Hello again. Because things evolve fast, I'm keeping track of my changes in this document, instead of posting here everytime. Here's the document: https://docs.google.com/document/d/1SYhvRR1um_U8fRH2aVot6ljc9MNFOecX50yE_Y2DSvk/edit?usp=drivesdk Please, read it and share your thoughts. Bye, Mario. Ciao, Mario.