Page 56 - Berndt Sundsten "My First Book of Knots: A Beginner's Picture Guide"

How to protect the rope end

There are a few different ways to prevent lines from unraveling. The easiest
way is to make an overhand knot or a figure-eight knot; (see page 6).
However, whipping the rope looks nicer.

Common whipping

1. Place a thin yarn or line alongside the rope so that the string makes a loop.