Examples of profiles generated in the presence of strong gradients along the line of sight, and the resulting disk-integrated profiles. Left: profiles made in the absence of velocity gradients. The projection onto the line of sight shifts the position of the local profile. A simple limb-darkening law proportional to cos µ makes the summed profile asymmetric. Center: Employed linear velocity gradient. Right: gradient along the line of sight following a square-root law. In all cases, the same limb-darkening law as in the left panel is applied. Dashed red lines represent individual lines of sight from the disk center, θ = 45°, and close to the limb. Solid blue lines show the disk-integrated profile. Vertical dashed lines mark the radial outward velocity of the plasma, υ₀ = υ_max = −40 km s⁻¹, in the observer’s frame, and the zero velocity υ_∗.