When editing a unit in a course there might be a time that you need to roll back to an older version of it. eFront keeps track of modifications you make to your content and gives you the option to access older versions and even roll back to them.
When logged in as an administrator or an instructor (or any other user type that has privileges to add/edit content) visit the content you want to edit.
You can do this by the course's dashboard where a list of all course units are displayed and click on the unit you want (1).
When accessing the unit, if there are older revisions of it available (meaning that you have made changes previously) then an option to view all older version of the unit will be available next to the edit button (2).
Clicking on this button will open a dropdown menu with all older revisions of the unit you are currently editing (3). Clicking on an older version of the unit will show you all contents of the previous versions of the unit at the time. You may choose to revert back to that version by clicking on the corresponding option (4).