OneNote Gem Add-Ins

Question:

How to remove the red wavy underlines under some text in OneNote? I don't want to see the red, wavy underlines on-screen.
 

Answer:

A red wavy line appears under the text to indicate that a word or sentence is misspelled.
For example:

1. The word or phrase you type has a typo when typing.
2. There is an error in sentence grammar.

 

Solution:

Because OneNote for Windows 10 doesn't yet offer other methods in OneNote 2016.
Now the stopgap can only be to turn off the spelling check in the OneNote UWP.
 
In OneNote UWP, click … (More Settings) in the right top corner -> Settings -> Options -> Proofing -> Enable “Hide spelling errors”.