diff --git a/internals2/funcs/index.xml b/internals2/funcs/index.xml
index 89cb009ce5..e195605d40 100644
--- a/internals2/funcs/index.xml
+++ b/internals2/funcs/index.xml
@@ -1,8 +1,11 @@
 <?xml version="1.0" encoding="ISO-8859-1" ?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
  <chapter xml:id="internals2.funcs" xmlns="http://docbook.org/ns/docbook">
   <title>Writing functions</title>
   <para>
+  Also known as a Glue language, PHP can be easily extended. And writing
+functions is undoubtedly one of the most important aspects of extension
+writing.  
   </para>
  </chapter>