Page 531 - Bob Holtzman "The Field Guide to Knots How to Identify, Tie, and Untie Over 80 Essential Knots for Outdoor Pursuits"

71. Method 2: In a Sling

This is a convenient method to add a loop to a fixed object for hanging gear. It’s
quite similar to the previous method.

1. Form a bight in the sling and pass it through or around the object.

527