Page 363 - Bob Holtzman "The Field Guide to Knots How to Identify, Tie, and Untie Over 80 Essential Knots for Outdoor Pursuits"
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6. Holding both loops high near the rope’s standing parts in one hand, tighten the knot by pulling the other
end of both loops (near the bight). This will form a new crossing turn in the bight around the standing parts.
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