- add  xmlns:xi="http://www.w3.org/2001/XInclude" on top tag 
  in files whith include directives

- change <include file="notes"></include> <xi:include href="notes.xml"/>

- change <image file="a"/> to <image file="a.gif"/>

- remove chapers directly in the book and put them in the part instead

-change title to just the application name

- fix codeinclude : xml --> xmlsrc