How to get DWF printouts

Daily Autocad: "I am going to discuss paper and electronic plot in today’s article. Actually you might have already been sent your drawings in digital format (by zipping AutoCAD files). Yet this is not a effective method if you do not accept your drawings being copied or edited by someone else. Moreover, the person you sent the drawing does not supposed to have AutoCAD. You may use ‘Dwf’ (Drawing Web Format) files instead. They have designed for web publishing purposes at first and can be viewed by adding an ActiveX plug-in into MS Explorer, but later, user requests have AutoDESK published a distinct viewer to open ‘DWF’ files. You can download DWF Viewer for free by clicking here."