Set recombination rate to R and locus length to L." << std::endl;
out << " -sr Change the recombination rate R at sequence position p." << std::endl;
out << " -l Set the approximation window length to l." << std::endl;
out << std::endl << "Population Structure:" << std::endl;
out << " -I ... [] Use an island model with npop populations," < ... [] Sample s1 to sn indiviuals from their" << std::endl
<< " corresponding populations at time t." << std::endl;
out << " -M Assume a symmetric migration rate of M/(npop-1)." << std::endl;
out << " -eM Change the symmetric migration rate to M/(npop-1) at time t."
<< std::endl;
out << " -m Set the migration rate from population j to population i to M"
<< std::endl;
out << " -em