How do Ruby characters work?

Question

I read that Ruby has a language called "label", how does it work?

Update:

I saw it at http://ruby.about.com/od/gems/qt/shorturl.htm , where the author talks about the shortcut at the bottom of the article:

puts ShortURL.shorten('http://ruby.about.com', :lns)

Answer 1

Think the author wanted to say characters . You can read about them here , and docs

Answer 2

I just consulted my Pickaxe book and there is no such function. Could this go by a different name?

Answer 3

Rails , HTML.