title: In Magento, can I add a static block to the header by xml only?
body: <p>I am trying to customize a theme using only local.xml whenever possible. I want to add a static block to the header without modifying header.phtml. This code works fine for the content area, but not for the header:</p>
  
  <pre><code>&lt;default&gt;
      &lt;reference name="content"&gt;
          &lt;block type="cms/block" name="how-it-works-button"&gt;
              &lt;action method="setBlockId"&gt;&lt;block_id&gt;how-it-works&lt;/block_id&gt;&lt;/action&gt;
          &lt;/block&gt;
      &lt;/reference&gt;
  &lt;/default&gt;
  </code></pre>
  
  <p>Anybody know why? I thought that all I would need is to change “content” to “header”, but nothing shows up when I do.</p>
  
  <p>Thanks for your help! </p>