The document discusses the effectiveness of combining a main product (a film trailer) with ancillary tasks like a film poster and magazine cover. For the poster and trailer, the same fonts and color red were used to link them while conveying danger. The poster image comes from the trailer to hint at the ghost story plot. The magazine cover features one actress in character to focus the image and represent the trailer, and uses similar genre films and people to emphasize the thriller theme. Both ancillary tasks effectively promote the trailer while maintaining separate styles.