What does the red wavy line mean in word

wordThe red wavy lines indicate incorrect letters.

Enter windows@163.com in Word. At this time, the system checks and finds that the letters are wrong, so the system defaults to a red wavy underline. The effect is as shown:

How to set or cancel the red wavy line:

1. Click the "File" button in Excel and select "Options" in the drop-down menu

#2. Click the "Spell Check" option in the options interface, and then uncheck the option under Spell Check to cancel the red wavy line.

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