Real thickness = Staff_symbol_referencer::line_thickness (me);
thickness *= robust_scm2double (me->get_property ("thickness"), 1.0);
if (Staff_symbol_referencer::get_staff_symbol (me))
Real thickness = Staff_symbol_referencer::line_thickness (me);
thickness *= robust_scm2double (me->get_property ("thickness"), 1.0);
if (Staff_symbol_referencer::get_staff_symbol (me))