Concept: This texture alters the fog length of an object at its edges and makes fog objects with curved edges look insubstantial

Key Points: The texture must be used on a fog object with an initial fog length setting (.1 works well but, of course, the best value depends upon what you are trying to accomplish).  Color can be added to the object with attributes, brushes, or textures and can be use to do light beams, gas flames, etc.