An outline is embedded in every document you create, but unless you deliberately look for it, you might never realize it because Word treats an outline as just another way to view a document. This means that you don't have to actively create an outline to get one. It also means that when you do want a polished outline, you can simply refine the one that's already built into your document.
Outlines can be created in two ways. The first is to work from scratch. Open a new blank document and click the Outline View button on the lower-left corner of your screen to display it in Outline view (see Figure 18.1). You can also switch to this view by selecting Outline from Word's View menu.