This document discusses the main purposes of writing. It identifies the three main purposes as: to inform, to persuade, and to entertain. To inform is to provide information or knowledge to readers. To persuade is to convince or attract an audience towards an idea or opinion. To entertain is to amuse readers for writing's own sake, such as through fiction stories. While these three purposes - inform, persuade, entertain - cover many common reasons for writing, the document notes there are countless other reasons and purposes for why we write as well.