Page 201 - Buck Tilton - Outward Bound Ropes, Knots, and Hitches 2 ed.

Take the working end around the object a second

time and across itself a second time, maintaining
the diagonal direction as shown in the
photograph.

This knot works extremely well for attaching cords to the
handles of tools, or anything else of similar design, to allow

them to be hung. It can be used to attach a pencil to a
clipboard.
The final tuck in tying the double constrictor can be made

as a quick-release draw loop if you want to untie the knot
later. For the very best results, use a hard rope or cord when

tying the knot to soft material, such as a soft line, and use a
soft rope or cord when tying the knot to hard material, such

a metal ring.