The document compares the conventions used in different magazine genres to identify the genre. It analyzes the covers of a music magazine (Rolling Stone), women's magazine (Glamour), and gaming magazine (PC Gamer). Each magazine establishes its genre through elements like the title, cover image, article topics, and color scheme. For example, Rolling Stone references music through its title and focus on a rapper, while Glamour uses pink colors and a smiling female model to signal its focus on women. Overall, the magazines effectively convey their distinct genres through cover design conventions.