How does version control works in a dossier?

the article provides an introduction to the versions control in Dossiers

Dossiers automatically manage versions ensuring that all changes you do on a dossier can be tracked. Version control works in conjunction with the dossier statuses so that only one version has status Released at a given time. 

Let's see a scenario: there is a released dossier that contains Japan regulatory analysis. Today, one of the pinned regulations has changed. You can edit the dossier which automatically creates a new version with the status Released until you decide to release it. Moreover, at any point in time, you can browse through versions and restore old versions if needed. 

Note: In the dossier version history, the latest released dossier version is marked with the label Current version.