expository

adj

1. Serving to explain, explicate, or elucidate; expositive; of or relating to exposition.

   “Practicing expository writing will teach you to explain complex concepts clearly.”

   “The zombie scenes are reminiscent of what you might see on a show like The Walking Dead, short bursts of extreme violence and gore punctuating expository dialogue scenes where the survivors try to figure out how they’re going to get from point A to point B.”

   “The expository, nonmetaphorical lyrics to “Cop Killer” were dedicated to the Los Angeles Police Department: The narrator puts on black gloves and a ski mask, turns off the headlights of his car, and prepares to shoot himself some cops.”