diff --git a/reference/session/ini.xml b/reference/session/ini.xml
index 15b0c22be2..edb77216a5 100644
--- a/reference/session/ini.xml
+++ b/reference/session/ini.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.44 $ -->
+<!-- $Revision: 1.45 $ -->
 <section id="session.configuration">
  &reftitle.runtime;
  &extension.runtime;
@@ -193,7 +193,10 @@
      <literal>session.save_handler</literal> defines the name of the
      handler which is used for storing and retrieving data
      associated with a session. Defaults to
-     <literal>files</literal>. See also
+     <literal>files</literal>. Note that individual extensions may register
+     their own <literal>save_handler</literal>s; registered handlers can be
+     obtained on a per-installation basis by referring to
+     <function>phpinfo</function>. See also
      <function>session_set_save_handler</function>.
     </simpara>
    </listitem>