P: (Masking)Option/Alt key modifier in Mask edit sliders (Visualization)

Request for change

Add the capability to hold down the Option/Alt key when moving sliders in the mask editing panel, such as Whites, Blacks, Shadows.Highlights, etc , to see the selection masked, as is available in the Basic panel.

/update/ the word Visualization applies

(note, could not find existing Idea, I assume their is one)