Visualization of field lines at t = 11 360 s with the photospheric B_z field and the overlying magnetic field seeded four different ways. The green field represents the overlying horizontal coronal field, the red and cyan fields are seeded by corks near regions with high current density and ȷ/B, and the orange field is seeded with a bias toward the photospheric −B_z field. The overlying horizontal field (green) is nearly anti-parallel to the red and cyan features.