incomplete instructions on "Foreground select" tool
There are a couple of variables in Foreground Select tool that are not mentioned in https://docs.gimp.org/2.10/en/gimp-tool-foreground-select.html
Under "Levin" are "Levels" and "Active Levels" sliders. Please add instructions.
EG: if you have fine blond hair against well-keyed greenscreen, what should these be set to? Thanks