[Wtr-general] how to include external script (.rb) in Watir?

[Alien Ruby]

Hi... 

Do you know if there is any document for me to read about function declaration, function returning values (integer, strings), and etc.

let's say I want to multiply something by 10,

x = Multiply(3)
puts x     # this line should give me 30.

How do I use something like,

def integer Multiply(y)
{ temp = 10 * y
  return temp
}

or

do a public class ?

Again, I appreciate your time.