What is the benefit of writing notes with different coloured pens

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Why do many people use a multi-colour pen when taking notes? - Quora

What are blue, red, and black pens each used for respectively? - Quora

How can we use highlighters and colour pens to make good notes and

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Why do many people use a multi-colour pen when taking notes? - Quora

What are blue, red, and black pens each used for respectively? - Quora

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