public virtual void SaveToFile(BinaryWriter stream)
{
//Program.WriteLine(" * Saving {0} {1}...", this.GetType(), ID ?? "????");
Toolkit.SaveExpectation(stream, "ENTT");
stream.Write(ID ?? "<Null>");
stream.Write((char)Glyph);
BackgroundColor.SaveToFile(stream);
ForegroundColor.SaveToFile(stream);
stream.Write((byte)XPosition);
stream.Write((byte)YPosition);
stream.Write((byte)0); //was Flow
stream.Write(Blocking);
}