title: Magento Event On Any Page Load
body: <p>I am wondering if there is an event that is fired once every time a page is loaded before rendering to html in magento?</p>
  
  <p>This might be useful if you want to do some business logic for semi-static attributes that don't rely on user sessions.</p>
  
  <p>For example I will be using this to deliver the canonical tag to the header of magento.</p>