| Cautions, tips, and notes appear throughout this book. Caution  | A caution tells you to beware of a potentially dangerous act or situation. In some cases, ignoring a caution could cause you significant problemsso pay particular attention to them! | Note  | A note is designed to provide information that is generally useful but not necessarily essential for what you're doing at the moment. Some are like extended tipsinteresting, but not essential. | Tip  | A tip is a piece of advicea little trick, actuallythat helps you use software or your computer more effectively. Tips can also help you maneuver around problems or limitations. |  |