he-canvas.html
for webgl-utils, m3, m4, and webgl-lessons-ui.
-->
<script src="../../resources/webgl-lessons-ui.js"></script>
<script src="../../resources/webgl-utils.js"></script>
<script src="../../resources/lessons-helper.js"></script> <!-- you can and should delete this script. it is only used on the site to help with errors -->
<script src="../../resources/m3.js"></script>
<script src="diagram.js"></script>
<script>
"use strict";

function main() {
  const opt = getQueryParams();
  const lang = {
    l