deselectAcc(all=False) 
# mimick selectAcc using clearSelection, deselectChild

selectAccText(por, n=None)
# addSelection if n is None or setSelection on n otherwise
# por param indicates selection should be added from self.item_offset+self.char_offset up to the por.item_offset+por.char_offset
# returns a boolean indicating if the selection was added (True) or ignored (False)
# should be added to default action adapter
# raise NotImplementedError if Text not supported

deselectAccText(n=None)
# deselect from all or n