WHAT IS EXPOSITORY COMPOSITION?

Expository Composition, when this is searched up on Google you find many links leading to things like expository writing or expository essays. When they are actually looked into we can learn that expository essays have the purpose of explaining a topic in a logical and straightforward manner. Now based off of that what I think expository composition is is learning how to write like this. Learning how to get straight to the point in essays by being able to comprehend the main points of the topic and using that information in a way that gives the reader the main points of your topic faster but still give plenty of information. That's what I think expository composition is.