<h1>Notebook</h1><!-- a comment --><div class="x">raw *html*</div><p>Inline $a_1 + b_2$ and $$E=mc^2$$ and <span>raw</span>.</p><p>$$\sum_{i=1}^n x_i$$</p><table><thead><tr><th align="center">a</th><th>b</th></tr></thead><tbody><tr><td align="center">1</td><td>2</td></tr></tbody></table><ul class="contains-task-list"><li class="task-list-item"><input type="checkbox" disabled=""> task</li></ul><p>Note<sup><a href="#user-content-fn-1" id="user-content-fnref-1" data-footnote-ref="" aria-describedby="footnote-label">1</a></sup></p><p><a href="other-note">rel</a> <a href="">empty</a></p><section data-footnotes="" class="footnotes"><h2 class="sr-only" id="footnote-label">Footnotes</h2><ol><li id="user-content-fn-1"><p>A note. <a href="#user-content-fnref-1" data-footnote-backref="" aria-label="Back to reference 1" class="data-footnote-backref">↩</a></p></li></ol></section>
<h1>Notebook</h1>
<!-- a comment -->
<div class="x">raw *html*</div>
<p>Inline $a_1 + b_2$ and $$E=mc^2$$ and <span>raw</span>.</p>
<p>$$
\sum_{i=1}^n x_i
$$</p>
<table>
<thead>
<tr>
<th align="center">a</th>
<th>b</th>
</tr>
</thead>
<tbody>
<tr>
<td align="center">1</td>
<td>2</td>
</tr>
</tbody>
</table>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" disabled=""> task</li>
</ul>
<p>Note<sup><a href="#user-content-fn-1" id="user-content-fnref-1" data-footnote-ref="" aria-describedby="footnote-label">1</a></sup></p>
<p><a href="other-note">rel</a> <a href="">empty</a></p>
<section data-footnotes="" class="footnotes"><h2 class="sr-only" id="footnote-label">Footnotes</h2>
<ol>
<li id="user-content-fn-1">
<p>A note. <a href="#user-content-fnref-1" data-footnote-backref="" aria-label="Back to reference 1" class="data-footnote-backref">↩</a></p>
</li>
</ol>
</section>