/span> <span class="op">&lt;-</span> <span class="cn">TRUE</span>

<span class="co"># switch to the default text filter</span>
<span class="fu"><a href="../reference/text_filter.html">text_filter</a></span><span class="op">(</span><span class="va">text</span><span class="op">)</span> <span class="op">&lt;-</span> <span class="cn">NULL</span></code></pre></div>
</div>
<div id="valid-utf-8" class="section level2">
<h2 class="hasAnchor">
<a href="#valid-utf-8" class="anchor"></a>Valid UTF-8</h2>
<p>All <code>c