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Sail components
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===Tell-tales=== {{See also|Tell-tale (sailing)}} Tell-tales are pieces of yarn, thread or tape that are affixed to sails to help visualize airflow over their surfaces. Typically, they are mounted near the luff of sails, but they are also found on the leach on some sails. To windward, a sagging tell-tale indicates still air, either from stalling (indicated on the leeward side, when the sail is sheeted in too far, compared to the apparent wind) or pinching (indicated on the windward side, when the sail isn't sheeted in far enough, compared to the apparent wind).<ref name = Textor/>
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