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Save your work frequently. Your work stays in the computer’s temporary memory until you save it to the internal storage drive. If the network you are using goes down and you must restart your computer to reconnect, or your battery runs out of charge while you are working, you will lose all work since you last saved. See “Saving your work” on page 101 for further information. HINT: Some programs have an automatic save feature that can be activated. This feature saves your file to the internal storage drive at preset intervals. See your software documentation for details. 95 96 96 96 Computing tips . Back up your files to external media on a regular basis. Label the backup copies clearly and store them in a safe place. It is easy to put off backing up because it takes time. However, if your internal storage drive suddenly fails, you will lose all the data on it unless you have a separate backup copy. For more information, see “Data and system configuration backup in the Windows® operating system” on page 207. . Use Error-checking and Disk Defragmenter regularly to check and optimize disk space and improve performance. . Scan all new files for viruses. This precaution is especially important for files you receive via diskette, email, or download from the Internet. . Take frequent breaks to avoid repetitive-motion injuries and eyestrain. . Do not turn off the computer if a drive indicator light indicates a drive is active. Turning off the computer while it is reading from or writing to a disk may damage the disk, the drive, or both. . Before turning off the computer, use the Shut Down command or Sleep command. See “Using and configuring Sleep mode” on page 89 to learn more about Sleep. NOTE The Windows® operating system records information, such as your desktop setup, during its shutdown procedure. If you do not let the Windows® operating system shut down normally, details such as new icon positions may be lost. Learning the Basics 97 Using the keyboard Using the keyboard Your computer’s keyboard contains character keys, control keys, function keys, and special Windows® keys. (Sample Illustration) Keyboard Character keys Typing with the character keys is very much like typing on a typewriter, except that: . The space bar creates a space character instead of just passing over an area of the page. . The lowercase letter l (el) and the number 1 are not interchangeable. . The uppercase letter O and the number 0 are not interchangeable. Ctrl, Fn, and Alt keys (Sample Illustration) Ctrl, Fn, and Alt keys The Ctrl, Fn, and Alt keys do different things depending on the program you are using. For more information, see your program documentation. 98 98 98 Starting a program Function keys The function keys (not to be confused with the Fn key) are the 12 keys at the top of the keyboard. (Sample Illustration) Function keys F1 through F12 are called function keys because they execute programmed functions when pressed. Used in combination with the Fn key,...

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