="#cb17-1"></a>chapters_parsed <span class="ot">&lt;-</span> chapters_gamma <span class="sc">%&gt;%</span></span>
<span id="cb17-2"><a href="#cb17-2"></a>    <span class="fu">separate</span>(document, <span class="fu">c</span>(<span class="st">"title"</span>, <span class="st">"chapter"</span>), </span>
<span id="cb17-3"><a href="#cb17-3"></a>             <span class="at">sep =</span> <span class="st">"_"</span>, <span class="at">convert =</span> <span class="cn">TRUE</span>)</span>
<span id="cb17-4"><a href