The document summarizes how the author represented different social groups in their rock music magazine targeted at 14-19 year olds who enjoy rock music. Specifically, the author focused on representing the "Indie Rock" social group through imagery and content on the cover and inside pages that embody styles and interests associated with that group, such as fashion choices and enjoyment of concerts. The author also included representation of other related groups like "Rockers" to broaden the audience.