Documentaries employ several conventions to guide audience perspective and present a subjective view of events as objective facts. Voiceovers provide authoritative commentary to steer thinking, while real footage and post-production editing construct a fabricated representation rather than a purely factual one. Documentaries also use archive media and interviews with experts to strengthen arguments and convince audiences of films' intended representations and functions. On-screen text serves to quickly convey information through socially accepted norms without question.