writing, 
+       or <type>NULL</type> if no callback is desired.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>errorcb</parameter></term>
+     <listitem>
+      <para>
+       Callback to invoke where there is an error on the descriptor, cannot be
+       <type>NULL</type>.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>arg</parameter></term>
+     <listitem>
+      <para>
+       An argument that will be passed to each of the callbacks (optional).
+      </para>
+     </listitem>
+    </varlistentry>
+   </variablelist>
+  </para>
+ </refsect1>
+
+ <refsect1 role="returnvalues">
+  &reftitle.returnvalues;
+  <para>
+   <function>event_buffer_set_callback</function> returns &true; on success or &false; on failure.
+  </para>
+ </refsect1>
+
+</refentry>
+
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"~/.phpdoc/manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->
diff --git a/reference/libevent/functions/event-set.xml b/reference/libevent/functions/event-set.xml
index 74c429da60..c328cced30 100644
--- a/reference/libevent/functions/event-set.xml
+++ b/reference/libevent/functions/event-set.xml
@@ -11,7 +11,7 @@
   <methodsynopsis>
    <type>bool</type><methodname>event_set</methodname>
    <methodparam><type>resource</type><parameter>event</parameter></methodparam>
-   <methodparam><type>resource</type><parameter>fd</parameter></methodparam>
+   <methodparam><type>mixed</type><parameter>fd</parameter></methodparam>
    <methodparam><type>int</type><parameter>events</parameter></methodparam>
    <methodparam><type>mixed</type><parameter>callback</parameter></methodparam>
    <methodparam choice="opt"><type>mixed</type><parameter>arg</parameter></methodparam>
@@ -21,9 +21,14 @@
    is prepared to call the function specified by the <parameter>callback</parameter> 
    on the events specified in parameter <parameter>events</parameter>, which
    is a set of the following flags: <constant>EV_TIMEOUT</constant>, 
-   <constant>EV_SIGNAL</constant>, <constant>EV_READ</constant> and
-   <constant>EV_WRITE</constant>.
+   <constant>EV_SIGNAL</constant>, <constant>EV_READ</constant>, 
+   <constant>EV_WRITE</constant>, <constant>EV_PERSIST</constant> and
+   <constant>EV_SIGNAL</constant>.
   </para> 
+  <para>
+   If <constant>EV_SIGNAL</constant> bit is set in parameter <parameter>events</parameter>,
+   the <parameter>fd</parameter> is interpreted as signal number.
+  </para>
   <para>
    After initializing the event, use <function>event_base_set</function> to
    associate the event with its event base.
@@ -36,7 +41,7 @@
      <term><parameter>fd</parameter></term>
      <listitem>
       <para>
-       Resource indicating the stream.
+       Signal number or resource indicating the stream.
       </para>
      </listitem>
     </varlistentry>
@@ -44,9 +49,10 @@
      <term><parameter>events</parameter></term>
      <listitem>
       <para>
-       A flag indicating the event. Can be one of the following:
+       A flag indicating the event. Consists of the following flags:
        <constant>EV_TIMEOUT</constant>, <constant>EV_SIGNAL</constant>, 
-       <constant>EV_READ</constant> or <constant>EV_WRITE</constant>.
+       <constant>EV_READ</constant>, <constant>EV_WRITE</constant>,
+       <constant>EV_PERSIST</constant> and <constant>EV_SIGNAL</constant>.
       </para>
      </listitem>
     </varlistentry>