71663 - on selected event for cavas
d20.engine.selected() -> selected tokens
d20.models.Graphic -> token model (obfuscated name is c) obfuscated d -> canvas token view with drawing (mutate updateBackdrops for layer info drawing) (hook point "}n.restore()}")
renderAll() "a" varible stores tokens for rendering
some models can listen for events: .on("change:${attributeName}", (e) => ....
Auth cookie: "rack.session"