EXE: Deleting Drawn or Handwriting by Using Scratch

Question: 
Found Scratch-out Gesture in OneNote option window, what and how to use scratch-out gesture?
 

Answer: 
Scratch-out Gesture is using pen to draw back and forth three horizontal lines.
Just as we write a typo on the paper and draw back and forth with a pen.
 
How to Use Scratch Gesture? 
At first, go to OneNote options window -> Advance -> Pen
Uncheck the “Disable the scratch-out gesture while inking.” , to enable scratch-out gesture.
Then use Scratch-out Gesture to erase drawn or handwriting.
 
Demonstration