User interface is a very common practice, so, many of us building software have experience in UI. And UI design best practices are very well documented. Dimitris Lyras, talking about UI on handheld devices at CHIGreece Conference, in the context of Usability in Human and Computer Interaction, November 26, 2021, mentions “as little as possible regarding the A to Z of UI” and emphasizes “more what may not be common practice…”