Please arrange for Adobe to implement the following feature for me.
I love the "Visualize Spots" checkbox in the LightRoom / Camera Raw "Healing Brush" as a way to locate dust spots that need to be cleaned away.
The problem is, you need to be zoomed in at 100% to effectively deal with sensor dust, and sometimes it's not clear whether a particular mark on the screen is a fault or a feature. Then you need to click to normal view, and back to the edge-detection view. It's a problem having to move the cursor down to the checkbox, back to the spot to clean away, and back to the checkbox. A key-chord combination to enable and disable the edge-detected view would be a great benefit ... and there are so many to choose from! It could be Ctrl-H, since it's a Hide operation; or like overflow/underflow indication, it could simply use the control key. Only while healing, you understand.
That's all right, no royalties are necessary.
16 July .... Brilliant! John says to click the 'A' key when using the healing brush, to switch back and forth between the normal view and the edge-detection view. 'A' is for 'Admirable'!