#ifndef __CINT__
main()
#endif 
{
  TFile* file = new TFile("bar.root","READ");
  if (!file) {
    cerr << "Bad" << endl;
    return; 
  }
  
  TNtuple* n = (TNtuple*)file->Get("n");
  if (!n) {
    cerr << "Bad" << endl;
    return; 
  }
  
  TCanvas* c = new TCanvas("c","c",600,600);
  c->Draw();
  c->Divide(2,2);
  c->cd(1);
  n->Draw("x1");
  c->cd(2);
  n->Draw("x15");
  c->cd(3);
  n->Draw("x3:x4","","BOX");
  c->cd(4);
  n->Draw("x3:x4","x1>3","SURF");
  c->Modified();
  c->Update();

  file->Close();
}