This book covers everything you need to know about Mastering operators, error values, naming techniques, and absolute versus relative references, debugging formulas and using the auditing tools, importing and exporting XML files and mapping the data to specific cells, using Excel 2003's rights management feature, working magic with array formulas, and developing custom formulas to produce the results you need. Here's the formula for Excel excellence. Formulas are the lifeblood of spreadsheets, and no one can bring a spreadsheet to life like John Walkenbach.In this detailed reference guide, he delves deeply into understanding, creating, and applying formulas in everything from basic workbooks to charts, pivot tables, and more advanced Excel applications. He examines financial formulas, explores the many options made possible with array formulas, teaches you to develop custom worksheet functions with VBA, and much more. Once again, 'Mr. Spreadsheet' will astound you with the breadth and depth of Excel's capacity. The CD-ROM includes trial version of the author's award-winning Power Utility Pak 5, and more than 90 sample workbooks illustrating key formula concepts.