Use Compare Versions when you want to see a comparison between two versions of the same document.
Compare Versions
From the Document Details page, scroll to the Document Versions grid, select two versions to compare using the selection boxes 
and click at the top of the grid.
A new window will open with the two versions displayed and the comparison displayed in the second document. You may save a new version with all of the differences tracked by clicking on the "Save as New Version" text.
(Optional) Use the Version Notes field to enter notes regarding each version of the document, as seen below.
