Real h = sl * gh_scm2double (sp->get_elt_property ("height"));
Molecule mol (Lookup::filledbox ( Box (Interval (0,w), Interval (0,h))));
mol.translate (Offset (leftext, 0));
Real h = sl * gh_scm2double (sp->get_elt_property ("height"));
Molecule mol (Lookup::filledbox ( Box (Interval (0,w), Interval (0,h))));
mol.translate (Offset (leftext, 0));