In this chapter, we covered two areas of detailed customization—the creation of custom styles, as well as complex subplots. In the previous chapters, you have been exposed to the means by which you can discover more of matplotlib's functionality through its sources. It was in this context that the additional topics in customization were mentioned. With this, we transitioned into the topic of matplotlib configuration via files as well as rcParams. This is a transitional topic that will be picked up again at the beginning of the next chapter, where we will cover matplotlib deployments.