- SCM c0 (get_property ("middleCPosition"));
- SCM oc0 (get_property ("originalCentralCPosition"));
- if (scm_less_p (oc0, c0) == SCM_BOOL_T)
- span_->set_property ("direction", scm_int2num (DOWN));
+ SCM offset (get_property ("middleCOffset"));
+ if (robust_scm2double (offset, 0) > 0)
+ span_->set_property ("direction", scm_from_int (DOWN));