/// <summary>
///
/// </summary>
/// <param name="outstream"></param>
public override void Write(StreamWriter outstream)
{
for (IEnumerator it = GetEnumerator(); it.MoveNext();)
{
DirectedEdge de = (DirectedEdge)it.Current;
outstream.Write("out ");
de.Write(outstream);
outstream.WriteLine();
outstream.Write("in ");
de.Sym.Write(outstream);
outstream.WriteLine();
}
}
