Rolling Back to an Earlier Version of a File—Team Foundation Server
One of the benefits of Analyzer's integrated source control is that you can view the history and differences for a particular file. You can view code and content differences between two source control versions of the same file. This is useful if you need to roll back to an earlier version of a file.

example
Let's say that you have been working on a particular file for a few days. Each day you check out the latest version of that file from source control, make your changes, and check the file back in to source control at the end of the day. At a certain point, you determine that you need to "roll back" to an earlier version of the file, using it to replace the latest version. Therefore, you use this feature to view the highlighted differences between the current version and an older version of the file. Once you have identified the older version that you want to use, you can perform a "get" of that version.
For more information see the Flare online Help.