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The yellow one does leave a trace of a white line when heat erased.
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It should be noted that erasing does not work well on the semi-glossy paper (found commonly in textbooks)
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The eraser does erase.
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But the eraser does not work on the other side it is more of a rubber ball and will just rub your paper away
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It should be noted that erasing does not work well on the semi-glossy paper (found commonly in textbooks)
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While they erase perfectly, and the highlighter ink works just as any highlighter does, they dry out very quickly--I used up one highlighter on a single, 20-page paper