Another way to modify saturation. Clear explanations about chroma and saturation can be found at https://ninedegreesbelow.com/photography/changing-saturation-using-lch-chroma.html
« Presets » are a common feature for several Colors command. You can find its description in Section 8.1, « Entrées du menu « Couleurs » ».
This option gives more or less saturation.
These are common features described in Section 8.1, « Entrées du menu « Couleurs » ».