Structural equation models (see more details at https://en.wikipedia.org/wiki/Structural_equation_modeling) is becoming a statistical procedure required by most ecological journals when dealing with a complex network of interacting variables having a potential influence on a focus variable (e.g. species diversity, plant cover, soil fertility).Unfortunately researchers must relie to other statistical frameworks than XLSTAT to make use of this powerful method. Why not to include it in XLSTAT-Ecology?