I mean if your trying to delete like important files I dont think they should be deleted but that is My opinion. But if you do delete them then u could always got to the recycle bin in ur computer to get it back. I hope this helps !!
Look up "List of HTTP status codes" in Wikipedia. It's important to know the error and this list show what possibilities exist.
Answer:
https://www.digitalunite.com/technology-guides/computer-basics/using-computer/how-use-computer-keyboard
Explanation:
the link at the top should explain it all! :)