Reference:Atrus, crystal viewer message

Ah, my friend! Are you there? I hope you're receiving this. I'm barely getting you!

Listen, there is a terrible electromagnetic storm here. I can't leave Rime until it's over.

I know what you can do: In the desk in my bedroom, below the top drawer, there is a symbol. Press on it to open two compartments; the commentaries I wrote on Haven and Spire are inside.

Oh, and tell Yeesha not to forget her homework.