software version control visualization, shows history as an animated tree with the root directory of the project at its centre. Directories appear as branches with files as leaves. Developers can be seen working on the tree at the times they contributed to the project.
to introduce the CVS basics to CVS novices (in 2 minutes) and refresh and improve the knowledge of people who already know CVS. It's a CVS tutorial, a quick start guide but it's told like a story with lots of examples.