Page 129 - Peter Randall "The Craft of the Knot.."

Thanks to the properties of the Crossing Knot (a knot made by one
rope around another at the point where it crosses it, then continuing
past it), you should have no problem lifting up the bundle by pulling on
the knotted rope.

SLIPPED AND DOUBLE SLIPPED REEF KNOTS

Here are two other variations on tying a Reef Knot.

STEP 1 To make a Slipped Reef Knot, start by tying the Reef Knot (see
Chapter 6), but tuck one of the ends with a bight.

STEP 2 To make a Double Slipped Reef Knot, tie the second Half Knot
with bights at both ends.