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Line 40: The Lisp Machine File System supports versioning. This was provided by implementations from MIT, LMI, Symbolics and Texas Instruments. Such an operating system was [[Symbolics Genera]]. ===~~Mac OS X~~macOS=== Starting with [[Mac OS X Lion\|Lion]] (10.7), [[~~OS X~~macOS]] has a feature called [[Os_x_lion#New_or_changed_features\|Versions]] which allows [[Time Machine (Apple software)\|Time Machine]]-like saving and browsing of past versions of documents for applications written to use Versions. This functionality, however, takes place at the application layer, not the filesystem layer;<ref>{{cite web\|title=Mac OS X Lion file versions, part 2\|url=http://tekonomist.wordpress.com/2011/08/06/mac-os-x-lion-file-versions-part-2/\|accessdate=28 April 2012}}</ref> Lion ~~does~~and later releases do not incorporate a true versioning file system. ===SCO OpenServer===

Versioning file system: Difference between revisions