Schematic plot of the velocity along the line of sight relative to the star velocity, in a template Keplerian disk inclined by 30°. The plane of the figure is the plane of the sky and the dashed line is the projection of the disk rotation axis. The color scale indicating the velocity is in arbitrary units. We note that the high-velocity magenta/red and blue patterns are elongated perpendicular to the yellow/green patterns, which correspond to velocities close to zero.