TODOs:
* Remove the awful tables in interaction.html (that I wrote)
* Move all style to css
- * Create links to get code
- * Consider moving HTML to HTML files that are read via XMLHTTP
* Add margin-left: 30px to #workarea, and then make #workarea h2 { margin-left: -30px}
- * Replace <input type='button'> with <button>
- * Standard width. No need for very wide graphs.
* Remove runtime warnings.
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