Textbook in PDF format

This book, we feel, is a long time in coming. Before we started reverse-engineering file formats, we would go through bookstores looking for just this book. We never.
found it. The reason we began reverse-engineering file formats had less to do with a need for the information as it had to do with a curiosity about them. We're just the kind of people who like to know how everything works.
You're looking at a . MRB file and wondering, Why doesn't Microsoft document this stuff? You're reaching for the phone. STOP! Read Windows Undocumented File Formats instead - we give you all the information you need to tackle the most common Windows file