History panel

Use the History panel to jump to any state of the project created during the current working session. Each time you apply a change to some part of the project, the new state of that project is added to the panel. You can modify the project from the state you select. History states aren’t available for actions within the Capture panel.

The following guidelines can help you with the History panel:

Program‑wide changes, such as changes to panels, windows, and preferences, are not changes to the project itself and so are not added to the History panel.
After you close and reopen the project, the previous states are no longer available in the History panel.
The oldest state is at the top of the list, and the most recent one is at the bottom.
Each state is listed with the name of the tool or command used to change the project as well as an icon representing the tool or command. Some actions generate a state for each panel affected by the action, such as the Titler. Actions you perform in such a panel are treated as a single state in the History panel.
Selecting a state dims those below it, to indicate which changes will be removed if you work from the project at that state.
Selecting a state and then changing the project removes all subsequent states.