{                                  'segment 1: cube 1
0FTR,1FT,2F,3F,-1,      'face 1 to the front with vertices 0 and 1 to the top, vertex 0 to the right
4,5,6,7,-1,
0,1,5,4,-1,
1,2,6,5,-1,
2,3,7,6,-1,
3,0,4,7,-1,
}                                 ' end of segment 1
{                                 'segment 2: cube 2
0FTR,1FT,2F,3F,-1,     'same orientation as cube 1
4,5,6,7,-1,
0,1,5,4,-1,
1,2,6,5,-1,
2,3,7,6,-1,
3,0,4,7,-1,
}                                ' end of segment 2
[                                'realm links from here
1,1,2,2,-2,                  'definition link:  vertices 1 and 2 are in segment 1, vertices 3 and 4 are in segment 2.

0,1,1,0,-1,               'inter-realm face:   a "square" with vertex 0 in segment 1, vertex 1 in segment 1, 
                                                                              'vertex 1 in segment 2 and vertex 0 in segment 2
1,2,2,1,-1,
2,3,3,2,-1,
3,0,0,3,-1,
4,5,5,4,-1,
5,6,6,5,-1,
6,7,7,6,-1,
7,4,4,7,-1,
0,4,4,0,-1,
1,5,5,1,-1,
2,6,6,2,-1,
3,7,7,3,-1,
]                                'end of realm links
