For questions that were created in ExamDeveloper version 7.1807 and higher, the revision number starts at 1 and then increments by 1 (e.g., 1, 2, 3, ...). In older versions of ExamDeveloper a system generated number was assigned to each revision. There was no sequence to the revision numbers.
For questions that were created in ExamDeveloper prior to version 7.1807, the old revision numbers will not change. For any revisions made to the question after version 7.1807, the revision number will increase by 1 starting with the most recent revision number (e.g., 214299, 214300, 214301, ...).
From the History tab, you can select two or more revisions and compare them.