** BACKUP **
This contribution allows you to batch print the orders on the orders.php screen for version 2.3. You can filter based on order status, and can then select/deselect orders for printing. Can batch update order status as well. Instead of using frames or a PDF, this contrib produces 1 invoice per page by using CSS page breaks.
This contribution is based on batch-invoice-printing-v1.1 by PandA.nl and edited by Derek-Paul for compatibility for 2.3.