The document discusses several conventions and techniques used in film openings to engage audiences. Main conventions include signaling the genre, themes, and characters to keep audiences interested. Introducing main characters allows audiences to form relationships and want to see how they develop. Title sequences introduce actors and creatives to attract different audiences. Sound is used to set the mood and atmosphere. Narrative codes like action and enigma are employed to create suspense, tension, and mystery through unanswered questions to anticipate answers and keep audiences guessing.