public virtual void Save(System.IO.Stream stream)
{
byte [] name_bytes = System.Text.Encoding.ASCII.GetBytes (Name);
byte [] length_bytes = BitConverter.GetBytes ((uint)data.Length, false);
stream.Write (length_bytes, 0, length_bytes.Length);
Crc crc = new Crc (stream);
crc.Write (name_bytes);
crc.Write (data);
crc.WriteSum ();
}