I can still remember being extremely confused the first time I came across a 'hello world' tutorial as a child. The thoughts running through my head were somet

I can still remember being extremely confused the first time I came across a 'hello world' tutorial as a child. The thoughts running through my head were something like: What is 'hello world' and why am I writing it? Is it a command that does something? Does every language have a 'hello world' command, or just this one? Let's see... if I copy and paste the code and run it, it doesn't seem to do anything except repeat 'hello world' back to me. I must be missing something...