This tab gives a read-only view of the workflow as the full JSON which you would get when you export/download a workflow. Code from this tab can be copied to quickly clone large portions of workflows, or as examples of leveraging the Intersight API.
Workflow Designer Code Tab within the UI:
History Tab
This tab shows any execution of a running workflow, or past executions. You can see a dropdown of all workflow executions, and then the display of all components from that execution including tasks, workflow inputs, task logs or inputs/outputs, and the overall workflow execution status.
This tab also provides buttons to either rollback or clone any previous workflow execution.