The first flow is about Sator Square.
(HTML)"* Sator Square, inscribed, Article; the article uses: "Rotas square"* John T. Cullen, "God Holds The Plough, But You Turn The Furrows: Conjecture on the Sator Rebus" (HTML)""*"Section of Page and Eloise's Memorial website related to the Sator Square, 1995 (HTML)"* Magic Square Museum: the first Second Life museum about Magic Square.