What does Alt+F4 do?

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in Computers & Internet by
Ive heard people say it (by omegle And places like it) What would It do to my computer?

Serious answers only please

4 Answers

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It closes the current active window.  It's an annoying little trick to play on someone in a chat because it makes their chat window close.  It does no harm, apart from you losing any unsaved chat history, etc.
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ALT and F4 closes the current application you are working in.
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ALT-F4 is the keyboard shortcut to Exit the application. for example, If you hit ALT-F4 while in internet explorer, it will close the window.
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Speeds it up when it's under heavy load, like when you have lots of tabs open or important work and it slows down.
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