A 1913 reprint of this Drew article does not mention the butterfly loop.

Alpine butterfly loop for a loop that is easier to remember and can be loaded in either direction.

Errors in tying the butterfly loop can produce a similar looking but inferior knot, the so-called "false butterfly", which is prone to slipping.

The butterfly loop is an excellent mid-line rigging knot, it is symmetrical and handles multi-directional loading well.

Wright and Magowan call the butterfly loop "new", along with several other of their knots, in the sense they were unable to identify any earlier record of them.

The double butterfly loop has two non-collapsing loops, allowing for two clip in points, both of which have the same advantages and disadvantages of a single-loop butterfly.

It is the analogous bend form of the butterfly loop, in that it is the butterfly loop with the loop cut.

The most reliable common variation uses a fixed loop, such as an alpine butterfly loop, artillery loop, figure-eight loop, or another of many suitable loop knots.

In the second part of the article they express dissatisfaction regarding their earlier use of the word "noose", since the knot is non-collapsing, and refer to the knot as butterfly loop or simply butterfly.

The observation that the butterfly loop is secure enough to isolate a worn or damaged section of rope within the loop indicated that the bend form of the knot would be similarly secure.

The butterfly loop, also known as lineman's loop, butterfly knot, alpine butterfly knot and lineman's rider, is a knot used to form a fixed loop in the middle of a rope.