[ubuntu] Default Key Combination for 'Window Resize Grippers' ???

view story

http://ubuntuforums.org – Hi In recently upgraded from Ubuntu 11.04 to 11.10 through update manager and still discovering it's features and things. I accidentally hit some key combinations and I was given this 'Window Resize Grippers' on an active application window. I haven't installed any software to tweak the Ubuntu environment. It's just a standard upgrade. I just dont know how 'Window Resize Grippers' popped up in the first place :confused:. Seems like a good option to me, so It would be helpful if any one can tell me how to bring about the 'Window Resize Grippers' whenever I want it . What is the default key (Hardware)