0.1. What's New in the Fourth Edition
In order to accommodate all the new material without making the book much, much larger, I've gotten rid of reference pages for the trivial properties of objects. These properties are already described once on the reference page for the object, and putting another description in a reference page of its own was redundant and wasteful. Properties that require substantial description, as well as all methods, still have reference pages of their own. Furthermore, the design wizards at O'Reilly have created a new interior design for the book that remains easy and pleasant to read but takes up less space.
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