Here's the actual answer:
http://www.youtube.com/watch?v=mzVFCJlnIM0
I'm very surprised and disappointed that you have to go to YouTube to get the answer. This should've been provided by Apple. The answer is NOT intuitive, because (as you'll see when you see the video) the search box ONLY has your choice of search engine in it. Future updates should say (e.g.) "Google or Search Page" instead of just (e.g.) "Google". -- I see "andythursby" (3rd post above) DID answer the question: I didn't quite follow his answer, maybe because I was looking for it to be "more spelled out". For those who, like me, have a slightly short attention span, I guarantee the YouTube will explain it for those who need/would like an a/v demo!