+ Drul_array<Grob *> stems (Note_column::get_stem (columns[0]),
+ Note_column::get_stem (columns.back ()));
+
+
+
+
+ Real ss = 0.5 * Staff_symbol_referencer::staff_space (me);
+ Real lp = ss * robust_scm2double (stems[LEFT]->get_property ("stem-end-position"), 0.0);
+ Real rp = ss * robust_scm2double (stems[RIGHT]->get_property ("stem-end-position"), 0.0);
+
+