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The ALT+F4 shortcut is commonly used in many operating systems, particularly Windows, to close the currently active window or application. When this shortcut is pressed, it sends a command to terminate the application, thereby closing it entirely. This is useful for quickly exiting programs without needing to navigate through menus, making it a time-efficient command for users.
In contrast, the other options pertain to different functions. Opening a new tab typically involves shortcuts such as CTRL+T in web browsers. Refreshing a page is usually done with the F5 key or CTRL+R, while minimizing an application is typically achieved using the WINDOWS logo key + M or ALT+SPACE followed by N. These functions serve different purposes, highlighting the specific utility of the ALT+F4 shortcut for closing applications.