"</span>,
  <span class='kw'>fill_alpha</span> <span class='kw'>=</span> <span class='fl'>0.5</span>,
  <span class='kw'>line_width</span> <span class='kw'>=</span> <span class='fl'>2</span>,
  <span class='kw'>line_dash</span> <span class='kw'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='fl'>4</span>, <span class='fl'>4</span>),
  <span class='kw'>level</span> <span class='kw'>=</span> <span class='st'>"overlay"</span>
)</pre>

    <h2 class="hasAnchor" id="ar