diff --git a/appendices/about.xml b/appendices/about.xml
index 280793c8ce..c55561a00a 100644
--- a/appendices/about.xml
+++ b/appendices/about.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.38 $ -->
+<!-- $Revision: 1.39 $ -->
 
 <appendix id="about">
  <title>About the manual</title>
@@ -290,6 +290,13 @@ Returns the length of string.
    Explanation is often added for features not available in the current
    PHP release, but which will be available in a known future PHP version.
   </para>
+  <para>
+   Many times the PHP manual lists "Default Values" for PHP directives. These 
+   values are based on <filename>php.ini-dist</filename> and not 
+   <filename>php.ini-recommended</filename>. They also refer to the latest  
+   version of PHP. See the <link linkend="ini.list">PHP directive 
+   appendix</link> for details on these values and changes.
+  </para>
  </sect1>
    
  <sect1 id="about.more">