Do not confuse the Windows Clipboard with the Windows Clipboard Viewer which comes with Windows. The Clipboard may be thought of as a storage room of sorts - a storage room to which text (as well as graphics) can be stored by one window, and retrieved by another. It is a limited storage room - before one window can store information, the storage room must first be emptied by the window seeking to use its facilities. It operates on the Last In - First Out theory. So every time one window stores information to the Clipboard, the prior contents end up in Clipboard Heaven, never to be seen again.