lue of 'NULL' means that no shading lines are drawn. A zero value of <code>bands.density</code> means no shading nor filling whereas negative values (and 'NA') suppress shading (and so allow color filling).</p></dd>

  <dt>bands.angle</dt>
<dd><p>See <code><a href="https://rdrr.io/r/graphics/polygon.html" class="external-link">polygon</a></code>. The slope of shading lines for the polygon with the uncertainty bounds, given as an angle in degrees (counter-clockwise).</p></dd>

  <dt>new</dt>
<dd><p>logical, 