Within Teamwork.com, you can save changes to a notebook as a new version rather than writing over the existing content.
When you are editing the contents of a notebook, the option to Publish as New Version will be enabled by default. Alternatively, you can select the This is just a little change checkbox to save the changes to the existing version without creating a new one.
When you have multiple versions of a notebook, you will see the version noted on the notebook icon.
You will also see the version mentioned under the name on the notebook details view.
To view another version of the notebook, select the notebook from the list to open the notebook details view. Click the Versions button in the top right and select the version you wish to view.
In the versions dropdown, you can use the checkboxes to select two versions and click Compare.
A single view of the of the notebook will be loaded with the changes between the versions highlighted.
When you select one or multiple versions of the notebook, you will also have an option to delete the versions. The version currently being viewed (denoted in green) cannot be deleted.
Note: The comments on notebooks are not shown specifically with the version that they were added to.
For more information, see: Editing a Notebook