About the Local Adjustment and copy and invert mask possibility.
I found some early tryouts.
HSL is global color control and with LA you have a different control but more local.
And this one:Local adjustment – Control point
i use often a Virtual Copy to have some fun with the tools when a image suits the need.
just try every tool and combinations to the max of it’s adjustment posibility’s and see what it does. Totally screw up a image in all possible way’s and when done just use the usable outcome’s on the master and delete te VC.
You find new path’s and possibel solutions in that way which arn’t in tutorials or manuals.
The strength in PL’s masking tools lies in combining them working an area or global.