title: how to repeat last command in OCaml interpreter shell
body: <p>I've been trying out OCaml. Sometimes its quicker just to test out some code using the interpreter shell but, it doesn't bring up the last command when I press the 'up' key.</p>
  
  <p>Its a pain when I miss type something or wish to see what a little variation would produce.</p>
  
  <p>Anyone know if there is another key for it?</p>
  
  <p>Thanks,</p>