The "Versions" tab (located under History on the right side of the page) allows you to track changes made on contracts by comparing two versions of the same contract. To track changes:
1.) Click the version you want to look at.
2.) Press the star icon on the contract you would like to compare it to.
Highlighted text shows text that has been changed. It will be highlighted with the color associated to the user who made the changes.
Text that is highlighted and has a strikethrough shows text that was removed.
(This feature is available with Standard, Plus, and Enterprise subscription)