Looking at Project History

In the History area you can look at the past versions of your project. Each version corresponds to a script that created it, and is labeled with the check-in comment from that script (and a unique script id).

To view the details of a script:

Select any script to view the files affected by that check-in in the Details pane at the bottom
Double-clicking a file in the Details pane will launch the visual differ where you can see the changes made by the selected script
From the Details pane you can choose to save copies of selected files to a specified location

To view changes made since a certain version:

Select the version from which you want to start
Select Show changes since this script... from the Selection menu or Context menu
The list of files that have changed since this version will be listed in the Details pane.
Double-click on any of the files in the list to view the cumulative differences.
From the Details pane you can choose to save copies of selected files to a specified location

Calling history from the Files Tab

Another approach for viewing history is to first select a file (or files) in the Files tab, and then click the Show History button. You'll be shown all the scripts that changed the selected file(s). You'll notice that the dropdown History of: will list the selected file(s). This is called a "history filter"--you can turn it off by selecting the "*.*" entry from the dropdown.