In your Digital Toolbox column (Save Those JPEGS, March 2007) you describe a way to adjust certain areas of a photo. You say "paint the mask." Nowhere do you describe how to do that! I am brand new to Photoshop and am trying to demystify it. I think you pros all think we novices know as much as you do!
I tried just doing things hoping the mask would "paint itself" and I could figure out what I did. No luck. Please describe in detail how to get the mask painted so I can proceed.