The history panel lists the various modifications made to the 3D model in the form of a succession of steps through which you can navigate.

Two buttons allow you to activate the previous or next level.
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​Undo: The button cancels the recorded actions backwards to the initial state which corresponds to the opening of the editor.

Redo: The button applies the recorded actions forward to the last action made.

You can also double-click a state to directly undo the recorded actions performed after the state.

Note that if you undo certain actions to reach a specific state and change the model, previously recorded actions after that state will be cleared since a new history branch begins.

History is lost when closing the editor but your saved changes are stored.

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