As time passes, the application of OneNote alterations and additional useful Feature. Not only the shape of its layout, but there are other navigation enhancements to simplify and accelerate you to type the document or memo. Whenever you do the typing, with an automatic display of the "Proofing" would appear to give the suggestion of vocabulary that you type.
For the navigation bar below it looks different than before, it appears smaller. So your space to perform activities in typing.