Oh! Somehow I missed that paragraph :B
Transform formulae are in the third and last drop-down :) ... They aren't shapes in themselves, they only manipulate other formulae somehow. Actually, I'm not seeing Fern in this one! ;P It's all Menger... Unless that odd layering is the Fern doing something... =)
RE: "Squarespace" | dIFS Pong with @manelsage, #014