FYI: A new '*.jpg' image, providing a partly pictorial definition of the 'Dialectic of Human-Social Formation(s)', has today been posted to the www.dialectics.org Glossary Page.
The entry-title for this partially-pictorial definition is --
'E.D. Definition by Dialectogram: Dialectic of Human-Social Formation(s), First Triad'.
I have also posted this image below, for your convenience.