title: How to write a tilde (~) character in Emacs on Mac OS X?
body: <p>I'm used to write a ~ character by pressing Alt+N on Mac OS X. This does not work in Emacs. Alt+N key seems to be bind to the command history. So my question is how to write a ~ character in Emacs on Mac OS X?</p>
  
  <p>EDIT: I'm using Aquamacs.</p>