You can undo and redo any steps in the Recomposit/Light Developer program. The history list table has another important usage which is 'Apply to other photos'. In this function, the same steps can be applied on other photos or saved in a 'Scheme' file for 'Batch processing' or 'Instant filter'.
See 'Global adjusting then apply to other photos' in the Chapter 'Workflow' for more information.