Our deepest thanks to the professionals at John Wiley & Sons for all the hours of work put into bringing this book to life. Thanks also to Doug Holland and Guy Hart-Davis for suggesting numerous improvements to the examples and text in this book. A special thank-you goes out to our families for putting up with all the time spent locked away on this project. Finally, we'd like to thank John Walkenbach for his many years of work on the previous editions of this book. His efforts in curating Excel knowledge have been instrumental, not only in helping millions of Excel users to achieve their learning goals but also in inspiring countless Excel MVPs to share their expertise with the Excel community.

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