Everything you need to know about Mastering operators, error values, naming techniques, and absolute versus relative references Debugging formulas and using audit tools Importing and exporting XML files and mapping the data into specific cells Using Excel 2003? S rights management features Working magic with array formulas Developing custom formulas to produce the results you need Here? S formula for Excel excellence The formula is the lifeblood of spreadsheets, and no one can take a spreadsheet to life like John Walkenbach. He examined the financial formulas, explores the many options made possible with array formulas, teaches you to develop custom worksheet functions with VBA, and more.