For each error, it also shows a selection of words it thinks you meant to type in the “Suggestions” list. OneNote then displays the errors in the Spelling pane. You then step through your note, from your insertion mark downward, identifying misspelled words. Then click the “Spelling” button in the “Spelling” group. To check spelling in OneNote using the “Spelling” pane, click the “Review” tab in the Ribbon. The second function of the Spelling feature lets you open the “Spelling” pane.
This indicates words Microsoft OneNote has marked as misspellings. As you type, you may notice that a red wavy line appears under some words in your note. It then compares the words within the note to an internal dictionary. The “Spelling” feature works by identifying words in your notes that it thinks are misspelled. You can check spelling in OneNote to quickly identify and correct misspelled words in your notes.
