To architecturally accommodate mobile artifacts - and harmoniously incorporate other functionalities into expanded transporters - first requires commonality to be drawn from the cuboda's dual planes.

The essence of the cubodal wheel was largely associated with the triangle, while the code's architectural derivation was keyed to the square. To integrate these basic but geometrically discordant artifacts, first recalled is how squares and triangles shared common edges in the cuboda's original construction.

What's particularly cool about the cuboda is that its innate lines are common to internal triangles and (half-formed) squares as well. What those lines delineate is the simplest polyhedral form possessing both (external) triangles and (internal) squares - the octahedron.

The octahedron's squares may be externalized by encasing an isolated octahedron inside a sphere. Then, upon centering a light source inside the octahedron, the 60° angles between its edges become the 90° angular separations of their arced shadows.

By this angular transformation, the square may be regarded as an expanded triangle or, conversely, the triangle can be thought of as the stabilization of a collapsing square. Either way, the transformation is attended by circular arcs. Although circles were originally derived by spheres' hexagonal bisection, circles are just well formed by square plane bisections.

This commonality may work in conjunction with the circle applied architecturally by way of the cube projections' rotated squares. In co-planing these with the macrocosmic wheel's central hexagon (after primary rotation), circular windows express architectural accommodation of transporters 2-dimensionally.

Triangle/square reconciliation is also key to the necessary interfaces of 3D accommodation and incorporation schemes, starting with Shelter/Transport Fusion, topic 2 of Polytechnic Integration.