Universal Linking that joined all prime cubodal orientations in theory - with the cube orthogonalizing and square/triangle interfacing - requires additional features to make such a notion effective in practice.

By the association of geometry with physical vectors, in theory an alternative wheel orientation may be incorporated into the transport template by exploiting the template pattern and the cube link strategically, as in the example posed in the upper left turbine schematic, with travel and wheel axis vectors coinciding.

In practice, the actual cube link should be identifiable as such while also expressing the commonality between the 2 cubodal orientations linked to. In 3D application, the common cubodal feature, whatever orientations are involved, is the sphere.

Applied to links, spheres are centered on cube corners. By default, their radii are half the cube edge length, but they may have any radius deemed suitable - up to the cube's full edge length. More sophisticated linking expresses orientations linked to individually, with radii keyed in some way to ratios reflective of the patterns interfaced. Such ratios come in pairs, such as √2/2 and 1 - √2/2 along a unit length. One sphere ratio utilized may infer the other.

In practice, spheres are sectioned radially along planes interfaced, such that the cube link's face contacts the plane. Although cubes must remain cubes, they may be arrayed in any configuration required, provided they are individually discernible, especially if corner spheres are cylindrically joined. Such sectioned spheres and cylinders spread contact forces, as well presenting aesthetic and streamlining value.

A simple link for alternate orthogonal hexagon lattices consist of circular plates which may be cylindrically extended. With tubular construction, ball joints aptly serve as links signaling transition between cubodal orientations. To incorporate cubical lattices into the transport template, square links defined by crossing  rectangles keyed to hexagonal proportion are rounded by the (√3-1)/2 ratio characterizing that overlap.

GDCode presentation has reached maximum complexity here, and by it forthcoming applications should exhibit more viability, but first concepts related to setting are introduced in Part 5 - Ground Rules.