History (Magic xpa 4.x)
From the Version Control menu, select History and a read-only screen opens displaying the different versions of the object.
You will only be able to view the History screen if it is supported by your Version Control product.
While you are in the History screen, you can view the history of differences by clicking the Diff button. Note that in some Version Control products, such as PVCS, you need to set the Differences Tool Command Line environment setting.
How Do I Track Changes?