private void WriteHeader(GrnBinaryWriter writer)
{
writer.Write(7380350958317416490);
writer.Write(8845441965100526989);
writer.Write(3613614802009591920);
writer.Write(2261131331893869605);
writer.Write(2261131331893869605);
writer.Write(7053895580311513156);
writer.Write(2138146631217928280);
writer.Write(4032492294667058554);
}