Index: reference/spl/functions/spl-autoload-register.xml
===================================================================
--- reference/spl/functions/spl-autoload-register.xml	(revision 286314)
+++ reference/spl/functions/spl-autoload-register.xml	(working copy)
@@ -21,6 +21,12 @@
    spl_autoload_register() will effectively replace the engine cache for
    the __autoload function by either spl_autoload() or spl_autoload_call().
   </para>
+  <para>
+   If there must be multiple autoload functions, <function> 
+   spl_autoload_register</function> allows for this. It effectively creates a
+   queue of autoload functions, and runs through each of them in the order they 
+   are defined. By contrast, <function>__autoload</function> may only be 
+   defined once.
+  </para>
  </refsect1>
 
  <refsect1 role="parameters">