Variables for which you supply values are in italics . Information you enter is in boldface . Italicized type also emphasizes new terms and concepts and is used for the titles of books and periodicals. Note is a special paragraph that means reader take note . It usually refers to helpful suggestions, the writer's assumptions, or references to materials not contained in this manual.
Caution is a special paragraph that means reader be careful .
It means that you are capable of doing something that might result in equipment damage, or worse, that you might have to take something apart and start over again.