Each time anyone makes changes and saves a wiki page, a new version is created. The History tab lets course participants see the different versions of a wiki page, compare versions and revert to an earlier version if needed. The History page contains a table that displays the username, date and time stamp of the saved change.
Comparing Page Versions in a Wiki Activity
From the course homepage, click on the link to the wiki activity you want to work with.
Click the History tab. You will see a table with the versions listed by date and time.
Click a number to see a different version without comparing.
To compare two different versions:
In the Diff column, select two different versions.
Click Compare selected to view them together and compare. You can continue to compare different versions.
Click the History tab to return to the table.
In the upper left, click your shortened course name just to the right of Dashboard to return to your course site home.