Robert P. Munafo, 2012 Apr 16.
The opposite direction from counterclockwise.
Similarly, three children of R2.1/3a are labeled; in clockwise order they are: R2.1/3.2/3a, R2.1/3.1/2a, and R2.1/3.1/3a.
There is more on this topic in the counterclockwise article.
revisions: 19971120 oldest on record; 20120416 add illustration
From the Mandelbrot Set Glossary and Encyclopedia, by Robert Munafo, (c) 1987-2017. Mu-ency index
This page was written in the "embarrassingly readable" markup language RHTF, and was last updated on 2017 Feb 02. s.11