In tango, we walk in gaits, almost always trot-system and pace-system, occasionally amble-system. We place these gaits on geometry on the floor, using a maximum of four tracks. on which each dancer’s feet occupy two adjacent tracks. When using three or four tracks, the Mark can shift to either side of the Revel.
When walking on tracks, the arch must adjust constantly, but the dancers must be careful not to unintentionally create vertical shoulder flexion.
The Revel should be aware of her direction, and not turn a change of track into a pivot.
To move around on tracks, the Mark uses the same technology for redirecting the arch that he uses for change of foot and cross.