Hello world I'm talking about comments in Alice3.
I'm going to add a comment to my first program, the hello world program.
You'll notice that down here at the bottom of the code view window you see "comment."
I'm going to drag that up and put at the very first thing, and then we can just type something here.

 At the minimum you should have your name,
You can either add a new comment or you can press enter,
on this one, and it adds another line.

You should have the name of the program.
You may want other comments later in your code that say...
things like say goodbye or turnaround or morning or things like that.

The // is very common in programming languages.
The // is also used in Java and C++
Comments are very important,  the compiler ignores them but
They're a way for you to leave notes for yourself or for other programmers.