ght="20" alt="==>" />
  <a href="../images/navy.png"><img src="../images/navy.png" width="64" height="64" alt="navy" /></a>
</ul>

<p>Or the expression can be complex:</p>

<pre class="p-3 mb-2 text-body-secondary bg-body-tertiary cli"><samp>magick rose: \
  -fx "(1.0/(1.0+exp(10.0*(0.5-u)))-0.006693)*1.0092503" \
  rose-sigmoidal.png
</samp></pre>

<p>This expression results in a high contrast version of the source image:</p>

<ul>
  <a href="../images/rose.jpg"><img src="../images/rose.jpg" width="70" hei