Is there a short cut key to flip the desktop page upside down?

[IpsA]

One of my friend is a teacher who students have found some way to flip the desktop screen upside down. Now as they do it immediately we think they are doing it using some shortcut keys but which shortcut key? We actually know how to fix it when the screen is upside down but just wanted to know how they are doing it so quickly. Any tips?

[techman]

First of all this is not the section for screen display, it is Office related newsgroup. Secondly they are doing it with the help of Monitor settings. There is nothing related to any Office Product.

As per the shortcut key, yes might be doing it using shortcut such as “CTRL+ALT+Up arrow”