title: Prefill the billing fields in woocommerce checkout
body: <p>In my project I'm using a direct checkout plugin for woocommerce in order to have cart and checkout on one page.</p>
  
  <p>And the client want's the order process to be like this</p>
  
  <ol>
  <li>We have an order page in wordpress where users enters their name, address, phone, email, selects the price and then redirects to a direct checkout.</li>
  <li>On checkout page we want fields billing_name, billing_address, etc to be already prefilled with a data from order page.</li>
  </ol>
  
  <p>So the question is how could I pass that data to a checkout ?</p>
  
  <p>And the other how could I clear those fields before filling with a passed data ?</p>