If you like to keep your Dock on the bottom of your screen like I do, then you have occasionally experienced the problem of it being in the way. You may just need to move it for a moment or two so you can reach something or move something or just read something.
It is a real bummer to have to go to the Apple Menu and move it to the left or right of your screen and then repeat the process to move it back to the bottom where you like to keep it.
Well, here is a quick and dirty way to move it temporarily. Hit Command-Option-D. The Dock will hide. To bring it back, hit Command-Option-D again.
Much less painful.