[[ (d,toroid) ||| 0 0 1 1 2 4 6 | | 6 4 2 1 1 0 0 ||| (diorot,d) ]]
Dual toroid + spinor double cover. First half-turn locks destination (d,toroid) on sequence 0 0 1 1 2 4 6. Second half-turn returns on the conjugate sheet (diorot,d) with 6 4 2 1 1 0 0. 360° is the other side; 720° is home.
Outbound chevrons
Homebound chevrons
mesh: local-only
unlocked
angle: 0°