internal override byte[] ToBlob()
{
MemoryStream str = new MemoryStream();
str.WriteByte(GetTypeIndex());
if (elemType == null) str.WriteByte(0x50); // no info (MAX)
else str.WriteByte(elemType.GetTypeIndex());
MetaDataOut.CompressNum(parNum,str);
MetaDataOut.CompressNum(elemMult,str);
MetaDataOut.CompressNum(len,str);
return str.ToArray();
}