I realized that I do use a plugin in the 4D database that requires licensing for deployment. So to explore the graphic display of K4 activity you will need to contact 4D Inc. to get a 30 day free evaluation license. This will give you full functionality of 4D, except for the ability to compile and distribute a double-clickable application. So you can view the data display and look at all of the code.
You can find out more at http://www.4D.com.