public void Open(System.IO.Stream s, int version) {
long pos = s.Position;
ushort len = s.ReadUShort();
ushort flen = s.ReadUShort();
byte[] fn = new byte[flen];
s.Read(fn, 0, flen);
Filename = System.Text.Encoding.Unicode.GetString(fn);
Flags = (FileFlags)s.ReadInt();
if (version < 0x10001)
Offset = s.ReadInt();
else
Offset = s.ReadLong();
Length = s.ReadInt();
s.Position = pos + len;
}