def zoom_out_frag(self, curr_frag):
        """
        :param curr_frag:
        """
        level = curr_frag[1]
        frag = curr_frag[0]
        output = []
        if level > 0:
            str_level = str(level)
            high_frag = self.spec_level[str_level]["fragments_dict"][frag][
                "super_index"
            ]
            new_level = level + 1
            output = (high_frag, new_level)
        else:
            output = curr_frag
        return output
:param curr_frag: