+ (int)calc_interstaff_dist (stem (i), this);
stem (i)->set_direction (y < knee_y ? UP : DOWN);
stem (i)->set_elt_property ("dir-forced", SCM_BOOL_T);
+ (int)calc_interstaff_dist (stem (i), this);
stem (i)->set_direction (y < knee_y ? UP : DOWN);
stem (i)->set_elt_property ("dir-forced", SCM_BOOL_T);