Time Sharing Option


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Related to Time Sharing Option: TSO/ISPF

Time Sharing Option

(operating system)
(TSO) System software from IBM that provides time-sharing on an IBM mainframe running in an MVS environment.
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TSO

(Time Sharing Option) Software that provides interactive communications for IBM's MVS operating system. It allows a user or programmer to launch an application from a terminal and interactively work with it. The TSO counterpart in VM is called CMS. Contrast with JES, which provides batch communications for MVS.
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