What is the & in emacs key binding?

Question

For example, yasnippet provides the command yas-new-snippet, which is bound to C-c & C-n. I don't understand what this means. It does not mean to press Ctrl-C, then Ctrl-n (this should be C-c C-n). It also does not mean to press Ctrl-C, then n. What's the correct way to type it?

Answer 1

Just type C-c, &, and C-n.