In a sense this is the end of an era. Microsoft and the...

In a sense this is the end of an era. Microsoft and the original PC rose to prominence based on the MS-DOS product. And even as Windows came along, Windows 3.1, Windows 95, Windows 98, underneath MS-DOS was running there. Windows simply sat on top of MS-DOS. Well, so today it really is actually the end of the MS-DOS era. It's also, we would say, the end of the Windows 95 era.