Beyond chart creation, the Google Visualization API provides methods for user interaction. Data presented in a chart may be configured to allow a user to manipulate views, ranges, and even styles of the chart itself. Visualizations may also be presented in various sequences, with transition animation to illustrate the change in data values. In this chapter, visualization customization is focused on pre-defined controls used as enhancements to fairly basic charts. Similarly, animation and editor capabilities are somewhat static with controls being added to enhance user experience. In the next chapter, advanced visualization customization and complex methods of chart creation are introduced. Topics are expanded to charts able to interactively display additional data dimensions. Additionally, the first steps to developing a custom visualization from scratch are introduced.