--- a/doc/book/en/A020-tutorial.en.txt	Thu Apr 23 11:58:11 2009 -0700
+++ b/doc/book/en/A020-tutorial.en.txt	Thu Apr 23 12:03:24 2009 -0700
@@ -17,10 +17,9 @@
 An `instance` is a specific installation of an application and includes
 configuration files.
 
-This tutorial will first discuss how easy it is to build a new `instance` based on
-existing `cubes`. Then we'll see how we can develop new `cube`. We'll conclude
-by illustrating the flexibility of the framework that enable us to
-entirely customize your `instance`.
+
+This tutorial will show how to create a `cube` and how to use it as an
+application to run an `instance`.
 
 .. include:: Z013-blog-less-ten-minutes.en.txt
 .. include:: A02a-create-cube.en.txt