In this chapter we have learned how to configure our grid panels so we can get the best of grid panels when developing our applications. It is important to know what are the grid panel capabilities and how can we add custom functionality using column renderers, grid features, or grid plugins.
You probably don't need to know all possible grid configurations, but if you forget anyone you can always go and take a look to the Ext JS 4 documentation.
In the next chapter we are taking a look at the MVC application pattern. This pattern is the way we should be doing applications in Ext JS 4.