World / C-Plane coordinates not visible

I am trying to rotate environment map. I am not sure which are X Y Z on the scale and in the Render View, Since I use Rhino, I am used to that software’s coordinates. In the image below, Red = X, Green = Y and Blue = Z.

If I am correct, for Fluid Ray, Blue = X, Red = Y and Green = Z.

I thought these used to be marked in the Scale and Transform sections of the Attribute Editor ?