[operating system] z/VSE (``Virtual Storage Extended``) is an operating system for IBM mainframe computers, the latest one in the DOS/360 lineage, which originated in 1965. It is less common than prominent z/OS and is mostly used on smaller machines. Primary z/VSE development occurs in IBM`s Böblingen labs in Germany. ==Overview== DOS/360 ... Found on http://en.wikipedia.org/wiki/VSE_(operating_system)