The document discusses conventions used in horror trailers, posters, and magazines. For the trailer, conventions like using a possessed object to base the story around and showing scenes out of chronological order were utilized. The poster used a dark background with white text for the title, included institutional credits at the bottom, and featured a black and white main image taking up much space. The magazine masthead was in a large white font across the top, had a tagline to draw readers in, included a website link under the title, and featured a creepy central image, though not covering most of the front cover.