In 1971 the Time Sharing Option ( TSO ) for use with MVT was added.
2.
In 1971 the Time Sharing Option ( TSO ) for use with MVT was added as part of release 20.1.
3.
Early versions of IBM's " Time Sharing Option " ( TSO ) swapped users in and out of a single time-sharing partition.
4.
After TSS / 360 was canceled, IBM put its primary efforts into the Time Sharing Option ( TSO ), a time-sharing monitor for OS / 360.
5.
It was replaced by CP-67, MTS ( Michigan Terminal System ), TSO ( Time Sharing Option for OS / 360 ), or one of several other time-sharing systems.
6.
However whereas Unix does not need Emacs to provide text editing services, IBM's operating systems originally needed WYLBUR . Later innovations such as IBM's Time Sharing Option ( TSO ) made WYLBUR less relevant for IBM users and gradually replaced it.
7.
When it was originally introduced in 1971, IBM considered time-sharing an " optional feature ", as compared to standard batch processing, and hence offered TSO as an option for OS / 360 MVT . With the introduction of MVS in 1974, IBM made it a standard component of their top-end mainframe operating system . " TSO / E ( " Time Sharing Option / Extensions " ) " is a set of extensions to the original TSO . TSO / E is a base element of z / OS . Before z / OS, TSO Extensions ( TSO / E ) was an element of OS / 390 and was a licensed program for the MVS and MVS / ESA System Products.
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