private void WriteSpreadsFile()
{
throw new NotImplementedException();
string spreads_pathname = Folders.system_path(m_spreadsFile);
m_spreadGrid.WriteCsvFile(spreads_pathname);
}
private void WriteSymbolsFile()
{
throw new NotImplementedException();
string symbols_pathname = Folders.system_path(m_symbolsFile);
m_level1Grid.WriteCsvFile(symbols_pathname, 1); // write first column only to file
}