The document discusses various codes and conventions commonly used in documentary films. It explains that codes provide deeper meaning and help tell the story, while conventions are widely recognized techniques within the genre. Some key conventions it outlines include interviews, a presenter (on or off screen), voiceovers, reconstruction, location filming, credits identifying experts, and background music. Handheld cameras are used for a sense of realism, while static cameras are better for formal interviews. The document also analyzes examples like Our World and Queer Britain to show how different conventions are employed.