} else if (_grid_type== GridTypeTimecode) {
metric_get_timecode (grid_marks, _leftmost_sample, rightmost_sample, 12);
} else if (_grid_type == GridTypeCDFrame) {
} else if (_grid_type== GridTypeTimecode) {
metric_get_timecode (grid_marks, _leftmost_sample, rightmost_sample, 12);
} else if (_grid_type == GridTypeCDFrame) {