A long exposition differs from a typical stage direction because a stage direction is usually brief. An exposition, however, goes into more detail. A stage direction also just usually tells the setting or where or what the character is doing, or how the stage looks. An exposition shows history and goes full out on the setting.
Explanation:
an agent is the one that figures out the place that they would be selling the book.Also this is a person that link the buyer and the seller
