* (instead of relying on re-parsing the whole formula which converts these
* to the error constant #REF! )
*/
public void testRefErr() {
confirmRefErr(new RefErrorPtg());
confirmRefErr(new AreaErrPtg());
confirmRefErr(new DeletedRef3DPtg(0));
confirmRefErr(new DeletedArea3DPtg(0));
}