what if I start to run xfkill but then decide not to use it?
by newbiesforever from LinuxQuestions.org on (#5RWG6)
An application had effectively frozen temporarily, and slowed the entire system to being almost frozen itself; and I got tired of waiting, so I ran xfkill with a keyboard shortcut, to forcibly shut the application down. The application un-froze before I finished clicking on it with the X. I don't know how to cancel xfkill without using it, so I had no choice but to click on something with the X just to get rid of it. What would have just ended xfkill?
