channel:show r,g, or b curve for editing in the dspy widget
ych 3x3:choose which of the 3x3 combinations of luminance (Y) vs chroma (C) vs hue (h) to edit. these are all active at the same time.
mode:choose to which channel to apply curves to
ddr0:the slope of the curve before the leftmost control vertex
ddg0:the slope of the curve before the leftmost control vertex
ddb0:the slope of the curve before the leftmost control vertex
ddrn:the slope of the curve after the rightmost control vertex
ddgn:the slope of the curve after the rightmost control vertex
ddbn:the slope of the curve after the rightmost control vertex
edit:edit luminance as linear values or in some gamma corrected space that gives more control over blacks. this only affects the ui and only rgb curves and luminance
radius:size of the guided filter chroma/hue blur to avoid colour noise
edges:edge parameter of the guided filter chroma/hue blur to avoid colour noise
