The version control system saves a copy of an object every time you check it in.
The version control system saves a version of the object and assigns a version number to it. The highest number designates the latest version.
Use the
Version History
view to view the version history of objects, open historical versions in read-only view, and restore historical versions of objects. You might want to restore a historical version of an object to restore previous functionality.
When you restore a historical version of an object, that version becomes the latest version. The Model repository replaces the current version of the object with the historical version and checks the object out to you. If the object is open in an editor, the Developer tool refreshes the object to the restored version.