CLASS Extensions

http://kostaschristodoulou.blogspot.com/2012/03/class-extensions-version-2-released.html

Here you can find a detailed description of what the package includes.

http://kostaschristodoulou.blogspot.com/2012/03/class-extensions-version-2-demo.html

Here you can find links to video demostration of the capabilites of the extensions.