Video tutorials are a great onboarding for new users and developers. They can be integrated into the documentation as an easy starting-point for each chapter:

• Typemill setup (typemill setup, settings, plugins, themes)
• Short demonstration for authors (editors, page creation)
• Tutorial theme development
• Tutorial plugin development

My english is not good enough, so on

In a mail conversation in [alan-if] Tristano asked about how Add works and how you can use that wrt. inheritance. Here are some highlights

• the manual indicates that you can Add , you probably cannot and possibly also should not
• there is no explanation was Add actually does, it should at least say something like "adding like as if you had written that in the class declaration d