The grid of propositional attitudes: attitude type across the top — cognitive, conative, affective — and processing level down the side. The named concepts of mental life (belief, doubt, desire, hope, fear, and the rest) are cells; most of the grid is unnamed territory. This is the layer of structure the framework says an aperture is made of.
The grid is a working diagram, not a finished claim. How this taxonomy connects upward to the framework’s account of value is the project’s open frontier — see the argument.