Yeah, it kind of blows my mind at how ergonomic it is. It's also recursive, if you hover over a link within a pop-over box, it'll open up another pop-over box,

Yeah, it kind of blows my mind at how ergonomic it is. It's also recursive, if you hover over a link within a pop-over box, it'll open up another pop-over box, you can just keep going deeper into the rabbit-hole without ever leaving the main text.