stem_y.unite (Interval (y2,y1));
Real dy = Staff_symbol_referencer::staff_space (me)/2.0;
stem_y.unite (Interval (y2,y1));
Real dy = Staff_symbol_referencer::staff_space (me)/2.0;
Interval head_height = hed->extent (hed,Y_AXIS);
Real y_attach = Note_head::stem_attachment_coordinate ( hed, Y_AXIS);
Interval head_height = hed->extent (hed,Y_AXIS);
Real y_attach = Note_head::stem_attachment_coordinate ( hed, Y_AXIS);