list of strings to inject at the start or end (respectively) of the <code>&lt;body&gt;</code></li>
</ul></li>
</ul>
<p>It also supports some extra variables:</p>
<ul>
<li><code>author-url</code>
<ul>
<li>Optional. Will render <code>author</code> wrapped in a link with this target if present.</li>
</ul></li>
<li><code>return-url</code>
<ul>
<li>Optional. Will render a ‚Äúreturn‚Äù link at the top of the table of contents if present.</li>
</ul></li>
<li><code>return-text</code>
<ul>
<li>Optional. Text