http://bugs.winehq.org/show_bug.cgi?id=11553
--- Comment #6 from Erasmo Acosta erasmo@erasmix.net 2008-02-12 17:30:06 --- (In reply to comment #5)
Yes I forgot. Mostly you use them for Dodge & Burning, but they have loads of uses. Like when you do bracketing and have two exposures of the same scene, and you use a brush to reveal portions of one scene that are dark on the other one. I've also used them to clone out a piece of a street light.