Photoshop Secret Shortcuts

It is proven that by using software shortcuts can boost up productivity. Here are 30 secret Photoshop shortcuts that I’ve learned from years of experience. Well, what I mean by "secret" is that these shortcuts are not documented in the menus. Keep reading and you will find how these shortcuts can speed up your productivity. I bet you don’t know all of them.
Link:
http://www.webdesignerwall.com/tutorials/photoshop-secret-shortcuts