void test()
{

 const Int_t m=2;
  Float_t x[m],y[m];

  x[0]=0.0;
  x[1]=20.0;
  y[0]=0.9;
  y[1]=1.1;
  TGraph *g = new TGraph(m,x,y);
  g->SetTitle("Efficiency vs.Threshold for CEM(1,x) CJT(2,7 or 10)");

  x[0]=0.0;
  x[1]=10.0;
  y[0]=0.95;
  y[1]=1.0;
  TGraph *gr1 = new TGraph(m,x,y);

  g->Draw("AP");
  gr1->Draw("P");


  leg = new TLegend(0.6,0.6,0.9,0.9);

  leg->AddEntry(g,"CJT(2,7)","l");
  leg->AddEntry(gr1,"CJT(2,7)","l");
  leg->SetHeader("Thresholds");

  leg->Draw();

}//end talk()