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VSE
VSE (Virtual Storage Extended) is an operating system on the IBM System/370 and System/390 mainframe computers. It is less common than MVS, and is mostly used on the smaller machines. It is descended from DOS/VSE, which is in turn descended from DOS.
VSE originally supported 24-bit addressing; as the underlying hardware was extended it was also to progressively support 31-bit addressing.
The main interfaces to MVS are JCS (Job Control Statements), the batch processing interface. There is also a special interface used by operators at the system console. CICS is an interface widely used for online applications.
VSE, like MVS systems, are traditionally accessed by 3270 terminals[?], or by PCs running 3270 emulators.
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