How to modify an extension:

1) cd myextensionfolder  
   eg: cd UrbanTemplateOO/

2) Edit the file of your choice, modify the code, etc. Python files are in ./python.
   eg: vim Python/config.xml

3) Open the file "myextension.odt" with openoffice or libreoffice. (eg: libreoffice3.4 UrbanTemplateOO.odt & )
   Accept to enable macros.
   Go to the page 5 and push the button "Run macro: myExtension"
   The OO extension file "myextension.oxt" has been created/overwritten.

4) Double click on it to re-install it and restart libreoffice to check your changes.
