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This is probably a joke, but to less knowledgeable PC users, the combination of Alt + the F4 key is a shortcut to close the application. (Macs don't have a series of F-keys, or Function keys, and it does not apply there).

Usually can be seen on various internet forums as a response to pretty much any question, as the person will unintentionally close whatever they were working on.

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14y ago

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