title: How does one use the store parameter of function fields?
body: <p>I've tried reading <a href="http://openerp-server.readthedocs.org/en/latest/03_module_dev_02.html#store-parameter" rel="nofollow">the docs</a>, but it's a bit confusing.</p>
  
  <p>Also, does <code>store</code> work with any other field types?</p>