 In Ars demostrativa (1283), Llull introduces two important variations. The first is the inclusion of the  Elemental Figure,  which in the first version of the Ars was just a figure that supported  Figure T.  The function of this figure, as Bonner (2007) explained, is an analogical substitute of the table of oppositions to emphasize two aspects: the proper and appropriated qualities, and their concordant and contrary.