The legendary RAR program, sometimes known as Roshal’s Archiver after its original developer, has long enjoyed widespread use in the file-sharing and software distribution communities, thanks in large part to its inherent error-recovery and file-reconstruction capabilities. You were out of luck if one floppy vanished or wouldn’t read back properly, or if one section of a 12-part archive upload accidentally got erased from the server.
The days when large file transfers were sent either as compressed archives split across multiple floppy disks or uploaded to size-conscious online forums as a series of modestly sized chunks that were first compressed to save space and then expanded into an ASCII-only text-encoded form will be remembered by early internet users with little affection.