Codes and convections of film openings

Film openings often contain specific codes and convections that apply to the genre that it is portraying.
For example, we (the class) looked at various film openings from different genres.

For example, Halloween (1978, John Carpenter) set many standards that can still be seen today in many horror films.
Some of these techniques include the use of first person cameras, long unedited cuts, female heroins and the principle that only the "good" people survive, for example the people in the film (usually the studs/jocks and the blonde, busty females) that had sex were killed whereas the brown haired, female heroin survived.