The document discusses several techniques used in film openings to set the tone and establish expectations for the rest of the film. It describes how editing pace, sound design, mise-en-scene elements like lighting, costumes, sets and props, and location can be manipulated to convey genre and mood. Fast-paced editing may imply a thriller, while limited cuts suggest something more mysterious. Sounds, costumes and lighting are also used to immerse viewers in the intended atmosphere through techniques like diegetic, non-diegetic and high-key vs low-key lighting. Examples from films like Citizen Kane, Star Wars and Misfits are provided.