Exogenous Vs. Indigenous Media Productions
Exogenous is from the outside while Indigenous is from the inside of any media story. If a high school student makes a school record and it is reported in the schools paper then that would be indigenous media production. The lines get a little hard to define at this point because a town radio station could have a story on the same thing and be defined as indigenous or exogenous depending on where the boundaries of the story are drawn. An exogenous media production of this story would be that of a neighboring city or school district reporting on the kids achievements.
This article from the Leader Telegram gives an account for local sport scores as well as the scores of games from outside the area. So in this case the story covers both exogenous and indigenous media productions.