ion processing done.
    </p>
    <p>The <tt class="icode">$raw</tt> return value is the raw filename
    value as specified in the message header, which may include
    pathname components.  This return value is mainly for informative
    reasons and it should not be used by filter code for security reasons.
    </p>
    <p>The changes are backward compatible, but if you have written
    custom filters, you may want to use the new calling convention
    if you display the filename in the HTML generated.
  