Well i am doing the fiftieth gate but i guess the priciples are the same
Medium of production we were told to be the media of the text so for the fiftieth gate it is a written non-fiction text which i guess you can apply to frontline
and Textual form was told to us as being what makes up the texts e.g. multiple perspectives, chapters or episodes, whether it is autobiographical, biographical or fiction and stuff like that so what goes into the text i hope this helps it sort of makes sense to me but i don't know your text so anyway. hope it help