What HNer henry_flower neglected to state explicitly in his helpful comment is that it is false that pressing C-s to go to the next result is hardcoded in some Emacs Lisp function. I just wanted to say that in case non-Emacsers don't know it's implied by what Henry did say. (What he said is much better than just "that's not true!", he also tells you how to change the C-s key that goes to the next match.)