How to remove painted red marks/lines on the screen?

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                          There is some weird feature of either Compiz or KDE which allows to paint on the screen with the shortcut Win+Alt+left mouse clicks.
How do I undo, erase or remove these markings?
                        

Asked by kenorb (22004 rep)

Oct 7, 2014, 04:01 PM
Last activity: Oct 3, 2022, 06:50 PM

How to remove painted red marks/lines on the screen?

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