Are ALL fields in "job options" actually options linked to cups filters?

[Golddouble]

The nature of these settings is still a mystery to me (except gamma, saturation and brightness).

Are ALL these fields in "job options" actually options linked to cups filters? Can we say, this is the GUI for the options of the cups filters? Or are there also fields here that are not options linked to cups filters?

Thank you for an answer.