CDD - ConceptDraw PRO Document is a file extension that is mainly for creating diagram files. It is a wonderful program that can be used for business drawings and much more. You can come up with your own flow charts and much more. This extension only comes with the best, and you should really consider using this to your advantage. You will also be able to convert different CDD files for your own purpose. You will also be able to export them in various formats so you can use them at a later time. This extension also comes along with a scripting language that should be very beneficial to you as well as your business. It can also be used for automating repetitive tasks.