void DataSet_Coords_TRJ::Info() const {
  if (trajinList_.size() == 1)
    mprintf(" (1 trajectory)");
  else
    mprintf(" (%zu trajectories)", trajinList_.size());
  CommonInfo();
}
void DataSet_Coords_CRD::Info() const {
  mprintf(" (%s)",
          ByteString(sizeInBytes(coords_.size(), top_.Natom(), numBoxCrd_), BYTE_DECIMAL).c_str());
  CommonInfo();
}