There is also protection against selecting text as well so I don't know how DT did it (maybe Ctrl+A, Ctrl+C). Personally I think it's very misguided, people will always want to copy bits of text for personal use, plus you can get round the protection if you disable Javascript. Also some browsers ignore the selection thing and let you highlight text.
Also, in general I'd prefer it if people wrote answers in their own words. This one is fine though because it's hard to rewrite any of that into different words.