"Print Screen" is an option many of us do not typically use on our computers. The function of Print Screen is that it copies an image of whatever is on the screen at that time. If you have an important image or document open and want another way of saving it, using Print Screen can do that for you. Also, some people use it for pranks, as Print Screen can create a perfect facade that looks like your desktop.
Determine what you want to be on the screen. Some instances are a certain web page, word document or picture.
Press and hold down "Alt." Press the "Print Screen" button. It may be labeled "Print Screen," "Prnt Scrn" or "PRTSC" The image of the screen is now saved.
Open MS Paint. Go to "Edit" and select "Paste." The image of what you captured with Print Screen will now appear on MS Paint.