I am a relatively new RawTherapee user with a Widows 10 desktop. When using curves in various applications, I would like to be able to select a point in the image preview to know where that falls on the curve. I follow the tip to press Ctrl and left-click on the image but no new point then appears on the curve. This happens In all the applications with curves that I have tried.
I have searched RawPedia but have found nothing helpful and a search on here has not yielded an answer either. I assume that there must be a setting of some sort either have or have not set but I have not come across it. Help will be appreciated.