We find the uniformizing equation, governing the developing map, of a complex hyperbolic structure on the (4-dimensional) moduli space of marked cubic surfaces. Our equation is invariant under the action of the Weyl group of type $E_6$.
"The uniformizing differential equation of the complex hyperbolic structure on the moduli space of marked cubic surfaces." Proc. Japan Acad. Ser. A Math. Sci. 75 (7) 129 - 133, Sept. 1999. https://doi.org/10.3792/pjaa.75.129