title: Magento Add Instructions to Purchase Order Method on Onepage Checkout
body: <p>Magento 1.9.1 allows for payment instructions for Bank Transfer and Cash on Delivery, however, there isn't an instructions option for Purchase Order.  I'd like to have the same box type below the Purchase Order Number field when the user selects Purchase Order on the checkout.  How can I add Instructions in the following places:</p>
  
  <ul>
  <li>Admin Configuration (Purchase Order)</li>
  <li>One Page Checkout Payment Type: Purchase Order</li>
  <li>Order Review - Payment Method</li>
  <li>Receipt / Invoice Page</li>
  </ul>
  
  <p><strong>Purchase Order (No Instructions)</strong>
  <a href="https://i.stack.imgur.com/rVtEz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rVtEz.png" alt="Purchase Order 1"></a></p>
  
  <p><strong>Bank Transfer (Instructions)</strong>
  <a href="https://i.stack.imgur.com/rgQk1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rgQk1.png" alt="Bank Transfer 1"></a></p>
  
  <p><strong>Bank Transfer (Payment Method Instructions)</strong>
  <a href="https://i.stack.imgur.com/AwsH2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AwsH2.png" alt="Bank Transfer 2"></a></p>
  
  <p><strong>Admin Configuration</strong>
  <a href="https://i.stack.imgur.com/9kaju.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9kaju.png" alt="Configuration"></a></p>