title: What is the purpose of jstl's c:url tag?
body: <p><a href="https://www.tutorialspoint.com/jsp/jstl_core_url_tag.htm" rel="noreferrer">TutorialPoint</a> has a simple example of the <code>c:url</code> tag that looks like this:</p>
  
  <pre><code>&lt;%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;&lt;c:url&gt; Tag Example&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;a href="&lt;c:url value="/jsp/index.htm"/&gt;"&gt;TEST&lt;/a&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>When looking at the corresponding rendering with Chrome's developer tooling it renders like this:</p>
  
  <pre><code>&lt;a href="/jsp/index.htm"&gt;TEST&lt;/a&gt;
  </code></pre>
  
  <p>So the <code>c:url</code> tag seems redundant, but I'm sure I'm missing something?</p>