Full Screen view is listed separately from the other views; it’s near the bottom of the View menu. (You must use the View menu to switch to this view; it’s not available in the button list in the bottom left corner of the screen.)

When you enable full screen, only your document will show on the screen. Certain items (such as page breaks or pictures) may or may not show depending on what view you were using before you clicked Full Screen. Here’s a sample:

You can close full screen by clicking the button in the full screen toolbar (circled in the sample above).

Note that if you have multiple documents open, full screen will only show the first of them; you can’t toggle between documents.