info_table->attach (track_label, 0, 1, 0, 1, FILL, FILL);
info_table->attach (track_name_label, 1, 2, 0, 1, FILL, FILL);
info_table->attach (clock_label, 0, 1, 1, 2, FILL, FILL);
info_table->attach (track_label, 0, 1, 0, 1, FILL, FILL);
info_table->attach (track_name_label, 1, 2, 0, 1, FILL, FILL);
info_table->attach (clock_label, 0, 1, 1, 2, FILL, FILL);