+
+
+ADD_INTERFACE (Hara_kiri_group_spanner,"hara-kiri-group-interface",
+ " As Vertical_group_spanner, but keep track of interesting items. If
+we don't contain any interesting items after linebreaking, then
+gracefully commit suicide. Objective: don't disgrace Lily by
+typesetting empty lines in orchestral scores.",
+ "items-worth-living");
+