Appropriate for readers of all ages. May contain cartoon violence and/or some comic mischief.Appropriate for readers age 10 and older. May contain mild violence, language and/or suggestive themes. Appropriate for readers age 13 and older. May contain moderate violence, mild profanity, graphic imagery and/or suggestive themes. Appropriate for readers age 18 and older. May contain intense violence, extensive profanity, nudity, sexual themes and other content suitable only for older readers.