Versions allow you to view and revert to the previously saved versions of your pages.
How to revert to an older version of a page
Reverting to an older version of your page is super easy. First, click the 3-dot icon in the upper-right corner of the editor and select "Page Versions."
In the Page Versions panel, you will see previous saves of the page. Each version includes a screenshot, the timestamp of the save, and the name of the person who created the version. To roll back to a previous version, select one of your available versions then click the "Restore version" button.
Sometimes, you need to revert back to a newer version of the page. This is also possible. Using the same process as above, you can revert to a newer version of your page by selecting a more recent version!
Note: You may need to refresh the editor after reverting versions to see the content update within that view.