ib/auto-render.min.js"
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        onload="renderMathInElement(document.body);"></script>
    <!-- Ace editor-->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.4.12/ace.js"></script>

    <style>
        h2 {
            border-bottom:1px solid #CCC;
        }
    </style>
    <script>
        document.addEventListener("DOMContentLoaded", function () {
            renderMathInElemen