 Hey, I'm Andrew Connell. This video is an overview of one of the chapters in my course, Mastering the SharePoint Framework that's available for purchase on my site, boytanos.io. This overview video is going to give you an idea of everything that the chapter covers. You can learn more by checking out the description and the notes below the video. If you've got any questions about this chapter or about the course in general, just make sure you drop a comment below the video and I'll be sure to get back to you. So with that, let me get out of the way. Enjoy the overview to this chapter. Hi, I'm Andrew, and in this chapter of my course on Mastering the SharePoint Framework, we will take a look at Property Pains. The Property Pains is the control on the side margin of a SharePoint page that appears when you are editing a web part. It allows your users to modify the settings of the web part once it's been added to the page. In a previous chapter, you saw how to create and modify client-side web parts. That chapter demonstrated how to persist web part settings to a custom property that was saved and managed by the SharePoint Framework on your behalf. When would you want to use a custom property pane? Well, consider a weather web part that displays your local weather. You need a way to input the location into the web part so that it knows where to fetch the information from. Or consider the NASA Apollo Mission Viewer web part in the course scenario. You need a way to enter or select a specific mission ID to display in the web part. These are some prime use cases for custom property panes. In this chapter, you will see how to create custom property panes to give a user experience to this use case. Furthermore, you will see how to handle changes, how to manage the behavior of property panes, and even add input validation to your controls. And at the end of this chapter, you will find a big lesson demonstrating each of the controls Microsoft has made available in the property pane, including code associated with each one. I call this my property pane showcase. Other chapters in this course will take property panes to the next level, such as building custom controls, dynamically loading drop-downs and choice group controls, looking at even more options available to working with property panes. You ready? Good. Let's get started.