private final static BitField colRelative = BitFieldFactory.getInstance(0x4000);
private final static BitField columnMask = BitFieldFactory.getInstance(0x3FFF);
protected AreaPtgBase(String arearef) {
AreaReference ar = new AreaReference(arearef);
CellReference firstCell = ar.getFirstCell();
CellReference lastCell = ar.getLastCell();
setFirstRow(firstCell.getRow());
setFirstColumn(firstCell.getCol());
setLastRow(lastCell.getRow());
setLastColumn(lastCell.getCol());
setFirstColRelative(!firstCell.isColAbsolute());
setLastColRelative(!lastCell.isColAbsolute());
setFirstRowRelative(!firstCell.isRowAbsolute());
setLastRowRelative(!lastCell.isRowAbsolute());
}