NS_NOTYETIMPLEMENTED("write me!"); return NS_ERROR_UNEXPECTED;
NS_NOTYETIMPLEMENTED("nsSVGTSpanElement::GetExtentOfChar"); return NS_ERROR_NOT_IMPLEMENTED;
NS_IMETHODIMP nsSVGTSpanElement::GetExtentOfChar(PRUint32 charnum, nsIDOMSVGRect **_retval){  NS_NOTYETIMPLEMENTED("write me!");  return NS_ERROR_UNEXPECTED;}