diff --git a/appendices/ini.xml b/appendices/ini.xml
index 3f33608deb..5bdada0e6b 100644
--- a/appendices/ini.xml
+++ b/appendices/ini.xml
@@ -10,6 +10,10 @@
    This list includes the &php.ini; directives you can set to configure your
    PHP setup.
   </para>
+  <para>
+   The "Changeable" column shows the modes determining when and where a directive may be set.  
+   See the <link linkend="configuration.changes.modes">Changeable mode values</link> section for their definitions.
+  </para>
   <para>
    <table>
     <title>Configuration options</title>