I would like to point out that the shadows/highlights tool works somewhat differently than the black slider and tone curves from exposure. The Shadows/ Highlights tool is designed to lift the shadows and pull the highlights in a specific way, by preserving the details yet reducing global contrast, by detecting edges and brightning/darkening whole tonal regions as a group. This differs to the other tools suggested, in that the exposure module blacks and tone curves do not make distinctions between global and local contrast, darkening, brightening on a context agnostic per pixel basis.
In simpler terms, the blacks and curves acts on individual pixels, and the shadows/ highlights tool operates based on how bright an area of a photo is overall (is it bright area, or is it deep in the shadows, or is it neither?) Hence the name shadows/ highlights.