We are ready and able to work with you on your electrical distribution needs, from transformer vault construction and high voltage power substation construction. The Robert Henry Corporation is the right choice for your high voltage electrical contractor.
Using Microsoft Visio. 1  1. Launch Microsoft Visio and click on âFile.â. 2  2. Click on âOpen.â. 3  3. Select âAutoCAD Drawing (*.dwg; *.dxf)â from the âFiles of typeâ list.  4. Navigate to the DWG file you want opened, then click âOpen.â Visio will open and display the DWG file.
Can't open a .upd file? When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message: Details of the .upd file extension.