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The most common type of simple file is a text file, which has the extension .txt. They include instructions on how to install a program, beta notes, and other information. Some configuration files are also text files. To edit and work with this type of file, you can use Notepad, a simple text editor provided with Windows XP.
Click Start, All Programs, Accessories, and then choose Notepad.
To open a file in Notepad, click File, and then choose Open.
An Open dialog box appears. Navigate to the folder containing the file you want to open.