a) Magnetic field magnitude distribution and b) distribution of angles δ between the field vectors and current for a toroidal flux rope with aspect ratio R₀/r₀ = 5, uniform-twist field, and unit-less twist br₀ = 1.5. Lines are cross sections of magnetic field surfaces on which magnetic field lines lie. The thick line (circle) is the flux rope boundary. The magnetic field magnitude B is scaled by its maximum value B_max inside the flux rope. The angle δ is zero for an exact force-free solution.