The color model (Lab or XYZ) used to display the color space is the same as the Profile Connection Space of the profile being edited. The cross-section is the horizontal plane (all colors have the same level of lightness) that contains the source color in the Lab or XYZ color space.

The Edited color indicator (filled square) moves to the location that you set. A line drawn from the neutral (center) axis to the Edited color indicator represents the new output hue. Profile Editor updates the colors close to the edited hue (depending on the Range value).