ORVYL and WYLBUR are the names associated with the Stanford Timesharing System. Initially developed in 1967-68 for the IBM S/360-67 mainframe computer, it was one of the first time-sharing systems to be made available for IBM computers.
The names ORVYL and WYLBUR are often used interchangeably, but:
- ORVYL is a timesharing monitor that supports a file system, command language, program execution and debugging, and provides supervisor services;
- WYLBUR is a text editor, word processor, job submission and retrieval, and e-mail program designed to work in conjunction with ORVYL or with IBM's OS/360, SVS, and MVS operating systems; and
- MILTEN is terminal control software used by both ORVYL and WYLBUR for start/stop terminals.