Better sleep score charts explanation

The charts at the top of the graph have too little explanation, and tapping them opens a message about limitations in the free version.
The documentation link from the help menu is too long and only belongs to the graph.

The app needs a more intuitive place for the explanation of the score graphs, directly in the app.

Ideally, pressing each should explain what it is - pressing something unknown is the most intuitive thing to do in order to understand what it is.

support conversation with Liran