# course · ## unit · ### week · #### day · - Kind: title @libslug for an item · plain lines are notes ·  is an image. JSON decks: frames nest under kids. A kid with ref:"gilgamesh" pulls ../library/gilgamesh.json in. Omit x/y/w/h and the engine lays kids out in a grid. routes are named ordered id lists. Body is HTML; link to a frame with href="#id", to another deck with href="?deck=slug#id".