Which wavy line shows that the word is repeated in MS Word?

Which wavy line shows that the word is repeated in MS Word?

کون سی لہراتی لائن سے پتہ چلتا ہے کہ ایم ایس لفظ میں یہ لفظ دہرایا گیا ہے؟
Explanation

In MS Word ,a blue wavy line indicates a grammar problem.

A purple dotted line indicates a suggested refinement.

A red wavy line indicates a spelling error.


So the user can understand that a particular word is repeated.