maxPolyhedra displays the List of generating polyhedra of the PolyhedralComplex, i.e. all Polyhedra that are not a face of one of the other Polyhedra. These are all of the same dimension if and only if the PolyhedralComplex is pure (see: isPure).
i1 : PC = skeleton(1,polyhedralComplex hypercube 2)
o1 = PC
o1 : PolyhedralComplex
i2 : L = maxPolyhedra PC
o2 = {({0}, {}), ({1}, {}), ({2}, {}), ({3}, {})}
o2 : List