A standard plan contains a ready-to-print file in PDF format. Your file contains the drawings for your purchased design, as listed. Use this file to print an unlimited amount of paper sets (also known as blueprints) at your local print shop. The correct printer paper size is included in the title of your file. Many local print shops (e.g. FedEx, UPS) are very familiar with printing blueprints. Additionally, many permitting offices no longer accept paper drawings for permit applications. You can use your PDF file for electronic applications and submittals. The complete plan contains your drawings in both PDF and DWG format, as listed. DWG is a standard file format used in the architecture and engineering industries. Purchasing CAD files will enable you (or a design professional such as an Architect or an Engineer) to make any changes desired. CAD files are commonly used for structural engineering. Please see our product info section to learn more.