A blue wavy line under a sentence typically indicates a grammatical or spelling error. It is a visual cue from a writing tool or software to suggest that there may be an issue with the sentence that needs to be reviewed and corrected.
blue line
It might indicate a water route. Can you be more specific?
A wavy blue line on a map usually indicates water. I could indicate a river, canal, or any type of waterway.
When you automatically check spelling and grammar, Microsoft Word uses wavy red underlines to indicate possible spelling errors and wavy green underlines to indicate possible grammatical errors.Blue wavy underlinesWord uses wavy blue underlines to indicate possible instances of inconsistent formatting.
Pronoun Use
Stimorol
A 'clause' is a group of words that includes a subject and a verb but is not a complete sentence (not a complete thought). 'Underlined clauses' is two or more of these within a group of sentences or a page of text with a line under them to indicate or call attention to them.
They stand for an approaching storm front. If I remember correctly, a red line means a warm front and a blue line means a cold front. The triangles show which direction the front is moving. Hope that helps.
w with a line over means 'which'. c with a line over means 'with'.
line under an object
of
the blue line the blue line