Chapter 18. File Format Differences
In this chapter
A Brief History of File Formats 366
Using the New Binary File Format: BIFF12 368
Using the New XML File Formats: XLSX and XLSM 368
The Future of File Formats 370
Microsoft does not introduce file format changes lightly. File sharing becomes a nightmare when someone using Excel 2007 tries to share files with someone using Excel 2003.
Excel 2007 offers three new file formats. This chapter discusses these three file formats. Chapter 19, “Compatibility Mode,” discusses how you can continue to share files with people using older versions of Excel.
Note
A fourth file format, the .XLAM file type, can be used by developers to distribute add-ins to extend the functionality of Excel. This file type ...
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