sentences:  During 2007 Amazon sold a four-series box set, but a casualty of the difficulties with Blake's 7 Enterprises was "The Making of Blake's 7", a four-part documentary directed by Kevin Davies, intended originally as an extra feature with each DVD release.B7 Enterprises said they " ... did not feel [the documentary] provided a proper tribute or fresh retrospective of the show".The discs contained extra features including bloopers, out-takes, alternative scenes, voiceover commentaries, interviews and behind the scenes footage.