Time Sharing Option

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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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MVS, is a Time Share Option (TSO) application that, with a few keystrokes, provides the ability of reviewing specific UserID access to four crucial areas; MVS System Information, Key System Libraries, DASD Vulnerability and User and System Databases.
Chairman Wayne Sanders said it was the first time share options had been offered to all staff.