return 0;
}
+int
+Tie::get_column_rank (Grob *me, Direction d)
+{
+ Spanner *span = dynamic_cast<Spanner*> (me);
+ Grob * h = head (me, d);
+ if (!h)
+ h = span->get_bound (d);
+
+ Grob *col = dynamic_cast<Item*> (h)->get_column ();
+ return Paper_column::get_rank (col);
+}
+
Real
Tie::get_position (Grob*me)
{