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Part 2: Working with Windows XP > File Naming Conventions

Chapter 33. File Naming Conventions

Windows files have two names—a first name and an extension. The extension is usually three letters added at the end of the file name that tell Windows what kind of file this is. The two names are separated by a “dot” (what in the old days we used to call a period).

If you look at your file names in My Documents you may not see the extensions but they're always there. For example, if you have Microsoft Word on your PC, all of your Word documents will end in .doc. If you have Excel, all of your spreadsheets will end in .xls. You've heard of MP3 files, the music files that people like to download—well, guess what, they all end in .mp3.


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