A framework to identify primitives that represent usability within Model-Driven Development methods

Context: Nowadays, there are sound methods and tools which implement the Model-Driven Develop-ment approach (MDD) satisfactorily. However, MDD approaches focus on representing and generating code that represents functionality, behaviour and persistence, putt ing the interaction, and more specifically the usability, i n a second place. If we aim to include usability features in a system developed w i th a MDD tool, we need to extend manually the