click really fast in the text "Thinking outside of the box, arent we?"
although theres nothing to do in there, if you found a notebook, it js take you back to 1/7 notebooks. thanks for asking!
as of it, it also reveals a secret messages quitelly needed to decode, but, the last message said that subterbaldi crashed? but it let me continue playing...
it has nothing to interact with it, its just standing there....