Thanks Mike for your reply,
I understand now it is just a labelling issue to simplify a procedure.  BTW, in painting darker tones are indeed called shades and lighter tones are called tints.  I visualise a a tone graded colour cylinder in my head whilst painting that can be sliced across at any point to reveal a standard colour wheel.
So I go around it to choose the most saturated colour, across it towards its complement to grey it or desaturate it, and down the cylinder to darken it.
Although many graphic software applications use the colour wheel, I am surprised that I have never found one which uses such a cylinder.
This brings me, full circle, as it would help folks understand & simplify the procedure.
Apologies for straying slightly off topic and thanks Mike for developing and providing a *simple* printing solution for me in Studio, all these years.
Cheers, Keith (Ireland)

Hi Mike,
Regarding your new selection editing feature which involves selecting *tone* as one of the 4 ways it operates.

My Definition of Tone refers to the lightness or darkness of a color, rather than what the actual color is (e.g. cadmium red or Prussian blue).

I am not using Ultimate, at present, so cannot comment on your new feature other than that your explanation was at odds with my understanding.  I have no idea how this affects your excellent software programming but coming from a lowly artist background these are the questions I ask myself to skilfully define the exact nature of any colour:-

What colour is that? (Red, Orange, Yellow, Green, Blue, Purple or Grey)
What Hue? (If the colour is Yellow, is it towards the Orange or the green)
What is its Chroma? (Brilliantly Saturated or Chromatically weak, Greyed)
What Tone is it? (How light or dark in relation to other tones.  If on a scale to ten, White is Tone 1, Yellow might represent a Tone of 2)
Cheers,
Keith Thompson (Studio member)