Each shot in Lustre has its own undo and redo history.
You can undo most operations in Lustre. You can use Redo immediately after undoing an operation.
You can also undo and redo operations with the Autodesk control surface or with the Tangent CP100 control surface. See the section that addresses the Undo list in The Autodesk Control Surface, or in The Tangent CP100 Control Surface.