Acknowledgements
Paola Campadelli and Alberto Bertoni gave us much helpful advice and many suggestions.
Paolo Marelli, Fabio Cantarin, Alessandro Muiesan, Stefano Saccani, Giacomo Siliotti and Alessandro Trapella implemented some INNE modules as part of their thesis in Scienze dell'Informazione at the Università degli Studi di Milano.
Hewlett-Packard supported the CoLoS project in its beginning and for many years.