{
  
  // Verbosity level (0=quiet, 1=event level, 2=track level, 3=debug)
  Int_t iVerbose = 1;

  // Input file (MC events)
  TString inFile = "ex2.root";

  // Number of events to process
  Int_t nEvents = 1000;

  // Parameter file
  TString parFile = "ex2params.root";

  // Output file
  TString outFile = "ex2d.root";

  // In general, the following parts need not be touched
  // ========================================================================

  // ----  Load libraries   -------------------------------------------------
  gROOT->LoadMacro("$VMCWORKDIR/gconfig/basiclibs.C");
  basiclibs();
  gSystem->Load("libGeoBase");
  gSystem->Load("libParBase");
  gSystem->Load("libBase");
  gSystem->Load("libPndData");
  gSystem->Load("libField");
  gSystem->Load("libPassive");
  gSystem->Load("libStt");
  gSystem->Load("libPlane");
  // ------------------------------------------------------------------------

  // -----   Timer   --------------------------------------------------------
  TStopwatch timer;
  timer.Start();
  // ------------------------------------------------------------------------

  // -----   Reconstruction run   -------------------------------------------
  FairRunAna *fRun = new FairRunAna();
  fRun->SetInputFile(inFile);
  fRun->SetOutputFile(outFile);
  fRun->LoadGeometry();
  // ------------------------------------------------------------------------

  // -----   STT analysis tasks   --------------------------------------------
  // digitize ....

  PndSttHitProducerIdeal* sttHitProducer = new PndSttHitProducerIdeal();
  //  CbmSttHitProducerReal* sttHitProducer = new CbmSttHitProducerReal();
  fRun->AddTask(sttHitProducer);
  // ------------------------------------------------------------------------

  // -----   Initialize and run   --------------------------------------------
  fRun->Init();
  fRun->Run(0, nEvents);
  // ------------------------------------------------------------------------

  // -----   Finish   -------------------------------------------------------
  timer.Stop();
  Double_t rtime = timer.RealTime();
  Double_t ctime = timer.CpuTime();
  cout << endl << endl;
  cout << "Macro finished succesfully." << endl;
  cout << "Output file is "    << outFile << endl;
  cout << "Parameter file is " << parFile << endl;
  cout << "Real time " << rtime << " s, CPU time " << ctime << " s" << endl;
  cout << endl;
  // ------------------------------------------------------------------------
}