<a href="xaringan.html"><i class="fa fa-check"></i><b>17</b> xaringan</a></li>
<li class="chapter" data-level="18" data-path="remark-js-vs-xaringan.html"><a href="remark-js-vs-xaringan.html"><i class="fa fa-check"></i><b>18</b> remark.js vs xaringan</a></li>
<li class="chapter" data-level="19" data-path="math-expressions.html"><a href="math-expressions.html"><i class="fa fa-check"></i><b>19</b> Math Expressions</a></li>
<li class="chapter" data-level="20" data-path="r-code.html"><a href="r-code.html"><i cla