def _draw_chars(self, data, to_draw):
        """
        Draw the specified charachters using the specified format.
        """
        i = 0
        while not self._cursor.atBlockEnd() and i < len(to_draw) and len(to_draw) > 1:
            self._cursor.deleteChar()
            i += 1
        self._cursor.insertText(to_draw, data.fmt)