A bit confused with V7 - can’t find the - (minus) control point tool anymore - I found this to be a very easy way to limit the effect of the current filter (stopping Pro Contrast from blowing out highlights for e.g.)
Another functionality provided by the local adjustment tools is the so-called “neutral” control point, control line, control polygon or luminosity mask. It acts as a protection.
Indeed, if you apply a local adjustment to selectively correct an image element and that, despite your efforts, the correction affects another element or other image portion that you do not wish to alter, putting a neutral local adjustment tool on this element will prevent the corrections of the other tool being applied.
Gday folks, thanks for all the advice and links … turns out it’s a nomenclature thing more than anything else “Neutral” points are literally points that a removed (“Negative” points) from the current mask, now that I’ve done the option + click with them a few hundred times I appear to have my ‘head’ around it all.