title: Magento: Cant find template
body: <p>I see a call</p>
  
  <pre><code>&lt;?php echo $this-&gt;getChildHtml('coupon') ?&gt;
  </code></pre>
  
  <p>in cart.phtml. I cannot find this file anywhere. I am new to Magento, Could you tell me a location where this file should ideally reside? Also, do these templates also load from Database and should I check there/</p>
  
  <p>Kind regards
  Khuram</p>