   <div id="arguments">
    <h2>Arguments</h2>
    <dl><dt>.tbl</dt>
<dd><p>Object to check.</p></dd>
<dt>x</dt>
<dd><p>Object to print or extract elements.</p></dd>
<dt>...</dt>
<dd><p>Further arguments passed to or from other methods.</p></dd>
<dt>i, j</dt>
<dd><p>Arguments for <code><a href="https://rdrr.io/r/base/Extract.html" class="external-link">[</a></code>.</p></dd>
</dl></div>

    <div id="ref-examples">
    <h2>Examples</h2>
    <div class="sourceCode"><pre class="sourceCode r"><code class = "r"