Page 471 - Bob Holtzman "The Field Guide to Knots How to Identify, Tie, and Untie Over 80 Essential Knots for Outdoor Pursuits"

4. Pull the marlinespike so that it draws a bight into the standing part that comes through the crossing turn
from back to front. Continue pulling until the crossing turn tightens against the marlinespike.

Untying: Remove the marlinespike. The knot becomes a Slipped Overhand

Knot that can be easily pulled straight.

Marline, Marling, Marlin

Marline (also marling and marlin) is thin, strong cord, usually tarred, used
for seizings and servings on sailing ships. The word has a confused

etymology but it clearly has nothing to do with the marlin fish. A
marlinespike is a tool to pull marline tight, and marlinespike seamanship

refers to this kind of work, in addition to splicing.

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