This document discusses various codes and conventions used in documentaries. It identifies common techniques like interviews, background footage, statistics, sound editing, and shot framing. It then examines different modes of documentaries such as expository, reflective, participatory, observational, and performative. Specific documentary styles like direct cinema, institutional, docusoaps, and public affairs are also reviewed. The document provides details on conducting interviews, using vox pops, incorporating background footage and statistics, the role of sound and editing, and how shot framing and camera angles are employed.