Really interesting project and looking forward to having time to play a bit more with it. After trying it for the first time and reading the documentation I have the impression that the `alt` key is used a lot as a modifier key for basic things such as selecting inner objects. One thing I love about Vi and Vim is that most it tries to reduce the usage of modifier keys which is awesome when you are touch typing. I would love to know why the author chose the `alt` key and what the other options were. That's a great project and I'm sure it could help a lot of developers to understand modal mode. Great work!