F12 - The last key on the top row of your keyboard. It's the one y

The last key on the top row of your keyboard. It's the one you press when you're too lazy to click save.

I hit F12 and it saved my essay. I didn’t even know I was doing it.

F12 because I was too tired to find the save button.

I used F12 to save my homework right before class started.