Some useful mac shortcuts
command option eject: This puts your mac fast to sleep
control shift eject: turns off your screen
command shift 4: I use this to measure pixels, but it‘s intended to make screenshots
command option d: show and hide the dock
Control Eject: Restart, Sleep, Shutdown dialog box
Control command D: Looks up a word in the dictionary. simon showed me this one. A reasonably unknown shortcut in my opinion. You can use this shortcut in any Cocoa application (Mac native) like safari and a small tooltip will appear above the word your mouse pointer is hovering. You don‘t need to have the dictionary open so you can easily use this at all times.
