2.Purpose The purpose of writing is the reason why you are writing. If the audience knows less than the writer,the writer's purpose is often instructional (as in a textbook). If the audience knows more than the writer,the writer's purpose is usually to display familiarity, expertise,and intelligence (as your homework). Sometimes,the purpose can be just for fun/entertainment,like in some movies. Consider the following example:2. Purpose The purpose of writing is the reason why you are writing. If the audience knows less than the writer, the writer ’s purpose is often instructional (as in a textbook). If the audience knows more than the writer, the writer ’s purpose is usually to display familiarity, expertise, and intelligence (as your homework). Sometimes, the purpose can be just for fun/entertainment, like in some movies. Consider the following example: