Also it demonstrates how to send pieces of JS code to the browser via Websocket.
This is just demo code shown in my websocket/webgl video by Sungmin Park.
It's very experimental level.
Start REPL and do:
(load "load.lisp")
Then open "examples.lisp" and eval forms upto this line:
;;; open your webbrowser. then go to 127.0.0.1:8080/ws-repl.html
Open the page in the browser. It will connect back to the Lisp via a websocket and will wait for the commands.
Continue evaluating forms one by one and on the final form you should see an animation. Now you can play with DRAW-SCENE function. For example, try to change a number of loops in DOTIMES form.