title: How to stop emacs from replacing underbar with <- in ess-mode
body: <p><code>ess-mode</code> is "Emacs speaks statistics." This mode is useful for editing programs for R or Splus (two separate statistics packages).</p>
  
  <p>In my buffer, when ever I type <code>_</code> the character is replaced with <code>&lt;-</code>, which is very frustrating.  Is there an emacs lisp statement to turn off this behavior?</p>
  
  <p>emacs: 22.1.1
  ess-mode release (unknown)</p>