 append of prepend HTML content to the widget (shiny, htmltools tags, or a list of those). For instance, we could use <code>htmlwidgets::prependContent</code> to allow displaying a title to the visualisation as shown below.</p>
<div class="sourceCode" id="cb175"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb175-1"><a href="advanced-topics.html#cb175-1"></a><span class="co">#&#39; @export</span></span>
<span id="cb175-2"><a href="advanced-topics.html#cb175-2"></a>gio_title &lt;-<span class