Tags give the ability to mark specific points in history as being important
Android 6.0.1 Release 80 (MOB31Z)
Android CTS 7.1 Release 7 (4120758)
Android CTS 7.0 Release 11 (4120754)
Android CTS 6.0 Release 20 (4120755)
Android CTS 5.1 Release 21 (4114473)
Android o preview 3
Android Wear O Preview 3 (Android O Beta 2)