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Software applications allow you to view and play with images, listen to sound files, create and design text documents and more. Different program types are used for different reasons. For example, to write a report, you would use a word processing application; to manipulate numbers, you would open a spreadsheet application. Although applications produced by different manufacturers provide their own sets of tools and features, each category of software has several things in common. This chapter covers several of those features that many software programs share.