This would be a great Blockly[0] demo<p>[0]: <a href="https:&#x2F;&#x2F;developers.google.com&#x2F;blockly&#x2F;?hl=en" rel="nofollow">https:&#x2F;&#x2F;developers.google.com&#x2F;blockly&#x2F;?hl=en</a>