title: When to encode as HTML in Grails
body: <p>I often see Grails sample code where the programmer has called a method called <code>encodeAsHTML()</code>. I figure I should probably use this in my Grails applications (for security reasons, I assume?), but I was wondering <em>when</em> I should use this method. What objects/properties/etc. are candidates for the <code>encodeAsHTML()</code> method?</p>
  
  <p>Thank you!</p>