I found that handy little trick on macosxhints.com. Most public use Exposé quite frequently, I know I do. I have one of my hot corners set to “show desktop” which I like to do whether I want to invent certain something has downloaded correctly. However, all of my windows get shoved off the screen and there’s that annoying black border. So

when I found that terminal command, I was delighted.

Open terminal and type in:
defaults write com.apple.dock wvous-olddesktop -bool false

Then, restart the dock by typingkillall DockThis way, when you “show desktop” (default F11) all of your windows combine into a little window on your desktop.

Orginal post by conorjs1224