Where the map's light comes from, as a compass: the light the styling module's view.light.* knobs set, which the 3D buildings of the style and the plugins drawing their own lit surfaces share.
view.light.*
How high the light stands, in degrees above the horizon: 90 is straight overhead.
The compass direction the light comes from, in degrees clockwise from north, whatever the map's bearing.
Where the map's light comes from, as a compass: the light the styling module's
view.light.*knobs set, which the 3D buildings of the style and the plugins drawing their own lit surfaces share.