In some versions of the [[Mac OS]], including [[Mac OS X]], users can select Finder (by opening it, or clinking on the desktop), and in the Finder menu in the upper left of the screen, select "Preferences..." Select the "Advanced" tab and check the "Show all file extensions" option.<ref>http://fileinfo.com/help/mac_show_extensions</ref> | In some versions of the [[Mac OS]], including [[Mac OS X]], users can select Finder (by opening it, or clinking on the desktop), and in the Finder menu in the upper left of the screen, select "Preferences..." Select the "Advanced" tab and check the "Show all file extensions" option.<ref>http://fileinfo.com/help/mac_show_extensions</ref> |