If you have access to Sonnet software from the same computer on which you are running Virtuoso, it is possible to open the Virtuoso SonnetEM View in the project viewer for viewing or editing. Selecting Tools - Project Viewer - View 3D from the main menu in the Cadence Virtuoso Interface main window, the Sonnet session window is opened, and a 3D view tab in View Only mode is displayed. You may examine your circuit, but are not able to make any changes.