SCM proportional = get_property ("proportionalNotationDuration");
if (unsmob_moment (proportional))
{
musical_column->set_property ("shortest-playing-duration", proportional);
musical_column->set_property ("shortest-starter-duration", proportional);
SCM proportional = get_property ("proportionalNotationDuration");
if (unsmob_moment (proportional))
{
musical_column->set_property ("shortest-playing-duration", proportional);
musical_column->set_property ("shortest-starter-duration", proportional);