<P> A documentary film is a nonfictional motion picture intended to document some aspect of reality, primarily for the purposes of instruction, education, or maintaining a historical record . Such films were originally shot on film stock--the only medium available--but now include video and digital productions that can be either direct - to - video, made into a TV show, or released for screening in cinemas . "Documentary" has been described as a "filmmaking practice, a cinematic tradition, and mode of audience reception" that is continually evolving and is without clear boundaries . </P> <P> Polish writer and filmmaker Bolesław Matuszewski was among those who identified the mode of documentary film . He wrote two of the earliest texts on cinema Une nouvelle source de l'histoire (eng . A New Source of History) and La photographie animée (eng . Animated photography). Both were published in 1898 in French and among the early written works to consider the historical and documentary value of the film . Matuszewski is also among the first filmmakers to propose the creation of a Film Archive to collect and keep safe visual materials . </P> <P> In popular myth, the word documentary was coined by Scottish documentary filmmaker John Grierson in his review of Robert Flaherty's film Moana (1926), published in the New York Sun on 8 February 1926, written by "The Moviegoer" (a pen name for Grierson). </P>

Who is the subject of the documentary film that start made