Real t = Staff_symbol_referencer::line_thickness (me) * robust_scm2double (me->get_property ("thickness"), 1);
Grob *common = me->get_bound (LEFT)->common_refpoint (me->get_bound (RIGHT),
Real t = Staff_symbol_referencer::line_thickness (me) * robust_scm2double (me->get_property ("thickness"), 1);
Grob *common = me->get_bound (LEFT)->common_refpoint (me->get_bound (RIGHT),