Thank you and thanks for the feedback!
You’re right about the notes X button. It’s something I added unthinkingly when I was working on it and trying to test out the notes functionality, but it’s much less useful for a real player. I got rid of the button. Thanks for bringing it up!
Exiting the full-screen game is something that’s more controlled by itch.io than the game itself, unfortunately. The back button works, as does refresh.