title: Making only the link destination editable in MailChimp
body: <p>Is there a way to only allow a user to edit a link's destination, and not the link itself, using MailChimp's template language? There doesn't seem to be anything about this specific situation in their <a href="http://kb.mailchimp.com/article/template-language-creating-editable-content-areas" rel="noreferrer">documentation</a>.</p>
  
  <p>For example:</p>
  
  <pre><code>&lt;a href="link.html" target="_blank"&gt;
      &lt;img src="button.gif" alt="Button Name" /&gt;
  &lt;/a&gt;
  </code></pre>
  
  <p>So I want to allow the user to ONLY edit "<code>link.html</code>" to point somewhere else, as the link button never changes.</p>
  
  <p>Unfortunately, to make matters more complicated, there's an unknown number of links in the template (thanks to the use of <code>mc:repeatable</code>), so the solution cannot be hard-coded to a specific link.</p>
  
  <p>Is this possible?</p>