What does the magnifying glass mean in Clue?

What does the magnifying glass mean in Clue? CookApps. The Clue item (magnifying glass) helps you find one of the longest lines you can currently make on the board. It is a powerful tool you can use, but it costs Jewels! This item carries over in between levels, so use Clues for the levels that you want extra help in!

CookApps. The Clue item (magnifying glass) helps you find one of the longest lines you can currently make on the board. It is a powerful tool you can use, but it costs Jewels! This item carries over in between levels, so use Clues for the levels that you want extra help in!