title: Drupal, Ubercart: how can I get the order printable version programmatically?
body: <p>I need to generate a pdf from Ubecarts orders. I know how to access to the printable versions of orders from my browser: i.e. "admin/store/orders/45/invoice/print"</p>
  
  <p>However, I was wondering how to access to the page from php, maybe using ubercart apis ?</p>
  
  <p>What I need is the equivalent of node_view, for orders (which is not a node).</p>
  
  <p>thanks</p>