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<title>System settings</title>
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<p>Most people never change the system settings that are created during
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installation. If you do customize your system settings for some reason, or if
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<title>Installed software</title>
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<p>The software you use can normally be restored quite quickly after a
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that require a great time investment to replace without a backup. If things are
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easy to replace, on the other hand, you may not want to use up disk space by
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having backups of them.</p>