You could already view your order history , with this new feature you can actually re- order, with any changes you wish to make. This is how it works :
Your order will now be placed in your cart, enabling you to make changes . When you are done, you can finish your order just like you normally would.
- Want to check out a previous order? Click the green Order number in your order-history. On the bottom of your order-overview you can click re-order