The main window displays several categories of charts that can be created by this program and offers samples for each of them. 

You can see not only the actual chart, but also the source code for each type of chart so that you too can create such a thing. 

You can see a sample XML chart that is meant to serve as an example for your future attempts. 

Another great feature of this program is that is enables you to create even genealogy trees without much effort from your part.