void na49view()
{
   TCanvas *c1 = new TCanvas("c1", "The NA49 canvas", 200, 10, 700, 780);

   gBenchmark->Start("na49view");

   TPad *all = new TPad("all", "A Global view of NA49", 0.02, 0.02, 0.48, 0.82, 28);
   TPad *tof = new TPad("tof", "One Time Of Flight element", 0.52, 0.02, 0.98, 0.82, 28);
   all->Draw();
   tof->Draw();
   TPaveLabel *na49title = new TPaveLabel(0.04, 0.86, 0.96, 0.98, "Two views of the NA49 detector");
   na49title->SetFillColor(32);
   na49title->Draw();
   //
   TFile *nageom = new TFile("na49.root");
   if (!nageom || nageom->IsZombie())
      return;
   TGeometry *n49 = (TGeometry *)gROOT->FindObject("na49");
   n49->SetBomb(1.2);
   n49->cd(); // Set current geometry
   all->cd(); // Set current pad
   n49->Draw();
   c1->Update();
   tof->cd();
   TNode *TOFR1 = n49->GetNode("TOFR1");
   TOFR1->Draw();
   c1->Update();

   gBenchmark->Show("na49view");

   // To have a better and dynamic view of any of these pads,
   // you can click with the middle button of your mouse to select it.
   // Then select "View with x3d" in the VIEW menu of the Canvas.
   // Once in x3d, you are in wireframe mode by default.
   // You can switch to:
   //   - Hidden Line mode by typing E
   //   - Solid mode by typing R
   //   - Wireframe mode by typing W
   //   - Stereo mode by clicking S (and you need special glasses)
   //   - To leave x3d type Q
}