I've had Office 2013 for a while, just not taken it for a drive much, the most common Office versions I encounter in corporate and educational training is 2010. I also use Office 2007 in a small business with a mixed Office environment. So I finally get to install Windows 8.1 and Office 2013, fresh.
Now, typing in Word 2013, I realise that the bar of mini icons on the bottom right of the Word window is missing the Draft Mode icon and the Outline Mode icon. They're still there in the View Tab of the Ribbon, but missing from the easy access mini icons.
Why make a fuss? Outline Mode is crucial to brain storming and re-organising the document by structure, not by pages. You can now do some of that organisation using the Document Map Pane on the far left but Outline View has lots of usability like the Style Pane.
Draft Mode frees your mind from concentrating on page formatting and margins, giving a clean screen. You don't obsess about word wrap line endings and nitty gritty formatting detail. Alternatively, for structural formatting, you can see the Style Pane, Hard and Soft Page Breaks without nausea caused by vertical jiggling.
So, you'll have to use the View Tab or add them to your Quick Access Bar