Undo & History

Every change you make in the design environment is recorded as an action. This means nothing is ever truly lost: you can revert any correction, put it back, or step back through your work. The history is the main way to fix a mistake or experiment safely.

The History tab

Select an object in the viewport, then open the History tab in the Action panel on the left. It lists all the actions applied to that object, newest first. Each entry is one action you added, so the list reads as a running record of how the object was built.

Three ways to revert

To...	Do this	Effect
Temporarily turn an action off	Uncheck it in the History	The model recalculates without it; the action stays in the list so you can re-enable it
Remove an action for good	Delete it from the History	The action is gone permanently
Undo or redo the last change	Press Ctrl + Z to undo, Ctrl + Y to redo	Steps back or forward through your most recent actions