Where the tutorial says (of the HelloWorld.js script)
"When you attach this to a GameObject in Unity and hit Play it will print "Hello, world" once to the console."
The tutorial assumes that the reader knows how to attach the script to a GameObject. Instructions should be provided regarding how to do this so that a new user can see "Hello World" in the console.
Assuming it's okay I've added the appropriate instructions to the tutorial.
--Carllooper 14:52, 4 September 2009 (PDT)