https://soooprmx.com/20110416-osx-%ec%88%a8%ea%b2%a8%ec%a7%84-%ec%b0%bd%ec%9d%84-dock%ec%97%90%ec%84%9c-%ed%9d%90%eb%a6%ac%ea%b2%8c-%ed%91%9c%ec%8b%9c%ed%95%98%ea%b8%b0/
20110416 :: [OSX] 숨겨진 창을 dock에서 흐리게 표시하기