If you take a look at your laptop's keyboard, you'll notice that the top row keys have icons printed above, with "F" and a number, like F1, F2, and so on, below each one. These are known as function ...

And secondly, the delay between those key-presses (in milliseconds) can't be too short because the program can "miss" the keystroke due to too fast typing or whatever is the reason why it fails. This ...