func writeLob(wr *bufio.Writer) {
	wr.WriteB(0)
	wr.WriteInt32(0)
	wr.WriteInt32(0)
}
func writeLob(wr *bufio.Writer) {
	wr.WriteB(0)
	wr.WriteInt32(0)
	wr.WriteInt32(0)
}
// TODO: first write: add content? - actually no data transferred