I remember in older versions of Flash always wanting some tool that didn't exist or a panel to take care of something that hadn't been made yet. Now I can do more than just want them, I can make them.
When Macromedia gave the capability to extend the Flash authoring environment to all users, it gave us the power to make Flash our own. You can create your own panel sets to do certain things. You can create your own custom tools to draw more shapes than just circles and squares. You can create custom commands to do repetitive tasks and then link them to shortcuts. You can even create your own behaviors, which are small, reusable pieces of code, and effects, which are reusable visual controls for objects.
The first extendable item covered in this chapter is the command.