Why? How could it be more useful? HTTP byte ranges are incredibly flexible, since you one request can specify many byte ranges at once (it's almost too flexible, since a dumb server can easily be overwhelmed by a maliciously complicated request)
It handles the basic case of fetching the remainder of an interrupted download, and can also support partial downloads e.g. for supporting a video stream with the user jumping to different places in the movie.
It handles the basic case of fetching the remainder of an interrupted download, and can also support partial downloads e.g. for supporting a video stream with the user jumping to different places in the movie.