God replied to the joke: What does the computer’s ALT F4 mean?

Simple answer: It means to exit the application (or: exit the program).

Relevant knowledge:

1. The superficial meaning is that on the computer keyboard, press and hold the "ALT key", then press the "F4 key", and then release it. Turn on the pressed key.

2. The "ALT F4" key operation is habitually used to close applications in the win operating system, especially to forcefully close or exit the application. There are more than 80 programs under the win operating system that will forcefully terminate and exit if you press "ALT F4" while they are running.

3. However, it does not mean that "ALT F4" will definitely be able to force an exit. Whether it can be exited ultimately depends on whether the programmer has designed an instruction to respond to this button. In other words, in fact, this is just a customary habit of programmers. If the programmer forgets or does not want the program user to press "ALT F4" to exit the program, then "ALT F4" will have no effect.