I give a crap about it. It looks like tablature for an isomorphic keyboard, which seems kind of useful for learning, assuming you have like a Lumatone or a Janko Piano keyboard. There's similar keyboard challenges for instruments like Bandoneon that benefit from learning apps like, like https://bandoneon.app/. For my own current work, I've switched from Classic to Modern Notation in Dorico because there are so many alterations in jazz voicings with a constant stream of key changes that it just seems easier to wipe the key signature clean and alter everything. Also, I've heard that's what they do in movie scores where it's important to get things right in as few takes as possible. Blargh, now I'm rambling. I'll allow it.