How to get a screenshot with Gnome in Debian Wheezy

http://blog.giuseppeurso.net/wp-content/uploads/2013/06/gnome-screenshot-screenshot.png
Screenshot in gnome is very easy, as there is a program called: Screenshot
This program should come with the default Gnome 3 installation with the Debian Wheezy installer. You can find it in the Debian Classic application menu as well as in the Gnome application menu (the cool one).
Here it...
How to get a screenshot with Gnome in Debian Wheezy