 (6 by default) if
   <i> print_errors</i>
   is TRUE (default is TRUE; see Section <a href="node9.html#opt"> 4.4</a>).
   The error message contains more detail about the cause of the
   error than can be obtained from just the status code, so you should set <i>
   print_errors</i> to TRUE if you have trouble determining the cause of the
   error.
</p>

<p>
   All errors are non-fatal. If <i> abort_errors</i>
   is FALSE (default is FALSE, see Section <a href="node9.html#opt"> 4.4</a>)
   the requested ope