Learned why objects are useful (pages 172 181)
Created a custom class of objects (pages 182 186)
Worked with the prototype object of a class in order to extend instances of that class (pages 187 192)
Created a subclass of objects (pages 192 198)
Learned about object inheritance (pages 197 198)
Created new object methods for custom objects as well as Flash's built-in objects (pages 198 203)
Learned how to watch the properties of an object in order to easily make changes in a scene when an object's property value changes (pages 203 210)
Enhanced the existing methods of Flash's built-in objects (page 211)
Registered movie clips to a class to make them inherit specific functionality (pages 220 234)