Light, in stops: the range spans four of them
The bright end of the range, pulled down or pushed up on its own
The dark end, lifted or deepened without touching the bright end
Local contrast around edges
Blue to amber, the warmth of the white balance
Green to magenta, the other white balance axis
Darkening towards the corners, or lightening below zero
All values range from -100 to 100, 0 meaning unchanged