I made the following images of the higher Bruhat order B(5,2) (in the sense of Manin/Schechtman) with vZome:
Unfortunately, in vZome its not possible do have regular octagons, so I would like to build it with Stella. As far as I understood, you can't build polyhedra from scratch in Stella, but you have to form them out of basic compounds. Is that correct? If so, then what would be the basic compounds in my case? Sorry for the naive question, I really have no intuition for polyhedra at all.