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 Sezione 8.1, «Introduzione al menu «Colori»».
This option gives more or less saturation.
These are common features described in Sezione 8.1, «Introduzione al menu «Colori»».