Dear developers...please create a method where one can control the opacity of the tool on the fly. The same way that one can change the size by holding the shift-key and dragging right or left. I know one can go into the settings panel and change some of the tools but even there the slider names are not that clear. At least have one actually named "opacity.

This is really limiting for me.

I love the capabilities of this software but I seldom use it because of this one drawback.

Thanks for considering.