Thanks for the reply, john.
Something told me that was going to be the answer including the use of the most unintuitive word, 'bezel', as the name for that annoying piece of software interface.
God I'ld love to have a long sit down talk with the person or person's at Adobe that designed Lightroom's interface. If ever I want to get an idea of a person's personality and way of thinking so completely different from mine, I just start editing my images in Lightroom. They must be the same people who came up with those elaborately, modular closet organizers only the most obsessive compulsive neat freak could put to good use.
No wonder I keep going back to ACR.
But not to disparage Lightroom as an image editing tool overall, I still find new ways of improving the most problem images, pulling out more detail than I could in CS5's PV2010 even with LR's default sharpening. Even LR's point curve isn't as bad as I thought.
Please pardon my rant.