You rang sir? 
This one?
(it provides lots of info but it go’s deep in theory of colormanagment also and lots of what if’s and does it work like this? Side tracks but good to refresh memory.)
@Stenis @Fineus
There is in that thread a TiFf file which provide you a row of white to black columns so you can tsst on that file the action of each slider of selective tone.
It’s acticually a very good file fo test effects on.(see my fooling around video where i slides all kind of sliders to the max just to see what happens.
About fine contrast and the extra advanged ones.
Every kind of contrast creates a form of sharpening like the radius of unsharp masking. A forgotten technique.
https://www.cambridgeincolour.com/tutorials/image-sharpening.htm
And read about the function of the threshold. That’s the key in understanding the advanged contrast sliders in how the effect your image.
Micro contrast isn’t the same as blacklevel in other applications…( near 0 in the 0-255)
And blackslider arn’t blacklevel dots that range is much wider. (use that tiff to test that.)
The advanged contrast sliders are working great together with selective tone.
Agressive use of tonesliders causes artefacts and unwanted effects by combining the contrast slider with the same name you can fade non-existing details (like grey blobs in blown white area’s) or accentuate details from raised shadows)
Minus means fading details and plus means accentuating details.
Test for instance highlight slider tone and contrast both to plus, both to minus and one plus, other minus and viceversa.
Well i am summend by my wife to get buns of bread from the bakery.
And my project (new house) is asking for finising electra wirering finishing walls in the hallway so i am off to the real world. 