Position-velocity diagrams of the Hα+[N II] λλ6548,6583 (left and central) and [O I] (right) emission lines in the NFM cube, along the W13 major (45°, left and right) and minor axes (135°, central). Rotation models overplotted follow the inset. The dotted green line is for an illustrative rotating model with M_• = 6.0 × 10⁹ M_⊙ (HBH), an inclination of 60°, and a constant blueshift of 650 km s⁻¹ from the systemic velocity.