 <p>Using <code>includeInLayout ="true"</code> or <code>"false"</code> will toggle the space that it takes in the flow of items being rendered in that section. </p> <p><strong>Important note:</strong> If you don't specify <code>visible="false"</code> when using <code>includeInLayout = "false"</code> then you will usually get something that is undesired which is that your item (<code>boxAddComment</code>) is still visible on the page but stuff below <code>id="boxAddComment"</code> will overlap it visually. So, in general, you probably want "<code>includeInLayout</code>" and "<code>visible</code>" to be in synch. </p>