Profiles of emission lines from an opaque rotationally supported accretion torus (top panel) and a geometrically thin optically thick accretion disk (bottom panel) viewed at different inclinations i. The torus dynamical parameters are n = 0.21 and r_k = 12  r_g. The inner boundary radius of the torus r_in = 8.486  r_g and the outer boundary radius r_out = 20.246  r_g. The disk has the same values for the inner boundary radius and the outer boundary radius as the torus. In both cases, the black-hole spin parameter a = 0.998. The line emissivity is proportional to r^-2, where r is the radial distance from the central black hole. The line profiles are normalised such that the flux F(E₀) = 1 at the view inclination angle i = 60°, where E₀ is the rest-frame line centre energy.