Several of the toolbox tools -Smear, smudge, brightness, blend etc have Merge Mode settings. These are Add, Subtract, if lighter, Logical functions etc. None of them are grayed out so I assume that they have functions.
I can't get any of them to do anything "logical". If I get anything, it is usually a dark or light stripe.I can't find any mention of these in the online help. Any help from users?Thanks --Pat