Open an AutoCAD DWG or DXF file for review
You can open an AutoCAD DWG or DXF file for review, and then add your comments. For example, you might want to review and annotate a CAD drawing and then return it to the person who created it.
On the File menu, click Open.
Under Files of type, click AutoCAD Drawing.
Under Look in, select the folder that contains the file you want.
Select the file, and then click Open.