title: Magento - product options view or controller file
body: <p>In the file <code>$MAGENTO_PATHapp/design/frontend/base/default/template/catalog/product/view/options/wrapper.phtml</code>, I see the following line of code:</p>
  
  <pre><code>&lt;?php echo $this-&gt;getChildHtml('', true, true);?&gt;
  </code></pre>
  
  <p>This is responsible for printing the product options on the product page. I want to understand and modify the html content that this line of code produces, but I can't seem to locate the view or controller relevant to it.  For example, let's say I want to programmatically add the characters &amp;nbsp; to the innerHTML of each option element in a drop down, which phtml, php or html file do I edit?</p>
  
  <p>I'm hoping an answer to this question will help me understand how to retrieve product options, which in turn will help me solve this more immediate problem:</p>
  
  <p><a href="https://stackoverflow.com/questions/5033427/magento-query-for-product-options">Magento - Query for Product Options</a></p>