SoTextureCoordinateEnvironment(3) on Linux
The text ee9cfb0bf7db, as Debian 8 (Jessie) shipped it.
The SoTextureCoordinateEnvironment class generates texture coordinates by projecting onto a surrounding texture. The texture specifying the enviroment will be mapped around the scenegraph below this node using a sphere. The texture will be mapped onto the scenegraph taking camera position into account. This will lead to an object reflecting its enviroment.